CN105589095A - Underground hydrogen detecting method and underground hydrogen detecting system for earthquake precursor detection - Google Patents
Underground hydrogen detecting method and underground hydrogen detecting system for earthquake precursor detection Download PDFInfo
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 115
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 115
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000002243 precursor Substances 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 105
- 239000007789 gas Substances 0.000 claims abstract description 88
- 230000006698 induction Effects 0.000 claims abstract description 41
- 238000012545 processing Methods 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000008859 change Effects 0.000 claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims description 106
- 230000005587 bubbling Effects 0.000 claims description 5
- 239000003673 groundwater Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 2
- 238000007667 floating Methods 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 9
- 230000003068 static effect Effects 0.000 abstract description 7
- 239000002349 well water Substances 0.000 description 12
- 235000020681 well water Nutrition 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 150000002431 hydrogen Chemical class 0.000 description 11
- 238000004458 analytical method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000002706 hydrostatic effect Effects 0.000 description 4
- 239000004429 Calibre Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000011437 continuous method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
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- 239000003345 natural gas Substances 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/01—Measuring or predicting earthquakes
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Abstract
The invention discloses an underground hydrogen detecting method and an underground hydrogen detecting system for earthquake precursor detection. The underground hydrogen detecting method comprises steps of water gas separation, induction detection, signal conversion and display processing. The underground hydrogen detecting system comprises a gas collecting device, an induction testing chamber, a data acquisition unit and a display processing unit. The underground hydrogen detecting method and the underground hydrogen detecting system can realize continuous and stable water gas separation on dynamic and static underground water, thereby effectively collecting the gas contained in the underground water. Then the hydrogen is detected through an induction film in an induction detection chamber. Then current which flows over the induction film is converted to a voltage signal which is proportional with the sensed hydrogen concentration, and furthermore voltage signal change is detected. The underground hydrogen detecting method and the underground hydrogen detecting system have advantages of high stability, high reliability, high detecting precision for the hydrogen in underground water, and high suitability for different underground water environments.
Description
Technical field
The present invention relates to a kind of hydrogen monitoring method and system, particularly relate to a kind of for earthquakeUnderground hydrogen monitoring method and the system of omen monitoring.
Background technology
China and surrounding area earthquake in recent years takes place frequently, and relates to that territorial scope is wide, harm is large. ForThis is the whole bag of tricks that before earthquake occurs, the anomaly of appearance is monitored for seismic precursorMeans become important content and the focus of seismic study. Wherein, underground fluid, as underground water (wellContained water in water, spring, subterranean layer), also may in oil and natural gas, subterranean strataStore some other gases. With chemical analysis and some physics of these underground fluids of instrument monitoringAmount, the situation of change of studying them can help people to predict earthquake. Wherein, earth interior gasIn body, have the hydrogen (H2) of direct relation with tectonic activity, be widely regarded as larger may be shortFace the survey item that obtains breakthrough in Earthquake Precursor Anomalies. Research shows, hydrogen that the earth's crust is overflowed, specialThat fracture belt overflows the mechanism that H2 in gas forms and is summarized as 3 types: the one, earth's crust lower floorPlastic rock can produce in fault movement process, as the crack of serpentinite or Silicate Rocks and breakingEasily there is the reaction of water rock and directly produce hydrogen in face; The 2nd, come from crust deep part blowhole, crackThe middle H2 being sealed up for safekeeping, along with the increase of the connected sum pore pressure in crack in fracture belt rock,Can cause H2 through crack Upward Migration, overflow earth's surface, make the H2 in underground water and SOIL GASConcentration raises; The 3rd, in Seismogenic Process, particularly imminent earthquake breaks the stage, and rock expansion producesRaw ultrasonic vibration, can discharge the H2 sealing up for safekeeping in blowhole, crack. H2 in fracture belt is denseDegree can reflect the active level of fracture belt. As can be seen here, these character of hydrogen self have determinedIt can be used as one of sensitive component of reflection seismic precursor index.
In the prior art, to below main existence in the method means of hydrogen monitoring in underground waterProblem:
The one, automatic monitor for continuously problem. Hydrogen in underground water is in the continuous dynamic change of oneIn process, relevant with many factors such as region, time, season, month, environment temperatures, andRealize monitoring of earthquake precursors, must carry out for a long time the hydrogen in underground water, connectAutomatic monitoring and the analysis of continuous property, for example variation monitoring situation, historical contemporaneity pair in short-termThan monitoring situation etc., the abnormal conditions that could occur hydrogen like this be made accurate analysis and sentenceDisconnected. In prior art, also having the artificial method that gathers hydrogen, is mainly the form with bubblingThe hydrogen being dissolved in underground water is separated out to the mensuration of carrying out hydrogen number. Along with earthquake monitoring and forecasting needsThe raising of asking, requires to carry out Continuous Observation, and the hydrogen monitoring technology of manual type obviously cannot expireFoot demand.
The 2nd, monitoring accuracy problem. After being separated, the gas dissolving in underground water collects to enter againRow concentration detects, and this process need separates gas fully as far as possible from underground water, and wholeIndividual process need is in continual and steady state, otherwise meeting is because aqueous vapor lock out operation is unstableAffect collection and the change in concentration of hydrogen.
The 3rd, applicability problem. According to the flow regime difference of underground water, can be divided into artesian wellWater, for example underground dynamic spring of constantly gushing out, the shape of this water,artesian-well in dynamic flowState; Also have hydrostatic level observation well water, the static well water that for example underground many places pool together, thisPlanting inspection well water remains static substantially. Like this, the underground water of different conditions is carried out to hydrogenThe method means that gas adopts while separation are wanted targetedly, to adapt to different application conditions.
For these reasons, be necessary to provide a kind of underground hydrogen prison for monitoring of earthquake precursorsSurvey method and system, can stablize lasting aqueous vapor to underground water and separate, automatically right continuouslyIsolated hydrogen content detects, and is applicable to multiple underground water applied environment.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of ground for monitoring of earthquake precursorsLower hydrogen monitoring method and system, solve in prior art hydrogen monitoring in underground water be difficult to doAutomatically monitor to steady and continuous, and monitoring accuracy is not high, adapt to that groundwater environment is limited etc. asksTopic.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind ofFor the underground hydrogen monitoring method of monitoring of earthquake precursors, comprise that aqueous vapor separates, continuously from undergroundIn water, separate contained gas in water outlet, by isolated gas collection continuous wave output, through overdryingAfter dry processing, be input to induction sensing chamber; Induction detects, in this induction sensing chamber, and this gasBody only has the sensed detection of hydrogen during by sense film, by the electric current letter of this sense film of flowing throughNumber, further obtain becoming with responded to density of hydrogen the voltage signal of corresponding ratio; Signal turnsChange, this voltage signal, after amplifier amplifies, then is carried out to analog-to-digital conversion, obtain reflecting hydrogenThe data signal of gas content; Graphics Processing, shows, transmits, stores this data signalAnd analyzing and processing, in order to the dynamic change situation of hydrogen content to be described.
Another enforcement in the present invention for the underground hydrogen monitoring method of monitoring of earthquake precursorsIn example, this separates continuously the method for contained gas in water outlet and is from underground water: this underground water connectsAfterflow is moving, through Vertical Free falling, splashes a large amount of water droplets after falling the platform that dabbles, and realizesWater is separated from the gas, and this water droplet collects rear discharge.
Another enforcement in the present invention for the underground hydrogen monitoring method of monitoring of earthquake precursorsIn example, this separates continuously the method for contained gas in water outlet and is from underground water: this level of ground waterIn ground well, in this underground water, blast continuously bubble, this bubble enters underground water and floats on backwardFloating, in subsidiary this underground water, contained gas overflows together simultaneously, realizes water separated from the gas.
Another enforcement in the present invention for the underground hydrogen monitoring system of monitoring of earthquake precursorsIn example, the collecting pipe outlet of this gas collecting apparatus and airtight connection of air inlet of induction sensing chamber,Gas after aqueous vapor separates enters after this induction sensing chamber, only has contained during through sense filmThe sensed detection of hydrogen, obtains detecting induced-current, and this detection induced-current is further converted toBecome the voltage signal of corresponding ratio with responded to density of hydrogen, the gas of not sensed film inductionDischarge from the gas outlet of this induction sensing chamber, this voltage signal amplifies through amplifier is stable againAfter, be transferred to data acquisition unit by cable and carry out analog-to-digital conversion formation data signal, thenOutput to that display processing unit shows, storage and analyzing and processing.
Another enforcement in the present invention for the underground hydrogen monitoring system of monitoring of earthquake precursorsIn example, this gas collecting apparatus is the transparent cylindrical shell that bottom lock, top are provided with opening pipelineBody, the top of this cylindrical housings is hemisphere, and this opening pipeline comprises inlet channel, and this entersWaterpipe is arranged on the hemispheroidal side in this top, and with the vertical centering control axis of this cylindrical housingsBecome slanted angle, this inlet channel extends to form a water outlet port, this discharge downward verticallyRoad is arranged on this hemispheroidal center, cylindrical housings top, in the bottom of this cylindrical housingsBe provided with drainage pipeline, this cylindrical housings bottom inside be also provided with upwards extend and higher thanThe platform that dabbles of this drainage pipeline outlet, this platform that dabbles does not contact this water outlet port.
Another enforcement in the present invention for the underground hydrogen monitoring system of monitoring of earthquake precursorsIn example, this opening pipeline also comprises admission line, and this admission line is corresponding with this inlet channelBe arranged on this hemispheroidal opposite side, and become to tilt to press from both sides with the vertical centering control axis of this cylindrical housingsAngle, this inlet channel and admission line together with the inner tandem of this cylindrical housings, this air inletThe airtight connection of gas outlet of pipeline and this induction sensing chamber.
Another enforcement in the present invention for the underground hydrogen monitoring system of monitoring of earthquake precursorsIn example, this gas collecting apparatus comprises bottom opening and immerses the cylindrical housings in underground water, is somebody's turn to doThe top bore of cylindrical housings dwindles and upwards extends to tracheae, and this tracheae stretches out underground horizontalFace, is provided with admission line and collecting pipe at the top of this tracheae, the air inlet of this admission lineEnd connects bubbling device, and this admission line extends vertically downward and divides at its outlet side connection bubbleFrom device, this bubble stripper also immerses in underground water and covers in this cylindrical housings.
Another enforcement in the present invention for the underground hydrogen monitoring system of monitoring of earthquake precursorsIn example, airtightly between the outlet of this collecting pipe and the air inlet of this induction sensing chamber be serially connected with gas transmissionFlexible pipe and gas drier.
Another enforcement in the present invention for the underground hydrogen monitoring system of monitoring of earthquake precursorsIn example, between this air hose and gas drier, be also serially connected with for collecting this gas transmission softThe captation of pipe internal moisture.
Another enforcement in the present invention for the underground hydrogen monitoring system of monitoring of earthquake precursorsIn example, the inlet channel along continuous straight runs of this gas collecting apparatus arranges opening, edge after direction conversionVertical direction extends and pipe diameter convergent, until formation lowest calibre is the outlet of 1 millimeter,Below this outlet, be provided with the column type cavity that catchments, this cavity bottom along continuous straight runs that catchmentsExtend and set out the mouth of a river, near this water outlet end, upwards being extended by this cavity bottom that catchmentsBe an air collecting chamber isolated with this cavity that catchments, taper to a collection on this air collecting chamber topFeed channel.
The invention has the beneficial effects as follows: the invention discloses a kind of ground for monitoring of earthquake precursorsLower hydrogen monitoring method and system. This hydrogen monitoring method comprises that step aqueous vapor separates, induction inspectionSurvey, signal conversion and Graphics Processing, monitoring system comprises gas collecting apparatus, induction sensing chamber, numberAccording to collecting unit, display processing unit. Use this hydrogen monitoring method and system to realize rightThe aqueous vapor that dynamic and static underground water carries out continous-stable separates, and effectively extracts in underground water containedGas then detects hydrogen by sense film in induction sensing chamber, and hydrogen variable quantity is turnedBe changed to the variable quantity of electric current, and then be converted into voltage signal and come the change in concentration of monitoring hydrogen. .The method and system stability be reliable, high and be applicable to not to the monitoring accuracy of underground water hydrogenSame groundwater environment.
Brief description of the drawings
Fig. 1 is underground hydrogen monitoring method one embodiment of the present invention for monitoring of earthquake precursorsFlow chart;
Fig. 2 is underground hydrogen monitoring system one embodiment of the present invention for monitoring of earthquake precursorsComposition diagram;
Fig. 3 is the present invention underground another embodiment of hydrogen monitoring system for monitoring of earthquake precursorsInduction sensing chamber form schematic diagram;
Fig. 4 is the present invention underground another embodiment of hydrogen monitoring system for monitoring of earthquake precursorsGas collecting apparatus schematic diagram;
Fig. 5 is the present invention underground another embodiment of hydrogen monitoring system for monitoring of earthquake precursorsGas collecting apparatus schematic diagram;
Fig. 6 is the present invention underground another embodiment of hydrogen monitoring system for monitoring of earthquake precursorsGas collecting apparatus schematic diagram;
Fig. 7 is the present invention underground another embodiment of hydrogen monitoring system for monitoring of earthquake precursorsGas collecting apparatus schematic diagram;
Fig. 8 is the present invention underground another embodiment of hydrogen monitoring system for monitoring of earthquake precursorsGas collecting apparatus schematic diagram.
Detailed description of the invention
For the ease of understanding the present invention, below in conjunction with the drawings and specific embodiments, the present invention is enteredRow more detailed description. In accompanying drawing, provide preferred embodiment of the present invention. But, thisBright can realization in many different forms, is not limited to the described enforcement of this descriptionExample. On the contrary, providing the object of these embodiment is the understanding making disclosure of the present inventionMore comprehensively thorough.
It should be noted that, unless otherwise defined, all technology that this description uses andScientific terminology is identical with the implication that belongs to the common understanding of those skilled in the art of the present invention.The term using in description of the present invention is just in order to describe the order of specific embodiment, not for limiting the present invention. The term "and/or" that this description uses comprises oneIndividual or multiple relevant Listed Items arbitrarily with all combinations.
Below in conjunction with accompanying drawing, various embodiments of the present invention are elaborated.
Fig. 1 is underground hydrogen monitoring method one embodiment of the present invention for monitoring of earthquake precursorsFlow chart. Shown in Fig. 1, comprise 4 steps, i.e. aqueous vapor separation S101, induction detection S102,Signal conversion S103, Graphics Processing S104.
Aqueous vapor separates S101, separates gas contained in water outlet continuously from underground water, will divideFrom the gas collection going out continuous wave output, after super-dry is processed, be input to induction sensing chamber.
Exist underground hydrogen to be conventionally dissolved in underground water, in the time that underground water is upwards gushed out or oozed outThe corresponding hydrogen that has is discharged, particularly in the time that crustal bathyderm is movable obvious, and the discharge of underground hydrogenAmount there will be fluctuation to change, and this is the general principle of predicting earthquake by surveying hydrogen content. Therefore,When the Hydrogen Separation of dissolving in underground water out time, should be separated fully as far as possible, andThe method means of taking will have stability, and the measurement like this hydrogen content being changed reliably hasEffect.
For water,artesian-well, for example underground dynamic spring of constantly gushing out, continuously from underground waterThe method that separates institute's hydrogen in water outlet is: this underground water continuous-flow, falls through Vertical FreeBody motion, splashes a large amount of water droplets after falling the platform that dabbles, and realizes water separated from the gas, these water dropletsCollect rear discharge.
Here, in order to ensure the uniformity of measuring condition, underground water while requiring to carry out aqueous vapor separationIt is stable that continuous-flow will keep, and the flow of for example underground water is 6 liters/min. In addition, adoptThe altitude range of Vertical Free falling is 0.4 meter-1.0 meters. And overboard splashing to exceededThe object of the platform that dabbles of the water surface is for aqueous vapor separates fully, and the water droplet that forms of splashing down is more more manyLittle, be more conducive to overflowing of hydrogen in underground water. Adopt this aqueous vapor separation method to measureMinimum density of hydrogen content be 0.1ppm.
For hydrostatic level observation well water, the static well water that for example underground many places pool together, connectsThe continuous method that separates institute's hydrogen in water outlet from underground water is: this level of ground water in ground well,In the water of this ground well, blast continuously bubble, it is backward floating that these bubbles enter underground water, withTime subsidiary underground water in contained gas overflow together, realize water separated from the gas.
Here, in order to ensure the uniformity of measuring condition, require to continuous uniform drum in ground well water,The air pressure range that enters bubble is 50Pa-500Pa. The higher bubble blasting of air pressure is more much faster, moreThe hydrogen that is conducive to dissolve in well water overflows, but bubble also can bring too much density of hydrogen underFall. Therefore, connection in ground well is blasted to bubble will rationally be controlled, and keeps bubble at 2-5Individual/second, bubble mean diameter is 0.001-0.005 rice. Adopt this aqueous vapor separation method passableThe minimum density of hydrogen content of measuring is 0.1ppm.
Induction detects S102, and in induction sensing chamber, gas only has hydrogen during by sense filmSensed sensing chamber, by the current signal of this sense film of flowing through, further obtain with respond toDensity of hydrogen become the voltage signal of corresponding ratio.
Signal conversion S103, after amplifier amplifies, then carries out mould by described voltage signalNumber conversion, obtains reflecting the data signal of hydrogen content.
Here, voltage signal just need to be conducive to after the amplification of amplifier on circuit, carry outTransmission. Voltage range after amplifier amplifies is ± 2V. Obtain number through analog-to-digital conversionWord signal, is convenient to carry out digitized transmission and processing like this, is conducive on computer networkTransmit, storage and display analysis etc.
Graphics Processing S104, shows, transmits, stores and analyze this data signalProcess, in order to the dynamic change situation of hydrogen content to be described.
This step belongs to man-machine interaction processing, and object is to provide the current of hydrogen content variation and goes throughHistory status information, by hydrogen content situation of change is analyzed, is further earthquake predictionAnalysis provides foundation.
Compared with prior art, the underground hydrogen monitoring method of the present invention shown in Fig. 1 embodiment providesThe method of hydrogen content in monitoring underground water, the side that gas in underground water is carried out to aqueous vapor separationMethod is applicable to dynamic underground water and static underground water, and aqueous vapor separate time adopt current to splash toDabble platform, can ensure to isolate to greatest extent to the technological means that blasts bubble in underground waterHydrogen. Guaranteed on the whole can be to low concentration content in underground water for these method and measures aboveHydrogen also can detect, improved the precision detecting, and there is good stability and suitableYing Xing.
Based on same for the underground hydrogen monitoring method embodiment of monitoring of earthquake precursors shown in Fig. 1One design, Fig. 2 is underground hydrogen monitoring system one enforcement of the present invention for monitoring of earthquake precursorsThe composition diagram of example. Fig. 2 comprise gas collecting apparatus 21, induction sensing chamber 22, power supply unit 23,Data acquisition unit 24, display processing unit 25. Fig. 3 is that the present invention supervises for seismic precursorThe induction sensing chamber of underground another embodiment of hydrogen monitoring system surveying forms schematic diagram. Fig. 3 institute22 embodiment of induction sensing chamber that show are cylindrical structure, and Fig. 3 is its cross-sectional schematic, mainComprise air inlet 221, gas outlet 222, sense film 223, separate cavities 224, cable 225.
The work of this underground hydrogen monitoring system embodiment is described below in conjunction with Fig. 2 and Fig. 3Journey. Here the outlet of the collecting pipe of gas collecting apparatus 21 and the air inlet 221 of responding to sensing chamber 22,Airtight connection, the gas being gathered by gas collecting apparatus 21 enters after induction sensing chamber 22, through senseWhile answering film 223, only there is hydrogen can be responded to detection by this sense film 223, this sense film 223Be arranged in the bottom of the separate cavities 224 of induction sensing chamber 22. Can find out separate cavities 224The top that is arranged on induction sensing chamber 22, is isolated into induction sensing chamber 22 inner spaces thusTwo parts, the gas entering from air inlet 221 only has by sense film 223 could pass through isolationDischarge the gas outlet 222 of 224 tops, chamber. Ensure that thus institute's hydrogen can be fully sensedFilm 223 inductions detect, and other gases by sense film 223 go out from induction sensing chamber 22Gas port 222 is discharged. The induced-current that sense film 223 detects is transferred to by cable 225Change-over circuit, is further converted to this current signal with responded to density of hydrogen and becomes corresponding ratioThe voltage signal of example, this voltage signal amplifies processing by amplifier and is transferred to data acquisitionUnit 24 carries out analog-to-digital conversion and forms data signal, exports to display processing unit 25, completesThe processing such as Digital Transmission, storage and display analysis, display processing unit 25 can be common meterCalculation machine. Power supply unit 23 in Fig. 2 is mainly that sense film 223 in induction sensing chamber 22 is feltShould detect and power.
The gas outlet 222 of responding to sensing chamber 22 in Fig. 3 can not connect other devices and directlyWith outside air intercommunication, ensure in induction sensing chamber 22 all the time in normal barometric pressure state. AlsoGas outlet 222 can be connected with gas collecting apparatus 21 is airtight, at induction sensing chamber 22 and gas collectionBetween device 21, form circulation canal, can ensure that like this residual gas does not leak, strengthen inspectionThe degree of accuracy of surveying. Due to gas collecting apparatus 21 and extraneous intercommunication, therefore also ensure that induction detectsIn chamber 22 and gas collecting apparatus 21, it is normal barometric pressure state.
Fig. 4 is the present invention underground another embodiment of hydrogen monitoring system for monitoring of earthquake precursorsGas collecting apparatus cross-sectional schematic. In Fig. 4, this gas collecting apparatus 41 seals, pushes up for bottom 42Portion 43 is provided with the transparent cylindrical housing of opening pipeline, and the top 43 of this cylindrical housings isHemisphere, opening pipeline comprises inlet channel 44, inlet channel is arranged on described top hemisphereA side, and become slanted angle, inlet channel 44 with the vertical centering control axis of described cylindrical housingsExtend to form downward vertically a water outlet port that does not contact described cylindrical housings bottom 4246, described collecting pipe 45 is arranged on hemispheroidal center, described cylindrical housings top,Bottom in described cylindrical housings is also provided with drainage pipeline 47.
Be provided with the upwardly extending umbrella-shaped structure platform that dabbles in 42 inner sides, this cylindrical housings bottom48, the platform 48 that dabbles does not contact inlet channel 44 at the inner water outlet port extending of cylindrical housings46. Increasing the platform 48 that dabbles is conducive to after water splashes to the platform 48 that dabbles to form more little waterDrip, aqueous vapor separates fully. In addition, it can also be seen that from Fig. 4, the top of this platform 48 that dabbles,Be the outlet of umbrella part higher than drainage pipeline 47, can ensure like this in this gas collecting apparatusThe horizontal plane of storage can, higher than the top of this platform 48 that dabbles, not ensure from water outlet port all the time46 water that splash down always can be fallen this and dabble on platform 48. Certainly, except this umbrella-shaped structureOutward, other similar structures, as cone, cylinder with scarf etc. all belong to of the present inventionProtection domain.
Fig. 5 is the underground hydrogen monitoring system for monitoring of earthquake precursors in the present invention shown in Fig. 4Another gas collecting apparatus embodiment schematic diagram on embodiment basis. Wherein, gas collecting apparatus 41 toThe function of drainage pipeline 47 is identical with Fig. 4, repeats no more. Difference is: open tubeRoad also comprises admission line 49, and this admission line 49 is corresponding with inlet channel 44 is arranged on halfThe opposite side at spheroid top 43, and become slanted angle with the vertical centering control axis of this cylindrical housings,This admission line 49 and inlet channel 44 together with the inner tandem of this cylindrical housings, andAdmission line 49 and airtight connection of gas outlet 222 of responding to the embodiment of sensing chamber shown in Fig. 3.
Gas collecting apparatus embodiment shown in Fig. 4 and Fig. 5 is mainly used in artesian well dynamic flowMoving underground water carries out aqueous vapor separation. Underground water enters this gas collecting apparatus by inlet channel 44In 41, underground water enters the flow of inlet channel 44 and can control, be preferably 6 liters/Minute, water outlet port 46 is 0.4 meter-1.0 meters to the altitude range at platform 48 tops that dabble.
Fig. 6 is the present invention underground another embodiment of hydrogen monitoring system for monitoring of earthquake precursorsGas collecting apparatus generalized section. Compare figure with the embodiment of gas collecting apparatus shown in Fig. 5 with Fig. 4The embodiment of gas collecting apparatus shown in 6 is mainly used in hydrostatic level observation well water. In Fig. 6, well head 501Both sides are boreholes wall 502, well head 501 inside are the well water face 505 that well water arrives, thisWell water in hydrostatic level inspection well is mainly that underground water permeates gradually to collect and forms. Shown in Fig. 6Gas collecting apparatus comprise bottom opening and immerse the cylindrical housings 503 in underground water, this circleThe top bore of cylindrical shell 503 dwindles and upwards extends to tracheae 504, and this tracheae 504 is stretchedGo out well water face 505, be provided with admission line 507 and collecting pipe 510 at the top of tracheae 504.The inlet end of this admission line 507 connects bubbling device 508, and admission line 507 vertically downwardExtend and connect bubble stripper 506 in its outlet side, this bubble stripper 506 also immerses groundIn lower water and cover in this cylindrical housings 503, collecting pipe 510 outlets and induction sensing chamberAir inlet between airtight air hose 511 and gas drier 512, the discharge of being serially connected withThe airtight connection of import of road 510 and air hose 511, the outlet of air hose 511 and gasThe airtight connection of entrance point of drying device 512, the port of export of gas drier 512 is for giving vent to angerMouth 513.
In Fig. 6, be also provided with flowmeter 509 at admission line 507 near bubbling device 508 places,Measure demonstration for the gas flow that bubbling device 508 is produced, thereby can control drumBulb apparatus 508 produces suitable bubble.
Fig. 7 is the present invention based on Fig. 6 underground hydrogen monitoring system for monitoring of earthquake precursorsThe gas collecting apparatus generalized section of another embodiment. Wherein, well head 501 is to gas outlet 513Function is identical with Fig. 6, repeats no more. Difference is: at air hose 511 and gasBetween drying device 512, be serially connected with the dress that catchments for collecting these air hose 511 internal moisturePut 514.
Fig. 8 is the present invention's underground another enforcement of hydrogen monitoring system for monitoring of earthquake precursorsThe gas collecting apparatus schematic diagram of example. Wherein, inlet channel 81 is that along continuous straight runs arranges opening 82,After direction conversion, extend and pipe diameter convergent at vertical direction, until form lowest calibre beThe outlet 83 of 1 millimeter, so that form in outlet 83 effect that High-Pressure Water flows out. Preferably,The bore scope of this outlet 83 is 1 millimeter to 5 millimeters. The below of outlet 83 arranges column typeThe cavity 84 that catchments, these cavity 84 bottom along continuous straight runs that catchment extend and set out the mouth of a river 85,Near delivery port 85 ends, upwards extend to one and the cavity that catchments by cavity 84 bottoms of catchmenting84 isolated air collecting chambers 86, taper to a collecting pipe 87 on these air collecting chamber 86 tops,Outlet 88 by this collecting pipe 87 can with airtight connection of air inlet of induction sensing chamber.
Based on above embodiment, underground hydrogen monitoring method provided by the invention comprises step aqueous vaporSeparate, respond to detection, signal conversion and Graphics Processing, monitoring system comprises gas collecting apparatus, senseAnswer sensing chamber, data acquisition unit, display processing unit. Use this hydrogen monitoring method and beSystem can be realized the aqueous vapor that dynamic and static underground water are carried out to continous-stable and separate, and effectively extractsContained gas in underground water is then responded to and is detected hydrogen by sense film in induction sensing chamber,Hydrogen variable quantity is converted to the variable quantity of electric current, and then is converted into voltage signal and carrys out monitoring hydrogenChange in concentration. The method and system stability be reliable, high to the monitoring accuracy of hydrogen in underground water,And be applicable to different groundwater environment.
The foregoing is only embodiments of the invention, not thereby limit patent model of the present inventionEnclose, every equivalent structure transformation that utilizes description of the present invention and accompanying drawing content to do, or directlyOr be indirectly used in other relevant technical fields, include in scope of patent protection of the present inventionIn.
Claims (10)
1. for a underground hydrogen monitoring method for monitoring of earthquake precursors, it is characterized in that,
Aqueous vapor separates, and separates continuously contained gas in water outlet, by isolated gas from underground waterBody collects and continuous wave output, after super-dry is processed, is input to induction sensing chamber;
Induction detects, and in described induction sensing chamber, described gas only has hydrogen during by sense filmThe sensed detection of gas, by the current signal of the described sense film of flowing through, further obtain with feelThe density of hydrogen of answering becomes the voltage signal of corresponding ratio;
Signal conversion, after amplifier amplifies, then carries out analog-to-digital conversion by described voltage signal,Obtain reflecting the data signal of hydrogen content;
Graphics Processing, to described data signal show, transmission, storage and analyzing and processing,In order to the dynamic change situation of hydrogen content to be described.
2. the underground hydrogen monitoring side for monitoring of earthquake precursors according to claim 1Method, is characterized in that, describedly continuously from underground water, separates the method for contained gas in water outlet and is:Described underground water continuous-flow, through Vertical Free falling, fall splash after the platform that dabbles largeWater gaging drips, and realizes water separated from the gas, and described water droplet collects rear discharge.
3. the underground hydrogen monitoring side for monitoring of earthquake precursors according to claim 1Method, is characterized in that, describedly continuously from underground water, separates the method for contained gas in water outlet and is:Described level of ground water, in ground well, blasts continuously bubble in described underground water, and described bubble entersEnter underground water backward floating, in subsidiary described underground water, contained gas overflows together simultaneously, realExisting water is separated from the gas.
4. for a underground hydrogen monitoring system for monitoring of earthquake precursors, comprise for gatheringIn underground water, the gas collecting apparatus of contained gas, is characterized in that, the discharge of described gas collecting apparatusRoad outlet and airtight connection of air inlet of responding to sensing chamber, the gas after aqueous vapor separates entersAfter described induction sensing chamber, the only sensed detection of hydrogen to some extent during through sense film, is examinedSurvey induced-current, described detection induced-current is further converted to responded to density of hydrogenThe voltage signal of corresponding ratio, gas the going out from described induction sensing chamber of not sensed film inductionGas port is discharged, and described voltage signal after the stable amplification of amplifier, transmits by cable againCarry out analog-to-digital conversion to data acquisition unit and form data signal, then output to display processing unitShow, storage and analyzing and processing.
5. the underground hydrogen monitoring for monitoring of earthquake precursors according to claim 4 isSystem, is characterized in that, described gas collecting apparatus is that bottom lock, top are provided with opening pipelineTransparent cylindrical housing, the top of described cylindrical housings is hemisphere, described opening pipeline bagDraw together inlet channel, described inlet channel is arranged on the hemispheroidal side in described top, and with describedThe vertical centering control axis of cylindrical housings becomes slanted angle, and described inlet channel extends shape downward verticallyBecome a water outlet port, it is hemispheroidal that described collecting pipe is arranged on described cylindrical housings topCenter, is provided with drainage pipeline in the bottom of described cylindrical housings, at described circular cylindrical shellBody bottom inside is also provided with the platform that dabbles that upwards extends and export higher than described drainage pipeline, instituteState the platform that dabbles and do not contact described water outlet port.
6. the underground hydrogen monitoring for monitoring of earthquake precursors according to claim 5 isSystem, is characterized in that, described opening pipeline also comprises admission line, described admission line and instituteState that inlet channel is corresponding is arranged on described hemispheroidal opposite side, and with described cylindrical housingsVertical centering control axis become slanted angle, described inlet channel and admission line are at described circular cylindrical shellThe inner tandem of body together, described admission line and the described airtight company in gas outlet that responds to sensing chamberConnect.
7. the underground hydrogen monitoring for monitoring of earthquake precursors according to claim 4 isSystem, is characterized in that, described gas collecting apparatus comprises bottom opening and immerses the circle in underground waterCylindrical shell, the top bore of described cylindrical housings dwindles and upwards extends to tracheae, described inTracheae stretches out underground water plane, is provided with admission line and discharge at the top of described tracheaeRoad, the inlet end of described admission line connects bubbling device, and described admission line prolongs vertically downwardStretch and connect bubble stripper in its outlet side, described bubble stripper also immerse in underground water andCover in described cylindrical housings.
8. the underground hydrogen monitoring for monitoring of earthquake precursors according to claim 7 isSystem, is characterized in that, between described collecting pipe outlet and the described air inlet of responding to sensing chamberAirtight air hose and the gas drier of being serially connected with.
9. the underground hydrogen monitoring for monitoring of earthquake precursors according to claim 8 isSystem, it is characterized in that, between described air hose and gas drier, be also serially connected with forCollect the captation of described air hose internal moisture.
10. the underground hydrogen monitoring for monitoring of earthquake precursors according to claim 4 isSystem, is characterized in that, the inlet channel along continuous straight runs of described gas collecting apparatus arranges opening, warpAfter direction conversion, vertically extending and pipe diameter convergent, is 1 until form lowest calibreThe outlet of millimeter is provided with the column type cavity that catchments, described collect cavity below described outletBody bottom along continuous straight runs extends and sets out the mouth of a river, at close described water outlet end, by describedThe cavity bottom that catchments upwards extend to one with described in the isolated air collecting chamber of cavity that catchments, in instituteState air collecting chamber top and taper to a collecting pipe.
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