CN208366682U - Seismological observation escapes trace hydrogen on-line monitoring system with tomography - Google Patents

Abstract

The utility model relates to a kind of seismological observation tomographies to escape trace hydrogen on-line monitoring system, including gas collection pretreatment unit in situ, the first solenoid valve, second solenoid valve, sampling pump, quantity tube, gas splitter, hydrogen gas detector, exhaust gas processing device, circulation air pump and governor circuit, on Observation of fault activity hole, gas collection pretreatment unit, the first solenoid valve, quantity tube, second solenoid valve, sampling pump and gas outlet in situ are sequentially connected the air intake port cover of gas collection pretreatment unit in situ；First solenoid valve is successively connected through gas splitter, hydrogen gas detector, exhaust gas processing device, circulation air pump with second solenoid valve again；First solenoid valve, second solenoid valve, sampling pump, circulation air pump and hydrogen gas detector are connected with governor circuit respectively.The utility model is easy to operate, can continuously be automatically performed hydrogen measurement in situ, and timeliness is good, and detection sensitivity is high, and accuracy is high, adapts to field Observation of fault activity environment, meets earthquake precursor observation requirement.

Description

Seismological observation escapes trace hydrogen on-line monitoring system with tomography

Technical field

The utility model relates to a kind of seismic precursor underground fluid Gas observation methods in geochemical field and observation to set Standby more particularly to a kind of seismological observation escapes trace hydrogen on-line monitoring system with tomography.

Background technique

Tomography is the better channels of earth interior gas transfer and evolution, and creep, the changing of the relative positions and the rupture of tomography are to cause ground The reason of shake, while the migration that internal gas can be caused different degrees of.Content of the hydrogen in earth's surface air only have 0.5~ 1ppm, but there are a large amount of hydrogen for Earth, exist to adsorb the state of dissolved hydrogen and hydrocarbon, mainly pass through fracture The rock and soil of band are discharged, or are discharged as the GEOTHERMAL WATER of deeper cavity is carried by hot spring dew point.Tomography is answered in construction It can be slided under power effect, the rock property, the structure of matter on fault plane can change, so as to cause subsurface material, gas The change of body migration pathway and Migration mark, therefore the evolution of faulting and hydrogen has certain correlation, and tomography hydrogen Distinguishing feature exactly changes on room and time all larger.

China has started the research of deep evolution hydrogen and Relations To Earthquakes in 70~eighties of 20th century, to 2015 Year, the hydrogen observation station of the China for seismological observation has been approached 20.Currently, common both at home and abroad escape hydrogen observation method It is to pass through gas-chromatography --- thermal conductivity method taken at regular intervals sample send laboratory testing, and the hydrogen detection of this method is limited to 10ppm. It is cumbersome, at high cost due to gas chromatograph, and detect limit and be much higher than air background value, continuous observation can not be formed, is led Cause it ineffective in earthquake precursor observation.

In the prior art, following problems are primarily present to the observation of tomography evolution trace hydrogen:

1. precision is low, the trace hydrogen concentration in air cannot be distinguished from.The density of hydrogen of earth's surface is generally lower, about 0.5~ 1ppm, existing observation technology generally can not accurately detect 10ppm trace density of hydrogen below, for seismic precursor tomography The background observation of gas content observing has a significant impact.

2. existing monitoring system automation degree is low, artifical influence factor is more.Seismic precursor tomography emergent gas Variation is changed with underground activities, and only continuous observation just facilitates to find the variation of underground activities, and existing monitoring System is unable to continuous observation, but needs by being just able to achieve observation after manual sampling and transport, therefore can generate large error.

3. formation gas acquisition method causes observation fluctuation big, seismic anomaly cannot be distinguished vulnerable to environmental disturbances.It is modern Mankind's activity and the influence lived to seismological observation are very big, and the variation for easily causing observing environment causes observation to increase extremely, Many difficulties are brought to earthquake precursor observation analysis.

Summary of the invention

In order to solve the above-mentioned technical problem the utility model, it is online to provide a kind of seismological observation tomography evolution trace hydrogen Monitoring system, automation and intelligentification degree is high, can measure air background value, can continuously be automatically performed hydrogen measurement in situ, Timeliness is good, and accuracy is high, adapts to field Observation of fault activity environment, meets earthquake precursor observation requirement.

Another object of the present invention is to provide a kind of seismological observation tomography evolution trace hydrogen on-line monitoring system, row Except environmental impact factor, environmental factor amendment is carried out to the hydrogen value measured, the accuracy and reliability of hydrogen detection is improved, mentions The environmental suitability of high monitoring system.

Above technical problems of the utility model are mainly solved by the following technical scheme: the utility model Seismological observation escapes trace hydrogen on-line monitoring system, including gas collection pretreatment unit in situ, the first solenoid valve, second with tomography Solenoid valve, sampling pump, quantity tube, gas splitter, hydrogen gas detector, exhaust gas processing device, circulation air pump and governor circuit, The air intake port cover of gas collection pretreatment unit in situ is gas collection pretreatment unit in situ, the first solenoid valve, quantitative on Observation of fault activity hole Pipe, second solenoid valve and sampling pump are sequentially connected, and the efferent duct of sampling pump connects gas outlet；First solenoid valve is separated with gas again Column is connected, and gas splitter, hydrogen gas detector, exhaust gas processing device and circulation air pump are sequentially connected, and recycles the output of air pump Pipe is connected with second solenoid valve again；First solenoid valve, second solenoid valve, sampling pump, circulation air pump and hydrogen gas detector difference It is connected with governor circuit.Gas collection pretreatment unit, the first solenoid valve, quantity tube, second solenoid valve, sampling pump and gas outlet in situ Constitute acquisition gas circuit；First solenoid valve, gas splitter, hydrogen gas detector, exhaust gas processing device, circulation air pump, the second electricity Magnet valve and quantity tube constitute closed circulation and detect gas circuit.The work of acquisition gas circuit, tomography emergent gas are located in advance through gas collection in situ first After managing device acquisition and pretreatment, under the drive of sampling pump, the first solenoid valve, quantity tube, second solenoid valve and sampling are flowed through Pump is finally flowed out from gas outlet, to determine the volume of sample gas, realizes the quantitative collection of sample gas；Then detection gas circuit work, by following Ring air pump provides gas circulation power, and the sample gas after quantifying separates post separation through the first solenoid valve inflow gas splitter, gas Hydrogen in sample gas out, hydrogen flow into hydrogen gas detector, hydrogen gas detector export reflect density of hydrogen transducing signal to Governor circuit, gas flows into vent gas treatment resume module later, finally flows through circulation air pump and flows to second solenoid valve, finally from out Port discharge.Governor circuit completes human-computer dialogue and the integrated control of system, according to the action command of input, carries out a series of Gas production, measurement operation analyze transducing signal, and data are saved and shown.And there can be net with completion timing automatic measurement Network communication and remote control function.The utility model automation and intelligentification degree is high, can continuously be automatically performed hydrogen measurement in situ, Timeliness is good, and accuracy is high, adapts to field Observation of fault activity environment, meets earthquake precursor observation requirement.

Preferably, the hydrogen gas detector includes hemispherical shell and the hydrogen induction member in shell Part, shell are tightly connected by planar shaped bottom surface and the hemisphere mask body covered on bottom surface, and the central point of hemisphere mask body is set There is inlet channel, inlet channel is connected with the gas splitter, and the lower part of hemisphere mask body is equipped with outlet passageway, and outlet is logical Road is connected with the exhaust gas processing device, and the hydrogen sensing element is located on bottom surface, and hydrogen sensing element is using magnetic The multi-layer nano laminated film that control sputtering method is coated with, including bottom, middle layer and surface layer, bottom are metal copper film layer, in Interbed is hydrogen-sensitive semiconductor oxide film layer, and surface layer is palladium --- transition element alloy firm layer, hydrogen sensing element draw Pin out, pin pass through bottom surface and stretch out shell and be connected with the governor circuit.Have using palldium alloy to hydrogen good Selectivity, when hydrogen sensing element contacts hydrogen, the surface layer nano thin-film of hydrogen sensing element adsorbs hydrogen molecule, in hydrogen molecule Atom infiltrate through the atomic layer in film, form palladium hydrogen compound with the palladium atom in film, the generation of noval chemical compound so that The physical property of film changes, and distortion of lattice causes the electron mobility of film to change, this electron mobility and film Suction hydrogen concentration it is related, therefore pass through electron mobility you can get it the density of hydrogen of measurement film.Hydrogen gas detector utilizes Gas increases the contact rate of gas and sensing element, improves detection accuracy in the indoor reflection of hemispherical gas.

Preferably, being equipped with Temperature Humidity Sensor in the shell, Temperature Humidity Sensor is mounted on the hemisphere face of shell The transducing signal of cover inner wall, Temperature Humidity Sensor output is connected with the governor circuit.The temperature and humidity value of gas is acquired, is used To exclude environmental impact factor, environmental factor amendment is carried out to the hydrogen value measured, reduces field measurement environmental disturbances factor, mentions The accuracy and reliability of high hydrogen detection, improves the environmental suitability of monitoring system.

Preferably, the gas collection pretreatment unit in situ includes gas collecting apparatus and filter device in situ, gas collection in situ Device is an inverted funnel type cover, and cover covers on Observation of fault activity hole, and the top connecting adapter of cover, adapter passes through Pipeline is connected with the filter device, and filter device is connected with first solenoid valve again.Funnel type cover is for direct The gas overflowed in peephole (well) is collected, filter device is for separating the steam in gas and the dust less than 10um Grain, avoids enter into internal system gas circuit and causes airway blockage.

Preferably, the filter device includes connected dirt catcher and steam-water separator, dirt catcher is located at carbonated drink point Front end from device, i.e. one end of dirt catcher are connected by pipeline with the adapter, the other end of dirt catcher by pipeline with Steam-water separator is connected, and steam-water separator is connected with first solenoid valve again.Dirt catcher includes the hydrophobic filter membrane of PTFE, dust filtering Device is used to remove the tiny dust particles in gas, prevents from entering the equipment such as quantity tube, gas splitter and causing airway blockage. Steam-water separator includes Straight quartz ampoule and the spiral quartz ampoule and central tube that are located in Straight quartz ampoule, Straight quartz Pipe, spiral quartz ampoule and central, tubular are at three cavitys of steam-water separator, and spiral quartz ampoule is by being helically wound around central tube On, the inlet end of spiral quartz ampoule is connected with dirt catcher, and the outlet side of central tube is connected with first solenoid valve, Straight Quartzy closed frame tube is filled with coolant liquid.For steam-water separator for separating to the steam in test sample gas, sample gas enters spiral quartz For pipe under the action of coolant liquid, for condensation vapor at liquid, sample gas enters central tube using the diffusion hole of spiral quartz ampoule, then by Sample gas is discharged in central tube.Filter device mainly removes dust particles and steam in sample gas, and impurity is avoided to enter monitoring system It detects gas circuit and causes pipeline blockage, improve the stability of monitoring system.

Preferably, the gas splitter is the cylinder of an inner hollow, column body is small filled with porous carbon The sphere diameter of ball, porous carbon bead is all the same.Gas passes through splitter, because each component is different in the adsorptivity of splitter in gas, So that Time Inconsistency of the different component by splitter, and hydrogen is that adsorptivity is minimum and the smallest component of atomic radius, because This passes through splitter earliest.The separate time intervals of hydrogen and other gases only need 2 seconds, improve the detection accuracy of sensor.

Preferably, the exhaust gas processing device is a transparent cylinder, column body has cavity, and having in cavity can The filter medium of colour developing, filter medium are anhydrous cupric sulfate or discoloration silica gel.Exhaust gas processing device mainly removes hydrogen and induction Steam after element adsorption reaction, gaseous product after avoiding hydrogen adsorption contacted again with the sensing element of hydrogen gas detector and Influence transducer sensitivity.Filter medium is replaceable, reduces maintenance cost.

Preferably, the governor circuit includes microprocessor unit, signal processing unit, data storage cell, shows Show unit, wireless communication unit and provides the power supply unit of operating voltage, the hydrogen gas detector output for governor circuit Transducing signal be connected with the signal processing unit, signal processing unit, data storage cell, display unit, channel radio News unit be connected respectively with microprocessor unit, microprocessor unit respectively with first solenoid valve, second solenoid valve, adopt Sample pump and circulation air pump are connected.Display unit uses touch display screen, realizes human-computer interaction, microprocessor unit is according to input Action command carries out a series of gas production, measurement operation, and signal processing unit is analyzed and handled to transducing signal, and is sent Data are saved and are shown by microprocessor unit.Data storage cell includes measured database and system monitoring library, measurement data Library is named data packet according to earthquake precursor observation industry standard, in addition to concentration data, also incidentally temperature, barometric information； System monitoring library saves the running log and exception information of system intelligent monitoring, safeguards and provides point for the unattended operation of system Analyse data.Data storage cell is stored using the symmetrical backup mode of redundancy, prevents storage chip because using overlong time shape At bad block cause historical data to lose, data can be stored (longest was up to 5 years) with long-time stable, improve the long-term steady of system It is qualitative.Wireless communication unit realizes telecommunication, convenient for network remote monitoring and remote diagnosis and upgrading, realizes that seismic precursor is seen Field unattended observation in survey.

The beneficial effects of the utility model are: realizing that tomography escapes continuously adopting for gas by gas collection pretreatment unit in situ Sample avoids operating error caused by artificial gas production；Sample air volume is determined by quantity tube, and gas is realized by gas splitter From separation, the detection limit of system is reduced；The multi-layer nano laminated film that hydrogen sensing element uses magnetically controlled sputter method to be coated with, Improve detection sensitivity；Environmental factor compensation is realized by measuring multiple parameters, is avoided the interference in field environment observation, is improved hydrogen The accuracy and reliability of gas detection, improves the environmental suitability of monitoring system.Reach network monitoring and remote by wireless telecommunications The purpose of journey diagnosis realizes the field unattended observation in earthquake precursor observation, reduces O&M cost.The utility model is automatic It is high to change intelligence degree, it is easy to operate, air background value can be measured, hydrogen measurement in situ, timeliness can be continuously automatically performed Good, accuracy is high, adapts to field Observation of fault activity environment, meets earthquake precursor observation requirement.

Detailed description of the invention

Fig. 1 is a kind of system structure diagram of the utility model.

Fig. 2 is a kind of structural schematic diagram of original position gas collection pretreatment unit in the utility model.

Fig. 3 is a kind of schematic cross-sectional view of hydrogen gas detector in the utility model.

Fig. 4 is a kind of circuit theory connection block diagram of governor circuit in the utility model.

1. first solenoid valve in figure, 2. second solenoid valves, 3. third solenoid valves, 4. gas collection pretreatment units in situ, 5. adopt Sample pump, 6. quantity tubes, 7. gas splitters, 8. exhaust gas processing devices, 9. circulation air pumps, 10. hydrogen gas detectors, 11. bottom surfaces, 12. hemisphere mask body, 13. inlet channels, 14. outlet passageways, 15. hydrogen sensing elements, 16. pins, 17. temperature and humidity sensings Device, 21. microprocessor units, 22. signal processing units, 23. data storage cells, 24. display units, 25. wireless telecommunications lists Member, 26. power supply units, 31. sample gas air inlet pipe, 32. air intake ducts, 33. gas outlets, 41. gas collecting apparatus in situ, 42. switchings Head, 43. dirt catchers, 44. Straight quartz ampoules, 45. spiral quartz ampoules, 46. central tubes.

Specific embodiment

Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.

Embodiment: the seismological observation of the present embodiment escapes trace hydrogen on-line monitoring system with tomography, as shown in Figure 1, packet Include gas collection pretreatment unit 4 in situ, the first solenoid valve 1, second solenoid valve 2, third solenoid valve 3, sampling pump 5, quantity tube 6, gas Body splitter 7, hydrogen gas detector 10, exhaust gas processing device 8, circulation air pump 9 and governor circuit, third solenoid valve, the first electricity Magnet valve, quantity tube, second solenoid valve and sampling pump are sequentially connected, third solenoid valve be separately connected sample gas air inlet pipe 31 and air into Tracheae 32, sample gas air inlet pipe and gas collection pretreatment unit in situ, the air intake port cover of gas collection pretreatment unit in situ is in Observation of fault activity The efferent duct of Kong Shang, sampling pump connect gas outlet 33；First solenoid valve is connected with gas splitter again, gas splitter, hydrogen Detection device, exhaust gas processing device and circulation air pump are sequentially connected, and the efferent duct for recycling air pump is connected with second solenoid valve again.It is former Position gas collection pretreatment unit, third solenoid valve, the first solenoid valve, quantity tube, second solenoid valve, sampling pump and gas outlet, which are constituted, adopts Collect gas circuit；First solenoid valve, gas splitter, hydrogen gas detector, exhaust gas processing device, circulation air pump, second solenoid valve and Quantity tube constitutes closed circulation and detects gas circuit.

As shown in Fig. 2, gas collection pretreatment unit 4 in situ includes gas collecting apparatus 41 and filter device in situ, gas collection dress in situ Setting is an inverted funnel type cover, and cover covers on Observation of fault activity hole, the top connecting adapter 42 of cover.Funnel type cover It is the well head of peephole (inspection well) for directly collecting the gas overflowed in peephole (inspection well), below cover, well head is straight Diameter is generally 110~150mm.Adapter is for being fixedly connected with gas piping.Cover material is that stainless steel, polytetrafluoroethylene (PTFE) etc. are low Adsorptivity, resistant material, adapter gas outlet are directly generally 10~20mm, and material is corrosion-resistant high molecular material.Filtering Device includes connected dirt catcher 43 and steam-water separator.Dirt catcher is located at the front end of steam-water separator, and adapter passes through pipeline It is connected with dirt catcher, dirt catcher includes the hydrophobic filter membrane of PTFE, for removing the tiny dust particles in gas, prevents from entering quantitative The equipment such as pipe, gas splitter and cause airway blockage, the aperture of filter membrane is 0.45~5 μm.Steam-water separator for separate to Condensation aqueous vapor in test sample gas, steam-water separator include Straight quartz ampoule 44 and the spiral quartz in Straight quartz ampoule Pipe 45 and central tube 46, three cavitys of Straight quartz ampoule, spiral quartz ampoule and central, tubular at steam-water separator, spiral stone By being helically wound around on central tube, the inlet end of spiral quartz ampoule is connected English pipe with dirt catcher, the outlet side of central tube and One solenoid valve is connected, and Straight quartz closed frame tube is filled with coolant liquid.Sample gas enters spiral quartz ampoule in the effect of coolant liquid Under, for condensation vapor at liquid, sample gas enters central tube using the diffusion hole of spiral quartz ampoule, then by central tube be discharged sample gas to Third solenoid valve.Filter device mainly removes dust particles and steam in sample gas, and impurity is avoided to enter the detection of monitoring system Gas circuit and cause pipeline blockage, improve monitoring system stability.

As shown in figure 3, hydrogen gas detector 10 includes hemispherical shell and the hydrogen sensing element in shell, Shell is tightly connected by planar shaped bottom surface 11 and the hemisphere mask body 12 covered on bottom surface, forms hemispherical gas chamber, hemisphere The central point of mask body is equipped with inlet channel 13, and inlet channel is connected with gas splitter, and the lower part of hemisphere mask body is equipped with Gas channel 14, outlet passageway is connected with exhaust gas processing device, and hydrogen sensing element 15 is located on bottom surface.Hydrogen sensing element is to adopt The multi-layer nano laminated film being coated with magnetically controlled sputter method, including bottom, middle layer and surface layer.Bottom is metal copper film Layer, as substrate material, film thickness is 8~450nm；Middle layer is hydrogen-sensitive semiconductor oxide film layer, by 2 layers of sull Composition, with a thickness of 2~10nm；Surface layer is palladium --- transition element alloy firm layer, with a thickness of 0.5~2nm.Each layer film Difference of thermal expansion coefficient is no more than 5%.Film is coated with using magnetically controlled sputter method, and the sensitivity of every tunic thickness and sensor has It closes, the film thickness range of sensing element is 10~500nm.Hydrogen sensing element draws pin 16, and pin passes through bottom surface and stretches out shell. Temperature Humidity Sensor 17 is also equipped on the inner wall of hemisphere mask body.Hydrogen gas detector is indoor in hemispherical gas using gas Reflection, increases the contact rate of gas and sensing element, improves detection accuracy.The temperature of Temperature Humidity Sensor detection sample gas, Humidity data, to realize environmental factor amendment to the density of hydrogen measured.

Gas splitter is the cylinder of an inner hollow, and column body is filled with porous carbon bead, porous carbon bead Sphere diameter is all the same.Gas passes through splitter, because each component is different in the adsorptivity of splitter in gas, so that different component passes through The Time Inconsistency of splitter, and hydrogen is that adsorptivity is minimum and the smallest component of atomic radius, therefore passes through splitter earliest. The length of gas splitter is 35~100cm in the present embodiment, and diameter is 2~4mm, and the sphere diameter of porous carbon bead is 10~40 Mesh, sphere diameter is bigger, and splitter is longer, and separating effect is better, and the separate time intervals of hydrogen and other gases were improved up to 2 seconds The detection accuracy of sensor.Exhaust gas processing device is a transparent cylinder, column body has cavity, and having in cavity can develop the color Filter medium, filter medium are anhydrous cupric sulfate or discoloration silica gel.Exhaust gas processing device mainly removes hydrogen and sensing element is inhaled Steam after reaction enclosure, filter medium is replaceable, reduces maintenance cost.

As shown in figure 4, governor circuit includes microprocessor unit 21, signal processing unit 22, data storage cell 23, shows Show unit 24, wireless communication unit 25 and provides the power supply unit 26 of operating voltage, signal processing unit, data for governor circuit Storage unit, display unit, wireless communication unit are connected with microprocessor unit respectively, Temperature Humidity Sensor, hydrogen induction member The pin that part is drawn is each passed through shell and is connected with signal processing unit, microprocessor unit and respectively with the first solenoid valve, the Two solenoid valves, third solenoid valve, sampling pump and circulation air pump are connected.Microprocessor unit is the core of governor circuit, is based on Linux stablizes the exploitation of version kernel, embeds fuzzy control operation unit and Easy manual's intelligence learning unit, can be with measurement sample Being increasing to carry out self judgment study for this, monitors input signal and judges instrument state, calculate for current scene Optimization processing scheme, maximum exclusion and correction are given to disturbing factor, to realize the continuous measurement of complete automation, number According to storage analysis and network communication.Data storage cell includes measured database and system monitoring library, measured database according to Earthquake precursor observation industry standard is named data packet, in addition to concentration data, also incidentally temperature, barometric information；System prison Running log and exception information that library saves system intelligent monitoring are surveyed, provides analysis number for the unattended operation maintenance of system According to.Data memory module is stored using the symmetrical backup mode of redundancy, prevents storage chip because using overlong time to be formed Bad block causes historical data to lose, and data can be stored (longest was up to 5 years) with long-time stable, improves the steady in a long-term of system Property.Wireless communication unit realizes telecommunication, convenient for network remote monitoring and remote diagnosis and upgrading, realizes earthquake precursor observation In field unattended observation.Display unit uses touch display screen, realizes human-computer interaction.Microprocessor unit issues control Signal controls each solenoid valve and sampling pump, the movement for recycling air pump.When acquiring gas circuit work, by controlling the unlatching of solenoid valve, The volume of adjustment quantitative pipe determines that the volume of analysis sample, quantitative pipe volume are determined by tomography evolution tolerance, generally 1~ 10mL.When closed circulation detects gas circuit work, circulation air pump provides power, and closure follows bad detection gas circuit and do not need carrier gas, with to Gas is surveyed as background gas.According to the mathematical relationship between the physical property and density of hydrogen of hydrogen sensing element, signal processing Unit uses FPGA and high-precision DA to constitute adjustable reference signal source of the DDS signal generator as sensor.Signal processing list Member not only has analog-digital conversion function, but also acquires the signal of Temperature Humidity Sensor, to the hydrogen sensing element signal of acquisition into Row temperature and humidity non-liner revision.So that the sensitivity of detection hydrogen can reach 10^-9, for detection limit lower than 5ppb, raising detection is accurate The environmental suitability of degree and monitoring system.Microprocessor unit uses adaptive control technology, there is system remote diagnosis to report an error, Remote upgrade, data automatic transmission function are monitored by each module of the serial communication to system, are realized that automation is continuous and are surveyed Amount, data storage analysis and network communication.Power supply unit is using mains-supplied and the power supply of the two-way switchable of storage battery power supply Mode.It charges in the case where there is alternating current to battery and provides power supply for system；Electric power storage is used in the case where mains failure Pond is system power supply, guarantees system power supply.Power supply is automatically cut off when battery voltage drops to set thresholding low pressure, prevents from storing There is over-discharge phenomenon in battery.Power supply unit is conducive to system in the long-term ocean weather station observation in field using supplied by AC/DC electricity mode, is The continuous and steady operation of system provides safeguard, it is ensured that the continuous operating time of system.

The course of work: gas collection pretreatment unit in situ, third solenoid valve, the first solenoid valve, quantity tube, second solenoid valve, Sampling pump and gas outlet constitute acquisition gas circuit；First solenoid valve, hydrogen gas detector, exhaust gas processing device, follows at gas splitter Ring air pump, second solenoid valve and quantity tube constitute closed circulation and detect gas circuit.Acquisition gas circuit work first, tomography emergent gas warp After gas collection pretreatment unit in situ acquisition and pretreatment, under the drive of sampling pump, flow through third solenoid valve, the first solenoid valve, Quantity tube, second solenoid valve and sampling pump are finally flowed out from gas outlet, to determine the volume of sample gas, realize that quantifying for sample gas is adopted Collection；Then detection gas circuit work provides gas circulation power by circulation air pump, it is quantitative after sample gas flow into gas through the first solenoid valve Body splitter, gas splitter isolate the hydrogen in sample gas, and hydrogen flows into hydrogen gas detector, and hydrogen gas detector output is anti- The transducing signal and temperature-humidity signal for reflecting density of hydrogen carry out temperature to the hydrogen sensing element signal of acquisition to signal processing unit Humidity non-liner revision, environmental factor modification method are as follows: the environmental factor under different temperature and humidity conditions is obtained by experiment in advance, so It afterwards will be in the signal processing unit of the particular curve relationship that showed between temperature and humidity and environmental factor write-in governor circuit；In reality When border measures, signal processing unit receives hydrogen transducing signal and temperature and humidity sensing signal, using environmental factor to actually measured Density of hydrogen value be modified, finally obtain and pass through the modified density of hydrogen value of environmental factor, and give microprocessor unit, Display unit is sent to show again.After gas flows through hydrogen gas detector, flow into vent gas treatment resume module, pass through circulation air pump, Second solenoid valve is finally discharged from gas outlet.

Claims (7)

1. a kind of seismological observation escapes trace hydrogen on-line monitoring system with tomography, it is characterised in that pre-processed including gas collection in situ Device, the first solenoid valve, second solenoid valve, sampling pump, quantity tube, gas splitter, hydrogen gas detector, vent gas treatment dress It sets, recycle air pump and governor circuit, the air intake port cover of gas collection pretreatment unit in situ on Observation of fault activity hole, locate in advance by gas collection in situ Reason device, the first solenoid valve, quantity tube, second solenoid valve and sampling pump are sequentially connected, and the efferent duct of sampling pump connects gas outlet； First solenoid valve is connected with gas splitter again, gas splitter, hydrogen gas detector, exhaust gas processing device and circulation air pump according to Secondary to be connected, the efferent duct for recycling air pump is connected with second solenoid valve again；First solenoid valve, second solenoid valve, sampling pump, circulating air Pump and hydrogen gas detector are connected with governor circuit respectively.

2. seismological observation according to claim 1 escapes trace hydrogen on-line monitoring system with tomography, it is characterised in that institute The hydrogen gas detector stated includes hemispherical shell and the hydrogen sensing element in shell, and shell is by planar shaped bottom surface It is tightly connected with the hemisphere mask body covered on bottom surface, the central point of hemisphere mask body is equipped with inlet channel, inlet channel It is connected with the gas splitter, the lower part of hemisphere mask body is equipped with outlet passageway, outlet passageway and the vent gas treatment Device is connected, and the hydrogen sensing element is located on bottom surface, and hydrogen sensing element is more to be coated with using magnetically controlled sputter method Layer nano compound film, including bottom, middle layer and surface layer, bottom are metal copper film layer, and middle layer is hydrogen-sensitive semiconductor oxygen Compound film layer, surface layer are palladium --- transition element alloy firm layer, hydrogen sensing element draw pin, and pin passes through bottom surface It stretches out shell and is connected with the governor circuit.

3. seismological observation according to claim 2 escapes trace hydrogen on-line monitoring system with tomography, it is characterised in that institute Temperature Humidity Sensor is equipped in the shell stated, Temperature Humidity Sensor is mounted on the hemisphere mask body inner wall of shell, temperature and humidity sensing The transducing signal of device output is connected with the governor circuit.

4. seismological observation according to claim 1 escapes trace hydrogen on-line monitoring system with tomography, it is characterised in that institute The gas collection pretreatment unit in situ stated includes gas collecting apparatus and filter device in situ, and gas collecting apparatus in situ is an inverted funnel type Cover, cover cover on Observation of fault activity hole, the top connecting adapter of cover, and adapter passes through pipeline and the filter device It is connected, filter device is connected with first solenoid valve again.

5. seismological observation according to claim 4 escapes trace hydrogen on-line monitoring system with tomography, it is characterised in that institute The filter device stated includes connected dirt catcher and steam-water separator, and dirt catcher is located at the front end of steam-water separator, i.e. dirt catcher One end be connected with the adapter by pipeline, the other end of dirt catcher passes through pipeline and is connected with steam-water separator, carbonated drink Separator is connected with first solenoid valve again.

6. seismological observation according to claim 1 escapes trace hydrogen on-line monitoring system with tomography, it is characterised in that institute The exhaust gas processing device stated is a transparent cylinder, and column body has cavity, there is the filter medium that can be developed the color in cavity, filtering Medium is anhydrous cupric sulfate or discoloration silica gel.

7. seismological observation according to claim 1 or 2 escapes trace hydrogen on-line monitoring system with tomography, it is characterised in that The governor circuit includes microprocessor unit, signal processing unit, data storage cell, display unit, wireless telecommunications list Member and the power supply unit of operating voltage is provided for governor circuit, the transducing signal of the hydrogen gas detector output and described Signal processing unit is connected, and signal processing unit, data storage cell, display unit, wireless communication unit are respectively and micro process Device unit be connected, microprocessor unit respectively with first solenoid valve, second solenoid valve, sampling pump and circulation air pump phase Even.