CN110308094A - A kind of long-term continuous detection apparatus of underwater gas-liquid - Google Patents
A kind of long-term continuous detection apparatus of underwater gas-liquid Download PDFInfo
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- CN110308094A CN110308094A CN201910699811.8A CN201910699811A CN110308094A CN 110308094 A CN110308094 A CN 110308094A CN 201910699811 A CN201910699811 A CN 201910699811A CN 110308094 A CN110308094 A CN 110308094A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
Abstract
The present invention provides a kind of long-term continuous detection apparatus of underwater gas-liquid, including pressure-resistant chamber, it is equipped with sample introduction module, balancing device, optics and circuit module in pressure-resistant chamber, goes out egf block and exhaust module, the connection of one end of sample introduction module and balancing device, the other end of balancing device are connect with optics and circuit module with egf block out respectively；Exhaust module includes compression cylinder, piston push rod, gas permeable barrier, exhaust membrane, air guide channel and scraper plate, compression cylinder is equipped with air inlet, air inlet is connect with egf block out, the rotatable propulsion of piston push rod is set in the chamber of compression cylinder, gas permeable barrier and exhaust membrane are set to one end of compression cylinder, air guide channel is connected between the front-end and back-end of compression cylinder, and scraper plate is rotatably set on gas permeable barrier, to strike off to the liquid on gas permeable barrier；The exhaust gas generated to underwater gas detection discharges, and avoids exhaust gas from being piled up in detection device, improves the use continuity of detection device, to realize that underwater gas-liquid detects steadily in the long term.
Description
Technical field
The present invention relates to gas-liquid detection technique field, in particular to a kind of long-term continuous detection apparatus of underwater gas-liquid.
Background technique
Underwater gas-liquid detecting instrument does not may be implemented in the experimental provision of underwater water body known today；When as gas
Although device in use, laboratory has using ring-down spectroscopy principle, methane, the carbon dioxide such as can analyze, and have
Higher precision, but real-time, chronicity, efficiency etc. deficiency, can not use under Quan Haishen environment, also can not
Continuous Long-term analysis in situ is carried out to target area water body, long-play causes measurement result seriously to be drifted about, asks to solve this
Topic, needs constantly to be corrected system；Since equipment is in seabed long-term work, means for correcting in situ is allowed in depth
Correction course is automatically performed in extra large hyperbaric environment, and structure is simple and reliable as far as possible；When as liquid device in use, traditional money
Source exploration device has a single function, and due to the limitation of working principle, can only generally test, can not be carried out simultaneously to single water body
Multiple sensors to multiple reaction systems carry out on-line testing, reaction times are extremely limited, generally only sample introduction and sample cannot be gone out,
The volume of sample introduction is single, generally the volume of quantitative loop, and sampling volume cannot arbitrarily be arranged, and each sample introduction can only be into a kind of sample
Product, cannot simultaneously sample introduction, scientific experiment result is had an impact, sample introduction precision is not high.
In addition, processing method there are mainly three types of the exhaust gas generated in the gas-liquid detection process of deep-sea in the prior art, first
Kind method is be stored in detection device by exhaust gas, and pass through and periodically carry out waste scavenging from recycling detection device in the sea,
This method is not able to satisfy the detection of underwater gas-liquid continuity, low efficiency；Second method is by the way that exhaust gas is dissolved in sample introduction sea
In water, exhaust gas is discharged together by Pressure water discharging, but the gas in exhaust gas is insoluble in water, such as methane a bit, cannot make
Exhaust gas is completely dissolved in sample introduction seawater, easily causes discharge unclean, and the discharge for easily causing exhaust gas to overstock to influence sample introduction seawater is asked
Topic, and exhaust gas is made to be completely dissolved in the higher cost of sample introduction seawater；The third method is to carry out individually compression pressurization to exhaust gas to carry out
Discharge, exhaust gas temperature during compression rise, can liquefy to the cold when contacting gas permeable barrier, to block the gas of gas permeable barrier
Hole, causes to be vented unsmooth, not only influences exhaust efficiency, while also causing to wear to piston push rod.
Summary of the invention
In consideration of it, the present invention proposes a kind of long-term continuous detection apparatus of underwater gas-liquid, it is intended to solve underwater gas-liquid detection dress
It is high to set exhaust gas discharge costs, low efficiency, easily because exhaust gas liquefy blocking gas permeable barrier stomata the problem of.
The technical scheme of the present invention is realized as follows:
The present invention provides a kind of long-term continuous detection apparatus of underwater gas-liquid, including pressure-resistant chamber, be equipped in pressure-resistant chamber into
Egf block, balancing device, optics and circuit module go out egf block and exhaust module, one end of sample introduction module and balancing device
Connection, the other end of balancing device are connect with optics and circuit module with egf block out respectively；Exhaust module includes compression cylinder, work
Push rod, gas permeable barrier, exhaust membrane, air guide channel and scraper plate are filled in, compression cylinder is equipped with air inlet, and air inlet connects with egf block out
It connects, the rotatable propulsion of piston push rod is set in the chamber of compression cylinder, and gas permeable barrier and exhaust membrane are set on one end of compression cylinder, air guide
Channel is connected between the front-end and back-end of compression cylinder, and scraper plate is rotatably set on gas permeable barrier, to the liquid on gas permeable barrier
Body is struck off.
It further, further include rotating electric machine and telescopic cylinder, the output end and piston push rod of rotating electric machine are sequentially connected,
Telescopic cylinder is connected to the end of rotating electric machine；Piston push rod is equipped with connecting rod, and connecting rod is equipped with rectangular preiection, on scraper plate
Equipped with connecting tube, rectangular channel is provided in connecting tube, connecting pipe box are connected in connecting rod, so that rectangular preiection is movable to be located at rectangle
In slot, so that piston push rod rotation be made to drive scraper plate rotation.
It further, further include pressure sensor, pressure sensor is set to the end of compression cylinder, pressure sensor and optics
And circuit module is electrically connected；It further include gland, gland is socketed on exhaust membrane, and gland is connected by the end of bolt and compression cylinder
It connects, is provided with circular hole in the middle part of gland.
Further, catch basin is equipped in compression cylinder, catch basin is located at the lower end of scraper plate；Air guide channel include air inlet and
Blow vent, blow vent are set to the front end of chamber, and gas outlet is set to the rear end of chamber, and gas outlet is equipped with check valve.
Further, sample introduction module includes several experiment chambers, reagent chamber and sea water passage, reagent chamber and sea water passage
It is connect respectively with experiment chamber；Test it is intracavitary be equipped with detector of liquid and gas calibration device, reagent chamber memory is placed with calibrating gas；Into
Egf block further includes the first constant displacement pump, the second constant displacement pump, triple valve and multi-channel peristaltic pump, the input terminal of the first constant displacement pump with
Reagent chamber connection, the output end of the first constant displacement pump and the input terminal of triple valve connect, and the input terminal and seawater of the second constant displacement pump are logical
The output end of road connection, the second constant displacement pump is connect with experiment chamber, and the output end of triple valve is wriggled with experiment chamber and multichannel respectively
Pump connection.
Further, optics and circuit module include control panel, laser, wavelength monitor module, light decay chamber, pressure detecting
Device, insulation detector, Temperature and Humidity device, optical detector and master control borad, laser, wavelength monitor module, the first constant displacement pump,
Second constant displacement pump, triple valve and master control borad are connect with control panel respectively, detector of liquid, gas calibration device, insulation detector,
Pressure detector, Temperature and Humidity device and optical detector are connect with light decay chamber respectively, and light decay chamber is connected to Insulation monitoring
On device, pressure detector and Temperature and Humidity device.
Further, further include multiple sample intake passages, sample intake passage is connected on multi-channel peristaltic pump, balancing device it is defeated
Enter end to connect with sample intake passage, the output end of balancing device is connect with the input terminal of light decay chamber.
Further, egf block includes water pump and boost module out, and water pump is connected to boost module；Boost module includes gas
The output end of body boost module and liquid pressure rise module, light decay chamber is connect with the input terminal of gas boost module, gas boost mould
The output end of block is connect by water pump with air inlet, and the input terminal of liquid pressure rise module is connect with balancing device.
It further, further include optoelectronic composite cable, optoelectronic composite cable is connected on pressure-resistant chamber；It further include sacrificial anode,
The cage connection of sacrificial anode and pressure-resistant chamber.
Further, light decay is intracavitary is equipped with four sides mirror, to carry out the reflection transmitting of light wave；Insulation detector is auxiliary electricity
Source, accessory power supply are electrically connected in the current supply circuit of light decay chamber.
Compared with prior art, the beneficial effects of the present invention are:
By using above-mentioned technical proposal, the low gas-liquid in sea is detected using sample introduction module and optics and circuit module,
The exhaust gas generated in the detection process carries out pressurization discharge, and the company for influencing detection device is piled up in detection device to avoid exhaust gas
Continuous property reduces periodically to the cleaning of exhaust gas, reduces cost of labor；Meanwhile by discharging in real time, gas detection can effectively improve
Efficiency, ensure gas detection during generate exhaust gas discharge in real time；In addition, can avoid in exhaust gas discharge process by scraper plate
The liquid blockage problem of appearance effectively improves exhaust gas discharge efficiency, the abrasion that drop low exhaust gas emission has some setbacks to piston push rod；Together
When, piston push rod can be reduced in fallback procedures the problem of serious wear excessive because of resistance, greatly by the way that air guide channel is arranged
The big service life for improving piston push rod.
Detailed description of the invention
Fig. 1 is a kind of underwater long-term continuous detection apparatus schematic diagram of gas-liquid of the invention；
Fig. 2 is a kind of exhaust module schematic diagram of underwater long-term continuous detection apparatus of gas-liquid of the invention；
Fig. 3 is a kind of exhaust module compressive state schematic diagram of underwater long-term continuous detection apparatus of gas-liquid of the invention；
Fig. 4 is a kind of scraper plate schematic diagram of underwater long-term continuous detection apparatus of gas-liquid of the invention；
Fig. 5 is a kind of sample introduction module schematic diagram of underwater long-term continuous detection apparatus of gas-liquid of the invention；
Fig. 6 is a kind of constant displacement pump of underwater long-term continuous detection apparatus of gas-liquid of the invention into draining and is vented schematic diagram；
Fig. 7 be a kind of underwater long-term continuous detection apparatus of gas-liquid of the invention constant displacement pump into draining outlet precedence diagram.
In figure, 1- compression cylinder；2- piston push rod；3- gas permeable barrier；4- exhaust membrane；5- air guide channel；6- scraper plate；7- air inlet
Mouthful；8- chamber；9- pressure sensor；10- gland；11- catch basin；12- connecting rod；13- connecting tube；14- blow vent；15- goes out
Port；121- rectangular preiection；131- rectangular channel.
Specific embodiment
In order to be best understood from the technology of the present invention content, specific embodiment is provided below, the present invention is described further.
As shown in Figures 1 to 7, the present invention provides a kind of long-term continuous detection apparatus of underwater gas-liquid, including pressure-resistant cavity, resistance to
It presses and is equipped with sample introduction module, balancing device, optics and circuit module in cavity, goes out egf block and exhaust module, wherein sample introduction mould
The connection of one end of block and balancing device, the other end of balancing device are connect with optics and circuit module with egf block out respectively；Row
Gas module includes compression cylinder 1, piston push rod 2, gas permeable barrier 3, exhaust membrane 4, air guide channel 5 and scraper plate 6, and compression cylinder 1 is equipped with
Air inlet 7, air inlet 7 are connect with egf block out, and the rotatable propulsion of piston push rod 2 is set in the chamber 8 of compression cylinder 1, gear of breathing freely
Plate 3 and exhaust membrane 4 are set to one end of compression cylinder 1, and exhaust membrane 4 is located at the outside of gas permeable barrier 3, and with deep contact with sea water, it is ventilative
Baffle 3 can play the role of supporting exhaust membrane 4, and deep sea water pressure is avoided to damage exhaust membrane 4 by pressure；Air guide channel 5 is connected to
Between the front-end and back-end of compression cylinder 1, scraper plate 6 is rotatably set on gas permeable barrier 3, to carry out to the liquid on gas permeable barrier 3
It strikes off；Specifically, can be risen by the exhaust gas temperature of compression, it is lower with temperature during entering chamber 8 of compression cylinder 1
When gas permeable barrier 3 contacts, it may appear that the phenomenon that liquefaction, to block the stomata of gas permeable barrier 3, substantially reduce the row of exhaust module
Gas efficiency, and increase pressure at expulsion, exhaust problem is caused, the normal operation of detection device is influenced；By using above-mentioned technical side
Case detects the low gas-liquid in sea using sample introduction module and optics and circuit module, and the exhaust gas generated in the detection process carries out
Pressurization discharge is piled up in detection device the continuity for influencing detection device to avoid exhaust gas, reduces periodically to the cleaning of exhaust gas,
Cost of labor is reduced, gas detection efficiency is improved；Meanwhile by discharging in real time, it can effectively improve the efficiency of gas detection, protect
The gas generated during barrier gas detection discharges in real time；In addition, can avoid the liquid occurred in exhaust gas discharge process by scraper plate 6
Body blockage problem effectively improves exhaust gas discharge efficiency, the abrasion that drop low exhaust gas emission has some setbacks to piston push rod 2；Meanwhile by setting
It sets air guide channel 5 and can reduce piston push rod 2 and the problem of serious wear, greatly improve work due to resistance is excessive in fallback procedures
Fill in the service life of push rod 2.
It preferably, further include rotating electric machine (not shown) in the present embodiment as shown in Figures 1 to 4 in conjunction with above scheme
With telescopic cylinder (not shown), the output end and piston push rod 2 of rotating electric machine are sequentially connected, and telescopic cylinder is connected to rotating electric machine
End, rotating electric machine and telescopic cylinder are carried out by connection optics and circuit module with controlling piston push rod 2 in chamber 8
Rotation promotes exhaust；Piston push rod 2 is equipped with connecting rod 12, is axially arranged with rectangular preiection 121, scraper plate along bar in connecting rod 12
6 are equipped with connecting tube 13, and the axial direction in connecting tube 13 along pipe is provided with rectangular channel 131, and connecting tube 13 is socketed in connecting rod 12, with
Make rectangular preiection 121 is movable to be located in rectangular channel 131, to make the rotation of piston push rod 2 that scraper plate 6 be driven to rotate；When piston pushes away
When bar 2 rotates propulsion in chamber 8, connecting rod 12 and connecting tube 13 carry out contractile motion, and scraper plate 6 is limited in 3 He of gas permeable barrier
In annular groove between compression cylinder 1, cooperated by rectangular preiection 121 and rectangular channel 131, meeting during piston push rod 2 rotates
Scraper plate 6 is driven to be rotated on the surface of gas permeable barrier 3；Specifically, exhaust gas enters compression cylinder by air inlet 7 after pressurization
18 front end of chamber, rotating electric machine and telescopic cylinder driving 2 rotation forces exhaust gas of piston push rod are compressed, gas in chamber 8
Pressure is continuously increased, meanwhile, the concentration of exhaust gas increases as the volume of exhaust gas is constantly compressed；By be arranged exhaust membrane 4, with
Gas concentration reaches dynamic equilibrium in seawater；As piston push rod 2 continues to pressurize, when in chamber 8 gas concentration be equal to it is critical dense
When spending, exhaust gas can be discharged into seawater from exhaust membrane 4 by dissolving diffusion principle by gas permeable barrier 3；In the process, piston pushes away
The rotation of bar 2, which promotes, rotates scraper plate 6 on gas permeable barrier 3, and by exhaust gas, liquefied liquid is struck off to the cold, to prevent
The blocking of gas permeable barrier 3 is obstructed to influence the discharge of exhaust gas；It should be noted that above-mentioned described critical concentration refers to Fick the
One law and the calculated critical concentration of Arrhenius equation, by The Ideal-Gas Equation it is found that reaching gas
Small 1 to 5 orders of magnitude of pressurization needed for pressure ratio exhaust gas direct emission pressure needed for critical concentration.
It preferably, further include pressure sensor 9, pressure in the present embodiment as shown in Figure 1 to Figure 3 in conjunction with above scheme
Sensor 9 is set to the end of compression cylinder 1, and pressure sensor 9 and optics and circuit module are electrically connected, to pressure in chamber 8 into
Row real-time monitoring；It further include gland 10, gland 10 is socketed on exhaust membrane 4, and gland 10 is connected by the end of bolt and compression cylinder 1
It connects, for reinforcement to be fixed to exhaust membrane 4；Circular hole (not shown) is provided in the middle part of gland 10, circular hole can provide exhaust membrane 4 and sea
Water attaching space enters in deep sea water to facilitate exhaust gas that circular hole is discharged from exhaust membrane 4；Specifically, gas permeable barrier 3 and exhaust
Film 4 and 10 periphery of gland are sealed using sealant, are fixed by strengthening stud in the end of compression cylinder 1；Specifically
Ground, the material of exhaust membrane 4 can be dimethyl silicone polymer, the thickness and area of exhaust membrane 4 depend on the hydrostatic pressure of seawater,
Air inlet film thickness and air inlet membrane area；The film support construction of the device is Haast Roy's niresist thin plate through being sintered,
The material can provide support for exhaust membrane 4, and have salt-resistance, can meet deep-sea long-time service；Due to Haast, Roy is resistance to
Microscopic cavities can be generated in sintering process by losing nickel alloy thin plate, can be provided the channel of exhausting waste gas, be met the gas in compression chamber
Body is freely transmitted to exhaust membrane 4.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, collecting tank 11 is equipped in compression cylinder 1,
Collecting tank 11 is located at the lower end of scraper plate 6, with to the high gas of temperature, liquefied liquid is collected to the cold；Specifically, collecting tank
11 can be by the liquid pressing module for effluent of connecting detection device, to pass through the discharge detection of liquid pressing module
Device；Check valve can be set between collecting tank 11 and liquid pressing module, enter in compression cylinder 1 to avoid return of waste water；
Air guide channel 5 includes blow vent 14 and gas outlet 15, and blow vent 14 is set to the front end of chamber 8, after gas outlet 15 is set to chamber 8
End, gas outlet 15 are equipped with check valve；Specifically, by the way that check valve is arranged, piston push rod 2 can incite somebody to action during setback
The exhaust gas entered from air inlet 7 is squeezed into air guide channel 5 by blow vent 14, under the effect of the pressure, the list of gas outlet 15
It is opened to valve, exhaust gas is out of, gas outlet 15 enters compression cylinder 1 rear end chamber 8, to facilitate the propulsion again of piston push rod 2 to arrange
Gas；When piston push rod 2 rotates forward propulsion, the check valve closure of gas outlet 15, to prevent exhaust gas from flowing back into from gas outlet 15
In the front end chamber 8 of compression cylinder 1, to influence exhaust effect；It by adopting the above technical scheme, can be to avoid piston push rod 2 rear
8 suction of rear end chamber of compression cylinder 1 is excessive during moving back, thus by vapor or gas sucking compression cylinder 1 in seawater
Chamber 8 in, and can effectively avoid piston push rod 2 in fallback procedures, after the exhaust gas in 8 front end of chamber cannot be introduced into chamber 8
The problem of being discharged in end effectively improves the discharge efficiency of exhaust gas and reduces the abrasion of piston push rod 2.
Preferably, in conjunction with above scheme, as shown in Figures 1 to 7, in the present embodiment, sample introduction module includes several experiments
Chamber, reagent chamber and sea water passage, reagent chamber and sea water passage are connect with experiment chamber respectively；It tests intracavitary equipped with detector of liquid
With gas calibration device, reagent chamber memory is placed with calibrating gas, and detector of liquid is intracavitary set on testing, for the detection to liquid point
Analysis；Gas calibration device is intracavitary set on testing, for being corrected to gas；Reagent chamber memory is placed with calibrating gas, to pass through light
It learns and circuit module is corrected detection device, realize to the concentration correction of each gas, avoid tight because of longtime running device
It drifts about again, leads to test data misalignment, effectively improve gas test precision, to realize that underwater gas-liquid detects steadily in the long term；Specifically
Ground can automatically switch to another channel after seawater sample sea water passage is blocked, to realize that long-term original position continuously exists in real time
Line detection gas concentration；When as liquid in-situ experimental provision in use, can sampling volume according to setting, reagent volume,
Can sample introduction simultaneously automatically, port number, channel sample injection time, sampling volume can be set, by be arranged multiple experiment chambers, reagent chamber with
And sea water passage, to improve the service life of device scientific experiment under deep-sea；Sample introduction module further includes the first constant displacement pump, second
The input terminal of constant displacement pump, triple valve and multi-channel peristaltic pump, the first constant displacement pump is connect with reagent chamber, the output of the first constant displacement pump
End is connect with the input terminal of triple valve；The input terminal of second constant displacement pump is connect with sea water passage, the output end of the second constant displacement pump with
Chamber connection is tested, the output end of triple valve is connect with experiment chamber and multi-channel peristaltic pump respectively；Specifically, triple valve is for switching
The on-off of different accesses and control access；Specifically, the first constant displacement pump is used to accurately be passed through calibrating gas to experiment chamber, the
Two constant displacement pumps are used to accurately be passed through seawater sample to experiment chamber；When medium is liquid, multi-channel peristaltic pump is for discharging reaction
Waste liquid afterwards is used for when medium is gas into seawater sample；When this device is used for gas, pass through triple valve standard of closure
Gas passage opens any one sea water passage, and when one of channel blockage, there are also spare five channels, greatly improves
The period that device uses under deep-sea；Specifically, constant displacement pump (including the first constant displacement pump and second constant displacement pump) is needed before use
Constant displacement pump is full of water, determined volume is set, constant displacement pump is equipped with delivery outlet and input port, and constant displacement pump is in actual motion；It is quantitative
When pipe moves to delivery outlet position, piston moves (carry out global motion) down, and the water in quantity tube is drained in realization；Quantity tube
When moving to input port position, piston up moves and (carries out half way movement), realizes and extracts water function；Quantity tube moves to output
Mouth position, piston move (carry out half way movement) down, realize drain function；When quantity tube moves to input port position, piston
Up movement (carrying out global motion), realizes and extracts water function；By the operation of above-mentioned four step with exhaust as far as possible the gas in pipe and
Water；Quantity tube moves to delivery outlet position, and piston moves down, realizes drain function；When quantity tube moves to input port position,
Piston up moves, and realizes and extracts water function；By controlling the precision and constantly draining outlet of motor, to reach a ten thousandth
Precision；Control pump is controlled by two motors, and one is realized in 360 ° of a horizontal direction rotations, so that quantity tube is exporting
Mouth is connected to switching between input port, to realize into the effect for draining and passing in and out gas；Another motor is realized in vertical direction
Movement, i.e. piston up-down；Motor drive ic L293D can be used in control for motor, it is that a doube bridge road is driven
Dynamic chip can drive two-way direct current generator, maximum output current 600mA simultaneously, and it is 1.2A that peak-peak, which exports electric current, and inside is certainly
Band ESD (Electro-Static discharge) is protected, and wherein 1A, 2A, 3A, 4A are connected to the digital I/O port of ARM chip, control
The positive and negative rotation of two-way motor stops, and 1Y, 2Y, 3Y, 4Y are connected to the positive and negative anodes of two motors, and GND is connected to digitally, and VCC is connected to 5V
Power supply；Triple valve and multi-channel peristaltic pump use power supply switch control, are opened using optocoupler its power supply positive negative bipolar
Control is closed, so that circuit and pressure-resistant cavity reduce the influence of leakage current there is no electrical connection to pump valve when power is off；General pump valve
Voltage be 12V or 24V, operating current is 0.1~2A, and pumping source is 24V, operating current 0.5A in this detection device；
Threshold voltage is also 24V, electric current 0.2A；When this device is used for liquid, reagent chamber can fill multiple standards gas, by quantitative
Pump, quantitative volume is arranged in host computer, and volume (such as the volume of quantity tube of sample introduction can arbitrarily be arranged in a certain range
For 2L, then the volume that sample introduction can be set is 0~2L), due to accurately being controlled by electronic module, sample introduction precision up to ten thousand/
One, the sea water passage of the second constant displacement pump can be opened simultaneously, while the triple valve of multiple sea water passages be opened, then multiple experiments
Chamber while sample introduction, then open the first constant displacement pump, the channel volume of multiple calibrating gas are set, while calibrating gas being taken out
Enter to test it is intracavitary, after reacting after a period of time, starting detector analyzed, after to be analyzed, open multichannel
Peristaltic pump, the liquid in multiple reagent chambers are discharged simultaneously；Egf block includes water pump and boost module out, and water pump and boost module connect
It is logical；Boost module includes gas boost module and liquid pressure rise module, the output end of light decay chamber and the input of gas boost module
End connection, the output end of gas boost module are connect by water pump with air inlet 7, pass through exhaust with the exhaust gas generated after will test
Pressure-resistant cavity is discharged in module；The input terminal of liquid pressure rise module is connect with balancing device, by liquid delivery detection device.
Preferably, in conjunction with above scheme, as shown in Figure 1, optics and circuit module include control panel, swash in the present embodiment
Light device, wavelength monitor module, light decay chamber, pressure detector, insulation detector, Temperature and Humidity device, optical detector and master control
Plate, laser, wavelength monitor module, the first constant displacement pump, the second constant displacement pump, triple valve and master control borad connect with control panel respectively
Connect, detector of liquid, gas calibration device, insulation detector, pressure detector, Temperature and Humidity device and optical detector respectively with
The connection of light decay chamber；Wherein, laser selects the JDSU laser of adjustable wavelength, by wavelength monitor module, in different waves
Length is measured, and by fine matching absorption peak, can calculate the concentration of object gas；Light decay chamber is connected to insulation
On detector, pressure detector and Temperature and Humidity device；Light decay is intracavitary to pass through control panel, master control borad, Temperature and Humidity device, pressure
Force detector carries out temperature and humidity, pressure is precisely controlled, to realize that long-time high stability measures；Optical detector is for detecting
The optical power being incident on its face, and the variation of this optical power is converted into corresponding electric current, and electric current is sent into circuit board
Do corresponding processing；Further, light decay it is intracavitary be equipped with four sides mirror, with carry out light wave reflection transmitting, with two sides mirror and
Three mirror contact lens is compared, and four sides mirror is capable of providing higher signal-to-noise ratio；Insulation detector is accessory power supply, and accessory power supply electrically connects
It is connected in the current supply circuit of light decay chamber；Insulation detector be used for detection device insulating properties, due to pressure-resistant cavity, watertight cable with
And connector long-term work is easy to happen aging, leakage, together in complex environments such as high pressure, low temperature, high humility, high salinity
When some components and sealing ring, long-term compressive deformation, sealing effect can degenerate, insulation fault is also easy to produce, by powering back
Accessory power supply is added in road, when the insulating properties decline of lower level reference point, the i.e. arbitrary point of current supply circuit is provided, meeting
A detection electric current is generated by this accessory power supply, control panel processing is sent into, to realize the Insulation monitoring of detection device；Essence
Quasi- control pressure detector, Temperature and Humidity device and insulation detector, realize detection steady in a long-term.
It preferably, further include multiple sample intake passages, sample introduction in the present embodiment as shown in Figure 1 and Figure 5 in conjunction with above scheme
Channel is connected on multi-channel peristaltic pump, and the input terminal of balancing device is connect with sample intake passage, the output end and light of balancing device
Decline chamber input terminal connection；Balancing device makes gas-liquid separation, gas needed for obtaining；It further include pressure-reduction module, pressure-reduction module connects
It is connected to the input terminal of balancing device, the high-pressure gas-liquid two phase flow of extraction is depressured as normal pressure by pressure-reduction module, and is sent into balancing device
It is handled；Specifically, semi-permeable membrane substitution balancing device can also be used to carry out seawater gas-liquid separation, may be implemented long-term continuous
Detection, structure is simple, is easily installed, cheap.
Preferably, in conjunction with above scheme, as shown in Figure 1 and Figure 5, in the present embodiment, calibrating gas includes CH4、H2O、H2S、
NH3、CO2And C2H4Gas, when detection device is used for gas detection, six kinds of calibrating gas are stored in reagent chamber, pass through first
Constant displacement pump can carry out sample introduction simultaneously, open simultaneously triple valve, can be corrected simultaneously to gas by gas calibration device；When
After the completion of correction, triple valve is opened, gas is discharged；The present invention has scalability simultaneously, such as selects ten logical, ten two-way constant displacement pumps
It is even more, to be corrected to more detection gas, or scientific experiment is carried out to the sample of more target areas, with
It realizes and correction in situ is carried out to detection device, avoid data occur because of longtime running device seriously drifting about, cause test data
Deviation is big, causes test data unavailable, thus appearance the problem of reduce the reliability of detection device.
Preferably, in conjunction with above scheme, as shown in Figure 1, further including display module in the present embodiment, display module is touching
Screen or host computer are touched, master control borad is equipped with communication interface, touch screen or host computer and the communication interface of master control borad connects, and realizes multichannel
Touch screen or host computer are detected and be shown in, and control detection device can be carried out by touch screen or host computer, to reach real
When monitor, the intelligent operation of real-time detection.
Preferably, in conjunction with above scheme, as shown in Figure 1, detection device further includes optoelectronic composite cable, light in the present embodiment
Photoelectric compound cable is connected on pressure-resistant cavity, for the intracorporal power supply of pressure-resistant chamber and signal transmission；Further include sacrificial anode, sacrifices
The cage connection of anode and pressure-resistant cavity, to prevent pressure-resistant chamber etching；Utilize the highly reliable master control with network interface of low-power consumption
Hardened light combination photoelectric compound cable is powered and communicates, and realizes to detection device real-time data acquisition in situ and control for a long time, and
And master control borad by collected data by certain calculation processing and verification, by the long-term number in real time in situ of the concentration of various gases
Value shows and saves on touch screen or host computer procedure, to realize real-time monitoring and control.
By adopting the above technical scheme, what the present invention had has the technical effect that
1. the exhaust gas generated during realizing gas detection can discharge, exhaust gas accumulation is avoided to influence the continuous of detection device
Property；
2. realize that sample by fluid removal after experiment, can be realized long-term follow-on test into can go out, rather than
It can only once be tested；
3. realizing sample sample introduction simultaneously, the influence generated by sample injection time difference to scientific experiment is excluded；
4. realize sample can into the sample of arbitrary volume (in the volume of the quantity tube of constant displacement pump, quantity tube can also be more
Change), rather than two phase valves are used, it can only be into the volume of quantity tube；
5. realizing that electronic control method accurately controls motor, and then constant displacement pump is controlled, sample introduction precision reaches a ten thousandth；
6. using calibrating gas, sample introduction, realization are simultaneously corrected the concentration of each gas, improve efficiency simultaneously；
7. realizing that gas, liquid are dual-purpose, can be used in more fields；
8. realizing the ingredient after real-time detection sample is reacted with reaction reagent；
9. replacing filter membrane using balancing device, long-term continuous detection may be implemented, without frequently replacing filter membrane；
10. the channel of seawater sample is up to 6, alternate channel is 5, improves device scientific experiment under deep-sea and uses week
Phase, while also there is scalability；
11. this system has compared with high scalability, by simply replacing component, the experiment of more multichannel can be carried out, or
The more gas concentration detections of person.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of long-term continuous detection apparatus of underwater gas-liquid, it is characterised in that: including pressure-resistant cavity, be equipped in the pressure resistance cavity
Sample introduction module, balancing device, optics and circuit module go out egf block and exhaust module, the sample introduction module and the balance
One end of device connects, and the other end of the balancing device connects with the optics and circuit module and the egf block out respectively
It connects；The exhaust module include compression cylinder (1), piston push rod (2), gas permeable barrier (3), exhaust membrane (4), air guide channel (5) with
And scraper plate (6), the compression cylinder (1) are equipped with air inlet (7), the air inlet (7) connect with the egf block out, the piston
Push rod (2) rotatable propulsion is set in the chamber (8) of the compression cylinder (1), the gas permeable barrier (3) and the exhaust membrane (4)
Set on one end of the compression cylinder (1), the air guide channel (5) is connected between the front-end and back-end of the compression cylinder (1), institute
It states scraper plate (6) to be rotatably set on the gas permeable barrier (3), to strike off the liquid on the gas permeable barrier (3).
2. the long-term continuous detection apparatus of gas-liquid as described in claim 1 underwater, it is characterised in that: further include rotating electric machine and stretch
Contracting cylinder, the output end of the rotating electric machine and the piston push rod (2) are sequentially connected, and the telescopic cylinder is connected to the rotation
The end of rotating motor；The piston push rod (2) is equipped with connecting rod (12), and the connecting rod (12) is equipped with rectangular preiection
(121), the scraper plate (6) is equipped with connecting tube (13), is provided with rectangular channel (131), the connecting tube on the connecting tube (13)
(13) it is socketed on the connecting rod (12), is located in the rectangular channel (131) so that the rectangular preiection (121) is movable,
To make the piston push rod (2) rotation drive scraper plate (6) rotation.
3. the long-term continuous detection apparatus of underwater gas-liquid as claimed in claim 2, it is characterised in that: further include pressure sensor
(9), the pressure sensor (9) is set to the end of the compression cylinder (1), the pressure sensor (9) and the optics and electricity
Road module is electrically connected；It further include gland (10), the gland (10) is socketed on the exhaust membrane (4), the gland (10)
It is connect by bolt with the end of the compression cylinder (1), is provided with circular hole in the middle part of the gland (10).
4. the long-term continuous detection apparatus of underwater gas-liquid as described in claim 1, it is characterised in that: set in the compression cylinder (1)
Have collecting tank (11), the collecting tank (11) is located at the lower end of the scraper plate (6)；The air guide channel (5) includes blow vent
(14) and gas outlet (15), the blow vent (14) are set to the front end of the chamber (8), and the gas outlet (15) is set to the chamber
The rear end of room (8), the gas outlet (15) are equipped with check valve.
5. the long-term continuous detection apparatus of underwater gas-liquid as described in claim 1, it is characterised in that: if the sample introduction module includes
Dry experiment chamber, reagent chamber and sea water passage, the reagent chamber and the sea water passage are connect with the experiment chamber respectively；Institute
It is intracavitary equipped with detector of liquid and gas calibration device to state experiment, the reagent chamber memory is placed with calibrating gas；The sample introduction module
It further include the first constant displacement pump, the second constant displacement pump, triple valve and multi-channel peristaltic pump, the input terminal of first constant displacement pump and institute
Reagent chamber connection is stated, the output end of first constant displacement pump is connect with the input terminal of the triple valve, second constant displacement pump
Input terminal is connect with the sea water passage, and the output end of second constant displacement pump is connect with the experiment chamber, the triple valve
Output end is connect with the experiment chamber and the multi-channel peristaltic pump respectively.
6. the long-term continuous detection apparatus of underwater gas-liquid as claimed in claim 5, it is characterised in that: the optics and circuit module
It is visited including control panel, laser, wavelength monitor module, light decay chamber, pressure detector, insulation detector, Temperature and Humidity device, light
Survey device and master control borad, the laser, wavelength monitor module, the first constant displacement pump, the second constant displacement pump, triple valve and master control borad
It is connect respectively with the control panel, the detector of liquid, gas calibration device, insulation detector, pressure detector, temperature and humidity inspection
It surveys device and optical detector is connect with the light decay chamber respectively, the light decay chamber is connected to the insulation detector, pressure
On detector and Temperature and Humidity device.
7. the long-term continuous detection apparatus of underwater gas-liquid as claimed in claim 6, it is characterised in that: further include that multiple sample introductions are logical
Road, the sample intake passage are connected on the multi-channel peristaltic pump, and the input terminal of the balancing device and the sample intake passage connect
It connects, the output end of the balancing device is connect with the input terminal of the light decay chamber.
8. the long-term continuous detection apparatus of underwater gas-liquid as claimed in claim 6, it is characterised in that: the egf block out includes water
Pump and boost module, the water pump are connected to the boost module；The boost module includes gas boost module and liquid liter
Die block, the output end of the light decay chamber are connect with the input terminal of the gas boost module, the gas boost module it is defeated
Outlet is connect by the water pump with the air inlet (7), and the input terminal and the balancing device of the liquid pressure rise module connect
It connects.
9. the long-term continuous detection apparatus of underwater gas-liquid as described in claim 1, it is characterised in that: it further include optoelectronic composite cable,
The optoelectronic composite cable is connected on the pressure-resistant cavity；It further include sacrificial anode, the sacrificial anode and the pressure-resistant cavity
Cage connection.
10. the long-term continuous detection apparatus of underwater gas-liquid as claimed in claim 6, it is characterised in that: the light decay is intracavitary to be equipped with
Four sides mirror, to carry out the reflection transmitting of light wave；The insulation detector is accessory power supply, and the accessory power supply is electrically connected at
In the current supply circuit of the light decay chamber.
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| CN201910699811.8A CN110308094B (en) | 2019-07-31 | 2019-07-31 | Underwater gas-liquid long-term continuous detection device |
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| CN201910699811.8A CN110308094B (en) | 2019-07-31 | 2019-07-31 | Underwater gas-liquid long-term continuous detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112362613A (en) * | 2020-10-22 | 2021-02-12 | 中国科学院南海海洋研究所 | Low-power-consumption small-volume long-term-duty deep-sea trace gas in-situ measuring instrument |
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| CN201761844U (en) * | 2010-06-03 | 2011-03-16 | 安徽金丰粮油股份有限公司 | Scraping plate for oil tank endoscope |
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| CN204056272U (en) * | 2014-08-07 | 2014-12-31 | 宁波杰达模具机械有限公司 | The unidirectional propelling unit of a kind of boats and ships |
| CN106198872A (en) * | 2016-07-12 | 2016-12-07 | 中国科学院光电研究院 | A kind of deep sea in-situ gas detector exhaust apparatus |
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| CN201761844U (en) * | 2010-06-03 | 2011-03-16 | 安徽金丰粮油股份有限公司 | Scraping plate for oil tank endoscope |
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| CN204056272U (en) * | 2014-08-07 | 2014-12-31 | 宁波杰达模具机械有限公司 | The unidirectional propelling unit of a kind of boats and ships |
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| CN110308094B (en) | 2020-06-09 |
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