CN106290245A - For detecting device and the method for detection methane gas of methane gas - Google Patents
For detecting device and the method for detection methane gas of methane gas Download PDFInfo
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- CN106290245A CN106290245A CN201610626292.9A CN201610626292A CN106290245A CN 106290245 A CN106290245 A CN 106290245A CN 201610626292 A CN201610626292 A CN 201610626292A CN 106290245 A CN106290245 A CN 106290245A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 title abstract description 25
- 239000000523 sample Substances 0.000 claims abstract description 55
- 239000013078 crystal Substances 0.000 claims abstract description 6
- 230000003321 amplification Effects 0.000 claims description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000013307 optical fiber Substances 0.000 claims description 4
- 230000008520 organization Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 71
- 230000003287 optical effect Effects 0.000 description 10
- 230000001276 controlling effect Effects 0.000 description 7
- 150000001335 aliphatic alkanes Chemical class 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- -1 steam Substances 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 230000011514 reflex Effects 0.000 description 3
- 241000931526 Acer campestre Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000023077 detection of light stimulus Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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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
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/061—Sources
- G01N2201/06113—Coherent sources; lasers
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- Optics & Photonics (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention relates to a kind of device for detecting methane gas and the method for detection methane gas, wherein for detecting the device of methane gas, including the first pillar being located in region to be measured and the second pillar；First pillar is provided with and includes the optic probe of laser aligner and detector and the controller being connected with optic probe and laser instrument, the laser input of the laser output correspondence laser aligner of laser instrument；Second pillar is provided with the reflecting surface with reflecting angle crystal structure, it is possible to the laser-bounce sent by optic probe is to detector；Controller electrically connects with detector and laser instrument respectively, and controller can control laser instrument and send the laser that wavelength is 1653nm, and calculates the concentration of methane gas between the first pillar and the second pillar according to the laser received by detector.Light path can be increased in limited space, and then improve accuracy of detection, simple in construction, easy to use.
Description
Technical field
The present invention relates to gas detection technology field, be specifically related to a kind of device for detecting methane gas and detection first
The method of alkane gas.
Background technology
In the place such as underground piping, mine, owing to there may be methane, methane is flammable explosive gas, due to detection skill
Art and the backwardness of management level, accident often has generation, economy not only causes huge loss, also result in bad social shadow
Ring, environment is caused pollution.Therefore for guaranteeing safety of life and property, when this type of place operation, need its inside
Gas detects in real time.
In order to guarantee safe production and social stability, detect region to be detected methane gas leakage imperative, existing use
In the various systems detecting region to be detected methane gas health check-up Concentration Testing, detect device compared to by infrared, temperature-sensitive etc.,
Laser detector can have the selectivity of height to gas, it is to avoid it is by other gases in applying working condition, steam, dust etc.
Interference.Traditional laser detecting method is for being placed in both sides by Laser emission end and laser pick-off end, for ensureing that methane gas is dense
The accuracy of degree detection, needs range farther out, i.e. needs distance apart from each other with laser pick-off end for Laser emission end, inconvenience
In measurement.
Summary of the invention
It is desirable to provide a kind of device for detecting methane gas and the method for detection methane gas, can be limited
Space in increase light path, and then improve accuracy of detection, simple in construction, easy to use.
First aspect, for achieving the above object, the present invention provides a kind of device for detecting methane gas, including being located at
The first pillar in region to be measured and the second pillar；Described first pillar is provided with the optics including laser aligner and detector
The controller popped one's head in and be connected with described optic probe and laser instrument, the corresponding described laser of the laser output of described laser instrument
The laser input of collimator；Described second pillar is provided with the reflecting surface with reflecting angle crystal structure, it is possible to by described optics
The laser-bounce that probe sends is to described detector；Described controller electrically connects with described detector and described laser instrument respectively,
And described controller can control described laser instrument and send the laser that wavelength is 1653nm, and according to received by described detector
Laser calculates the concentration of the methane gas between described first pillar and described second pillar.Described first pillar and described second
Distance between pillar is 1m～30m.
The device for detecting methane gas that the present invention provides, is each attached to laser instrument, detector on the first pillar,
Reflecting surface is fixed on the second pillar, and the transmitting terminal of laser and receiving terminal, can be in limited spaces all in the side of reflecting surface
Increasing light path, concrete distance selects according to the difference of field working conditions, meanwhile, according to different mounting distances, to laser
Intensity regulates accordingly, to meet testing requirement.Being reflected, light path is the longest up to 60m, and light path is the biggest, and accuracy of detection is more
High.Simple in construction, easy to use.
Meanwhile, reflecting surface is selected has the reflecting surface of reflecting angle crystal structure, can source is to reflection incident ray effectively, extensively
Angle property is good, reflective apart from farther, can be prevented effectively from the interference of external light source.
It addition, controller controls to send the laser that wavelength is 1653nm, this wavelength at optic probe by controlling electric current
Laser suitable with methane gas, when the laser that wavelength is 1653nm is reflected after face reflexes to optic probe, and controller will
Contrast with the laser intensity being reflected back according to the laser intensity launched, and calculate according to Strength Changes, draw first
Alkane gas concentration, this concentration of methane gas is the concentration of methane gas between the first pillar and the second pillar.The present invention is used for examining
The optical maser wavelength surveying concentration of methane gas is 1653nm, and the wavelength of this laser is suitable with methane gas, can make this equipment pair
Methane gas has the selectivity of height, is not disturbed by other gases, steam, dust etc., compared to using infrared, temperature-sensitive etc.
Gas-detecting device, laser detection can make accuracy of detection higher.
Preferably, described controller includes that signal generating circuit, signal amplification circuit and MCU process circuit, at described MCU
Reason circuit be connected with described signal generating circuit, described signal amplification circuit signal respectively, described signal amplification circuit also with institute
State detector signal to connect.
Preferably, dc chopper and DC source, the input of described dc chopper and described unidirectional current are also included
Source is connected, and its outfan processes circuit with described MCU and is connected.
Preferably, also including being located at the first housing on described first pillar and the second housing, described optic probe is located at
In described first housing, described controller, described laser instrument are all located in described second housing；Described first housing and described
Connect between two housings and have Laser Transmission component.
Preferably, described Laser Transmission component includes optical fiber and the flexible pipe being wrapped in outside described optical fiber.
Preferably, the material of described flexible pipe is metal material.
Preferably, also including connecting assembly, described connection assembly includes: the installation removably connected with described first pillar
Plate；The first support member being vertically located on described installing plate；With described first support member pivot joint and can horizontally rotate second
Support member；Described second support member and described optic probe pivot joint so that described optic probe can be relative to described second
Support member vertically rotates.
Preferably, the axis of described optic probe is perpendicular with the minute surface of described reflecting surface.
Second aspect, the present invention provides a kind of method for detecting concentration of methane gas, and its step includes: choose to be measured
The first pillar in region and the second pillar, the distance between described first pillar and described second pillar is 1m～30m；By root
Set along on described first pillar according to the optic probe of the device described in claim 1 and controller and laser instrument；Will
Described reflecting surface is arranged on described second pillar；Control described laser instrument sending wavelength by described controller is 1653nm's
Laser, described laser is projected on described reflecting surface through described optic probe, and described reflecting surface is by the most described for described laser-bounce
Optic probe, described controlling organization calculates described first pillar and described based on the described laser that described optic probe receives
Concentration of methane gas between two pillars.
In the method detecting methane gas that the present invention provides, the laser that optic probe sends is to have to fit mutually with gas
The wavelength joined is the laser of 1653nm, and compared to using the gas detection methods such as infrared, temperature-sensitive, methane gas is had by this method
The selectivity of height, is not disturbed by other gases, steam, dust etc., accuracy of detection can be made higher.Meanwhile, generating laser
And receptor is in the side of reflecting surface, light path, the distance between the first pillar and the second pillar can be increased in limited space
For 1m～30m, concrete distance selects according to the difference of field working conditions, meanwhile, according to different mounting distances, to laser
Intensity regulates accordingly, to meet testing requirement.Being reflected, light path is the longest up to 60m, in limited space, light path
Increasing, the biggest accuracy of detection of light path is the highest, and simple in construction is easy to use.
Preferably, described first pillar and described second pillar are the rod member established on the ground.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically
In embodiment or description of the prior art, the required accompanying drawing used is briefly described.In all of the figs, similar element
Or part is typically by the reference mark being similar to.In accompanying drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is the structural front view of the device for detecting methane gas of the embodiment of the present invention；
Fig. 2 is the structural side view of the device for detecting methane gas of the embodiment of the present invention；
Fig. 3 is the flow chart of the method for the detection methane gas of the embodiment of the present invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of embodiment is shown in the drawings, the most identical
Or similar label represents same or similar element or has the element of same or like function.Retouch below with reference to accompanying drawing
The embodiment stated is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
Fig. 1 is the structural front view of the device for detecting methane gas of the embodiment of the present invention；Fig. 2 is that the present invention implements
The structural side view of the device for detecting methane gas of example.As shown in Figure 1 and Figure 2, a kind of use is embodiments provided
In the device of detection methane gas, including the first pillar being located in region to be measured and the second pillar；First pillar is provided with bag
Include the optic probe 1 of laser aligner and detector and the controller being connected with optic probe 1 and laser instrument, swashing of laser instrument
The laser input of light output end correspondence laser aligner；Second pillar is provided with the reflecting surface with reflecting angle crystal structure, energy
The enough laser-bounce sent by optic probe 1 is to detector；Controller electrically connects with detector and laser instrument respectively, and controller
Laser instrument can be controlled and send the laser that wavelength is 1653nm, and calculate the first pillar and according to the laser received by detector
The concentration of the methane gas between two pillars.Distance between first pillar and the second pillar is 1m～30m, concrete distance basis
The difference of field working conditions selects, and, according to different mounting distances, regulates the intensity of laser accordingly meanwhile, with
Meet testing requirement.Being reflected, light path is the longest up to 60m, and light path is the biggest, and accuracy of detection is the highest.
The device for detecting methane gas of the embodiment of the present invention, is each attached to the first pillar by laser instrument, detector
On, reflecting surface is fixed on the second pillar, and the transmitting terminal of laser and receiving terminal, can be in limited spaces all in the side of reflecting surface
Interior increase light path, and then improve accuracy of detection, simple in construction, easy to use.
Meanwhile, reflecting surface is selected has the reflecting surface of reflecting angle crystal structure, can source is to reflection incident ray effectively, extensively
Angle property is good, reflective apart from farther, can be prevented effectively from the interference of external light source.
It addition, controller controls to send the laser that wavelength is 1653nm, this wavelength at optic probe 1 by controlling electric current
Laser suitable with methane gas, when the laser that wavelength is 1653nm is reflected after face reflexes to optic probe 1, and controller will
Contrast with the laser intensity being reflected back according to the laser intensity launched, and calculate according to Strength Changes, draw first
Alkane gas concentration, this concentration of methane gas is the concentration of methane gas between the first pillar and the second pillar.The present invention is used for examining
The optical maser wavelength surveying concentration of methane gas is 1653nm, and the wavelength of this laser is suitable with methane gas, can make this equipment pair
Methane gas has the selectivity of height, is not disturbed by other gases, steam, dust etc., compared to using infrared, temperature-sensitive etc.
Gas-detecting device, laser detection can make accuracy of detection higher.
Finally, controller can also be connected with user terminal, is sent extremely with signal form by the concentration of methane gas surveyed
User terminal, concentration of methane gas is checked by convenience, record.
In the present embodiment, controller includes that signal generating circuit, signal amplification circuit and MCU process circuit, MCU process
Circuit is connected with signal generating circuit, signal amplification circuit signal respectively, and signal amplification circuit is also connected with detector signal.
MCU processes circuit and connects signal generating circuit, and signal generating circuit controls laser instrument, and laser instrument sends laser and passes through
Open space is injected in optic probe 1 shaping, and the face that is reflected returns optic probe 1, and the photo-detector in equipment is by the absorption feelings of light
Condition is converted into the signal of telecommunication and sends signal amplification circuit to, and after amplifying, signal enters MCU and processes circuit, analyzes and draws gas
Concentration information.In actual application, the optical signal that detector receives can vary widely along with Changes in weather, and signal amplifies electricity
Road can regulate amplification by controlling digital regulation resistance.In work process, signal amplification circuit compares reception optical signal (spy
Survey device and receive the signal that laser is sent) and the strength relationship of baseline optical signal (signal that laser is sent launched by laser instrument),
If receiving optical signal to be more than baseline optical signal, then reducing digital regulation resistance, reducing signal amplification factor；If receiving optical signal to be less than
Baseline optical signal, then increase digital regulation resistance, improves signal amplification factor, the analog signals of output is locked in one and fixes
Scope, it is ensured that MCU process circuit can effectively work, it is achieved that the round-the-clock continuous monitoring of equipment.
Also include DC/DC (dc chopper) voltage conversion circuit and DC source, the input of DC/DC voltage conversion circuit
End is connected with DC source, and the outfan of DC/DC voltage conversion circuit processes circuit with MCU and is connected, and power supply selects DC source,
DC/DC voltage conversion circuit can be by the voltage stabilization of DC source at 5V voltage, for circuitry.
In the present embodiment, also include the first housing 2 and the second housing 3 being located on the first pillar, optic probe 1 is put
Entering in the first housing 2, the first housing 2 can protect this optic probe 1 not damaged by the external world, and can keep cleaning, same, will
Controller and laser instrument are located in the second housing 3, can effectively protect controller and laser instrument.The laser sent due to laser instrument
Need to send to reflecting surface again after the laser aligner in optic probe 1 collimates, therefore, the first housing 2 and the second housing 3 it
Between be also associated with Laser Transmission component 4, this Laser Transmission component 4 includes the flexible pipe being wrapped in outside light, and flexible pipe is flexible,
Facilitate the setting of the position of controlling organization and optic probe 1, be not limited to distance therebetween.It addition, elect flexible pipe as metal material
Material so that this optical transport component, while having good flexibility, also has preferable corrosion resistance, high temperature resistant, wear-resistant
And tensile property, high life.
For measuring the concentration of the methane gas between the first pillar and the second pillar, need optic probe 1 is arranged on
On one pillar, reflecting surface is installed on the second pillar, and therefore, this device also includes connecting assembly 5, and this connection assembly 5 includes: peace
Dress plate the 51, first support member 52 and the second support member 53.Wherein, installing plate 51 removably connects with the first pillar, it is simple to optics
Probe 1 dismounts on the first pillar, and the first support member 52 can level turn with the second support member 53 pivot joint and the second support member 53
Dynamic, i.e. optic probe 1 horizontal direction can pivot, and can regulate relative to the position of the horizontal direction of reflecting surface, meanwhile, the
Two support members 53 and optic probe 1 pivot joint so that optic probe 1 can be carried out relative to the second support member 53 in the vertical direction
Rotate.I.e. optic probe 1 vertical direction can pivot, and can regulate relative to the position of the vertical direction of reflecting surface.
In the present embodiment, if the axis of optic probe 1 and the minute surface out of plumb of reflecting surface, then in order to make to visit from optics
1 laser launched can return in the laser detector in optic probe 1 after being reflected face reflection, and this optic probe 1 need to set
Being set to bigger structure, relatively costly and be not easy to carrying and control, therefore the axis of the optic probe 1 in the present embodiment is with anti-
The minute surface penetrating face is perpendicular.
Fig. 3 shows the flow chart of the method for the detection methane gas being the embodiment of the present invention, comprises the steps:
Step S1: choose the first pillar in region to be measured and the second pillar, described first pillar and described second pillar
Between distance be 1m～30m；
Step S2: by set along to the optic probe of device according to claim 1 and controller and laser instrument
On one pillar；Reflecting surface is arranged on the second pillar；
Step S3: controlling laser instrument by controller and send the laser that wavelength is 1653nm, laser projects through optic probe
To reflecting surface, reflecting surface is by laser-bounce to optic probe, and the laser that the optically-based probe of controlling organization receives calculates the
Concentration of methane gas between one pillar and the second pillar.
In the method detecting methane gas that the embodiment of the present invention provides, the laser that optic probe sends is to have and first
The laser that wavelength is 1653nm that alkane gas is suitable, compared to using the gas detection methods such as infrared, temperature-sensitive, this method is to first
Alkane gas has the selectivity of height, is not disturbed by other gases, steam, dust etc., accuracy of detection can be made higher.Meanwhile,
Generating laser and receptor, in the side of reflecting surface, can increase light path, the first pillar and the second pillar in limited space
Between distance be 1m～30m, concrete distance selects according to the difference of field working conditions, meanwhile, according to different locating distances
From, the intensity of laser is regulated accordingly, to meet testing requirement.Being reflected, light path is the longest up to 60m, and light path is the biggest,
Accuracy of detection is the highest, simple in construction, easy to use.
Finally, controller can be connected with user terminal, is sent to user with signal form by the concentration of methane gas surveyed
Terminal, concentration of methane gas is checked by convenience, record.
Wherein, the first pillar and the second pillar respectively with fixing optic probe and the device of reflecting surface, by the first pillar with
Second pillar is all set to the rod member established on the ground, simple in construction, and carrying and gets up more convenient.
Owing to laser instrument sends laser to reflecting surface, this laser is reflected face and reflexes to laser detector, say, that should
The light path that laser is walked is the light path between optic probe and reflecting surface, and the intensity gone out according to Laser emission and laser-bounce are returned
The concentration of the comparing calculation methane gas of intensity, the concentration value of this methane gas is the light path between laser detector and reflecting surface
Corresponding concentration of methane gas aggregate-value, therefore, the computing formula of the concentration of methane gas of final output is: concentration of methane gas
Accumulated value=concentration of methane gas value × methane gas thickness, wherein, methane gas thickness be laser detector with reflecting surface it
Between light path.
Apparatus and method of the present invention may be used for detecting methane gas, but for other gas, as long as it is arranged
The wavelength of corresponding laser, also can be suitable for.
In describing the invention, it is to be understood that term " thickness ", " on ", " vertically ", " level ", " interior ", " outward "
Deng instruction orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of description the present invention with
Simplify and describe rather than indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration
And operation, therefore it is not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In describing the invention, " multiple " are meant that two or more, unless separately
There is the most concrete restriction.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing " etc.
Term should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be that machinery connects
Connect, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, in can being two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to concrete feelings
Condition understands above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score permissible
It is that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, revises, replaces and modification.
Claims (10)
1. the device being used for detecting concentration of methane gas, it is characterised in that include the first pillar being located in region to be measured
With the second pillar；
Described first pillar is provided with and includes the optic probe of laser aligner and detector and be connected with described optic probe
Controller and laser instrument, the laser input of the corresponding described laser aligner of the laser output of described laser instrument；
Described second pillar is provided with the reflecting surface with reflecting angle crystal structure, it is possible to the laser sent by described optic probe is anti-
It is incident upon described detector；
Described controller electrically connects with described detector and described laser instrument respectively, and described controller can control described laser instrument
Send the laser that wavelength is 1653nm, and calculate described first pillar and described the according to the laser received by described detector
The concentration of the methane gas between two pillars；
Distance between described first pillar and described second pillar is 1m～30m.
Device the most according to claim 1, it is characterised in that described controller includes that signal generating circuit, signal amplify
Circuit and MCU process circuit, described MCU process circuit respectively with described signal generating circuit, described signal amplification circuit signal
Connecting, described signal amplification circuit is also connected with described detector signal.
Device the most according to claim 2, it is characterised in that also include dc chopper and DC source, described direct current
The input of chopper is connected with described DC source, and its outfan processes circuit with described MCU and is connected.
Device the most according to claim 1, it is characterised in that also include the first housing of being located on described first pillar and
Second housing, described optic probe is located in described first housing, and described second shell is all located at by described controller, described laser instrument
Internal；
Connect between described first housing and described second housing and have Laser Transmission component.
Device the most according to claim 4, it is characterised in that described Laser Transmission component includes optical fiber and is wrapped in described
Flexible pipe outside optical fiber.
Device the most according to claim 5, it is characterised in that the material of described flexible pipe is metal material.
7. according to the device according to any one of claim 1-6, it is characterised in that also include connecting assembly, described connection group
Part includes:
The installing plate removably connected with described first pillar；
The first support member being vertically located on described installing plate；
With described first support member pivot joint and the second support member that can horizontally rotate；
Described second support member and described optic probe pivot joint so that described optic probe can be relative to described second support member
Vertically rotate.
8. according to the device according to any one of claim 3-6, it is characterised in that the axis of described optic probe with described instead
The minute surface penetrating face is perpendicular.
9. the method being used for detecting concentration of methane gas, it is characterised in that its step includes:
Choosing the first pillar in region to be measured and the second pillar, the distance between described first pillar and described second pillar is
1m～30m；
By set along at described first to the optic probe of device according to claim 1 and controller and laser instrument
On post；
Described reflecting surface is arranged on described second pillar；
Controlling described laser instrument by described controller and send the laser that wavelength is 1653nm, described laser is through described optic probe
Being projected on described reflecting surface, described reflecting surface is by described laser-bounce to described optic probe, and described controlling organization is based on institute
State the described laser of optic probe reception to calculate the concentration of methane gas between described first pillar and described second pillar.
Method the most according to claim 9, it is characterised in that described first pillar is with described second pillar and establishes
Rod member on the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610626292.9A CN106290245A (en) | 2016-07-29 | 2016-07-29 | For detecting device and the method for detection methane gas of methane gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610626292.9A CN106290245A (en) | 2016-07-29 | 2016-07-29 | For detecting device and the method for detection methane gas of methane gas |
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| Publication Number | Publication Date |
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| CN106290245A true CN106290245A (en) | 2017-01-04 |
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|---|---|---|---|
| CN201610626292.9A Pending CN106290245A (en) | 2016-07-29 | 2016-07-29 | For detecting device and the method for detection methane gas of methane gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908412A (en) * | 2017-02-16 | 2017-06-30 | 大连艾科科技开发有限公司 | Miniaturization laser methane sensing probe |
| CN109540792A (en) * | 2018-10-08 | 2019-03-29 | 煤科集团沈阳研究院有限公司 | Methane gas extraction pipeline methane concentration detection device |
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| US5173749A (en) * | 1988-07-07 | 1992-12-22 | Altoptronic Ab | Method and apparatus for spectroscopic measurement of the concentration of a gas |
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