Gasmetry pond and the gas analyzer provided with gasmetry pond
Technical field
The utility model belongs to gas analysis field, more particularly to gasmetry pond and gas analyzer.
Background technology
During be monitored to a variety of smoke components such as sulfur dioxide and nitric oxide simultaneously, usually using gas
Measuring cell detects come the composition to tested gas and concentration.The principle of detection is that the incident light entered by incident module passes through
Cross and reach outgoing module after the reflecting module reflection of the gasmetry pond other end, connect by spectrometer by being emitted module
Receive, the light of subband is fully inhaled by the tested gas for entering gas from air inlet in incident light in this process
Receive, according to spectrometer collection to spectroscopic data tested gas is analyzed.
Reflecting module of the prior art generally also includes speculum mounting seat, speculum mounting seat and gasmetry cell cavity
It is attached between body by screw thread, the light path in gasmetry pond passes through the screw thread that is arranged between speculum mounting seat and cavity
Regulation, when making the work of gasmetry pond, outgoing module and quilt can be reached after being reflected by a reflector from the light of incident module entrance
Spectrometer receives, and yet with inclination angle between screw thread be present, causes part light to be projected from the gap at screw thread inclination angle, without whole
Reach outgoing module and received by spectrometer, so as to influence the accuracy of testing result.
Utility model content
In order to solve the above problems, it is necessary to it is adjustable but do not influence the gas of the accuracy of testing result to provide a kind of light path
Measuring cell and gas analyzer.
In a first aspect, the utility model provides a kind of gasmetry pond,
Including a cavity;
One incident module and an outgoing module are connected to one end of the cavity by the second mounting seat;
One speculum, the speculum are fixedly mounted on the other end of the cavity by the first mounting seat;
The incident module is detachable connection with second mounting seat with the outgoing module so that Ke Yitong
Overregulating the incident module and the outgoing module makes to enter the light of the cavity from the outgoing mould from the incident module
Block projects.
As an alternative embodiment, first mounting seat is carried out with the cavity by screw and screw
Connection.
As an alternative embodiment, ultraviolet aluminium is set on the speculum.
As an alternative embodiment, the incident module includes the first convex lens and the first optical fiber conversion seat, institute
State the first optical fiber conversion seat position it is adjustable so as to allow from the first optical fiber conversion seat enter light be located at first convex lens
The focal point of mirror;The outgoing module includes the second convex lens and the second optical fiber conversion seat, the position of the second optical fiber conversion seat
Put adjustable so as to allowing the light by second convex lens focus to be projected by the second optical fiber conversion seat.
As an alternative embodiment, the first optical fiber conversion seat and the second optical fiber conversion seat and described the
Two mounting seats are attached by screw and set screw so that the first optical fiber conversion seat and the second optical fiber conversion seat
It is adjustable.
As an alternative embodiment, the incident module and the outgoing module are arranged on the reflection
The central axis of mirror is symmetrical.
As an alternative embodiment, the horizontal range of second convex lens and the speculum is to be more than or wait
In the 1/2 of the mirror curvature radius.
As an alternative embodiment, first convex lens and the second convex lens are arranged in the speculum
The both sides of mandrel line, the central axis of first convex lens and the second convex lens are all set to the center with the speculum
Axis direction keeps identical angle.
As an alternative embodiment, first convex lens and the second convex lens are all set to and the reflection
The central axial direction of mirror keeps 1.5 degree of angle.
In summary, gasmetry pond provided by the utility model includes cavity, incident module, is emitted module and reflection mould
Block, by the way that reflecting module and cavity are fixedly connected, realized by adjusting incident module and outgoing module to incident light
Carry out optical path adjusting;Overcome and realize the regulation of light path, reflecting module by the way that reflecting module is adjusted in the prior art
Inclination angle between cavity be present, cause part light to be projected not over outgoing module, the problem of influenceing the accuracy of testing result;
The light that having reached ensures to enter from incident module can be projected by being emitted module, improve the technology effect of the accuracy of testing result
Fruit.
Second aspect, there is provided a kind of gas analyzer, the gas analyzer include light source, optical fiber, spectrometer, processing list
Any gasmetry pond in member and the utility model first aspect and its optional embodiment.
In summary, gas analyzer provided by the utility model includes gasmetry pond, light source, optical fiber and spectrometer;
Overcome and realize the regulation of light path by the way that reflecting module is adjusted in the prior art, exist between reflecting module and cavity
Inclination angle, part light is caused to be projected not over outgoing module, the problem of influenceing the accuracy of testing result;Having reached ensures from entering
Penetrate module entrance light can by be emitted module project, improve the accuracy of testing result and measure simultaneously multiple gases into
Point and concentration technique effect.
It should be appreciated that the general description and following detailed description of the above are only exemplary, this can not be limited
It is open.
Brief description of the drawings
Fig. 1 is the overall installation diagram in the gasmetry pond shown in embodiment 1;
Fig. 2 is the exploded view at the speculum end in the gasmetry pond shown in embodiment 1;
Fig. 3 is the incident module in the gasmetry pond shown in embodiment 1 and the exploded view of outgoing module;
Fig. 4 is the module map of the gas analyzer shown in embodiment 2.
Embodiment
The technical solution of the utility model is described in further detail below by embodiment, and with reference to accompanying drawing.
The incident module 11 of cavity 10 is emitted the first mounting seats of the speculum 13a 13b first of 12 reflecting module of module 13
The screw 11b of sealing device 13c the first screw 10a the second screw 10b the first screw the second mounting seats of 10c 11a the 3rd
The convex lens 111 of 4th 110 second optical fiber conversion seat of screw 11c the second screw the first optical fiber of 11d conversion seats 120 first
The gasmetry of second convex lens, 121 second 14 gas outlet of sealing device 12a set screw 12b air inlets, 15 light source 401
The central processing unit 405 of pond 402 optical fiber, 403 spectrometer 404.
Embodiment one:Referring now to Fig. 1, Fig. 2 and Fig. 3, a kind of gasmetry pond includes cavity 10, and one end of cavity 10 includes
Incident module 11 and outgoing module 12, the other end of cavity 10 includes reflecting module 13, if reflecting module 13 and cavity 10 by
Dry first screw 10c is fixedly connected.
Reflecting module 13 includes being provided with speculum 13a on speculum 13a and the first mounting seat 13b, the first mounting seat 13b
Installation position, for installing speculum 13a.
Cavity 10 is provided with some first screw 10a, the first mounting seat 13b on the end face of one end of reflecting module 13
The second screw 10b, the first screw 10c that some size and shapes of upper correspondence position relative set match passes through first
Screw 10a and the second screw 10b, reflecting module 13 are fixedly connected with cavity 10 by the first screw 10c.First is tight
It is preferably countersunk head screw to determine screw 10c.
There is provided first sealing device 13c between the first mounting seat 13b and speculum 13a to be sealed, to avoid
The light entered from incident module 11 is projected by the first mounting seat 13b, and is projected by being emitted module 12.First sealing device
13c can be that sealing ring can also be sealed in a manner of gluing.
The light entered from incident module 11 is the light with continuous spectrum, such as ultraviolet light, infrared light, in the present embodiment only
It is illustrated using the light entered from incident module 11 as ultraviolet light, on speculum 13a surface, there is provided ultraviolet aluminium film use
To improve speculum 13 to the reflectivity of the ultraviolet light entered from incident module 11.Speculum 13a is preferably concave mirror, in fact
It can also be that level crossing etc. has the optics of light reflection function, only carried out in the present embodiment by concave mirror of speculum 13a
Illustrate.
Incident module 11 and outgoing module 12 are attached by the second mounting seat 11a with cavity 10.By in cavity 10
Relevant position sets some 4th spiral shells on the setting of one end of incident module 11 some 3rd screw 11b, the second mounting seat 11a
Hole 11c, the second mounting seat 11a are connected with cavity 10 by the 3rd screw 11b, the 4th screw 11c and the second screw 11d
Connect.
Incident module 11 is made up of the first optical fiber conversion seat 110 and the first convex lens 111, and outgoing module 12 is by the second optical fiber
The convex lens 121 of conversion seat 120 and second form.The is provided between the two convex lens (111,121) and the second mounting seat 11a
For two sealing device 12a to be sealed, the second sealing device 12a can be that sealing ring can also be carried out by the way of gluing
Sealing.
Incident module 11 and outgoing module 12 are arranged to be symmetrical arranged relative to speculum 13a central axis, with true
The light entered from incident module 11 is protected to project by being emitted module 12.
First convex lens 111 and the second convex lens 121 are arranged on the both sides of speculum 13a central axis, the first convex lens
The central axis of the convex lens 121 of mirror 111 and second and be all set to and speculum 13a central axial direction keep identical
Angle, angular range are spent for 1.35 to 1.65, preferably 1.5 degree of angle.
Horizontal range between two convex lens 111,121 and speculum 13a is L, and speculum 13a radius of curvature is R,
Wherein horizontal range L is set to larger than or the half equal to radius of curvature R.Preferable horizontal range L is set equal to song
Rate radius R half.
Pass through some regulation spiral shells between first optical fiber conversion seat 110 and the second optical fiber conversion seat 120 and the second mounting seat 11a
Silk 12b is attached the focal position to make the first optical fiber conversion seat 110 be in the first convex lens 111 by set screw 12b,
The second optical fiber conversion seat 120 is set to be in the focal position of the second convex lens 121.Set screw 12b is preferably cheese head screw.
Air inlet 14 for introducing tested gas is also provided with the cavity 10 in gasmetry pond and for exporting quilt
Survey the gas outlet 15 of gas.
After tested gas enters from air inlet 14, ultraviolet light enters from the first optical fiber conversion seat 110 of incident module 11,
Speculum 13a is reached after being converged by the first convex lens 111, and the second convex lens 121 are reached after being reflected by speculum 13a,
When ultraviolet light transmits in cavity 10, the tested gas in cavity 10 can be absorbed from the corresponding of the ultraviolet light of incident module 11 entrance
The light of wave band, by the second optical fiber conversion seat after the focusing that the ultraviolet light for being absorbed corresponding wave band passes through the second convex lens 121
120, exported by the second optical fiber conversion seat 120.Analyzed according to from ultraviolet light derived from the second optical fiber conversion seat 120, can
To extrapolate the composition of tested gas and concentration;The gas measured in cavity 10 is exported by gas outlet 15.
In summary, the gasmetry pond that the present embodiment provides includes cavity, incident module, outgoing module and reflection mould
Block, by the way that reflecting module and cavity are fixedly connected, realized by adjusting incident module and outgoing module to incident light
Carry out optical path adjusting;Overcome and realize the regulation of light path, reflecting module by the way that reflecting module is adjusted in the prior art
Inclination angle between cavity be present, cause part light to be projected not over outgoing module, the problem of influenceing the accuracy of testing result;
The light that having reached ensures to enter from incident module can be projected by being emitted module, improve the technology effect of the accuracy of testing result
Fruit.
Embodiment two:Fig. 4 is refer to, it is a kind of gas analyzer, and the gas analyzer includes light source 401 and embodiment
Gasmetry pond 402 in one, in addition to optical fiber 403, spectrometer 404 and processing unit 405.Optionally, gas analyzer is also
Oxygen detector can be included to the oxygen content in detection gas.
Light source 401 can be the light source that can send continuous spectrum, such as ultraviolet source or infrared light supply, in the present embodiment only
It is illustrated by ultraviolet source of light source, sending the light source 401 of ultraviolet source includes tritium gas lamp and xenon lamp.
Optical fiber 403 includes the first optical fiber 403a and second the first optical fiber of optical fiber 403b. 403a one end connection light source 401,
The first optical fiber conversion seat 110 in other end connection gasmetry pond 402.The light that light source 401 is launched passes through the light of optical fiber 403 and first
Fine conversion seat 110 enters in the cavity 10 in gasmetry pond 402, and gasmetry is reached after the convergence of the first convex lens 111
The speculum 13a in pond 402, by speculum 13a the second convex lens 121 reflexed to up to gasmetry pond 402, by second
The focusing of convex lens 121.Second optical fiber 403b one end is connected with the second optical fiber conversion seat 120, the other end and spectrometer 404
It is connected, i.e., spectrometer 404 receives light derived from the outgoing module 12 from gasmetry pond 402, and its composition is detected.
Testing result is conveyed to processing unit 405 by spectrometer 404, is gone out by processing unit 405 according to Analysis result calculation
The composition and concentration of gas.
Certainly, gas analyzer also includes the building blocks such as power supply, display, air pump, and this is no longer going to repeat them.
In summary, the gas analyzer that the present embodiment provides, including gasmetry pond, light source, optical fiber and spectrometer;Gram
Take and realized the regulation of light path by the way that reflecting module is adjusted in the prior art, existed between reflecting module and cavity and incline
Angle, part light is caused to be projected not over outgoing module, the problem of influenceing the accuracy of testing result;Having reached ensures from incidence
The light that module enters can be projected by being emitted module, improved the accuracy of testing result and measured multiple gases composition simultaneously
And the technique effect of concentration.
Specific embodiment described in the utility model is only to the utility model spirit explanation for example.This practicality
New person of ordinary skill in the field can make various modifications or supplement or adopt to described specific embodiment
Substituted with similar mode, but without departing from spirit of the present utility model or surmount model defined in appended claims
Enclose.