CN205426763U - Laser gas analysis appearance and snap ring thereof - Google Patents
Laser gas analysis appearance and snap ring thereof Download PDFInfo
- Publication number
- CN205426763U CN205426763U CN201521038959.0U CN201521038959U CN205426763U CN 205426763 U CN205426763 U CN 205426763U CN 201521038959 U CN201521038959 U CN 201521038959U CN 205426763 U CN205426763 U CN 205426763U
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- China
- Prior art keywords
- snap ring
- laser gas
- lens
- gas analyzer
- step surface
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Abstract
The utility model discloses a snap ring of laser gas analysis appearance, including setting up the launching tube snap ring outside the launching tube and setting up the cleaning tube snap ring outside cleaning tube, the launching tube snap ring with cleaning tube snap ring formula snap ring as an organic whole, just be provided with the annular step face that is used for placing the protection lens on the integral type clamping ring inner wall, the step face is the inclined plane. Use the utility model provides a during the snap ring of laser gas assay appearance, the lens of step face and slope, the combination on two inclined planes can make the light launched through lens composition again through the protection lens time, lens composition with protect the lens interflection, above lens composition can not the re -entering be got back to to the reverberation, and then can not lead to the fact interfering signal. The reduction that ambient signal disturbed has realized more accurate measurement to obtain the less data of error. The utility model also discloses a laser gas analysis appearance of including above -mentioned snap ring.
Description
Technical field
This utility model relates to gas analysis technology field, more particularly, it relates to the snap ring of a kind of laser gas analyzer, further relates to a kind of laser gas analyzer including above-mentioned snap ring.
Background technology
Laser gas analyzer device is an accurate instrument, contains a large amount of advanced laser and electronics technologies.It has employed the key technologies such as single line spectrum technology, laser frequency scanning technique, second-harmonic detection technology, broadening of spectral lines self-correction technology, can realize continuous, on-line measurement gas concentration reliably.Ferrous Metallurgy, the industry such as petrochemical industry are widely used.Its fundamental measurement mode is: the laser sent from the transmitter unit of flue side, is received unit receptor through tested gas and receives.Therefore, the concentration of measured gas can be calculated by the decay of detection laser intensity.By regulating the wavelength of laser semiconductor in actual application, making the absorption line that the inswept tested gas of wavelength is selected, the light intensity that then receptor detects just changes along with the change of optical maser wavelength.
Sensitivity is measured for increasing, use wavelength-modulation technique: when scanning tested gas absorption spectrum line, at one the less AC modulated signals of superposition on signal that drives of semiconductor laser, and second harmonic signal is used to measure the concentration absorbing gas when signal detection.Just because of make use of single line absorption spectroscopy techniques, the absorption of other background gas does not exists, so not from the interference to measurement result of other background gas.But when external environment changes, the such as change of temperature, pressure, the broadening of tested gas molecules sorb spectral line can be caused and highly change, even if every other gas parameter keeps constant, measurement result also can occur bigger error.Semiconductor laser gas analytical tool have employed broadening of spectral lines self-correction technology, by the analysis of second harmonic signal and calculating, it is possible to automatically revises the temperature and pressure change impact on gas concentration measurement, thus ensure that the accuracy of measurement data.
Laser gas analyzer device all uses transmitting tube snap ring and cleaning pipe clamp ring at transmitter unit and receiving unit.Refer to the structural representation that Fig. 1, Fig. 1 are snap ring common in the art.Snap ring is to ensure that the key point of overall tightness, and protecting the reflection of lens is also the part to the interference of instrument overall signal.Existing cleaning pipe clamp ring 01 and transmitting tube snap ring 02 are by together with two plane combinations; but the laser emitted can produce through overprotection lens 03 through lens combination again and be mutually reflected; experiment shows the interference protecting lens 03 to reflex to produce on lens combination minute surface signal, sees, by oscillograph, the signal that the most unnecessary second harmonic interferes.
In sum; how to efficiently solve laser gas analyzer cleaning pipe clamp ring and transmitting tube snap ring causes laser can produce through overprotection lens through lens combination to be mutually reflected again; the problems such as the interference causing signal, are current those skilled in the art's urgent problems.
Utility model content
In view of this; first purpose of the present utility model is to provide the snap ring of a kind of laser gas analyzer; the structure design of the snap ring of this laser gas analyzer can efficiently solve laser and can produce through overprotection lens through lens combination again and be mutually reflected; the interference problem of signal, second purpose of the present utility model is caused to be to provide a kind of laser gas analyzer including above-mentioned snap ring.
In order to reach above-mentioned first purpose, this utility model following technical scheme of offer:
The snap ring of a kind of laser gas analyzer, including the transmitting tube snap ring being arranged at outside transmitting tube and the cleaning pipe clamp ring being arranged at outside cleaning pipe；Described transmitting tube snap ring and described cleaning pipe clamp ring are integral type snap ring, and are provided with the ring-type step surface for placing protection lens on described integral type snap ring inwall, and described step surface is inclined plane.
Preferably, in the snap ring of above-mentioned laser gas analyzer, described step surface is 2.95 degree of-3.05 degree with the angular range of horizontal plane.
Preferably, in the snap ring of above-mentioned laser gas analyzer, described step surface is 3 degree with the angle of horizontal plane.
Preferably, in the snap ring of above-mentioned laser gas analyzer, described step surface is provided with the tack coat for boning with described protection lens.
Preferably, in the snap ring of above-mentioned laser gas analyzer, described step surface offers annular recess, in described annular recess, is provided with sealing ring.
Preferably, in the snap ring of above-mentioned laser gas analyzer, described step surface distance is positioned at the minimum range height equal to described protection lens of the parts above described protection lens.
The snap ring of the laser gas analyzer that this utility model provides includes transmitting tube snap ring and cleaning pipe clamp ring.Wherein, transmitting tube snap ring is arranged at outside transmitting tube, and cleaning pipe clamp ring is arranged at outside cleaning pipe, and transmitting tube snap ring is set to integral structure with cleaning pipe clamp ring, namely the two formula snap ring that is combined into one.The step surface for placing protection lens it is provided with on the inwall of integral type snap ring; namely inwall includes the part being stepped, and step surface in the form of a ring, and is inclined plane; it is inclined plane namely for placing the surface protecting lens, and then protection lens are positioned on step surface the most inclined.
When the snap ring of laser gas analyzer of this utility model offer is provided; it specifically can be arranged at transmitter unit or receiving unit; owing to transmitting tube snap ring and cleaning pipe clamp ring are integrative-structures; and the step surface being used for placing protection lens is inclined plane; thus the combination on two inclined-planes of lens of step surface and inclination can make the light emitted through lens combination again through overprotection lens when; lens combination and protection lens are mutually reflected; reflection light will not again return to above lens combination, and then does not results in interference signal.The minimizing of outer signals interference, it is achieved that measure more accurately, the data less to obtain error.
Meanwhile, the snap ring of the laser gas analyzer that this utility model provides is structure as a whole, and simple in construction is easily installed.
In a preferred embodiment, step surface is provided with tack coat, and then protection lens can bond with step surface.Owing to integral structure directly avoids transmitting tube snap ring and the sealing problem cleaned at pipe clamp ring joint face, thus can mutually paste with quartz glass (protection lens) and snap ring, integrally-built sealing can be ensured.Therefore, above-mentioned snap ring makes integrally-built sealing property become simple, and can reach preferable sealing effectiveness.
In order to reach above-mentioned second purpose, this utility model additionally provides a kind of laser gas analyzer, and this laser gas analyzer includes the snap ring of any of the above-described kind of laser gas analyzer.Owing to the snap ring of above-mentioned laser gas analyzer has above-mentioned technique effect, the laser gas analyzer with this snap ring also should have corresponding technique effect.
Preferably, in above-mentioned laser gas analyzer, described protection lens bond with the step surface of described snap ring.
Preferably, in above-mentioned laser gas analyzer, transmit-receive tube scribbles delustring paint.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of snap ring common in the art；
The structural representation of the snap ring of the laser gas analyzer that Fig. 2 provides for this utility model.
In accompanying drawing, labelling is as follows:
Integral type snap ring 1, protects lens 2.
Detailed description of the invention
This utility model embodiment discloses the snap ring of a kind of laser gas analyzer, is mutually reflected to avoid laser to produce through overprotection lens through lens combination again, causes the interference of signal, simplify installation procedure simultaneously.
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
Refer to the structural representation of the snap ring of the laser gas analyzer that Fig. 2, Fig. 2 provide for this utility model.
In a kind of detailed description of the invention, the snap ring of the laser gas analyzer that this utility model provides includes transmitting tube snap ring and cleaning pipe clamp ring.
Wherein, transmitting tube snap ring is arranged at outside transmitting tube, and cleaning pipe clamp ring is arranged at outside cleaning pipe.The two concrete position and thickness etc. refer to prior art, and here is omitted.Transmitting tube snap ring is set to integral structure with cleaning pipe clamp ring, and namely the two is integral type snap ring 1.It should be noted that integral structure herein refers to through integrated structure, and then there is not joint face between transmitting tube snap ring and cleaning pipe clamp ring, also would not cause leakage in the two junction, it is not necessary to sealing structure is additionally set.For prior art need to arrange at joint face groove placement protection lens 2; owing to using integral structure; need to ensure to protect lens 2 can be positioned in snap ring; therefore setting table terrace; the i.e. inwall of snap ring includes the part being stepped, and step surface in the form of a ring, and is inclined plane; it is inclined plane namely for placing the surface protecting lens 2, and then protection lens 2 are positioned on step surface the most inclined.Structure with specific reference to protection lens 2 upper part can be respectively provided with multiple step surface on snap ring, and it can be combined into, with the step surface being used for placing protection lens 2, the multi-stage stairs that internal diameter is sequentially reduced.It is to be noted; on address the inclination being mentioned below and refer to that step surface and horizontal plane are provided with the angle more than zero degree; the size at its concrete angle of inclination specifically need to be arranged according to the refractive index of protection lens 2 and thickness and the factor such as the refractive index of lens combination and thickness, so that the reflection light of the protection lens 2 after Qing Xieing will not return and produce interference signal through lens combination again.
When the snap ring of laser gas analyzer of this utility model offer is provided; it specifically can be arranged at transmitter unit or receiving unit; owing to transmitting tube snap ring and cleaning pipe clamp ring are integrative-structures; and the step surface being used for placing protection lens 2 is inclined plane; thus the combination on two inclined-planes of lens of step surface and inclination can make the light emitted through lens combination again through overprotection lens 2 when; lens combination and protection lens 2 are mutually reflected; reflection light will not return again to lens combination, and then does not results in interference signal.The minimizing of outer signals interference, it is achieved that measure more accurately, the data less to obtain error.
Concrete, can be 2.95 degree-3.05 with the angular range of setting table terrace Yu horizontal plane according to the refractive index of conventional lens combination and thickness etc. and spend.Certainly, for a certain snap ring, the angle of inclination of its step surface should be a value determined, and this value is in above-mentioned numerical range.Angle of inclination is set in above-mentioned numerical range; concrete can be 3 degree with the angle of setting table terrace Yu horizontal plane; under this heeling condition; the laser launched through lens combination again through overprotection lens 2 time; the direction of reflection light changes, and will not reflex on lens combination again, but reflex on transmit-receive tube; and delustring paint on transmit-receive tube, can be coated with, and then avoid signal disturbing.Certainly, the concrete condition according to lens can suitably adjust the angle of inclination of step surface so that it is to being back to lens combination after laser-bounce.
On the basis of the various embodiments described above, step surface can be provided for and protect the tack coat that lens 2 bond.When namely using, protection lens 2 are bonded on step surface.Owing to integral structure directly avoids transmitting tube snap ring and the sealing problem cleaned at pipe clamp ring joint face, thus can mutually paste with quartz glass (protection lens 2) and snap ring, integrally-built sealing can be ensured.Therefore, above-mentioned snap ring makes integrally-built sealing property become simple, and can reach preferable sealing effectiveness.And use above-mentioned snap ring, when mounted, it is only necessary to directly protection lens 2 are pasted on step surface, install simple, only needed to paste a step by original technology needing two steps be reduced to.
Further, in order to more effectively ensure sealing, annular recess can be offered on step surface, sealing ring is set in annular recess.Annular recess namely for the ease of place sealing ring, annular step surface on offer a circle groove.Jointly being sealed by the bonding of sealing ring join protection lens 2 with step surface, sealing effectiveness is the most reliable.Certainly, arranging the installation process of snap ring when sealing ring makes to use complex, general bondd with step surface by protection lens 2 and can ensure instrument overall tightness by arranging tack coat, its structure is relatively simple.
Further, the minimum range protecting the parts above lens 2 thickness equal to protection lens 2 can be positioned at setting table terrace distance.Namely for place protection lens 2 inclined surface its should be from small to large to being positioned at the distance protecting the parts above lens 2; minimum range is equal to protect the height of lens 2; then lens 2 are protected to be arranged at step surface above-mentioned; the top of its one end is mutually neat with position parts to its upper; and then it is effectively utilized space; avoid the problem causing space hold excessive after being obliquely installed, and neat setting is easy to assembling mutually.It is pointed out that the height of protection lens 2 herein is not necessarily referring to protect the actual (real) thickness of lens 2, and owing to being to tilt and the actual height occupied after referring on its placement and step surface, for protection lens 2 generally higher than its thickness in uniform thickness.
Snap ring based on the laser gas analyzer provided in above-described embodiment; this utility model additionally provides a kind of laser gas analyzer; this laser gas analyzer includes lens combination, protection lens 2 and snap ring; lens combination, the structure of protection lens 2 refer to prior art; here is omitted, and snap ring is any one snap ring in above-described embodiment.The snap ring in above-described embodiment is have employed, so the beneficial effect of this laser gas analysis refer to above-described embodiment due to this laser gas analyzer.
Concrete, protection lens 2 can bond with the step surface of snap ring, and then sealing while simplification structure and installation process is effectively ensured.
In order to avoid reflection light produces interference signal, delustring paint can be set on the transmit-receive tube of laser gas analyzer, and then the light absorption on transmit-receive tube will be reflexed to.It is of course also possible to arrange the angle of inclination of protection lens 2, it is ensured that the light of its reflection is not back to lens combination can significantly reduce interference signal, improves measuring accuracy.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, and between each embodiment, identical similar portion sees mutually.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this utility model.Multiple amendment to these embodiments will be apparent from for those skilled in the art, and generic principles defined herein can realize in the case of without departing from spirit or scope of the present utility model in other embodiments.Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (9)
1. a snap ring for laser gas analyzer, including the transmitting tube snap ring being arranged at outside transmitting tube and the cleaning pipe clamp ring being arranged at outside cleaning pipe；It is characterized in that, described transmitting tube snap ring and described cleaning pipe clamp ring are integral type snap ring, and are provided with the ring-type step surface for placing protection lens on described integral type snap ring inwall, and described step surface is inclined plane.
The snap ring of laser gas analyzer the most according to claim 1, it is characterised in that described step surface is 2.95 degree of-3.05 degree with the angular range of horizontal plane.
The snap ring of laser gas analyzer the most according to claim 2, it is characterised in that described step surface is 3 degree with the angle of horizontal plane.
4. according to the snap ring of the laser gas analyzer described in any one of claim 1-3, it is characterised in that be provided with the tack coat for boning with described protection lens on described step surface.
The snap ring of laser gas analyzer the most according to claim 4, it is characterised in that offer annular recess on described step surface, be provided with sealing ring in described annular recess.
The snap ring of laser gas analyzer the most according to claim 1, it is characterised in that described step surface distance is positioned at the minimum range height equal to described protection lens of the parts above described protection lens.
7. a laser gas analyzer, including lens combination, protection lens and snap ring, it is characterised in that described snap ring is the snap ring as described in any one of claim 1-6.
Laser gas analyzer the most according to claim 7, it is characterised in that described protection lens bond with the step surface of described snap ring.
Laser gas analyzer the most according to claim 7, it is characterised in that scribble delustring paint on transmit-receive tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521038959.0U CN205426763U (en) | 2015-12-11 | 2015-12-11 | Laser gas analysis appearance and snap ring thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521038959.0U CN205426763U (en) | 2015-12-11 | 2015-12-11 | Laser gas analysis appearance and snap ring thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205426763U true CN205426763U (en) | 2016-08-03 |
Family
ID=56516027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521038959.0U Withdrawn - After Issue CN205426763U (en) | 2015-12-11 | 2015-12-11 | Laser gas analysis appearance and snap ring thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205426763U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651697A (en) * | 2015-12-11 | 2016-06-08 | 重庆川仪自动化股份有限公司 | Laser gas analyzer and clasp thereof |
-
2015
- 2015-12-11 CN CN201521038959.0U patent/CN205426763U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651697A (en) * | 2015-12-11 | 2016-06-08 | 重庆川仪自动化股份有限公司 | Laser gas analyzer and clasp thereof |
| CN105651697B (en) * | 2015-12-11 | 2019-01-25 | 重庆川仪自动化股份有限公司 | Laser gas analyzer and its snap ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160803 Effective date of abandoning: 20190125 |