CN205209955U - Gas chamber structure, gas detection box and gas detection system - Google Patents
Gas chamber structure, gas detection box and gas detection system Download PDFInfo
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- CN205209955U CN205209955U CN201521000355.7U CN201521000355U CN205209955U CN 205209955 U CN205209955 U CN 205209955U CN 201521000355 U CN201521000355 U CN 201521000355U CN 205209955 U CN205209955 U CN 205209955U
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- air chamber
- laser instrument
- chamber structure
- control system
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Abstract
The utility model discloses an air chamber structure is suitable for and installs in gaseous detection case, include: a pedestal. Set up optical transmitting set end and optics receiving terminal on the base, and set up the sample gas room on the base, be equipped with the blow vent on its lateral wall, the one end that the sample gas room is being close to the optical transmitting set end is equipped with first concave surface speculum, and the other end of keeping away from the optical transmitting set end is equipped with second concave surface speculum. Be equipped with the unthreaded hole on first concave surface speculum, supply optical transmitting set end emit light bundle incident sample gas room and supply the light beam behind first concave surface speculum and second concave surface speculum multiple reflection to return the optics receiving terminal. Wherein, coaxial encapsulation laser instrument and independent temperature control system are drawn together to the optical transmitting set hand ladle. Coaxial encapsulation laser instrument is suitable for to sample gas room emitted light, independent temperature control system is suitable for the temperature of the coaxial encapsulation laser instrument of automatically regulated. The utility model provides a gaseous detection case and gaseous detecting system.
Description
Technical field
The utility model relates to gas analysis arrangement field, particularly relates to a kind of air chamber structure.
Background technology
Tunable diode laser absorption spectroscopy (TDLAS) technology utilizes diode laser wavelength tuning characteristic, obtain the absorption spectrum within the scope of the characteristic absorption spectrum of tested gas, thus qualitative or quantitative test is carried out to dusty gas, this method not only precision is higher, strong and the fast response time of selectivity, has been used to atmospheric trace gas monitoring and Industry Control.In detecting the trace gas in air, the content due to tested gas mostly is ppm (Partpermillion) rank, usually uses multiple reflections sample air chamber to increase absorption light path, to improve the detection sensitivity of laser gas analyzer.
Common multiple reflections sample air chamber is made up of two concave mirrors, the laser beam that optical emitting end sends is by the perforate on proximal concavity catoptron, sample air chamber is injected with specific angle, then get on distal concavity catoptron, and then multiple reflection is carried out in two concave mirrors, and finally penetrated by the tapping of proximal concavity catoptron, thus complete detection.Need in this process to realize accurate control to light path, this just proposes very strict requirement to the machining precision of air chamber physical construction and installation requirement.
In addition, butterfly-type encapsulated laser common in optical emitting end, its packaging cost can be in any more, the very big development limiting photoelectric communication.
For this reason, need to provide one to be convenient to encapsulation, the air chamber structure of fine adjustment can be carried out again light path.
Utility model content
For this reason, the utility model provides a kind of new scheme to try hard to solve or at least alleviate Problems existing above.
According to an aspect of the present utility model, provide a kind of air chamber structure, be suitable for being arranged in gas detect case, this air chamber mechanism comprises pedestal and is arranged at optical emitting end, receive optical end and the sample air chamber on pedestal.
The sidewall of sample air chamber is provided with blow vent, and be provided with the first concave mirror in the one end near optical emitting end, the other end away from optical emitting end is provided with the second concave mirror.Wherein, the first concave mirror is provided with unthreaded hole, sends the incident sample air chamber of light beam and supply the light beam return light receiving end after the first concave mirror and the second concave mirror multiple reflections for optical emitting end.
Optical emitting end comprises coaxial packaging laser instrument and independent temperature control system.Wherein, coaxial packaging laser instrument is suitable for sample air chamber transmitted beam, and independent temperature control system is suitable for the temperature automatically regulating coaxial packaging laser instrument.
Alternatively, according in air chamber structure of the present utility model, temperature sensor, semiconductor cooler and heat radiator that independent temperature control system comprises control circuit and axially connects successively.Wherein, temperature sensor is connected to the side of coaxial packaging laser instrument, is suitable for the temperature measuring described coaxial packaging laser instrument.The side of semiconductor cooler is connected to the opposite side of coaxial packaging laser instrument, is suitable for the refrigeration of described coaxial packaging laser instrument or heating.
Heat radiator is connected to the opposite side of described semiconductor cooler, is suitable for the heat radiation of described semiconductor cooler.Control circuit is suitable for sending refrigeration instruction or heating instructions according to the temperature parameter of described temperature sensor to described semiconductor cooler.
Alternatively, according to air chamber structure of the present utility model, optical emitting end also comprises the adjustable mount pad of the transmitting terminal be fixed on pedestal, is suitable for regulating optical emitting end relative to the position of described unthreaded hole and angle.Receive optical end comprises the adjustable mount pad of the receiving end be fixed on pedestal, is suitable for regulating receive optical end relative to the position of described unthreaded hole and angle.
Alternatively, according to air chamber structure of the present utility model, the control circuit of optical emitting end is suitable for when temperature parameter is higher than sending refrigeration instruction during first threshold, and when temperature parameter sends heating instructions lower than during Second Threshold.
Alternatively, according to air chamber structure of the present utility model, independent temperature control system also comprises the laser instrument pressing plate and laser instrument conducting strip that are suitable for as heat conduction medium.Wherein, laser instrument pressing plate is located between coaxial packaging laser instrument and temperature sensor; Laser instrument conducting strip is located between coaxial packaging laser instrument and semiconductor cooler.
Alternatively, according to air chamber structure of the present utility model, independent temperature control system comprises the fixed part with cavity further, is provided with annular egative film bottom it, heat radiator to be arranged in cavity and with annular egative film close contact.
Alternatively, according to air chamber structure of the present utility model, independent temperature control system further comprises the laser instrument soldered circuit board of hollow, and its side connects semiconductor cooler, and opposite side connects the annular egative film of described fixed part, and radial direction is provided with groove.
Alternatively, according to air chamber structure of the present utility model, independent temperature control system also comprises the temperature sensor soldered circuit board of fixed temperature sensor.
According to another aspect of the present utility model, a kind of gas detect case is provided, comprises according to air chamber structure of the present utility model.
According to another aspect of the present utility model, provide a kind of gas detecting system, comprise according to gas detect case of the present utility model.
According to air chamber structure of the present utility model, adopt low cost coaxial packaging laser instrument at a high speed, and devise independent temperature control system, effectively ensure that the stability of laser works and the accuracy of emission wavelength.Further, by the setting on the adjustable mount pad of receiving end and the adjustable mount pad of transmitting terminal, achieve independent regulation transmitting terminal emission of light and receiving end being received to light, so as to the incidence of light and outgoing more accurate.Further, by regulating device, the second concave mirror is finely tuned, greatly improve the convenience that concave mirror in air chamber structure is regulated.
Accompanying drawing explanation
In order to realize above-mentioned and relevant object; combine description below and accompanying drawing herein to describe some illustrative aspect; these aspects indicate the various modes can putting into practice principle disclosed herein, and all aspects and equivalent aspect thereof are intended to fall in the scope of theme required for protection.Read detailed description below in conjunction with the drawings, above-mentioned and other object of the present disclosure, Characteristics and advantages will become more obvious.Throughout the disclosure, identical Reference numeral is often referred to for identical parts or element.
Fig. 1 shows the schematic diagram of the air chamber structure according to the utility model embodiment;
Fig. 2 shows the schematic diagram of the laser generator 1 according to the utility model embodiment;
Fig. 3 shows and disassembles schematic diagram according to the laser generator 1 of the utility model embodiment;
Fig. 4 shows the schematic diagram of the laser assembly according to the utility model embodiment.
Embodiment
Below with reference to accompanying drawings exemplary embodiment of the present disclosure is described in more detail.Although show exemplary embodiment of the present disclosure in accompanying drawing, however should be appreciated that can realize the disclosure in a variety of manners and not should limit by the embodiment set forth here.On the contrary, provide these embodiments to be in order to more thoroughly the disclosure can be understood, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.
Fig. 1 shows the schematic diagram of the air chamber structure according to the utility model embodiment, comprises optical emitting end, receive optical end, sample air chamber 5 and pedestal 6 according to the air chamber structure be applied in gas detect case (not shown) of the present utility model.
The inside of sample air chamber is provided with concave mirror 5a in the one end near optical emitting end, and the other end away from optical emitting end is provided with concave mirror 5b.Further, concave mirror 5a is provided with unthreaded hole, sends the incident sample air chamber of light beam for optical emitting end and supply the light beam return light receiving end after concave mirror 5a and concave mirror 5b multiple reflections.Be full of the cavity between two concave mirrors for the ease of gas to be detected, sample air chamber can also arrange one or more opening.In addition; the sidewall of sample air chamber is typically provided with blow vent (not shown); and the structure of this sample air chamber can carry out various deformation and adjustment according to specific needs, as prism-shaped profile or cylindrical shape, and these various deformation should belong to protection domain of the present utility model.
Optical emitting end comprises laser generator 1, this laser generator comprises coaxial packaging laser instrument and independent temperature control system, wherein coaxial packaging laser instrument is suitable for sample air chamber transmitted beam, and independent temperature control system is suitable for the temperature automatically regulating coaxial packaging laser instrument.Receive optical end comprises laser pickoff 3, is suitable for receiving sample air chamber and launches the light beam of coming.
According in an embodiment of the present utility model, optical emitting end also comprises the adjustable mount pad 2 of transmitting terminal, is suitable for regulating optical emitting end relative to the position of this unthreaded hole and angle.Further, receive optical end also comprises the adjustable mount pad 4 of receiving end, is suitable for regulating receive optical end relative to the position of this unthreaded hole and angle.Be appreciated that adjustable mount pad can have various ways to be fixed on pedestal, fix as parallel or vertically fix.Parallel fixing time laser generator and laser pickoff be separately fixed at directly over corresponding adjustable mount pad.When vertically fixing, laser generator and laser pickoff fix adjustable mount pad respectively towards in the one side of sample air chamber.Like this, the utility model achieves the angle and the position that precisely regulate utilizing emitted light and receive light, and the light facilitating practical operation regulates, and saves the gasmetry time.
According to another embodiment of the present utility model, the non-reflective minute surface of concave mirror 5b can also arrange axial regulating device 5c, can be arbitrary form, as adjuster bar, adjusting slider etc., corresponding sample air chamber be provided with the adjustment hole passed through for this adjuster bar device.Like this can distance between easy adjustment first concave mirror and the second concave mirror.
According to air chamber mechanism of the present utility model, optical emitting end comprises laser generator 1, Fig. 2 shows the schematic diagram of the laser generator 1 according to the utility model embodiment, and Fig. 3 shows and disassembles schematic diagram according to the laser generator 1 of the utility model embodiment.As shown in Figure 3, laser generator 1 comprises laser assembly and heat radiator 1h.Wherein the concrete structure of laser assembly as shown in Figure 4, mainly comprises control circuit (not shown), and the temperature sensor 1a, the coaxial packaging laser instrument 1c that axially connect successively and semiconductor cooler 1e.Particularly, temperature sensor 1a is connected to the side of coaxial packaging laser instrument, is suitable for the temperature measuring this coaxial packaging laser instrument.The side of semiconductor cooler 1e is connected to the opposite side of coaxial packaging laser instrument, is suitable for the refrigeration of coaxial packaging laser instrument or heating.Control circuit is suitable for sending refrigeration instruction or heating instructions according to the temperature parameter of temperature sensor to semiconductor cooler.In addition, the opposite side of semiconductor cooler connects heat radiator 1h, and this heat radiator is suitable for semiconductor cooler heat radiation.
Composition graphs 3 and Fig. 4, it is emphasized that laser generator of the present utility model adopts coaxial packaging laser instrument, and be provided with independent temperature control system; Wherein, independent temperature control system mainly comprises control circuit, temperature sensor 1a, semiconductor cooler 1e and heat radiator 1h.
According to an embodiment of the present utility model, temperature sensor 1a is suitable for the temperature of monitoring coaxial packaging laser instrument, control circuit is suitable for when temperature parameter sends refrigeration instruction higher than during first threshold to semiconductor cooler, now semiconductor cooler is close to the side refrigeration of coaxial packaging laser instrument, the another side simultaneously contacted with heat radiator generates heat, and the heat conduction that heat radiator is distributed is gone out.And when temperature parameter is lower than Second Threshold, control circuit sends heating instructions to semiconductor cooler, now semiconductor cooler generates heat close to the side of coaxial packaging laser instrument, the another side refrigeration simultaneously contacted with heat radiator.
Further, according to air chamber structure of the present utility model, this independent temperature control system can also comprise the laser instrument pressing plate 1b and laser instrument conducting strip 1d that are suitable for as heat conduction medium.Particularly, laser instrument pressing plate can be located between temperature sensor and coaxial packaging laser instrument; Laser instrument conducting strip can be located between coaxial packaging laser instrument and semiconductor cooler.
According to another embodiment of the present utility model, this independent temperature control system can also comprise the fixed part 1g (as shown in Figure 3) with cavity, is provided with annular egative film bottom it.Further, heat radiator 1h is arranged in cavity, and with annular egative film close contact.Be appreciated that fixed part is mainly as fixing and conductive structure, can carry out the multiple way of contact with heat radiator, as arranged the periphery close contact of heat radiator and fixed part.
According to another embodiment of the present utility model, this independent temperature control system can also comprise the laser instrument soldered circuit board 1f of hollow.Particularly, the side of this laser instrument soldered circuit board is connected to semiconductor cooler 1e, and opposite side is connected to the annular egative film of fixation portions part 1g, and radial direction can arrange groove.
Further, according to air chamber structure of the present utility model, this independent temperature control system can also comprise the temperature sensor soldered circuit board of fixed temperature sensor.This temperature sensor can be various ways, as thermopair, thermistor, resistance temperature detector (RTD) and IC temperature sensor etc.
Be understandable that can there be multiple connected mode according between each device of the present utility model, can be that screw thread is fixed, also can be welded and fixed, and these should be all the protection domains based on invention.
As from the foregoing, adopt coaxial packaging laser instrument according to air chamber structure of the present utility model, and be provided with independent temperature control system, ensure the stable stability of coaxial packaging laser instrument, to provide optical maser wavelength accurately.Also can regulate separately angle and the position of utilizing emitted light and reception light in addition accurately, achieve the application of coaxial packaging laser instrument at multiple reflections sample air chamber.
The utility model also provides a kind of gas detect case comprising above-mentioned air chamber structure, and comprises the gas detecting system of this gas detect case.
In instructions provided herein, describe a large amount of detail.But can understand, embodiment of the present utility model can be put into practice when not having these details.In some instances, be not shown specifically known method, structure and technology, so that not fuzzy understanding of this description.
Similarly, be to be understood that, in order to simplify the disclosure and to help to understand in each inventive aspect one or more, in the description above to exemplary embodiment of the present utility model, each feature of the present utility model is grouped together in single embodiment, figure or the description to it sometimes.But, the method for the disclosure should be construed to the following intention of reflection: namely the utility model required for protection requires than the feature more multiple features clearly recorded in each claim.Or rather, as claims below reflect, all features of disclosed single embodiment before inventive aspect is to be less than.Therefore, the claims following embodiment are incorporated to this embodiment thus clearly, and wherein each claim itself is as independent embodiment of the present utility model.
Those skilled in the art are to be understood that the module of the equipment in example disclosed herein or unit or assembly can be arranged in equipment as depicted in this embodiment, or alternatively can be positioned in one or more equipment different from the equipment in this example.Module in aforementioned exemplary can be combined as a module or can be divided into multiple submodule in addition.
Those skilled in the art are appreciated that and adaptively can change the module in the equipment in embodiment and they are arranged in one or more equipment different from this embodiment.Module in embodiment or unit or assembly can be combined into a module or unit or assembly, and multiple submodule or subelement or sub-component can be put them in addition.Except at least some in such feature and/or process or unit be mutually repel except, any combination can be adopted to combine all processes of all features disclosed in this instructions (comprising adjoint claim, summary and accompanying drawing) and so disclosed any method or equipment or unit.Unless expressly stated otherwise, each feature disclosed in this instructions (comprising adjoint claim, summary and accompanying drawing) can by providing identical, alternative features that is equivalent or similar object replaces.
In addition, those skilled in the art can understand, although embodiments more described herein to comprise in other embodiment some included feature instead of further feature, the combination of the feature of different embodiment means and to be within scope of the present utility model and to form different embodiments.Such as, in the following claims, the one of any of embodiment required for protection can use with arbitrary array mode.
In addition, some in described embodiment are described as at this can by the processor of computer system or the method implemented by other device performing described function or the combination of method element.Therefore, there is the device of processor formation for implementing the method or method element of the necessary instruction for implementing described method or method element.In addition, the element described herein of device embodiment is the example as lower device: this device is for implementing the function performed by the element of the object in order to implement this invention.
As used in this, unless specifically stated so, use ordinal number " first ", " second ", " the 3rd " etc. to describe plain objects and only represent the different instances relating to similar object, and be not intended to imply the object be described like this must have the time upper, spatially, sequence aspect or in any other manner to definite sequence.
Although the embodiment according to limited quantity describes the utility model, benefit from description above, those skilled in the art understand, in the scope of the present utility model described thus, it is contemplated that other embodiment.In addition, it should be noted that the language used in this instructions is mainly in order to object that is readable and instruction is selected, instead of select to explain or limiting theme of the present utility model.Therefore, when not departing from the scope and spirit of appended claims, many modifications and changes are all apparent for those skilled in the art.For scope of the present utility model, be illustrative to disclosing of doing of the utility model, and nonrestrictive, and scope of the present utility model is defined by the appended claims.
Claims (10)
1. an air chamber structure, is suitable for being arranged in gas detect case, it is characterized in that, comprising:
Pedestal;
Be arranged at the optical emitting end on pedestal and receive optical end; And
Be arranged at the sample air chamber on pedestal, its sidewall is provided with blow vent, described sample air chamber is provided with the first concave mirror in the one end near optical emitting end, the other end away from optical emitting end is provided with the second concave mirror, described first concave mirror is provided with unthreaded hole, sends the incident sample air chamber of light beam and supply the light beam return light receiving end after the first concave mirror and the second concave mirror multiple reflections for optical emitting end;
Wherein,
Described optical emitting end comprises coaxial packaging laser instrument and independent temperature control system,
Described coaxial packaging laser instrument is suitable for sample air chamber transmitted beam,
Described independent temperature control system is suitable for the temperature automatically regulating coaxial packaging laser instrument.
2. air chamber structure as claimed in claim 1, is characterized in that, temperature sensor, semiconductor cooler and heat radiator that described independent temperature control system comprises control circuit and axially connects successively,
Wherein,
Described temperature sensor is connected to the side of coaxial packaging laser instrument, is suitable for the temperature measuring described coaxial packaging laser instrument,
The side of described semiconductor cooler is connected to the opposite side of coaxial packaging laser instrument, is suitable for the refrigeration of described coaxial packaging laser instrument or heating,
Described heat radiator is connected to the opposite side of described semiconductor cooler, is suitable for the heat radiation of described semiconductor cooler,
Described control circuit is suitable for sending refrigeration instruction or heating instructions according to the temperature parameter of described temperature sensor to described semiconductor cooler.
3. air chamber structure as claimed in claim 1, it is characterized in that, described optical emitting end also comprises the adjustable mount pad of the transmitting terminal be fixed on pedestal, is suitable for regulating optical emitting end relative to the position of described unthreaded hole and angle; And
Described receive optical end comprises the adjustable mount pad of the receiving end be fixed on pedestal, is suitable for regulating receive optical end relative to the position of described unthreaded hole and angle.
4. air chamber structure as claimed in claim 2, it is characterized in that, the control circuit of described optical emitting end is suitable for when temperature parameter is higher than sending refrigeration instruction during first threshold, and sends heating instructions at temperature parameter lower than during Second Threshold.
5. air chamber structure as claimed in claim 2, is characterized in that, described independent temperature control system also comprises and is suitable for as heat conduction medium:
Laser instrument pressing plate, is located between described coaxial packaging laser instrument and described temperature sensor; And
Laser instrument conducting strip, is located between described coaxial packaging laser instrument and described semiconductor cooler.
6. air chamber structure as claimed in claim 2, it is characterized in that, described independent temperature control system also comprises the fixed part with cavity, and bottom is provided with annular egative film, described heat radiator to be arranged in cavity and with annular egative film close contact.
7. air chamber structure as claimed in claim 6, it is characterized in that, described independent temperature control system also comprises the laser instrument soldered circuit board of hollow, and its side connects semiconductor cooler, opposite side connects the annular egative film of described fixed part, and radial direction is provided with groove.
8. air chamber structure as claimed in claim 2, it is characterized in that, described independent temperature control system also comprises the temperature sensor soldered circuit board of fixed temperature sensor.
9. a gas detect case, is characterized in that, comprises as the air chamber structure in claim 1-8 as described in any one.
10. a gas detecting system, is characterized in that, comprises gas detect case as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521000355.7U CN205209955U (en) | 2015-12-04 | 2015-12-04 | Gas chamber structure, gas detection box and gas detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521000355.7U CN205209955U (en) | 2015-12-04 | 2015-12-04 | Gas chamber structure, gas detection box and gas detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205209955U true CN205209955U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521000355.7U Active CN205209955U (en) | 2015-12-04 | 2015-12-04 | Gas chamber structure, gas detection box and gas detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205209955U (en) |
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- 2015-12-04 CN CN201521000355.7U patent/CN205209955U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190402 Address after: 115000 Liaoning Yingkou Liaoning (Yingkou) coastal industrial base, new Union Street 1 East. Patentee after: Dafang Science and Technology (Yingkou) Co., Ltd. Address before: Room 318, Building 57, 12 South College Road, Haidian District, Beijing, 100875 Patentee before: Beijing Define technology Co., Ltd. |
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| TR01 | Transfer of patent right |