CN214150427U - Gas detection module and gas analyzer - Google Patents
Gas detection module and gas analyzer Download PDFInfo
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- CN214150427U CN214150427U CN202120018910.8U CN202120018910U CN214150427U CN 214150427 U CN214150427 U CN 214150427U CN 202120018910 U CN202120018910 U CN 202120018910U CN 214150427 U CN214150427 U CN 214150427U
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Abstract
The utility model provides a gas detection module, include: an optical path adjusting assembly, the optical path adjusting assembly comprising: a light-transmitting member; the first optical path adjusting piece is arranged on one side of the light-transmitting piece, and a first light-transmitting part is arranged at the center of the first optical path adjusting piece; the second optical path adjusting piece is arranged on the other side of the light-transmitting piece relative to the first optical path adjusting piece, and a second light-transmitting part is arranged in the center of the second optical path adjusting piece; the light source component is arranged on one side of the light-transmitting piece and comprises a light source; the connecting piece is connected with the light-transmitting piece; the light-emitting point of the diffusible light source, the center of the first light-passing part and the center of the second light-passing part are positioned on the same horizontal straight line. The utility model discloses need not optic fibre, can realize the transmission of light, improved gas detection module's durability, logical light and printing opacity, and reduced gas detection module's volume and volume, portable detects.
Description
Technical Field
The utility model relates to a gaseous detection technology field, in particular to gaseous detection module and gas analysis appearance.
Background
The ultraviolet absorption spectrum technology applied to gas analysis has the advantages of low detection limit, no interference of water vapor and simultaneous detection of various gases, and is widely applied to gas detection in industrial processes and gas detection of pollution source emission. Particularly, in the detection of ultra-low concentration smoke emission, the method can simultaneously detect low-concentration nitrogen oxides and sulfur dioxide in the waste gas, and the performance of the method is superior to that of the traditional electrochemical sensor and infrared gas sensor. The ultraviolet spectrum gas detection module is a core component of the ultraviolet spectrum gas analyzer and determines the detection index and the volume weight of the gas analyzer.
At present, in the ultraviolet spectrum gas detection module in the prior art, a light source, an optical path adjusting component and an ultraviolet spectrometer are connected through optical fibers, and light is transmitted to the ultraviolet spectrometer through the optical fibers.
However, the use of optical fibers to transmit light to uv spectrometers has the following disadvantages:
(1) the optical fiber is made of quartz material, is fragile, is easy to break off in the using process and needs special protection, so that the durability is reduced;
(2) the optical fiber has larger bending radius, occupies larger space and is not beneficial to the miniaturization of the module;
(3) the light transmission capacity of the optical fiber to ultraviolet light is limited, the signal-to-noise ratio of the module can be influenced, and the deep ultraviolet light transmission capacity of the optical fiber can be reduced under the long-term irradiation of the ultraviolet light, so that the gas detection of a deep ultraviolet spectrum section is influenced.
SUMMERY OF THE UTILITY MODEL
For solving among the prior art gaseous detection module bulky, the durability is low and lead to the limited technical problem of light and printing opacity, the utility model provides a gaseous detection module need not optic fibre, can realize the transmission of light, has improved gaseous detection module's durability, leads to light and printing opacity, and has reduced gaseous detection module's volume and volume, portable detects.
The utility model provides a gas detection module, include:
an optical path adjustment assembly, the optical path adjustment assembly comprising:
a light-transmitting member;
the first optical path adjusting piece is arranged on one side of the light-transmitting piece, and a first light-transmitting part is arranged at the center of the first optical path adjusting piece;
a second optical path adjusting member disposed at the other side of the light-transmitting member with respect to the first optical path adjusting member, the second optical path adjusting member having a second light-transmitting portion disposed at a center thereof;
the light source assembly is arranged on one side of the light-transmitting piece and comprises a light-transmitting piece and a light-emitting unit;
the connecting piece is connected with the light-transmitting piece;
the light-emitting point of the diffusible light source, the center of the first light-passing part and the center of the second light-passing part are positioned on the same horizontal straight line.
The above gas detection module, wherein the gas detection module further comprises:
the ultraviolet spectrometer is arranged on the other side of the optical path adjusting assembly and connected with the light-passing piece, and the center of a slit of the ultraviolet spectrometer and the center of the second light-passing part are positioned on the same horizontal straight line.
In the above gas detection module, the first optical path adjusting member and the second optical path adjusting member are both concave mirrors.
The above gas detection module, wherein the optical path adjusting assembly further comprises:
a first heating member disposed outside the light-transmitting member;
the first temperature detection piece is arranged on the outer side of the light-transmitting piece.
In the above gas detection module, a second heating element and a second temperature detection element are disposed on the outer side of the ultraviolet spectrometer.
The above gas detection module, wherein the optical path adjusting assembly further comprises:
the air inlet hole is arranged on the outer side of the light-transmitting piece;
the exhaust hole, the exhaust hole set up in the outside of leading to the light piece, the outside of leading to the light piece still is provided with pressure detection spare, pressure detection spare with the exhaust hole is connected.
The above gas detection module, wherein the gas detection module further comprises:
the signal processing board is arranged on the outer side of the light-transmitting piece and is electrically connected with the diffusible light source, the ultraviolet spectrometer and the pressure detection piece.
The above gas detection module, wherein the gas detection module further comprises:
the temperature control board, the temperature control board with the signal processing board set up side by side in the outside of light-passing piece, just the temperature control board with the signal processing board first temperature detects the piece the second temperature detects the piece first heating member reaches second heating member electric connection.
The above gas detection module, wherein the gas detection module further comprises:
and the protecting piece is wrapped on the outer sides of the optical path adjusting assembly and the ultraviolet spectrometer.
The present embodiment also provides a gas analyzer including the gas detection module as described above.
The utility model discloses a technological effect or advantage:
(1) the utility model provides a gas detection module, including optical path adjusting part and the light source subassembly that is connected, optical path adjusting part includes logical light spare, and set up respectively in the first optical path adjusting part and the second optical path adjusting part that lead to light spare both sides, the center of first optical path adjusting part is provided with first portion of leading to light, the center of second optical path adjusting part is provided with second portion of leading to light, the light source subassembly includes connecting piece and diffusible light source, the connecting piece is connected with logical light spare, still be connected with diffusible light source, the center of first portion of leading to light and the center of second portion of leading to light are in on same horizontal straight line. Through the mode, optical fiber is not needed, light transmission can be achieved, the durability, the light passing capacity and the light transmitting capacity of the gas detection module are improved, the size and the volume of the gas detection module are reduced, and the gas detection module is convenient to carry and detect.
(2) The utility model provides a gaseous detection module still includes the ultraviolet spectrum appearance, and the ultraviolet spectrum appearance sets up in the opposite side of optical path adjusting part, and it is connected with logical light spare, and the slit center of ultraviolet spectrum appearance is in on the same horizontal straight line with the center of second light through part. Through the mode, optical fiber transmission is not needed between the ultraviolet spectrometer and the optical path adjusting assembly, emergent light of the optical path adjusting assembly is directly transmitted to the slit of the ultraviolet spectrometer, the stability of the gas detection module is improved, and the gas detection module can be applied to complex working conditions.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
Fig. 1 is a schematic structural diagram of a gas detection module according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a gas detection module according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an optical path adjusting assembly according to an embodiment of the present invention;
description of the drawings: 1. a light source assembly; 11. a diffusible light source; 12. a connecting member; 2. an optical path adjusting assembly; 21. a first optical path adjusting member; 211. a first light-passing portion; 22. a second optical path adjusting member; 221. a second light passing portion; 23. a light-transmitting member; 24. a first heating member; 25. a signal processing board; 26. a temperature control plate; 27. a pressure detecting member; 3. an ultraviolet spectrometer; 31. a second heating member.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and the detailed description. Although embodiments of the present invention have been disclosed in the accompanying drawings, it should be understood that the invention can be embodied in any form and should not be limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "inside", "outside", "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The terms "first," "second," and the like, are used herein to describe various elements, components, regions, layers and/or sections, but are used only to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Terms such as "first," "second," and the like, as well as other numerical terms, are not used herein to imply a sequence or order unless clearly indicated by the context.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
For solving among the prior art gaseous detection module bulky, the durability is low and lead to light and the limited technical problem of printing opacity, the utility model provides a gaseous detection module need not optic fibre, can realize leading into ultraviolet spectroscopy with the light, has improved gaseous detection module's durability, leads to light and printing opacity, and has reduced gaseous detection module's volume and volume, portable detects.
The technical solution of the present invention will be described in detail below with reference to the following specific embodiments and accompanying drawings.
The embodiment relates to a gas detection module, including:
an optical path adjusting assembly 2, the optical path adjusting assembly 2 comprising:
a light-transmitting member 23;
a first optical path adjusting member 21, wherein the first optical path adjusting member 21 is disposed at one side of the light-transmitting member 23, and a first light-transmitting portion 211 is disposed at the center of the first optical path adjusting member 21;
a second optical path adjusting member 22, wherein the second optical path adjusting member 22 is disposed on the other side of the light-transmitting member 23 with respect to the first optical path adjusting member 21, and a second light-transmitting portion 221 is disposed at the center of the second optical path adjusting member 22;
the light source assembly 1, the light source assembly 1 is arranged at one side of the light-transmitting piece 23, and the light source assembly 1 comprises;
the connecting piece 12 is connected with the light-transmitting piece 23;
and a diffusible light source 11, wherein the diffusible light source 11 is connected to the connector 12, and a light emitting point of the diffusible light source 11, a center of the first light-passing part 211 and a center of the second light-passing part 221 are on the same horizontal straight line.
The gas detection module that this embodiment provided need not optic fibre, can realize the transmission of light, has improved gas detection module's durability, logical light and printing opacity ability, and has reduced gas detection module's volume and volume, portable detects.
Specifically, referring to fig. 1, the gas detection module provided in this embodiment includes: light source subassembly 1, optical distance adjusting part 2 and ultraviolet spectrometer 3, wherein, light source subassembly 1 is connected with one side of optical distance adjusting part 2, and ultraviolet spectrometer 3 is connected with the opposite side of optical distance adjusting part 2.
The light source assembly 1 serves to emit light. Specifically, referring to fig. 1, the light source assembly 1 is disposed on one side of the optical path adjusting assembly 2 and connected to one side of the optical path adjusting assembly 2, the light source assembly 1 includes a diffusible light source 11 and a connecting member 12, wherein one side of the connecting member 12 is connected to the optical path adjusting assembly 2, the other side of the connecting member 12 is connected to the diffusible light source 11, the connecting member 12 can be fixedly connected to the diffusible light source 11 through a bolt and a nut, in this embodiment, the connecting member 12 is a thin sheet, the diffusible light source 11 is a pulse xenon lamp, the pulse xenon lamp is a cold light source, and can emit light instantly without preheating, and is high in light emitting efficiency and convenient to carry. The light source assembly 1 and the optical path adjusting assembly 2 of this embodiment are directly connected, and optical transmission can be realized without optical fibers, so that the durability, light transmission and light transmission capability are improved.
The optical path adjusting assembly 2 is used to adjust optical transmission. Specifically, referring to fig. 1 to 3, the optical path adjusting assembly 2 includes a first optical path adjusting member 21, a second optical path adjusting member 22, a light passing member 23, a first heating member 24, a first temperature detecting member (not shown), a signal processing board 25, a temperature control board 26, a pressure detecting member 27, an air inlet hole (not shown), and an air outlet hole (not shown). The light-transmitting member 23 is connected to the light source assembly 1, specifically, the light-transmitting member 23 is connected to one side of the connecting member 12, and the connecting member 12 can be fixedly connected to the light-transmitting member 23 through a bolt and a nut, in this embodiment, the light-transmitting member 23 is a lens barrel, and is barrel-shaped, and the inside of the lens barrel is a cavity. The first optical path adjusting member 21 is disposed on one side of the light-transmitting member 23 and connected to the light-transmitting member 23, the first light-transmitting portion 211 is disposed in the center of the first optical path adjusting member 21, wherein the first light-transmitting portion 211 is in a hole shape, the second optical path adjusting member 22 is disposed on the other side of the light-transmitting member 23 and connected to the light-transmitting member 23, the second light-transmitting portion 221 is disposed in the center of the second optical path adjusting member 22, wherein the second light-transmitting portion 221 is in a hole shape, and the size and shape of the second light-transmitting portion 221 are the same as those of the first light-transmitting portion 211. In the present embodiment, the light emitting point of the diffusible light source 11, the center of the first light passing part 211 and the center of the second light passing part 221 are on the same horizontal straight line, so that the light emitted from the diffusible light source 11 enters along the center of the first light passing part 211, the light entering in the light passing member 23 is reflected by the first optical path adjusting member 21 and the second optical path adjusting member 22 for multiple times and exits along the center of the second light passing part 221, and the long optical path is realized by multiple reflections in the light passing member 23. In this embodiment, the first optical path adjusting member 21 and the second optical path adjusting member 22 are both concave mirrors, and the number of times of emission and the single reflection optical path of the incident light in the light transmitting member 23 can be changed by changing the curvature radii of the first optical path adjusting member 21 and the second optical path adjusting member 22 and the distance between the first optical path adjusting member 21 and the second optical path adjusting member 22 in the light transmitting member 23, thereby realizing a long optical path design.
In the present embodiment, the first heating member 24 is disposed outside the light-transmitting member 23, and a first temperature detecting member is also disposed outside the light-transmitting member 23, the first temperature detecting member is used for measuring the temperature value of the light-transmitting member 23 in real time, and specifically, the first temperature detecting member is a temperature sensor. The air inlet hole (not shown in the figure) is arranged on the outer side of the light-transmitting member 23 and used for allowing sampling gas to enter, the exhaust hole (not shown in the figure) is also arranged on the outer side of the light-transmitting member 23, the pressure detecting member 27 is further arranged on the outer side of the light-transmitting member 23, the pressure detecting member 27 is connected with the exhaust hole, the pressure detecting member 27 is used for acquiring the value of the gas pressure in the light-transmitting member 23 in real time, and specifically, the pressure detecting member 27 is a pressure sensor. The signal processing board 25 is disposed at the outer side of the light-transmitting member 23, and the signal processing board 25 is electrically connected to the diffusible light source 11, the temperature control board 26, the ultraviolet spectrometer 3 and the pressure detecting member 27, specifically, the signal processing board 25 is responsible for completing the synchronous control of the diffusible light source 11 and the ultraviolet spectrometer 3, the collection and processing of ultraviolet spectrometer data, the external communication, the pressure acquisition, the temperature acquisition, the pressure and temperature state conversion and the module abnormal state feedback to the measurement result, the signal processing board 25 also completes the synchronous control of the diffusible light source 11 and the ultraviolet spectrometer 3 through a plurality of timers, and through hardware synchronization, the synchronization accuracy is guaranteed, and meanwhile, the load of the processor is reduced. Temperature control plate 26 sets up side by side in the outside of light-passing member 23 with signal processing board 25, and temperature control plate 26 and signal processing board 25, first heating member 24 and first temperature detect a piece electric connection, and temperature control plate 26 is responsible for detecting a measuring temperature value according to first temperature, adjusts first heating member 24's output, realizes the temperature control to light-passing member 23, keeps it to work under the temperature environment of settlement all the time for measuring result is more accurate.
The ultraviolet spectrometer 3 is used for detecting the sampling gas. Referring to fig. 1 and 2, specifically, the ultraviolet spectrometer 3 is disposed on the other side of the optical path adjusting assembly 2, the optical path adjusting assembly 2 is connected to the ultraviolet spectrometer 3, more specifically, the light-passing member 23 is connected to the ultraviolet spectrometer 3, specifically, the light-passing member 23 may be fixedly connected to the ultraviolet spectrometer 3 by a bolt and a nut, a center of a slit of the ultraviolet spectrometer 3 and a center of the second light-passing portion 221 are located on the same horizontal straight line, and more specifically, a center of a slit of the ultraviolet spectrometer 3 and a center of the second light-passing portion 221, a center of the first light-passing portion 211 and a center of the diffusible light source 11 are located on the same horizontal straight line. In this implementation, optical fiber transmission is not required between the ultraviolet spectrometer 3 and the optical path adjusting assembly 2, and emergent light of the optical path adjusting assembly 2 is directly transmitted to the slit of the ultraviolet spectrometer 3, so that the stability of the gas detection module is improved, and the gas detection module can be applied to complex working conditions. The outer side of the ultraviolet spectrometer 3 is provided with a second heating element 31 and a second temperature detection element (not shown in the figure), the second temperature detection element is used for measuring the temperature value of the ultraviolet spectrometer 3 in real time, and specifically, the second temperature detection element is a temperature sensor. The temperature control plate 26 is electrically connected with the second heating member 31 and the second temperature detection member, and is responsible for adjusting the output power of the second heating member 31 according to the temperature value measured by the second temperature detection member, so that the temperature control of the ultraviolet spectrometer 3 is realized, and the ultraviolet spectrometer is kept to work in a set temperature environment all the time, so that the measurement result is more accurate. In this embodiment, the ultraviolet spectrometer 3 selects the aberration correction concave holographic grating as the light splitting element, adopts the ultraviolet enhancement linear array CCD as the photoelectric sensor, and has only one optical element, so that the ultraviolet spectrometer 3 has the advantages of small stray light and high light energy utilization rate.
In this embodiment, in order to protect the optical path adjusting assembly 2 and the ultraviolet spectrometer 3, a protecting member (not shown) is further provided, and the protecting member covers the optical path adjusting assembly and the ultraviolet spectrometer, wherein the protecting member is a protecting cover.
The gas detection module that this embodiment provided need not optic fibre between light source subassembly 1 and the optical path adjusting part 2, can realize the transmission of light, has improved gas detection module's durability, logical light and light-transmitting capacity, and has reduced gas detection module's volume and volume, portable detects. Optical fiber transmission is not needed between the ultraviolet spectrometer 3 and the optical path adjusting component 2, emergent light of the optical path adjusting component 2 is directly transmitted to the slit of the ultraviolet spectrometer 3, the stability of the gas detection module is improved, and the gas detection module can be applied to complex working conditions.
The working flow of the gas detection module provided by the embodiment is as follows: the signal processing board 25 completes synchronous control of the diffusible light source 11 and the ultraviolet spectrometer 3 through a plurality of timers, the diffusible light source 11 emits a light beam, the emitted light beam is incident from the first light passing part 211, the incident light is reflected for a plurality of times in the light passing part 23 through the first optical path adjusting part 21 and the second optical path adjusting part 22 and is emitted from the second light passing part 221, the emergent light enters the ultraviolet spectrometer 3 through a slit of the ultraviolet spectrometer 3, and the ultraviolet spectrometer 3 detects the sampling gas according to the entered light. In the process of optical transmission, the first temperature detection part measures the temperature value of the light-transmitting part 23 in real time, the second temperature detection part measures the temperature value of the ultraviolet spectrometer 3 in real time, the pressure detection part 27 measures the gas pressure value in the light-transmitting part 23 in real time, the signal processing board 25 converts the temperature and pressure states of the measurement result through the real-time measured temperature value and pressure value, so as to output the concentration value under the standard condition, the signal processing board 25 transmits the temperature control set value to the temperature control board 26, the temperature control board 26 performs PID control calculation according to the real-time temperature value and the target temperature value, the output powers of the first heating part 24 and the second heating part 31 are adjusted in real time, and the light-transmitting part 23 and the ultraviolet spectrometer 3 are guaranteed to be controlled at the target temperature value.
The present embodiment also provides a gas analyzer including the gas detection module as described above.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A gas detection module, comprising:
an optical path adjustment assembly, the optical path adjustment assembly comprising:
a light-transmitting member;
the first optical path adjusting piece is arranged on one side of the light-transmitting piece, and a first light-transmitting part is arranged at the center of the first optical path adjusting piece;
a second optical path adjusting member disposed at the other side of the light-transmitting member with respect to the first optical path adjusting member, the second optical path adjusting member having a second light-transmitting portion disposed at a center thereof;
the light source assembly is arranged on one side of the light-transmitting piece and comprises a light-transmitting piece and a light-emitting unit;
the connecting piece is connected with the light-transmitting piece;
the light-emitting point of the diffusible light source, the center of the first light-passing part and the center of the second light-passing part are positioned on the same horizontal straight line.
2. The gas detection module of claim 1, further comprising:
the ultraviolet spectrometer is arranged on the other side of the optical path adjusting assembly and connected with the light-passing piece, and the center of a slit of the ultraviolet spectrometer and the center of the second light-passing part are positioned on the same horizontal straight line.
3. The gas detection module of claim 1, wherein the first optical path adjustment member and the second optical path adjustment member are both concave mirrors.
4. The gas detection module of claim 2, wherein the optical path adjustment assembly further comprises:
a first heating member disposed outside the light-transmitting member;
the first temperature detection piece is arranged on the outer side of the light-transmitting piece.
5. The gas detection module of claim 4, wherein a second heating element and a second temperature detection element are disposed on an exterior side of the ultraviolet spectrometer.
6. The gas detection module of claim 5, wherein the optical path adjustment assembly further comprises:
the air inlet hole is arranged on the outer side of the light-transmitting piece;
the exhaust hole, the exhaust hole set up in the outside of leading to the light piece, the outside of leading to the light piece still is provided with pressure detection spare, pressure detection spare with the exhaust hole is connected.
7. The gas detection module of claim 6, further comprising:
the signal processing board is arranged on the outer side of the light-transmitting piece and is electrically connected with the diffusible light source, the ultraviolet spectrometer and the pressure detection piece.
8. The gas detection module of claim 7, further comprising:
the temperature control board, the temperature control board with the signal processing board set up side by side in the outside of light-passing piece, just the temperature control board with the signal processing board first temperature detects the piece the second temperature detects the piece first heating member reaches second heating member electric connection.
9. The gas detection module of claim 2, further comprising:
and the protecting piece is wrapped on the outer sides of the optical path adjusting assembly and the ultraviolet spectrometer.
10. A gas analyzer comprising a gas detection module as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120018910.8U CN214150427U (en) | 2021-01-05 | 2021-01-05 | Gas detection module and gas analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120018910.8U CN214150427U (en) | 2021-01-05 | 2021-01-05 | Gas detection module and gas analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214150427U true CN214150427U (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120018910.8U Active CN214150427U (en) | 2021-01-05 | 2021-01-05 | Gas detection module and gas analyzer |
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|---|---|
| CN (1) | CN214150427U (en) |
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2021
- 2021-01-05 CN CN202120018910.8U patent/CN214150427U/en active Active
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