CN211263175U - Installation detection device based on non-dispersive infrared gas sensor - Google Patents
Installation detection device based on non-dispersive infrared gas sensor Download PDFInfo
- Publication number
- CN211263175U CN211263175U CN201922442579.8U CN201922442579U CN211263175U CN 211263175 U CN211263175 U CN 211263175U CN 201922442579 U CN201922442579 U CN 201922442579U CN 211263175 U CN211263175 U CN 211263175U
- Authority
- CN
- China
- Prior art keywords
- gas sensor
- infrared gas
- gas
- chamber
- detection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses an installation detection device based on non-dispersion infrared gas sensor, including the trunk line, be equipped with the detection pipeline on the above-mentioned trunk line, above-mentioned detection pipeline first section intercommunication trunk line, the end connects the gas-water separator entry end, above-mentioned gas-water separator exit end is equipped with and is equipped with diverging device, it detects the chamber to be equipped with two at least on the above-mentioned diverging device, the aforesaid detects the chamber and is linked together with diverging device, the aforesaid is equipped with non-dispersion infrared gas sensor in detecting the chamber, above-mentioned trunk line end is equipped with the battery valve, the control unit signal connection of above-mentioned non-dispersion infrared gas sensor and battery valve, a control unit is used for improving non-dispersion infrared gas sensor in long-term use, the ido.
Description
Technical Field
The utility model belongs to detection device, concretely relates to installation detection device based on non-dispersion infrared gas sensor.
Background
The non-dispersive infrared NDIR gas sensor is a gas sensing device which selects absorption characteristics based on infrared spectra of different gas molecules, identifies gas components by utilizing the relation between gas concentration and absorption intensity and determines the concentration of the gas components, and is usually used for testing whether dangerous gases, such as hydrocarbon combustible gases, exist in a pipeline.
The non-dispersive infrared gas sensor comprises an infrared light emitting part and an infrared light receiving part, and the working principle of the sensor is that when infrared light passes through gas to be measured, gas molecules have absorption effect on the infrared light with specific wavelength, the absorption relation obeys Lambert-beer absorption law, and through vibration between the molecules, the gas molecules have different and specific atomic absorption wavelengths in an infrared band, so that the gas concentration is detected and determined by measuring the change of optical energy under the specific wavelength.
Specifically, inside the gas chamber of the sensor, the infrared light source emits light in an infrared band, the energy of the light is absorbed by the gas in the gas chamber, and the total energy absorbed corresponds to the concentration of all the gas in the gas chamber. The radiation detector is responsive only to a specific wavelength of the gas being measured by virtue of the integration of an infrared filter for that specific wavelength. The electrical signal obtained by the detector corresponds to the light energy absorbed by the gas.
In the use process of the existing non-dispersive infrared gas sensor, the measurement deviation is larger due to moisture in a pipeline or damage, so that the non-dispersive infrared gas sensor needs to be installed in the pipeline for improvement so as to optimize the measurement accuracy.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an installation detection device based on non-dispersion infrared gas sensor for improve non-dispersion infrared gas sensor in long-term use, the even has the sensor to break down, leads to the exhaust gas problem that exceeds standard.
Through the technical problem of description, the utility model discloses a following technical scheme:
the utility model provides an installation detection device based on non-dispersion infrared gas sensor, includes the trunk line, be equipped with the detection pipeline on the above-mentioned trunk line, above-mentioned detection pipeline first section intercommunication trunk line, the end connects the gas-water separator entry end, above-mentioned gas-water separator exit end is equipped with diverging device, above-mentioned diverging device is last to be equipped with two at least and to detect the chamber, above-mentioned detection chamber is linked together with diverging device, be equipped with non-dispersion infrared gas sensor in the above-mentioned detection chamber, above-mentioned trunk line end is equipped with the battery valve, above-mentioned non-dispersion infrared gas sensor and the control.
Preferably, above-mentioned diverging device includes the body, is equipped with two drainage plates in the above-mentioned body, and the leading-in detection chamber of air current through the drainage plate is equipped with the infrared emitter that non-dispersion infrared gas sensor pairs in the above-mentioned detection chamber
Further, the detection cavity is provided with an inlet and an outlet, and the inlet and the outlet of the detection cavity are communicated with the pipe body.
Still further, the head end of the drainage plate is provided with an introduction part, the tail end of the drainage plate is provided with a leading-out part, the introduction part is positioned on one side of an inlet of the detection cavity, and the leading-out part is positioned on one side of an outlet of the detection cavity.
Furthermore, a drainage channel is arranged between the two drainage plates.
Preferably, a cyclone reversing pipe is arranged in the gas-water separator, and a switch valve is arranged at the outlet end of the gas-water separator.
Compared with the prior art, the beneficial effects and advantages of the utility model reside in one or more of following effect:
the utility model prevents the moisture in the gas from entering the detection cavity by the gas-water separator by arranging the detection pipeline on the main pipeline, thereby avoiding the moisture from influencing the detection result of the non-dispersive infrared gas sensor; the battery valve control unit is connected with the battery valve control unit through the shunt device, the two detection cavities respectively detect the signals, the non-dispersive infrared gas sensors in the two detection cavities output the detected signals to the battery valve control unit, if dangerous gases such as hydrocarbon combustible gases are collected by the two non-dispersive infrared gas sensors, the battery valve is powered on and closed to interrupt an airflow channel, and if the degree of the non-dispersive infrared gas sensor is not or only exceeds the standard, the battery valve is not closed.
The scheme also divides the tube body through the drainage plate, guides the airflow into the detection cavity through the drainage plate, and adapts the non-dispersive infrared gas sensor and the infrared emitter in the guide detection cavity, thereby realizing detection; the gas in the detection cavity is respectively led in and led out through the leading-in part and the leading-out part, so that the gas flow is in continuous circulation, the reading of the non-dispersive infrared gas sensor has relative variability, and the content interval of the gas to be detected is conveniently expressed.
Drawings
FIG. 1 is a schematic view of the gas flow through the present invention.
Fig. 2 is a schematic structural diagram of the invention.
Description of reference numerals:
the device comprises a main pipeline 1, a detection pipeline 2, a gas-water separator 3, a flow divider 4, a detection cavity 5, a non-dispersive infrared gas sensor 6, a battery valve 7, a pipe body 8, a flow guide plate 9, an infrared emitter 10, an introduction part 11, an extraction part 12, a drainage channel 13, a cyclone reversing pipe 14 and a switch valve 15.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solution of the present invention will be described clearly and completely through the following detailed description. It is to be understood that the specific embodiments described herein are merely illustrative of the invention, and that the described embodiments are merely some, not all, and are not intended to limit the invention. And based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Example 1:
referring to the expressions of fig. 1 and 2, the present embodiment is described as a non-dispersive infrared gas sensor-based installation detection device, which includes a main pipe 1, and the main pipe 1 is a main passage pipe as a necessary passage for large-flow gas passage.
The main pipeline 1 is provided with a detection pipeline 2, the detection pipeline 2 is a branch pipeline on the main pipeline 1, and is mainly used for shunting gas in the main pipeline 1, processing and detecting the shunted gas, and is applicable to the sampling inspection work of the main pipeline 1; in actual use, the air flow of the main pipe 1 is in direct proportion to the air flow in the detection pipe 2, and if the air flow of the main pipe 1 is increased, the air flow entering the detection pipe 2 is also increased.
The first section of the detection pipeline 2 is communicated with the main pipeline 1, the tail end of the detection pipeline is connected with the inlet end of a gas-water separator 3, the gas-water separator 3 adopts an industrial conventional ZCGF gas-water separator, and the specific model can select different specifications according to the gas flow of the detection pipeline 2; the gas-water separator 3 effectively removes liquid water in the gas, and avoids the influence on the detection degree caused by excessive water content in the gas.
The outlet end of the gas-water separator 3 is provided with a flow dividing device 4, the flow dividing device 4 is at least provided with two detection cavities 5, the detection cavities 5 are communicated with the flow dividing device 4, and specifically, the detection cavities 5 are provided with input/output pipelines which are connected into the flow dividing device 4.
The detection cavity 5 is internally provided with a non-dispersive infrared gas sensor 6, the tail end of the main pipeline 1 is provided with a battery valve 7, and the non-dispersive infrared gas sensor 6 is in signal connection with a control unit of the battery valve 7.
A plurality of non-dispersive infrared gas sensors 6 are installed in different detection cavities 5, the non-dispersive infrared gas sensor 6 described in this embodiment is a commercially available non-dispersive infrared gas sensor 6, for example, an MH-742B non-dispersive red sensor, and the non-dispersive infrared gas sensor 6 includes a light source, an optical cavity, a filter (grating), and a detector. Infrared absorption is generated through the frequency of infrared rays, the vibration and the rotation frequency of gas molecules, the gas is irradiated through an infrared light source, and monochromatic light is obtained by using a grating (optical filter) after irradiation, so that a detector can conveniently obtain the illumination condition, and whether hydrocarbon combustible gas exists or not is detected; when the non-dispersive infrared gas sensor 6 detects that dangerous gas exists in the detection cavity 5, the non-dispersive infrared gas sensor 6 outputs signals to the control unit of the battery valve 7, when the dangerous gas is collected by the two non-dispersive infrared gas sensors 6, the battery valve 7 is electrified and closed to interrupt the circulation of the main pipeline 1, if no output signal of the non-dispersive infrared gas sensor 6 exists, the battery valve 7 is not closed, if only one output signal of the non-dispersive infrared gas sensor 6 exists, the battery valve 7 is not closed, and the computer can be adapted to the battery valve 7, so that the condition can be recorded and maintained.
Example 2:
according to the above-mentioned embodiment, the description of this embodiment is that, above-mentioned diverging device 4 includes body 8, and through 8 butt joints 3 exit ends of deareator, be equipped with two drainage plates 9 in above-mentioned body 8, drainage plate 9 fixes at 8 inner walls of body.
The airflow is guided into the detection cavity 5 through the drainage plate 9, an infrared emitter 10 matched with the non-dispersive infrared gas sensor 6 is arranged in the detection cavity 5, and the infrared emitter 10 is a light source emitter corresponding to a light filter and a detector in the non-dispersive infrared gas sensor 6.
Preferably implement, above-mentioned detection chamber 5 is equipped with entry and export, and the entry and the export of above-mentioned detection chamber 5 all communicate with body 8 each other, and specifically speaking, the entry and the export of detection chamber 5 are the input pipeline and the output pipeline of detecting chamber 5, are equipped with the air current hole on its body 8, insert the input/output pipeline that detects chamber 5 through the air current hole.
In further implementation, the leading-in part 11 is arranged at the head end of the drainage plate 9, the leading-out part 12 is arranged at the tail end of the drainage plate, the leading-in part 11 is positioned at the inlet side of the detection cavity 5, and the leading-out part 12 is positioned at the outlet side of the detection cavity 5; the introducing part 11 is arc-shaped to reduce the resistance of the air flow, so that the air flow can be conveniently introduced into the detection cavity 5 from the tube body 8; the leading-out portion 12 is L-shaped to prevent the output airflow from colliding with the airflow in the pipe 8.
In a preferred embodiment, a drainage channel 13 is arranged between the two drainage plates 9, wherein the drainage channel 13 is a gap between the two drainage plates 9, when the airflow volume is large, and the pressure of the airflow is increased, a large amount of air in the tube body 8 is mainly discharged through the drainage channel 13 and is rapidly output to other positions, so that the detection cavity 5 in which a large amount of air enters through the drainage plates 9 is avoided, and thus the pressure of the detection cavity 5 is increased, because the relative concentration of the air is not increased when the air is compressed, but the absolute concentration of the air is increased. Therefore, in the space of unit volume, the number of molecules of the gas to be detected is increased, and therefore, under the condition that the relative concentration of the gas is not changed, the detection result of the sensor is influenced to a certain extent along with the increase of the pressure of the gas, so that the detection stability is influenced.
Example 3:
according to the above embodiment, the description of this embodiment is that the gas-water separator 3 is provided with the cyclone reversing tube 14, and the outlet end of the gas-water separator 3 is provided with the switch valve 15, as is well known, most of gas sensors are sensitive to the ambient temperature and humidity, and if the humidity changes obviously, the water vapor in the gas flow occupies other spaces, so that the gas content to be measured falls, and the specific parameters in the gas flow cannot be obtained.
For example, when the air enters an outdoor humid air environment from a dry environment with air conditioning, the water vapor in the air flow occupies oxygen, so that the oxygen parameters are inaccurate, and the sensor is in a high-temperature and low-humidity environment for a long time, so that the phenomenon of volatilization and dryness of the electrolyte is easily caused, so that the transmission of electrons is restricted, the internal resistance is increased, the reaction speed is slowed, the sensitivity is reduced, the sensitivity of the sensor is reduced, the service life of the sensor is directly influenced, and because a small amount of moisture can not be effectively separated in the separation process of the gas-water separator 3, when the moisture separated in the gas-water separator 3 is obviously increased, the switch valve 15 needs to be manually closed, so that the moisture is prevented from entering the detection cavity 5.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, and is not intended to limit the present invention. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. It will thus be appreciated that numerous modifications and variations of the embodiments described herein will be apparent to those skilled in the art, and thus the invention is not to be limited to the embodiments described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
In particular, any modification, equivalent substitution, variation and improvement in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, drawings and claims of this application shall be included within the scope of protection of this invention.
Claims (6)
1. The utility model provides an installation detection device based on non-dispersion infrared gas sensor, includes trunk line (1), its characterized in that: be equipped with on trunk line (1) and detect pipeline (2), pipeline (2) first section intercommunication trunk line (1), end meet gas-water separator (3) entry end, gas-water separator (3) exit end is equipped with diverging device (4), be equipped with two on diverging device (4) at least and detect chamber (5), it is linked together with diverging device (4) to detect chamber (5), be equipped with non-dispersion infrared gas sensor (6) in detecting chamber (5), trunk line (1) end is equipped with battery valve (7), non-dispersion infrared gas sensor (6) and the control unit signal connection of battery valve (7).
2. The non-dispersive infrared gas sensor based installation detection device according to claim 1, wherein: diverging device (4) are including body (8), be equipped with two drainage plates (9) in body (8), leading-in detection chamber (5) of air current through drainage plate (9), be equipped with infrared emitter (10) that non-dispersion infrared gas sensor (6) pair in detecting chamber (5).
3. The non-dispersive infrared gas sensor based installation detection device according to claim 2, wherein: the detection cavity (5) is provided with an inlet and an outlet, and the inlet and the outlet of the detection cavity (5) are communicated with the pipe body (8).
4. The non-dispersive infrared gas sensor-based installation detection device according to claim 3, wherein: the drainage plate (9) head end is equipped with induction portion (11), and the end is equipped with extraction portion (12), induction portion (11) are located and detect chamber (5) entry one side, extraction portion (12) are located and detect chamber (5) export one side.
5. The non-dispersive infrared gas sensor based installation detection device according to claim 2, wherein: a drainage channel (13) is arranged between the two drainage plates (9).
6. The non-dispersive infrared gas sensor based installation detection device according to claim 1, wherein: a cyclone reversing pipe (14) is arranged in the gas-water separator (3), and a switch valve (15) is arranged at the outlet end of the gas-water separator (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922442579.8U CN211263175U (en) | 2019-12-30 | 2019-12-30 | Installation detection device based on non-dispersive infrared gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922442579.8U CN211263175U (en) | 2019-12-30 | 2019-12-30 | Installation detection device based on non-dispersive infrared gas sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211263175U true CN211263175U (en) | 2020-08-14 |
Family
ID=71956700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922442579.8U Expired - Fee Related CN211263175U (en) | 2019-12-30 | 2019-12-30 | Installation detection device based on non-dispersive infrared gas sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211263175U (en) |
-
2019
- 2019-12-30 CN CN201922442579.8U patent/CN211263175U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7696501B2 (en) | Apparatus for monitoring engine exhaust | |
| CN104457852A (en) | On-line monitoring system for greenhouse gas emission of fixed combustion source | |
| CN101726468B (en) | Nox analyzer | |
| CN104833645B (en) | Gas sensor with adjustable range, sensing system and sensing method | |
| CN102288574A (en) | Device and method for quantitatively analyzing concentration of multi-component oil fume | |
| CN105738309A (en) | Methane detector and method | |
| CN205317662U (en) | UV spectrum flue gas analyzer | |
| CN211263175U (en) | Installation detection device based on non-dispersive infrared gas sensor | |
| CN101131348A (en) | SF6 gas measuring device | |
| KR20180096234A (en) | Apparatus for measuring black carbon | |
| CN104990883A (en) | Device for detecting gas concentration by spectrometer | |
| CN202649095U (en) | Methane measurement intelligent sensor convenient for sampling | |
| CN101393121A (en) | Methane gas concentration sensor air chamber based on infrared absorption principle | |
| CN209027989U (en) | A kind of mining three components infrared gas sensor | |
| CN103558165A (en) | Dual-wavelength difference methane concentration sensor | |
| CN213022850U (en) | Flue gas analyzer | |
| CN107340261B (en) | Water quality on-line detection system | |
| CN202057591U (en) | Fluid optical analysis equipment | |
| CN204241032U (en) | A kind of stationary combustion source greenhouse gas emission on-line monitoring system | |
| CN109297876A (en) | A method of measurement dust concentration | |
| CN213022854U (en) | Detection equipment for atmospheric pollution treatment | |
| CN203720078U (en) | Double wavelength difference methane concentration sensor | |
| CN211697390U (en) | CEMS flue gas concentration on-line monitoring device | |
| JP2003215037A (en) | Method and apparatus for hc analysis by ndir method | |
| CN209148543U (en) | Portable instrument ultramicron methane detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200814 Termination date: 20211230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |