CN111735746A - Handheld oil smoke detector - Google Patents
Handheld oil smoke detector Download PDFInfo
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- CN111735746A CN111735746A CN202010523442.XA CN202010523442A CN111735746A CN 111735746 A CN111735746 A CN 111735746A CN 202010523442 A CN202010523442 A CN 202010523442A CN 111735746 A CN111735746 A CN 111735746A
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- detector
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- oil smoke
- gas
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- 239000000779 smoke Substances 0.000 title claims abstract description 56
- 238000001514 detection method Methods 0.000 claims abstract description 86
- 238000005070 sampling Methods 0.000 claims abstract description 77
- 230000001681 protective effect Effects 0.000 claims description 33
- 239000006233 lamp black Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000007547 defect Effects 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 82
- 239000002245 particle Substances 0.000 description 9
- 238000000149 argon plasma sintering Methods 0.000 description 6
- 239000003517 fume Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000000790 scattering method Methods 0.000 description 3
- 210000003437 trachea Anatomy 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
- G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/075—Investigating concentration of particle suspensions by optical means
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
The invention discloses a handheld oil smoke detector, aiming at solving the defect that the existing detector is not suitable for the sampling inspection requirement of sampling inspection personnel and is heavy. The device comprises a sampling instrument and a detection box, wherein a sampling pipe is detachably connected to the sampling instrument, a detection cavity and a detector are arranged in the sampling instrument, the sampling pipe is communicated with the sampling cavity, the sampling cavity is communicated with the detection box through an oil smoke pipeline, the detection box is connected with a main pump body, the main pump body is communicated with the oil smoke pipeline, and a filter is further connected between the main pump body and the oil smoke pipeline. The handheld detector is more suitable for the use scene of the checker, and the characteristic of flexible connection of the sampling instrument and the detection box enables the sampling to be conveniently arranged.
Description
Technical Field
The invention relates to environment-friendly equipment, in particular to a handheld type oil smoke detector.
Background
With the rapid development of the food industry, the oil smoke discharge amount of the food industry also rapidly increases. The discharged oil smoke causes great harm to the environment and has adverse effect on the life of nearby residents. Aiming at the oil smoke pollution problem of the catering industry, the national environmental protection ministry strictly requires that environmental protection bureaus of provinces, cities, autonomous regions and direct jurisdictions in China list the oil smoke pollution problem into the normal environmental management working range; the non-organized emission of oil fume pollution sources is strictly prohibited, ventilation facilities and purification devices are forcibly installed without ventilation equipment and purification devices, and the maximum allowable emission concentration cannot exceed 2.0mg/m 3.
Because the oil smoke discharges discontinuously, and the discharge concentration of the oil smoke also changes, the oil smoke detection needs to be continuously monitored, and an online oil smoke detector becomes a development trend of oil smoke discharge monitoring. The existing online oil smoke detector adopts an oil smoke receiver such as a tin dioxide receiver to detect the concentration of oil smoke, and the receiver is seriously corroded by the oil smoke, so that the detection precision of the detector is deviated, and the service life of the detector is very limited.
Chinese patent publication No. CN206847688U, entitled as an oil smoke on-line monitor based on laser scattering method, discloses an oil smoke on-line monitor based on laser scattering method, which comprises an oil smoke detection unit, a filter and a flow detection unit sequentially connected by an airflow pipe, wherein the oil smoke detection unit and the flow detection unit are both connected with a signal processor, the front end of the oil smoke detection unit is connected with a diluent gas insufflator, the signal processor further comprises an operation state detection module, the operation state detection module is connected to a fan and a purifier circuit through a hall receiver, and the signal processing module transmits monitoring information to a server. The on-line monitor adopts a laser scattering method, and has high detection precision. The concentration detection unit is additionally provided with the diluent gas insufflator, so that the corrosivity and the pollution of oil smoke substances to the photoelectric device are weakened, the service life of the device is prolonged, and frequent maintenance is not needed. The setting of buffer flask and air current pipe heating film can effectively get rid of the condensation water droplet in the sampling air current, avoids the water droplet to influence the concentration parameter. It has the use needs that do not adapt to the casual examination personnel, and is difficult to carry, and is comparatively heavy.
Disclosure of Invention
The invention overcomes the defects that the existing detector is not suitable for the sampling requirement of sampling personnel and is heavy, and provides a handheld oil smoke detector which is lighter and more portable than a fixed detector.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a handheld lampblack detector, includes sampler and detection case, and releasable connection has the sampling pipe on the sampler, is equipped with detection chamber and detector in the sampler, and sampling pipe intercommunication sampling chamber, the sampling chamber is through oil smoke pipeline intercommunication detection case, and the detection case is connected with the main pump body, and the main pump body communicates oil smoke pipeline, still is connected with the filter between the main pump body and the oil smoke pipeline.
The invention separates the heavy sampling instrument from the detection box, and the sampling tube is detachably connected with the sampling instrument. The sampling tube can be replaced by itself, thereby adapting to different application occasions. The detection box is heavy and uses flexible or flexible pipelines to connect the two. The main pump body generates suction force, and the oil smoke pipeline sucks oil smoke into the sampling cavity through the sampling pipe. The detector detects the amount of particulate matter in the oil smoke. The gas which is detected continues to reach the main pump body along the oil smoke pipeline, so that the main pump body is prevented from being polluted by long-term work, the gas in the oil smoke pipeline is filtered by a filter in the oil smoke pipeline, and water vapor and particle objects in the oil smoke pipeline are removed. The detector is arranged on two sides of the detection cavity.
Preferably, the detection box is connected with an auxiliary pump body, the auxiliary pump body is communicated with the sampling instrument through a protection pipeline, an air filter element for filtering air is arranged in the protection pipeline, an air suction port is arranged on the detection box, and the auxiliary pump body is communicated with the air suction port and blows air into the periphery of the detector to form protection air. Since the detector takes the form of light scattering for measurement, it is not possible to place the detection gas in the duct for isolation. The oil smoke inevitably pollutes the detector. Therefore, the auxiliary pump body is arranged and blows gas to the detector in the sampling instrument to form protective gas, and the phenomenon that the detected gas is dispersed to the detector to influence the normal work of the detector is avoided.
Preferably, the detector comprises a laser generator and a receiver, the laser generated by the laser generator reaches the receiver after passing through the detection cavity, and the receiver is electrically connected with the controller. The detector is based on the principle that when the laser generator emits laser, the laser is influenced by particles in the laser passing through the detection cavity to generate light scattering, and the receiver collects the light intensity irradiated to the surface of the laser during the light scattering process, so that the particle content of the gas in the laser is quantitatively analyzed.
Preferably, the detection box is electrically connected with the sampling instrument, and the controller is arranged in the detection box. When the collector collects data, the data are sent to the controller in the detection box in an electric connection mode, and the controller analyzes and obtains whether the detection gas meets the emission standard and the working condition of the purifying equipment together with the built-in data.
Preferably, the filter includes an oil filter for filtering moisture and an air filter for filtering particles. In order to avoid detecting that gas pollutes the main pump body, two filters are arranged, and the two filters are arranged in tandem and are respectively used for filtering water vapor and particles. The purified gas can be led out from the corresponding outlet in the detection box.
Preferably, the detection box is provided with a power supply and a display electrically connected with the controller. To improve the portability of the device, a built-in power supply is provided. The display is connected with the controller electricity, can show whether gaseous emission standard and the concrete registration of detecting accords with, and is more directly perceived.
Preferably, the sampling pipe and the oil smoke pipeline are respectively connected to two ends of the sampling cavity, and the laser generator and the receiver are respectively arranged at two ends of the sampling instrument in the radial direction of the detection gas passing through the sampling cavity. The gas to be detected in the sampling cavity is taken as the flowing direction, the laser generator and the receiver are arranged in the radial direction, and particularly the plane of the receiver is parallel to the flowing direction. The gas can be better detected by the arrangement.
Preferably, the sampling instrument is provided with a plurality of laser generators, and direct light of the laser generators is offset from the receiver. The laser path generated by the laser generator does not pass through the receiver, and the receiver does not receive the light generated by the laser generator under the condition that the detection gas is completely clean.
Preferably, a protective gas pipe is arranged in the sampling instrument and communicated with a protective pipeline, the laser generator is arranged in a positioning cylinder, two ends of the positioning cylinder are open, the positioning cylinder is communicated with the detection cavity, the protective gas pipe is communicated with the tail of the positioning cylinder, and a first gas sheath port along the radial direction is arranged at the head, close to the laser generator, of the positioning cylinder of the protective gas pipe. The diameter of the first gas sheath opening is shorter than the diameter of the section of the protective gas pipe, the flow speed of gas passing through the first gas sheath opening is higher, the detection gas can be better excluded, and the gas is prevented from approaching the laser generator; the inner wall of the positioning cylinder is provided with a plurality of positioning web plates arranged along the radial direction, the positioning web plates support the laser emitter, gas is exhausted towards the head of the positioning cylinder along the axial direction, and the gas are combined to exhaust the detection gas.
Preferably, the sampling cavity protrudes towards the receiver to form a gas sheath cavity, the protection trachea is communicated with the gas sheath cavity, and the protection trachea is provided with a second gas sheath opening arranged along the radial direction of the gas sheath cavity on the gas sheath cavity. The second gas sheath opening is arranged at the position of the gas sheath cavity close to the sampling cavity. The opening is circular, and the second gas sheath mouth is equidistant to be arranged. The caliber of the second gas sheath opening is smaller than the pipe diameter of the protective gas pipe. A corresponding "curtain" of gas may be created in the sheath lumen to exclude the detection gas. The protective gas reaches the oil smoke pipeline along the sampling cavity and is exhausted through the detection gas.
Compared with the prior art, the invention has the beneficial effects that: (1) the handheld detector is more suitable for the use scene of the inspector; (2) the characteristic of sampling appearance and detection case flexonics makes the sampling convenient to arrange.
Drawings
FIG. 1 is a schematic view of a sampler of the present invention;
FIG. 2 is a schematic view of the detection chamber of the present invention;
FIG. 3 is a cross-section of the invention in the area of FIG. 2A;
FIG. 4 is a schematic view of a sheath chamber and a nozzle in embodiment 2 of the present invention;
in the figure: the device comprises a sampling instrument 1, a detection box 2, a sampling pipe 3, a detection cavity 4, an oil smoke pipeline 5, an air filter element 6, a laser generator 7, a receiver 10, an oil filter 11, an air filter 12, a display 13, a protective air pipe 14, an air nozzle 15, a positioning cylinder 16, a first air sheath port 17, an air sheath cavity 18, a second air sheath port 19, a cable 20, a main pump body 21, an auxiliary pump body 22, a sampling analysis chamber 23 and a power supply 24.
Detailed Description
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example 1:
the utility model provides a hand-held type oil smoke detector, as shown in fig. 1 and fig. 2, including sampler 1 and detection case 2, releasable connection has sampling pipe 3 on the sampler 1, is equipped with in the sampler 1 and detects chamber 4 and detector, and sampling pipe 3 intercommunication sampling chamber, sampling chamber is through oil smoke pipeline 5 intercommunication detection case 2, as shown in fig. 3, and detection case 2 is connected with the main pump body, and the main pump body communicates oil smoke pipeline 5, still is connected with the filter between the main pump body and the oil smoke pipeline 5. The detection box 2 is connected with an auxiliary pump body, the auxiliary pump body is communicated with the sampling instrument 1 through a protection pipeline, an air filter element 6 for filtering air is arranged in the protection pipeline, an air suction port is arranged on the detection box 2, and the auxiliary pump body is communicated with the air suction port and blows air into the periphery of the detector to form protective gas. Since the detector takes the form of light scattering for measurement, it is not possible to place the detection gas in the duct for isolation. The oil smoke inevitably pollutes the detector. Therefore, the auxiliary pump body is arranged and blows gas to the detector in the sampling instrument 1 to form protective gas, and the phenomenon that the detected gas is dispersed to the detector to influence the normal work of the detector is avoided. The detector comprises a laser generator 7 and a receiver 10, laser generated by the laser generator 7 reaches the receiver 10 after passing through the detection cavity 4, and the receiver 10 is electrically connected with the controller. The principle of the detector is that when the laser generator 7 emits laser light, the laser light is influenced by particles in the laser light passing through the detection cavity 4 to generate light scattering, and the receiver 10 collects the light intensity irradiated to the surface of the laser light during the light scattering process, so that the particle content of the gas in the laser light is quantitatively analyzed. The detection box 2 is electrically connected with the sampling instrument 1, and the controller is arranged in the detection box 2. After the collector collects data, the data can be sent to a controller in the detection box 2 in an electrically connected mode, and the controller can analyze the data and obtain whether the detection gas meets the emission standard or not and the working condition of the purifying equipment with the built-in data.
The filter includes an oil filter 11 for filtering moisture and an air filter 12 for filtering particles. In order to avoid detecting that gas pollutes the main pump body, two filters are arranged, and the two filters are arranged in tandem and are respectively used for filtering water vapor and particles. The purified gas can be led out from a corresponding outlet in the detection chamber 2.
The detection box is provided with a power supply 24 and a display 13 electrically connected with the controller. To improve the portability of the device, a built-in power supply is provided. The display 13 is electrically connected with the controller, can display whether the detected gas meets the emission standard and the specific indication number, and is more intuitive. In addition, a printer is provided to print out the corresponding readings for backup.
A protective air pipe 14 is arranged in the sampling instrument 1, the protective air pipe 14 is communicated with a protective pipeline, the laser generator is arranged in a positioning cylinder 16, two ends of the positioning cylinder 16 are opened, the positioning cylinder 16 is communicated with the detection cavity 4, the protective air pipe 14 is communicated with the tail part of the positioning cylinder 16, and a first air sheath port 17 along the radial direction is arranged at the head part of the positioning cylinder 16, close to the laser emitter, of the protective air pipe 14. The sampling instrument 1 is provided with an air inlet pipe interface, and the protective air pipe 14 is connected with a protective pipeline through the air inlet pipe interface. The diameter of the first gas sheath opening 17 is shorter than the section diameter of the protective gas pipe 14, the flow speed of gas passing through the first gas sheath opening 17 is faster, and the detection gas can be better excluded to avoid being close to a laser generator; the inner wall of the positioning cylinder 16 is provided with a plurality of positioning web plates arranged along the radial direction, the positioning web plates support the laser emitter, gas is exhausted towards the head part of the positioning cylinder 16 along the axial direction, and the gas and the positioning web plates are combined to exhaust the detection gas. The sampling cavity protrudes towards the receiver to form an air sheath cavity 18, the protective air tube 14 is communicated with the air sheath cavity 18, and a second air sheath opening 19 arranged along the radial direction of the air sheath cavity 18 is formed in the protective air tube 14 on the air sheath cavity 18. The second sheath port 19 is disposed in the sheath lumen 18 adjacent the sampling lumen. The openings are circular and the second sheath ports 19 are arranged at equal intervals. The caliber of the second sheath opening 19 is smaller than the caliber of the protective trachea 14. A corresponding "curtain" of gas may be created in the sheath lumen 18 to exclude the detection gas. The protective gas reaches the fume pipe 5 along the sampling cavity and is exhausted together with the detection gas.
The electrical connection between the sampling instrument and the test box is realized by providing a wire aviation connector on the sampling instrument and a corresponding cable connector on the test item, which are connected by a cable 20.
The end of the fume pipe in the detection box is connected with a sampling analysis chamber 23, and the detection gas passing through the filter is collected for subsequent detection.
The invention separates a heavy sampling instrument 1 from a detection box 2, and a sampling tube 3 is detachably connected with the sampling instrument 1. The sampling tube 3 can be replaced by itself, thereby adapting to different application occasions. The detection box 2 is heavy, and is connected with the detection box through a flexible or flexible pipeline, and the oil smoke pipeline and the protection pipeline are both flexible or flexible. The main pump body generates suction force, and the oil smoke pipeline 5 sucks oil smoke into the sampling cavity through the sampling pipe 3. The detector detects the amount of particulate matter in the oil smoke. The detected gas continues to reach the main pump body along the oil smoke pipeline 5, and in order to avoid polluting the main pump body in long-term work, the gas in the oil smoke pipeline 5 is filtered by a filter, and water vapor and particulate matters in the gas are removed. The detector is arranged on both sides of the detection chamber 4. The whole block that is the cross-section for the long direction of sampler 1, one end has a handle of convenient gripping, and the handle is connected on the block through two cylinders, and two cylinder slopes, and the laser generator that corresponds sets up in these two cylinders. The other end far away from the handle is of a blunt structure.
Example 2:
as shown in fig. 4, embodiment 2 has the following features in addition to embodiment 1:
the second air sheath opening 19 extends towards the axle center of the air sheath cavity 18 to form the air nozzle 15, the axle center of the air nozzle 15 inclines towards the opening of the air sheath cavity 18, and the height of the point where the connecting line of the axle centers of the air nozzles 15 converges is lower than that of the axle center of the air sheath cavity 18.
The air flow speed of each air nozzle is similar and can be approximately considered as the same. The air flow sprayed out by the air nozzles arranged in the circumferential direction can be collected at the position of the lower part of the air sheath cavity. Due to the inclined arrangement of the air nozzles, the air flow caused by the inclination is excluded along the lower part in the axial direction of the air sheath cavity. The detection gas is mainly measured at the position, close to the axis, of the gas sheath cavity, and the arrangement can avoid the interference of the protective gas on the detection gas.
A plurality of air nozzle groups are arranged on the inner wall of the air sheath cavity 18 along the axial direction, the intersection points of the air flow ejected by the air nozzle groups form an air flow line, and the air flow line inclines to the lower part of the opening of the air sheath cavity 18.
Through such air cock 15 mode of setting up, the guide protective gas flows along the downward route of slope, avoids along the axle center blowout of gas sheath chamber 18, influences the gaseous concentration of detection, thereby avoids the detection numerical value deviation that the protective gas leads to the influence of detecting gas. The shielding gas flows out from the lower position, not in the light-conducting path of the laser transmitter, and is discharged from the fume duct 5.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.
Claims (10)
1. The utility model provides a handheld lampblack detector, characterized by, includes sampler and detection case, and releasable connection has the sampling pipe on the sampler, is equipped with detection chamber and detector in the sampler, and sampling pipe intercommunication sampling chamber, the sampling chamber is through oil smoke pipeline intercommunication detection case, and the detection case is connected with the main pump body, and main pump body intercommunication oil smoke pipeline still is connected with the filter between the main pump body and the oil smoke pipeline.
2. The hand-held lampblack detector as claimed in claim 1, wherein the detection chamber is connected to a secondary pump body, the secondary pump body is connected to the sampler through a protective conduit, the protective conduit is provided with an air filter for filtering air, the detection chamber is provided with an air inlet, and the secondary pump body is connected to the air inlet and blows air around the detector to form a protective atmosphere.
3. The hand-held lampblack detector as claimed in claim 1, wherein the detector comprises a laser generator and a receiver, wherein laser light generated by the laser generator passes through the detection chamber and reaches the receiver, and wherein the receiver is electrically connected to the controller.
4. The hand-held lampblack detector according to claim 3, wherein the detector housing is electrically connected to the sampler, and wherein the controller is disposed in the detector housing.
5. The hand-held lampblack detector as claimed in claim 1, wherein the filter comprises an oil filter for filtering water vapor and an air filter for filtering particulates.
6. The hand-held lampblack detector as claimed in claim 1, wherein the detection housing includes a power source and a display electrically connected to the controller.
7. The hand-held lampblack detector as claimed in claim 1, wherein the sampling tube and the lampblack pipe are connected to the two ends of the sampling chamber, respectively, and the sampler is provided with a laser generator and a receiver at the two ends in the radial direction of the detection gas passing through the sampling chamber, respectively.
8. The hand-held lampblack detector as claimed in claim 7, wherein the sampler is provided with a plurality of laser generators, the direct light of which is offset from the receiver.
9. The handheld lampblack detector as claimed in claim 2, wherein a protective gas pipe is arranged in the sampler and is communicated with a protective pipeline, the laser generator is arranged in a positioning cylinder, two ends of the positioning cylinder are open, the positioning cylinder is communicated with the detection cavity, the protective gas pipe is communicated with the tail of the positioning cylinder, and the protective gas pipe is provided with a first gas sheath port in the radial direction at the head of the positioning cylinder close to the laser emitter.
10. The handheld lampblack detector as claimed in claim 9, wherein the sampling cavity protrudes towards the receiver to form a sheath cavity, the protection tube is communicated with the sheath cavity, and the protection tube is provided with a second sheath port arranged along a radial direction of the sheath cavity on the sheath cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010523442.XA CN111735746B (en) | 2020-06-10 | 2020-06-10 | Handheld oil smoke detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010523442.XA CN111735746B (en) | 2020-06-10 | 2020-06-10 | Handheld oil smoke detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111735746A true CN111735746A (en) | 2020-10-02 |
| CN111735746B CN111735746B (en) | 2022-10-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010523442.XA Active CN111735746B (en) | 2020-06-10 | 2020-06-10 | Handheld oil smoke detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113504231A (en) * | 2021-02-10 | 2021-10-15 | 北京朗观视觉科技有限公司 | Hand-held type tail gas detection device |
| CN114166767A (en) * | 2021-12-06 | 2022-03-11 | 吉林大学 | Carbon concentration spectrum monitoring system |
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