CN211856351U - Portable ultraviolet method flue gas analyzer - Google Patents
Portable ultraviolet method flue gas analyzer Download PDFInfo
- Publication number
- CN211856351U CN211856351U CN202020488913.3U CN202020488913U CN211856351U CN 211856351 U CN211856351 U CN 211856351U CN 202020488913 U CN202020488913 U CN 202020488913U CN 211856351 U CN211856351 U CN 211856351U
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- Prior art keywords
- flue gas
- module
- controller
- ultraviolet
- gas analyzer
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- 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
- 239000003546 flue gas Substances 0.000 title claims abstract description 37
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001658 differential optical absorption spectrophotometry Methods 0.000 claims abstract description 36
- 238000001514 detection method Methods 0.000 claims description 20
- 230000002572 peristaltic effect Effects 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 26
- 238000005259 measurement Methods 0.000 abstract description 11
- 230000009286 beneficial effect Effects 0.000 abstract description 9
- 238000004868 gas analysis Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
A portable ultraviolet flue gas analyzer relates to the technical field of flue gas analysis and is used for solving the problem that the flue gas analyzer in the prior art is low in accuracy of measured values. The portable ultraviolet method flue gas analyzer comprises a power supply, a diaphragm pump, a buffer bottle, a differential pressure type flowmeter, a DOAS ultraviolet module, an electrochemical sensor module, a main control board and a controller, wherein the diaphragm pump is connected with the buffer bottle, the buffer bottle is connected with the differential pressure type flowmeter, the differential pressure type flowmeter is connected with the DOAS ultraviolet module, and the DOAS ultraviolet module is connected with the electrochemical sensor module; the detected flue gas flows through the diaphragm pump, the buffer bottle, the differential pressure type flowmeter, the DOAS ultraviolet module and the gas chamber of the electrochemical sensor module in sequence. The method has the beneficial effect of high measurement accuracy.
Description
Technical Field
The utility model belongs to the technical field of flue gas analysis technique and specifically relates to a portable ultraviolet method flue gas analyzer.
Background
With the increasing national requirements for environmental protection, the problem of how to detect the content of the exhaust gas discharged by a factory is emphasized. The environmental protection department takes a plurality of measures to reduce the atmospheric pollution. The market demand determines the blowout type development of the field of flue gas measurement, however, the measurement environment of the flue gas is very harsh in general. As is known, many sulfur-containing flue gases have very high temperature and moisture content, and the sulfur-containing flue gases are easily dissolved in water vapor, which results in small measurement data. As an ideal device for measuring each combustion parameter in flue gas, optimizing combustion efficiency, saving energy and controlling emission, the flue gas analyzer is designed particularly aiming at the requirements of the environmental protection and the industrial field, and is suitable for accurately monitoring various flue gas components of heavy pollution sources.
The measurement principle of the flue gas analyzer in the prior art mainly comprises infrared and electrochemistry, the lower limit of detection of gas concentration is higher, and the flue gas analyzer in the prior art has the problem of low accuracy of measured values.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a portable ultraviolet method flue gas analyzer for there is the problem that the measured value accuracy is low in the flue gas analyzer who solves among the prior art.
The utility model provides a technical scheme that its technical problem adopted is:
the portable ultraviolet method flue gas analyzer comprises a power supply, a diaphragm pump, a buffer bottle, a differential pressure type flowmeter, a detection module, a main control board and a controller, wherein the diaphragm pump is connected with the buffer bottle, the buffer bottle is connected with the differential pressure type flowmeter, the differential pressure type flowmeter is connected with the detection module, and the detection module comprises a DOAS ultraviolet module and an electrochemical sensor module;
the detected flue gas sequentially flows through the diaphragm pump, the buffer bottle, the differential pressure type flowmeter and the detection module;
the electrochemical sensor module and the DOAS ultraviolet module are respectively connected with the main control board, and the DOAS ultraviolet module is used for measuring SO2、NO、NO2In a concentration of (b), said electrochemical conductivityThe sensor module is used for measuring O2、CO、CO2The main control board is in communication connection with the controller.
The working process of the technical scheme is as follows: the diaphragm pump extracts the measured gas according to fixed flow rate for gas passes through buffer flask, differential pressure type flowmeter, DOAS ultraviolet module and electrochemical sensor module in proper order. Measuring SO by DOAS ultraviolet module2、NO、NO2The electrochemical sensor module contains O2Sensor, CO sensor and CO2Sensor, the gas passing through the electrochemical sensor die measuring O2、CO、 CO2The concentration of (c). And the concentration signal is sent to the main control board, and then the main control board is communicated with the controller, so that a measurement result is obtained.
The beneficial effects are that: according to the scheme, the DOAS ultraviolet module is arranged and adopts a differential absorption spectrum method to measure SO2、NO、NO2The gas concentration has the advantages of high measurement precision, strong reliability, quick response time and low detection lower limit. O is2、CO、CO2And measuring by adopting an electrochemical sensor module. According to the scheme, the diaphragm pump, the buffer bottle and the differential pressure type flowmeter are arranged, so that the stability and accuracy of flow parameters and air pressure parameters are guaranteed, and the accuracy of measured data is guaranteed. Therefore, the scheme solves the problems that the lower limit of detection of gas concentration in the prior art is higher, and the accuracy of the measured value of the flue gas analyzer in the prior art is low
Further, the ultraviolet module is wrapped with a heating film and a heat insulation film.
The beneficial effects are that: through setting up heating film and thermal-insulated membrane, make DOAS ultraviolet module whole journey companion's heat in the course of the work, reduce the influence because of environmental factor causes, further improve measurement accuracy.
Further, the buffer bottle comprises a peristaltic pump, wherein the peristaltic pump is connected with the buffer bottle and is used for pumping out liquid in the buffer bottle.
The beneficial effects are that, through setting up the peristaltic pump, take out liquid and dust, (for example, when gas volume changes, have liquid to produce), make the testing process not influenced by moisture and dust, improve the interference killing feature of testing process. Further improving the accuracy of the detection result.
Further, still include portable suitcase, the power, the diaphragm pump, the buffer bottle, the differential pressure type flowmeter, the DOAS ultraviolet module, the electrochemical sensor module, main control board and controller equipment are in portable suitcase.
The portable test device has the advantages of being convenient to carry and convenient for field test.
Further, the controller is the panel computer, be equipped with the operation panel on the portable suitcase, be equipped with the controller tank on the operation panel, controller detachable connects in the controller tank.
The portable suitcase has the beneficial effects that the controller can be separated from the portable suitcase, so that the operation of detection personnel is convenient.
Further, a ball-touch lock is arranged between the controller and the controller groove.
The controller groove has the beneficial effects that when the controller is conveniently taken down from the controller groove, the controller in the controller groove is ensured not to fall off naturally, and the controller is protected to a certain extent.
Furthermore, an NFC card reader is arranged on the operating platform and connected with the main control board, and the main control board is further used for controlling operation permission according to signals of the NFC card reader.
Beneficial effect is, make the utility model discloses realize the operation of privilege ization, guarantee data safety.
Furthermore, the controller is provided with a wireless charging system, and the operating platform is provided with a wireless charging seat.
The controller has the advantages that the controller can be charged in real time conveniently, and the endurance of the controller is guaranteed.
Furthermore, an operation key group is arranged on the portable suitcase, the operation key group comprises keys and/or knobs, and the operation key group is connected with the main control panel.
Through setting up the operating key group, make things convenient for the staff to come right through the operating key group the utility model discloses carry out work process control, the operating key group is connected with the main control board, and the main control board is used for receiving the action signal that the operating key group transmitted to with action signal transmission to controller. The staff can both through touch screen operation controller, also can be through operation key group operation controller.
Furthermore, the front side, the rear side, the left side and the right side of the portable suitcase are respectively provided with a cover plate, and the cover plates can be detached.
The portable suitcase has the beneficial effects that the portable suitcase is convenient for the disassembly, assembly and maintenance of various components in the portable suitcase.
Furthermore, a positioning module is arranged on the main control panel.
The method has the advantages of being convenient to identify detection places and achieving rapid data acquisition.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a perspective view of the present invention in a first state;
fig. 3 is a front view of the present invention after the cover plate on the front side is removed in the second state;
fig. 4 is a left side view of the present invention in state two;
fig. 5 is a rear view of the present invention after the cover plate on the rear side is removed in the second state;
FIG. 6 is a simplified schematic diagram of the arrangement of the heating film and the heat shield film;
in the figure: 1 power, 11 charge mouthful, 2 diaphragm pumps, 21 diaphragm pump gas outlet, 3 cushion bottles, 31 peristaltic pump, 32 cushion bottle air inlet, 33 cushion bottle gas outlet, 34 the leakage fluid dram, 4 differential pressure formula flowmeters, 41 flowmeter air inlets, 42 flowmeter gas outlets, 5DOAS ultraviolet module, 51 heating film, 52 heat insulating film, 6 electrochemical sensor module, 61 electrochemical sensor module air inlet, 62 electrochemical sensor module gas outlet, 7 main control board, 8 controllers, 81 wireless charging receiver, 9 portable suitcase, 91 operation panel, 92 controller groove, 93 bumps pearl mechanism, 94 NFC card reader, 95 wireless charging seat, 96 apron, 97 button, 98 knob.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In order to ensure the clarity of the drawings, the piping for connection is omitted in the drawings of the specification.
As shown in fig. 1, the portable ultraviolet flue gas analyzer comprises a power supply, a diaphragm pump, a buffer bottle, a differential pressure type flowmeter, a DOAS ultraviolet module, an electrochemical sensor module, a main control board and a controller. The power supply is used for supplying power to the part needing power supply in the components. The diaphragm pump is connected with the buffer bottle, and the buffer bottle is connected with the differential pressure formula flowmeter, and the differential pressure formula flowmeter is connected with the DOAS ultraviolet module, and the DOAS ultraviolet module is connected with the electrochemical sensor module. The measured flue gas flows through the diaphragm pump, the buffer bottle, the differential pressure type flowmeter, the DOAS ultraviolet module and the electrochemical sensor module in sequence.
As shown in fig. 1 to 5, the diaphragm pump 2 includes a diaphragm pump air outlet 21; the buffer bottle 3 comprises a buffer bottle air inlet 32, a buffer bottle air outlet 33 and a buffer bottle liquid outlet 34; the DOAS ultraviolet module 5 comprises a module air inlet and a module air outlet; electrochemical sensor module 6 includes electrochemical sensor module air inlet 61 and electrochemical sensor module air outlet 62. A pipeline is connected between the air outlet 21 of the diaphragm pump and the air inlet 32 of the buffer bottle and is used for connecting the diaphragm pump 2 and the buffer bottle 3. A pipeline is connected between buffer bottle gas outlet 33 and module air inlet 51 for connecting buffer bottle 3 and DOAS ultraviolet module 5. A pipeline is connected between module gas outlet 52 and electrochemical sensor module gas inlet 61 for connecting DOAS ultraviolet module 5 and electrochemical sensor module 6. The detected exhaust gas flows out from the outlet 62 of the electrochemical sensor.
As shown in FIG. 1, an electrochemical sensor module andthe DOAS ultraviolet modules are respectively connected with the main control board and used for measuring SO2、NO、NO2The electrochemical sensor module comprises O2Sensor, CO sensor and CO2Sensor, O2Sensor, CO sensor and CO2The sensor is connected to the gas chamber of an electrochemical sensor module, wherein the CO sensor and the O sensor2The sensor adopts the electrochemical principle, CO2An infrared dispersion method is adopted. The electrochemical sensor module is used for measuring O2、CO、CO2The main control board is in communication connection with the controller.
As shown in FIG. 1, the diaphragm pump extracts the measured gas at a fixed flow rate, so that the gas sequentially passes through the buffer bottle, the differential pressure type flowmeter, the DOAS ultraviolet module and the electrochemical sensor module. Measuring SO by DOAS ultraviolet module2、NO、NO2Concentration of gas, O is measured when the gas passes through the electrochemical sensing module2、CO、CO2The concentration of (c). And the concentration signal is sent to the main control board, and then the main control board is communicated with the controller, so that a measurement result is obtained. The utility model discloses a set up DOAS ultraviolet module, what this module adopted is that difference absorption spectrum method measures SO2、NO、NO2The gas concentration has the advantages of high measurement precision, strong reliability, quick response time and low detection lower limit. O is2、CO、CO2And measuring by adopting an electrochemical sensor module. According to the scheme, the diaphragm pump, the buffer bottle and the differential pressure type flowmeter are arranged, so that the stability and accuracy of flow parameters and air pressure parameters are guaranteed, and the accuracy of measured data is guaranteed. Therefore, the problem that the lower limit of detection of gas concentration is high and the accuracy of a measured value is low in a flue gas analyzer in the prior art is solved.
As shown in fig. 1 to 5, the present invention includes a portable suitcase 9, and a lid plate 96 is provided on each of the front, rear, left, and right sides of the portable suitcase 9, and the lid plate 96 is detachable. The power supply 1 adopts a switch power supply, and the portable suitcase 9 is provided with a power supply port 11 for connecting a power supply charger. Power supply 1, diaphragm pump 2, buffer bottle 3, differential pressure type flowmeter 4, DOAS ultraviolet module 5, electrochemical sensor module 6, main control board 7 and controller 8 are assembled in portable suitcase 9. Through setting up portable suitcase 9 and assembling each part in portable suitcase 9, make the utility model discloses portable, the development of the on-the-spot test work of being convenient for.
As shown in FIG. 3, the utility model discloses a peristaltic pump 31, peristaltic pump 31 are connected with buffer bottle 3, and peristaltic pump 31 is arranged in taking out the liquid in buffer bottle 3. The buffer bottle 3 is provided with a liquid outlet 34, and the peristaltic pump 3 is connected with the liquid outlet 34 through a pipeline. Through setting up peristaltic pump 3, take out liquid and dust, (for example, when gaseous volume changes, have liquid to produce), make the testing process not influenced by moisture and dust, improve the interference killing feature of testing process. Further improving the accuracy of the detection result.
As shown in fig. 1 to 5, the controller 8 is a tablet pc, the portable suitcase 9 is provided with an operation desk 91, the operation desk 91 is provided with a controller slot 92, and the controller 8 is detachably connected to the controller slot 92. This enables the controller to be separated from the portable suitcase, which is convenient for the detection personnel to operate, for example, in the detection process, the portable suitcase 9 is placed on the ground, and the personnel can stand for operation and detection after taking off the controller 8. Be equipped with between controller 8 and the controller groove 92 and touch the pearl lock, touch the pearl lock including touch pearl mechanism 93 and can with touch pearl mechanism complex spring bolt spare, spring bolt spare is connected on the controller and the relative face in bottom of control groove, touches pearl mechanism 93 and sets up in the bottom of controller groove 92, and spring bolt spare is connected with controller 8. Make things convenient for the controller to take off from the controller groove through setting up the lock of bumping the pearl, guarantee that the controller that is arranged in the controller groove is difficult to drop naturally, play certain guard action to the controller. The operation desk 91 is provided with an NFC card reader 94, the NFC card reader 94 is connected with the main control board 7, and the main control board 7 is further configured to control an operation authority according to a signal of the NFC card reader 94. This facilitates the security of data and devices. The controller is provided with a wireless charging system, the wireless charging system comprises a wireless charging receiver 81 positioned on the controller 8, and a wireless charging seat 95 is arranged on the operating platform 91; this is advantageous for improving the endurance of the controller. The front side, the rear side, the left side and the right side of the portable suitcase 9 are respectively provided with a cover plate, and the cover plates can be detached; this can conveniently assemble all kinds of parts to portable suitcase 9 in, also make things convenient for the staff to be right the utility model discloses overhaul. The main control board 7 is provided with a positioning module, which is beneficial to positioning the measuring place and is convenient for rapid data acquisition. The main control board 7 is further provided with various interfaces, such as an interface for connecting the diaphragm pump 2, an interface for connecting the DOAS ultraviolet module 5, an interface for connecting an electric control component of the electrochemical sensor module 6, an interface for connecting the NFC card reader 94, and the like; interfaces of other sensors such as temperature sensors, oxygen sensors, etc.; such as power supply interfaces, power distribution interfaces, etc.
As shown in fig. 5 and 6, the DOAS uv module 5 is simplified to a rectangular cross section in fig. 6 for convenience of illustration. The DOAS ultraviolet module 5 is externally coated with a heating film 51 and a heat insulation film 52. The side close to the DOAS uv module 5 is defined as the inner side, the side far from the DOAS uv module 5 is defined as the outer side, and the heating film 51 is located on the inner side of the heat insulating film. The heating film 51 may be a PI heating film, and the heat insulating film may be an EVA heat insulating film. Through setting up heating film and thermal-insulated membrane, make DOAS ultraviolet module whole journey companion's heat in the course of the work, reduce the influence because of environmental factor causes, further improve measurement accuracy.
As shown in fig. 1 to 3, the portable suitcase 9 is provided with an operation key set, the operation key set includes a key 97 and a knob 98, and the operation key set is connected with the main control board. Through setting up the operating key group, make things convenient for the staff to come right through the operating key group the utility model discloses carry out work process control, the operating key group is connected with the main control board, and the main control board is used for receiving the action signal that the operating key group transmitted, and the main control board is according to the action of each part of this action signal control. When the controller adopted the panel computer, received the damage back when the touch screen function of panel computer, it is right to can organize through the manipulating key the utility model discloses control. If the panel computer human-computer interaction function is normal, the staff both can be right through the panel computer the utility model discloses control, can be right through the manipulating key again the utility model discloses control.
In addition to the above embodiments, the DOAS uv module and the electrochemical sensor module in the above embodiments may be reversed, that is, the gas is first flowed through the electrochemical sensor module and then the gas is flowed through the DOAS uv module.
Claims (10)
1. The portable ultraviolet method flue gas analyzer is characterized by comprising a power supply, a diaphragm pump, a buffer bottle, a differential pressure type flowmeter, a detection module, a main control board and a controller, wherein the diaphragm pump is connected with the buffer bottle, the buffer bottle is connected with the differential pressure type flowmeter, the differential pressure type flowmeter is connected with the detection module, and the detection module comprises a DOAS ultraviolet module and an electrochemical sensor module;
the detected flue gas sequentially flows through the diaphragm pump, the buffer bottle, the differential pressure type flowmeter and the detection module;
the electrochemical sensor module and the DOAS module are respectively connected with the main control board, and the DOAS ultraviolet module is used for measuring SO2、NO、NO2The electrochemical sensor module is used for measuring O2、CO、CO2The main control board is in communication connection with the controller.
2. The portable ultraviolet flue gas analyzer of claim 1, wherein the ultraviolet module is coated with a heating film and a heat insulating film.
3. The portable ultraviolet flue gas analyzer as set forth in claim 1, further comprising a peristaltic pump connected to the buffer bottle, the peristaltic pump being configured to pump liquid out of the buffer bottle.
4. The portable ultraviolet flue gas analyzer of claim 1 further comprising a portable carrying case, wherein the power source, the diaphragm pump, the buffer bottle, the differential pressure flow meter, the DOAS ultraviolet module, the electrochemical sensor module, the main control board, and the controller are assembled in the portable carrying case.
5. The portable ultraviolet flue gas analyzer as claimed in claim 4, wherein the controller is a tablet computer, the portable suitcase is provided with an operating platform, the operating platform is provided with a controller slot, and the controller is detachably connected in the controller slot.
6. The portable ultraviolet flue gas analyzer as set forth in claim 5, wherein a bead lock is provided between the controller and the controller slot.
7. The portable ultraviolet flue gas analyzer as claimed in claim 5, wherein an NFC card reader is arranged on the operating platform, the NFC card reader is connected with the main control board, and the main control board is further used for controlling the operation authority according to signals of the NFC card reader.
8. The portable ultraviolet flue gas analyzer as set forth in claim 5, wherein the controller is provided with a wireless charging system, and the console is provided with a wireless charging stand.
9. The portable ultraviolet flue gas analyzer as claimed in claim 4 or 5, wherein the portable suitcase is provided with an operation key set, the operation key set comprises keys and/or knobs, and the operation key set is connected with the main control panel.
10. The portable ultraviolet flue gas analyzer as claimed in claim 1, wherein a positioning module is arranged on the main control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020488913.3U CN211856351U (en) | 2020-04-07 | 2020-04-07 | Portable ultraviolet method flue gas analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020488913.3U CN211856351U (en) | 2020-04-07 | 2020-04-07 | Portable ultraviolet method flue gas analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211856351U true CN211856351U (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020488913.3U Expired - Fee Related CN211856351U (en) | 2020-04-07 | 2020-04-07 | Portable ultraviolet method flue gas analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211856351U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189269A (en) * | 2020-12-30 | 2021-07-30 | 华南智能机器人创新研究院 | Method and system for automatically testing smoke dust |
-
2020
- 2020-04-07 CN CN202020488913.3U patent/CN211856351U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189269A (en) * | 2020-12-30 | 2021-07-30 | 华南智能机器人创新研究院 | Method and system for automatically testing smoke dust |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201103 |
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| CF01 | Termination of patent right due to non-payment of annual fee |