CN205120442U - Fixed source smoke particulate dilution method sampling system - Google Patents
Fixed source smoke particulate dilution method sampling system Download PDFInfo
- Publication number
- CN205120442U CN205120442U CN201520911788.1U CN201520911788U CN205120442U CN 205120442 U CN205120442 U CN 205120442U CN 201520911788 U CN201520911788 U CN 201520911788U CN 205120442 U CN205120442 U CN 205120442U
- Authority
- CN
- China
- Prior art keywords
- gas
- level
- carrier gas
- dilution
- flue gas
- 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
- 238000005070 sampling Methods 0.000 title claims abstract description 44
- 239000000779 smoke Substances 0.000 title claims abstract description 10
- 238000003113 dilution method Methods 0.000 title claims abstract description 8
- 239000012159 carrier gas Substances 0.000 claims abstract description 72
- 239000003546 flue gas Substances 0.000 claims abstract description 65
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000010790 dilution Methods 0.000 claims abstract description 53
- 239000012895 dilution Substances 0.000 claims abstract description 53
- 239000007789 gas Substances 0.000 claims abstract description 48
- 230000032683 aging Effects 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims description 32
- 239000002245 particle Substances 0.000 claims description 31
- 238000012544 monitoring process Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000007865 diluting Methods 0.000 abstract description 6
- 239000013618 particulate matter Substances 0.000 abstract 3
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000010419 fine particle Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003189 isokinetic effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a fixed source smoke particulate dilution method sampling system, measure part, particulate matter collection part, carrier gas distribution subtotal control section including flue gas velocity, wherein, particulate matter collection part is including the sampling rifle (2 -1), one -level diluting device (2 -4), second grade diluting device (2 -7), flue gas aging room (2 -9) and the flue gas air outlet means (2 -10) that connect gradually, is provided with particulate matter collection system (2 -11) in flue gas air outlet means's (2 -10) gas outlet department, one -level diluting device (2 -4) adopts porous dilution, and second grade diluting device (2 -7) adopts the efflux to dilute. The utility model discloses stability is high, and it is effectual to sample.
Description
Technical field
The utility model belongs to environmental monitoring technology field, relates to a kind of stationary source flue gas particles dilution method sampling system.
Background technology
Current China atmospheric environment outstanding problem, regional gray haze takes place frequently, and causes extensive concern.Gray haze is formed mainly to be increased by fine particle (PM2.5) in air and causes, and the PM2.5 of the fixed combustion source emission based on fire coal is the main source of PM2.5 in air.How rationally to gather particle from fixed combustion source emission, understand its domain size distribution and physicochemical characteristic, for atmospheric pollution source resolution, formulate pollution prevention measure, improve village environment air quality tool is of great significance.
For the collection of fine particle in stationary source flue gas, main employing dilution tunnel method is carried out, the ultimate principle of the method is in dilution tunnel, utilized by high-temperature flue gas pure air to dilute, and be cooled to atmospheric temperature, after staying for some time, fine particle is sampled device and is separated by certain particle size and traps.Its advantage is a cancellation that flue-gas temperature is high, high humidity, fine particle concentration are high and the impact of other gases, the Combustion Source method of sampling is simplified, expand the usable range of filter membrane simultaneously, also simplify and expand the measurement range of chemical species, also make the application of more advanced aerosol measurement device in Combustion Source become possibility simultaneously.
Chinese utility model patent (publication number CN1614385A) relate to a kind of contour tracking fixed source diluting sampling system, comprise sampling head, heating tube, one-level dilution chamber, secondary dilution chamber, chamber, sampling thief, data acquisition unit etc., because it adopts inverted U to design, and chamber design volume is larger, make equipment set more complicated and huge, and many stationary source sampling locations narrow space, limit it and use on a large scale.
In sum, the diluting and sampling system for particle developed sampling system miniaturization, be suitable for rig-site utilization is necessary.
Utility model content
For defect and the deficiency of existing stationary combustion source particle sampling system, the utility model provides a kind of stationary source flue gas particles dilution method sampling system, and adopt two-stage dilution device, the former adopts porous to dilute, and the latter adopts jet to dilute.The technical solution of the utility model is as follows:
A kind of stationary source flue gas particles dilution method sampling system, comprises flue gas flow rate measure portion, particle collecting part, carrier gas distribution part and control section, it is characterized in that,
Described flue gas flow rate measure portion comprises pitot tube (1-1) and gas pressure difference transmitter (1-2), gas differential pressure transmitter (1-2) is for measuring the flue gas flow rate of the sampled point guided by pitot tube, and its transmitting measured values is to control section;
Described particle collecting part comprises the sampling gun (2-1), one-level air mix facilities (2-4), secondary air mix facilities (2-7), flue gas aging chamber (2-9) and the flue gas air-out apparatus (2-10) that connect successively, and the gas outlet place of flue gas air-out apparatus (2-10) is provided with particle harvester (2-11); The flue gas of discharge is sampled by sampling gun in flue, through one-level dilution, secondary dilution, stop aging after by particle harvester collection particle wherein; Gas Flowmeter (2-3) is provided with, by sampling air flow speed real-time Transmission to control section in sampling gun; Described one-level air mix facilities (2-4) adopts porous to dilute, and described secondary air mix facilities (2-7) adopts jet to dilute;
Described carrier gas distribution part, comprise air compression plant (3-1), gas-holder (3-2) and gas diverter (3-3), the pressurized air discharged from gas-holder (3-2) is divided into two-way through gas diverter (3-3), one tunnel is one-level carrier gas, another road is secondary carrier gas, and one-level carrier gas leads to one-level air mix facilities (2-4) after being heated to be hot carrier gas by carrier gas well heater (4-4);
The all parts comprising sampling gun, one-level air mix facilities, secondary air mix facilities and flue gas aging chamber is fixed with gas temperature hygrometer and gas pressure sensor Real-Time Monitoring smoke behavior everywhere, and each Monitoring Data is admitted to control section;
Described one-level air mix facilities (2-4) comprises one-level dilution exocoel (2-41), one-level dilution inner chamber (2-42), and one-level dilution inner chamber (2-42) offers dilution holes (2-43); One-level carrier gas dilutes exocoel (2-41) along one-level and enters dilution inner chamber by dilution holes (2-43), and dilution holes is designed to conical apertures, and the basal diameter near dilution exocoel is greater than the basal diameter near dilution inner chamber.
Described control section, can comprise data processor (4-1), one-level carrier gas mass flow controller (4-2), secondary carrier gas mass flow controller (4-3) and carrier gas well heater (4-4); The flow of one-level carrier gas and secondary carrier gas and flow velocity are controlled by one-level carrier gas mass flow controller (4-2) and secondary carrier gas mass flow controller (4-3) respectively.
The beneficial effects of the utility model are:
1) two-stage dilution independently controls, and system stability is high;
2) system adopts linear pattern design, compact conformation, modularization, easy and simple to handle;
3) one-level diluents is by entering transmission line along the aperture that transmission line distributes, and makes dilution more even.
Accompanying drawing explanation
The stationary source flue gas particles dilution method sampling system schematic diagram that Fig. 1 provides for the utility model.
In figure: 1-flue gas flow rate measure portion; 2-particle collecting part; 3-carrier gas distribution part; 4-control section.
1-1-pitot tube; 1-2-gas differential pressure transmitter; 2-1-sampling gun; 2-2-gas temperature hygrometer; 2-3-Gas Flowmeter; 2-4-one-level air mix facilities; 2-5-gas pressure sensor; The import of 2-6-one-level carrier gas; 2-7-secondary air mix facilities; The import of 2-8-secondary carrier gas; 2-9-flue gas aging chamber; 2-10-flue gas air-out apparatus; 2-11-particle harvester; 3-1-air compression plant; 3-2-gas-holder; 3-3-gas diverter; 4-1-data processor; 4-2-one-level carrier gas mass flow controller; 4-3-secondary carrier gas mass flow controller; 4-4-carrier gas well heater.
Fig. 2 is the schematic diagram of the one-level air mix facilities adopting porous dilution mode.
In figure: 2-2-gas temperature hygrometer; 2-41 one-level dilution exocoel, 2-42 one-level dilution inner chamber; 2-43 dilution holes; 2-5-gas pressure sensor; The import of 2-6-one-level carrier gas; Arrow represents airflow direction.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Particle acquisition system of the present utility model comprises flue gas flow rate measure portion, particle collecting part and control section.
Flue gas flow rate measure portion comprises pitot tube (1-1) and gas pressure difference transmitter (1-2), gas differential pressure transmitter (1-2) is for measuring the flue gas flow rate of the sampled point guided by pitot tube, and its transmitting measured values is to the data processor (4-1) of control section;
Particle collecting part comprises the sampling gun (2-1), one-level air mix facilities (2-4), secondary air mix facilities (2-7), flue gas aging chamber (2-9) and the flue gas air-out apparatus (2-10) that connect successively, and the gas outlet place of flue gas air-out apparatus (2-10) is provided with particle harvester (2-11); The flue gas of discharge is sampled by sampling gun in flue, through one-level dilution, secondary dilution, stop aging after by particle harvester collection particle wherein; Gas Flowmeter (2-3) is provided with, by sampling air flow speed real-time Transmission to data processor (4-1) in sampling gun; One-level air mix facilities (2-4) adopts porous to dilute, and secondary air mix facilities (2-7) adopts jet to dilute;
Carrier gas distribution part, comprises air compression plant (3-1), gas-holder (3-2) and gas diverter (3-3);
The all parts comprising sampling gun, one-level air mix facilities, secondary air mix facilities and flue gas aging chamber is fixed with gas temperature hygrometer and gas pressure sensor Real-Time Monitoring smoke behavior everywhere, and each Monitoring Data is admitted to data processor (4-1);
Control section, comprises data processor (4-1), one-level carrier gas mass flow controller (4-2), secondary carrier gas mass flow controller (4-3) and carrier gas well heater (4-4); The pressurized air discharged from gas-holder (3-2) is divided into two-way through gas diverter (3-3), one tunnel is one-level carrier gas, another road is secondary carrier gas, its flow and flow velocity are controlled by one-level carrier gas mass flow controller (4-2) and secondary carrier gas mass flow controller (4-3) respectively, and wherein one-level carrier gas is heated to be hot carrier gas by carrier gas well heater (4-4);
See Fig. 2, one-level air mix facilities (2-4) comprises one-level dilution exocoel (2-41), one-level dilution inner chamber (2-42), and one-level dilution inner chamber (2-42) offers dilution holes (2-43); One-level carrier gas dilutes exocoel (2-41) along one-level and enters dilution inner chamber by dilution holes (2-43), the dilution effect of flue gas is controlled by the flow and temperature changing carrier gas, realize one-level combination gas humidity and temperature adjustable, dilution holes is designed to conical apertures, and the basal diameter near dilution exocoel is greater than the basal diameter near dilution inner chamber;
Data processor (4-1), for receiving the smoke behavior information from monitoring everywhere, and control gas diverter (3-3), one-level carrier gas mass flow controller (4-2) and secondary carrier gas mass flow controller (4-3).
Before preparing sampling, each parts are assembled according to accompanying drawing, checks whether each parts have exception.
Pitot tube (1-1) is first placed in sample, measures flue gas mean flow rate in flue before using by system, and according to the upper size of installing sample nozzle of the flow velocity determination sampling gun (2-1) measured; Use humiture and the water capacity of portable gas humiture dew point hygrometer test flue gas, and determine the heating-up temperature of sampling gun, general heating-up temperature is 120 DEG C.
2 requirements below system should meet when particle gathers simultaneously: one is that flue gas in flue gas aging chamber (2-9) meets collection requirement; Two is the samplings of overall process automatic constant speed.System in use, first realizes flue gas and meets collection requirement.Flue gas after two-stage dilution stops 10-15 second in flue gas aging chamber (2-9), whether meet particle by the condition adjudgement observing flue gas in aging chamber and gather requirement, if meet collection requirement, illustrate that total dilution ratio is rational, namely the air inlet total amount of one-level carrier gas and secondary carrier gas is rational.Secondly, in the rational scope of guarantee air inlet total amount, one-level dilution and secondary dilution air inflow are redistributed, realizes isokinetic sampling.Concrete operations are as follows:
Pitot tube (1-1) and sampling gun (2-1) are placed in sampled point in the lump, sampling gun are heated simultaneously; Open carrier gas distribution part, air compression plant (3-1) works, and gas-holder (3-2) interior gaseous tension remains on 8-10MPa, and gas diverter (3-3) controls air inlet total amount and is divided into two by pressurized air; Open control section, one-level carrier gas mass flow controller (4-2) and secondary carrier gas mass flow controller (4-3) are started working, and heat one-level carrier gas simultaneously; Now, the gas temperature hygrometer (2-2) on one-level air mix facilities (2-4), secondary air mix facilities (2-7), flue gas aging chamber (2-9) and the smoke behavior in each device of gas pressure sensor (2-5) Real-Time Monitoring transfer to data processor (4-1).Data processor (4-1) controls gas diverter (3-3) and regulates until meet collection requirement according to the smoke behavior in flue gas aging chamber (2-9) to carrier gas total amount, receive flue gas flow rate V1 that pitot tube (1-1) records and the extraction velocity of flue gas V2 that Gas Flowmeter (2-3) records simultaneously, and by controlling secondary carrier gas mass flow controller (4-3), regulate secondary carrier gas flow and flow velocity.
When the flue gas in flue gas aging chamber (2-9) meet collection require time, one-level carrier gas and secondary carrier gas air inlet total amount reasonable, under the prerequisite that air inlet total amount is constant, one-level carrier gas mass flow controller (4-2) and secondary carrier gas mass flow controller (4-3) adjust simultaneously, until the speed of evacuation that Gas Flowmeter (2-3) records is equal with flue gas flow rate in flue.One-level carrier gas mass flow controller (4-2) and secondary carrier gas mass flow controller (4-3) response time are less than 1 second, can guarantee the real-time adjusted, and increase the stability of system.
If the flue gas in flue gas aging chamber (2-9) does not meet collection requirement, air inlet insufficient total amount is described, now preferentially increases the air demand of one-level carrier gas, until meet collection requirement.
After above-mentioned adjustment completes, open particle harvester (2-11), carry out particulate cascade collection.Flue gas air-out apparatus (2-10) is designed to six gas outlets, must ensure that at least one communicates with atmospheric environment during sampling, and total flow that gathers must not exceed the total amount extracting flue gas and two-stage dilution gas.
Principle of work of the present utility model is:
1) Real-Time Monitoring smoke behavior.By gas temperature hygrometer (2-2) that sampling gun, one-level air mix facilities, secondary air mix facilities, flue gas aging chamber are installed and gas pressure sensor (2-5) Real-Time Monitoring smoke behavior, until the flue gas in flue gas aging chamber (2-9) meets collection requirement.
2) dehumidifying and cooling are responsible in one-level dilution, and secondary dilution is responsible for controlling the speed of evacuation.The dehumidifying of one-level air mix facilities (2-4) primary responsibility flue gas and cooling, collection requirement whether is met according to the gas in flue gas aging chamber (2-9), regulate the flow of one-level carrier gas, and by carrier gas well heater (4-4), carrier gas is heated; Secondary air mix facilities adopts ejector, regulates jet gas velocity by it, and then controls the speed of evacuation, makes V1=V2, realizes isokinetic sampling.
Claims (2)
1. a stationary source flue gas particles dilution method sampling system, comprises flue gas flow rate measure portion, particle collecting part, carrier gas distribution part and control section, it is characterized in that,
Described flue gas flow rate measure portion comprises pitot tube (1-1) and gas pressure difference transmitter (1-2), gas differential pressure transmitter (1-2) is for measuring the flue gas flow rate of the sampled point guided by pitot tube, and its transmitting measured values is to control section;
Described particle collecting part comprises the sampling gun (2-1), one-level air mix facilities (2-4), secondary air mix facilities (2-7), flue gas aging chamber (2-9) and the flue gas air-out apparatus (2-10) that connect successively, and the gas outlet place of flue gas air-out apparatus (2-10) is provided with particle harvester (2-11); The flue gas of discharge is sampled by sampling gun in flue, through one-level dilution, secondary dilution, stop aging after by particle harvester collection particle wherein; Gas Flowmeter (2-3) is provided with, by sampling air flow speed real-time Transmission to control section in sampling gun; Described one-level air mix facilities (2-4) adopts porous to dilute, and described secondary air mix facilities (2-7) adopts jet to dilute;
Described carrier gas distribution part, comprise air compression plant (3-1), gas-holder (3-2) and gas diverter (3-3), the pressurized air discharged from gas-holder (3-2) is divided into two-way through gas diverter (3-3), one tunnel is one-level carrier gas, another road is secondary carrier gas, and one-level carrier gas leads to one-level air mix facilities (2-4) after being heated to be hot carrier gas by carrier gas well heater (4-4);
The all parts comprising sampling gun, one-level air mix facilities, secondary air mix facilities and flue gas aging chamber is fixed with gas temperature hygrometer and gas pressure sensor Real-Time Monitoring smoke behavior everywhere, and each Monitoring Data is admitted to control section;
Described one-level air mix facilities (2-4) comprises one-level dilution exocoel (2-41), one-level dilution inner chamber (2-42), and one-level dilution inner chamber (2-42) offers dilution holes (2-43); One-level carrier gas dilutes exocoel (2-41) along one-level and enters dilution inner chamber by dilution holes (2-43), and dilution holes is designed to conical apertures, and the basal diameter near dilution exocoel is greater than the basal diameter near dilution inner chamber.
2. sampling system according to claim 1, it is characterized in that, described control section, comprises data processor (4-1), one-level carrier gas mass flow controller (4-2), secondary carrier gas mass flow controller (4-3) and carrier gas well heater (4-4); The flow of one-level carrier gas and secondary carrier gas and flow velocity are controlled by one-level carrier gas mass flow controller (4-2) and secondary carrier gas mass flow controller (4-3) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520911788.1U CN205120442U (en) | 2015-11-16 | 2015-11-16 | Fixed source smoke particulate dilution method sampling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520911788.1U CN205120442U (en) | 2015-11-16 | 2015-11-16 | Fixed source smoke particulate dilution method sampling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205120442U true CN205120442U (en) | 2016-03-30 |
Family
ID=55576038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520911788.1U Expired - Fee Related CN205120442U (en) | 2015-11-16 | 2015-11-16 | Fixed source smoke particulate dilution method sampling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205120442U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482987A (en) * | 2016-10-13 | 2017-03-08 | 福建农林大学 | A kind of sampling system of biomass combustion |
| CN109541122A (en) * | 2018-11-06 | 2019-03-29 | 山西大学 | A kind of apparatus and method for observing biomass combustion flue gas ageing process |
| CN109541121A (en) * | 2018-11-06 | 2019-03-29 | 山西大学 | The method that biomass combustion generates the device of flue gas and observes flue gas ageing process |
-
2015
- 2015-11-16 CN CN201520911788.1U patent/CN205120442U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482987A (en) * | 2016-10-13 | 2017-03-08 | 福建农林大学 | A kind of sampling system of biomass combustion |
| CN109541122A (en) * | 2018-11-06 | 2019-03-29 | 山西大学 | A kind of apparatus and method for observing biomass combustion flue gas ageing process |
| CN109541121A (en) * | 2018-11-06 | 2019-03-29 | 山西大学 | The method that biomass combustion generates the device of flue gas and observes flue gas ageing process |
| CN109541122B (en) * | 2018-11-06 | 2023-09-29 | 山西大学 | Device and method for observing aging process of biomass combustion flue gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105223046A (en) | Stationary source flue gas particles dilution method automatic constant speed acquisition method | |
| CN106525520B (en) | Dilution multi-stage sampling device for flue gas mixing channel of fixed combustion source | |
| CN205120434U (en) | Fixed source smoke particulate two -stage dilution method sampling system | |
| CN103091134B (en) | Stationary source particle and volatile organic matter diluting and sampling system and the method for sampling | |
| CN105223047A (en) | Stationary source flue gas particles dilution method automatic constant speed acquisition system | |
| CN205157267U (en) | Porous diluting device of smoke particulate | |
| CN104075913B (en) | A kind of fixed-contamination source emission PM2.5 dilution sampling device | |
| CN201322745Y (en) | Testing device for testing volatile organic matter | |
| CN100395533C (en) | Diluting and sampling system for particle from fixed combustion source emission | |
| CN108507918B (en) | Device and method for on-line monitoring concentration of ultralow-emission flue gas particles | |
| CN109737898B (en) | System for realizing online test of high-temperature corrosion of water-cooled wall | |
| CN104457852A (en) | On-line monitoring system for greenhouse gas emission of fixed combustion source | |
| CN104198227A (en) | Catering source particulate matter and volatile organic compound sampling system | |
| CN206020262U (en) | A kind of continuous on-line monitoring system of CEMS flue gases | |
| CN206020318U (en) | A kind of gas dew point analytical equipment | |
| CN205120442U (en) | Fixed source smoke particulate dilution method sampling system | |
| CN103645127A (en) | Back flushing type real-time online monitoring system for smoke pollutants | |
| CN104677696B (en) | A kind of isokinetic sampling's rifle | |
| CN203929555U (en) | A kind of high precision fine particle density monitoring system | |
| CN206057142U (en) | A kind of super low concentration wet flue gas flue dust on-line measurement device | |
| CN104677700B (en) | The sampling system that fine particle gathers a kind of flue gas containing drop suitable for stationary source | |
| CN204241286U (en) | Flue gas constant speed constant-flow sampling device | |
| CN205120433U (en) | Smoke particulate dilution method sampling device | |
| CN204694486U (en) | Heavy duty detergent air conditioning filter performance detecting system | |
| CN204679877U (en) | Pollution source VOC concentration and total emission volumn real-time monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160330 |