CN206205867U - A kind of Based Intelligent Control energy-conservation flood pattern - Google Patents
A kind of Based Intelligent Control energy-conservation flood pattern Download PDFInfo
- Publication number
- CN206205867U CN206205867U CN201621132817.5U CN201621132817U CN206205867U CN 206205867 U CN206205867 U CN 206205867U CN 201621132817 U CN201621132817 U CN 201621132817U CN 206205867 U CN206205867 U CN 206205867U
- Authority
- CN
- China
- Prior art keywords
- contactor
- input
- cable
- output
- output end
- 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
- 238000004134 energy conservation Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052802 copper Inorganic materials 0.000 claims abstract description 25
- 239000010949 copper Substances 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 239000003999 initiator Substances 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000009826 distribution Methods 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 abstract description 15
- 239000007924 injection Substances 0.000 abstract description 15
- 239000003208 petroleum Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 19
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Abstract
The utility model is related to a kind of Based Intelligent Control energy-conservation flood pattern, which solve existing Water Injection Efficiency low, power consumption is high, the technical problem of complex operation, it includes frequency converter, soft initiator, water injecting pump main motor, main motor cooling blower, Switching Power Supply, breaker of plastic casing, miniature circuit breaker, power frequency exports A.C. contactor, frequency conversion exports A.C. contactor, it is soft to open bypass A.C. contactor, blower fan enables A.C. contactor, first electrothermal relay and the second electrothermal relay, breaker of plastic casing input connects transformer or power distribution cabinet, breaker of plastic casing output end accesses inverter input and soft initiator input by cable or copper bar and soft opening bypasses A.C. contactor input, inverter output terminal is connected with frequency conversion output A.C. contactor input, frequency conversion output A.C. contactor output end is connected with water injecting pump main motor.The utility model is widely used in petroleum chemical industry.
Description
Technical field
The utility model is related to a kind of oil field flood pattern, more particularly, to a kind of Based Intelligent Control energy-conservation flood pattern.
Background technology
Water flooding is a kind of important way of China's onshore oil field exploitation, and it can effectively supplement stratum energy,
Oil recovery factor is improved, is an important means of oil high and stable yields, there is very important status in crude oil production.So
And, the power consumption of flood pattern is huge, accounts for the half of China's oil field productive power.It is upper with oil field composite water cut
Rise, water injecting consumption will also steeply rise.And, existing flood pattern is commonly artificial operation, when system performance changes
When, it is impossible to change the working condition of flood pattern in time, increase energy consumption, cause very big energy loss.Therefore as early as possible as early as possible
The automatic energy-saving technology of oil field flood pattern is developed, is significant in oil field energy saving consumption reduction work.
Water injecting pump is not supported that directly band is carried generally and is started.The replacing of the regular maintenance or consumable accessory of water injecting pump is, it is necessary to often
Carry out (stop) pump operated, directly can not carry pump by band because pressure is higher, it is necessary to switch flow back and forth, opening return valve is unloaded
After could start, it is frequent so as to cause return valve to damage；Labor intensive, waste energy consumption, start-stop are complicated, and to operating personnel
Bring certain potential safety hazard；Each oil producing operation area water filling scene in oil field, water injecting pump is generally using soft control, constant pressure or constant current
Water filling needs manual adjustment return valve, and so as to cause, labor intensive, energy consumption waste big, and pressure precision is poor, and pressure regulation difficulty is big.
Oil field is a complex object, and one of most important of which characteristic, is exactly time variation, in recovery process, stratum
It is to flushing that energy constantly decays to holding stratum energy balance usual manner.The height of water injection pressure is to determine that oil field is closed
Reason exploitation and the important parameter of surface line and relevant device, especially in later development, water injection well increases, water injection technology is designed
Configure well-to-do with electromechanical equipment, geological condition changes greatly, opens the increase and decrease well-flushing and the shadow of insufficient water of simultaneously well number in addition
Ring, often cause water injection pressure to fluctuate, water injection rate is uneven and stable.Its consequence is that water injection rate can not meet when pressure is low
The need for oil development, formation pressure is necessarily caused to decline the too high waste energy of water injection pressure, the result of super note causes water logging water
Alter.Water injection pressure control is improper will to bring many troubles to oil field production and management, therefore oil field requires constant pressure water flooding.But by
Constantly changed in the pressure and oil and gas and water distribution on oil storage stratum, its numerical value is difficult Accurate Prediction, thus is also just difficult to control
System.Due to reasons such as history and technologies, in order to meet oil field development the need for, using the big scheme of safety factor, i.e., in technique
And electromechanical equipment, configuration on all according to the Demand Design of oil field maximum possible, particularly in flood pattern equipment particularly dash forward
Go out.High power motor is matched using high-pressure plunger pump more than oilfield water injection equipment, flood pattern is often " the big horse in inefficiency
Draw dolly " state operation, the significant wastage of electric energy is caused, energy loss is up to more than 50%.Additionally, control device falls behind, note
Water pressure is controlled manually by pumping out port strobe, and pump matches with motor and is difficult to reach the optimal working point operation in pump.
The content of the invention
Existing Water Injection Efficiency is low, power consumption is high, complex operation technical problem in order to solve for the utility model, there is provided
The low Based Intelligent Control energy-conservation flood pattern of a kind of efficiency high, power consumption.
The Based Intelligent Control energy-conservation flood pattern that the utility model is provided, including the main electricity of frequency converter, soft initiator, water injecting pump
Machine, main motor cooling blower, Switching Power Supply, breaker of plastic casing, miniature circuit breaker, power frequency output A.C. contactor, frequency conversion output
A.C. contactor, the soft bypass A.C. contactor, blower fan of opening enable A.C. contactor, the first electrothermal relay and the second electrothermal relay,
Breaker of plastic casing input connects transformer or power distribution cabinet, and breaker of plastic casing output end accesses frequency converter by cable or copper bar
Input and soft initiator input and soft opening bypass A.C. contactor input；
The external direct current reactor of frequency converter, inverter output terminal accesses frequency conversion and exports ac contactor by cable or copper bar
Device input, frequency conversion output A.C. contactor output end accesses the input of output reactance device, output by cable or copper bar
The output end of reactor accesses the input terminal of water injecting pump main motor by cable or copper bar；
The soft bypass A.C. contactor lead-out terminal that opens is connected by copper bar or cable with the first electrothermal relay input, and first
Electrothermal relay output end copper bar or cable are in parallel with soft initiator output end, access power frequency output after parallel connection with copper bar or cable
A.C. contactor, power frequency output A.C. contactor output end copper bar or cable are in parallel with frequency conversion output A.C. contactor to access note
The input terminal of water pump main motor；
Breaker of plastic casing output end accesses miniature circuit breaker by cable, and miniature circuit breaker output end accesses blower fan with cable
A.C. contactor input is enabled, blower fan enables A.C. contactor output end and is connected with the second electrothermal relay input, the second heat
Relay output end accesses main motor cooling blower with cable；
Breaker of plastic casing output end accesses AC220V power supplys to the input of Switching Power Supply by cable, Switching Power Supply
Lead-out terminal exports DC24V to PLC；The output end of PLC is connected with frequency converter.
Preferably, breaker of plastic casing output end is connected with lightning protection device.
The beneficial effects of the utility model are that the power consumption of water injecting pump can be not only reduced using the system, idle work(is reduced
Rate, the smooth startup of optimal water injection pump and stopped process, are that system with overcurrent, overvoltage, overload, overheat, short circuit, phase shortage etc. are protected
Shield, improves power factor, the service life of extension device, the power supply capacity of increase power network of motor, realizes that the increase-volume of power network changes
Make, by system integration technologies such as controller, the man-machine, communications of HMI, so as to realize energy-conservation, synergy automation, the intelligence of injection pipe network
Energyization, visualization operation.
Using PLC and touch screen technology Based Intelligent Control frequency converter, realize that the frequency of frequency converter changes the rotating speed of controlled motor,
And change the outlet pressure and flow of water injecting pump.Experiment proves Based Intelligent Control energy-conservation Energy-saving Run For Water Injection consumption reduction effect is significant.Intelligence
Energy-conservation flood pattern can be controlled the characteristics of there is economical and effective and very strong practicality.Under frequency conversion auto state, equipment is led to
Cross microcomputer (PLC) detection pressure or flow sensor signal and computing is carried out according to the parameter of setting, with reference to the work of water injecting pump
Situation, the automatically operation to water injecting pump is adjusted, so that water injection pressure or stability of flow, reliability, and can reach well
Energy-conservation purpose.
The utility model further feature, by the description of detailed description below, is clearly stated that.
Brief description of the drawings
Fig. 1 is the schematic diagram of primary circuit；
Fig. 2 is the schematic diagram of secondary circuit；
Fig. 3 is the man-machine interface schematic diagram of operating unit.
Symbol description in figure：
1. frequency converter, 2. soft initiator, 3. lightning protection device, 4. water injecting pump main motor, 5. main motor cooling blower, 6. switchs electricity
Source, QF1 represents breaker of plastic casing, and QF2 represents miniature circuit breaker, and TA represents current transformer, and KM1 represents that power frequency output exchange connects
Tentaculum, KM2 represents that frequency conversion exports A.C. contactor, and KM3 represents soft and opens bypass A.C. contactor, and KM4 represents that blower fan enables exchange
Contactor, FR1 represents the first electrothermal relay, and FR2 represents the second electrothermal relay.
Specific embodiment
As illustrated in fig. 1 and 2, Based Intelligent Control energy-conservation flood pattern includes primary circuit and secondary circuit, and primary circuit includes
Power subsystem, frequency conversion side unit, power frequency side unit, motor cooling blower unit.Secondary circuit includes that power subsystem, control are single
Unit.
First, primary circuit is as follows：
1st, power subsystem：
Breaker of plastic casing QF1 inputs are accessed with cable from transformer or power distribution cabinet, in breaker of plastic casing QF1 output ends
Access lightning protection device 3.The input of frequency converter 1 and soft initiator 2 are accessed by cable or copper bar from breaker of plastic casing QF1 output ends
Input and soft opening bypass A.C. contactor KM3 inputs.
2nd, frequency conversion side unit：
The external direct current reactor terminal of frequency converter 1 accesses direct current reactor, and the output end of frequency converter 1 passes through cable or copper bar
Frequency conversion output A.C. contactor KM2 inputs are accessed, frequency conversion output A.C. contactor KM2 output ends are connect by cable or copper bar
Enter the input of output reactance device, the output end of output reactance device accesses the defeated of water injecting pump main motor 4 by cable or copper bar
Enter terminal.
3rd, power frequency side unit：
The soft bypass A.C. contactor KM3 lead-out terminals that open are connected by copper bar or cable and the first electrothermal relay FR1 inputs
Connect, the first electrothermal relay FR1 output ends copper bar or cable are in parallel with the output end of soft initiator 2, copper bar or cable are used after parallel connection
Power frequency output A.C. contactor KM1 is accessed, power frequency output A.C. contactor KM1 output ends copper bar or cable are exported with frequency conversion and handed over
The stream contactor KM2 input terminals for accessing water injecting pump main motor 4 in parallel.
4th, motor cooling blower unit：
Miniature circuit breaker QF2 is accessed by cable from breaker of plastic casing QF1 output ends, miniature circuit breaker QF2 output ends are used
Cable accesses blower fan and enables A.C. contactor KM4 inputs, and blower fan enables A.C. contactor KM4 output ends and the second electrothermal relay
FR2 inputs are connected, and the second electrothermal relay FR2 output ends are accessed on the input terminal of main motor cooling blower 5 with cable.
2nd, secondary circuit is as follows：
Power subsystem：AC220V power supplys to the defeated of Switching Power Supply 6 are accessed by cable from breaker of plastic casing QF1 output ends
Enter end, the lead-out terminal of Switching Power Supply 6 exports DC24V to connecting terminal block input, and connecting terminal block output end is by electricity
Cable accesses PLC.The output end of PLC is connected with frequency converter 1.
Control unit is divided into power frequency pattern and variable mode again when working, between the two with shield lock function.Variable mode
It is divided into again automatically and manually, equally there is shield lock function between the two.
The course of work is described below：
As shown in figure 3, Based Intelligent Control energy-conservation flood pattern is under normal circumstances, on operating unit control panel, " become
Frequently/power frequency " switching switch selection " frequency conversion " pattern.
" automatic/hand " switching switch selection " automatic " pattern." automatic " pattern, is divided into long-range and local again." long-range/
Locally " change-over switch selection " local ", gives on man-machine interface (touch-screen) operation screen on operating unit control panel
One pressure or flow value, this value are sent to PLC by man-machine interface RS485 interface signal cables." long-range/
Locally " change-over switch selection " long-range ", gives a pressure or flow value on long-range host computer, and this value is by host computer
TCP interface ends are sent to PLC by EPA.PLC receives set-point, when pressing " RUN " button
When, signal is connected RS485 interface ends by the CPU of PLC by PID control process by the RS485 interface ends signal cable of PLC
It is sent in frequency converter 1, frequency converter 1 exports certain voltage to frequency to water injecting pump main motor 4, and water injecting pump main motor 4 drives note
Water pump, water filling pump discharge pressure or flow are transmitted on connecting terminal block input by transducer signal line, and connecting terminal block is defeated
Go out the RS485 interface ends that end is sent to PLC Analog input mModule or PLC by signal cable, PLC controls
The CPU of device processes return signal and set-point by PID arithmetic, and output frequency value is connect by the RS485 of PLC
Mouth end signal cable connection RS485 interface ends are sent in frequency converter 1, so repeatedly, untill the set-point of stabilization is reached.
" automatic/hand " switching switch selection " manual " pattern, the man-machine interface on operating unit control panel (is touched
Screen) frequency values are given on operation screen, this value is sent to PLC controls by man-machine interface RS485 interface signal cables
Device processed, connects RS485 interface ends and is sent in frequency converter 1 by PLC by RS485 interface ends signal cable, frequency converter 1
Output given frequency voltage sends water injecting pump main motor 4 to, and water injecting pump main motor 4 drives water filling pump operation.Until press " stopping
Only " button, end signal is controlled by signal cable to 1# A.C. contactors, power frequency is exported A.C. contactor KM1 and is disconnected, while
The control end of frequency converter 1 receives stop signal, and frequency converter 1 is out of service, and water injecting pump main motor 4 is powered off, and water injecting pump is out of service.
When frequency converter maintenance or failure, on operating unit control panel, " frequency conversion/power frequency " switching switch
Selection " power frequency " pattern, simultaneity factor provides warning prompt frequency converter failure etc..When " RUN " button is pressed, run signal is passed
Be sent on connecting terminal block input, then from connecting terminal block output end by signal cable be sent to soft initiator 2 control it is defeated
Enter end, soft initiator 2 receives enabling signal, and soft initiator 2 runs, and sends voltage to water injecting pump main motor 4, water injecting pump master
Motor 4 drives water filling pump operation, and after water injecting pump operates steadily, the control end of soft initiator 2 opens bypass friendship by signal cable to soft
Stream contactor KM3 control end signals, turn on the soft bypass A.C. contactor KM3 that opens, and voltage is transmitted into water injecting pump main motor 4, note
Water pump main motor 4 drives water filling pump operation, water injecting pump even running.Until " stopping " button is pressed, by signal cable to change
Frequency output A.C. contactor KM2, the soft bypass A.C. contactor KM3 A.C. contactors that open control end signal and soft initiator 2 to control
End receives stop signal, makes the output A.C. contactor KM2 with frequency conversion out of service of soft initiator 2, soft opens bypass A.C. contactor
KM3 is disconnected, and water injecting pump main motor 4 is powered off, and water injecting pump is out of service.
The above only to preferred embodiment of the present utility model, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is every in claim of the present utility model
In the range of restriction, any modification, equivalent substitution and improvements done etc. all should be within protection domain of the present utility model.
Claims (2)
1. a kind of Based Intelligent Control energy-conservation flood pattern, it is characterised in that including frequency converter, soft initiator, water injecting pump main motor, master
Motor cooling blower, Switching Power Supply, breaker of plastic casing, miniature circuit breaker, power frequency output A.C. contactor, frequency conversion output exchange connect
Tentaculum, the soft bypass A.C. contactor, blower fan of opening enable A.C. contactor, the first electrothermal relay and the second electrothermal relay, and plastic housing is broken
Road device input connection transformer or power distribution cabinet, breaker of plastic casing output end access inverter input by cable or copper bar
A.C. contactor input is bypassed with soft initiator input and soft opening；
The external direct current reactor of frequency converter, inverter output terminal accesses frequency conversion and exports ac contactor by cable or copper bar
Device input, frequency conversion output A.C. contactor output end accesses the input of output reactance device, output by cable or copper bar
The output end of reactor accesses the input terminal of water injecting pump main motor by cable or copper bar；
The soft bypass A.C. contactor lead-out terminal that opens is connected by copper bar or cable with the first electrothermal relay input, and first
Electrothermal relay output end copper bar or cable are in parallel with soft initiator output end, access power frequency output after parallel connection with copper bar or cable
A.C. contactor, power frequency output A.C. contactor output end copper bar or cable are in parallel with frequency conversion output A.C. contactor to access note
The input terminal of water pump main motor；
Breaker of plastic casing output end accesses miniature circuit breaker by cable, and miniature circuit breaker output end accesses blower fan enable with cable
A.C. contactor input, blower fan enables A.C. contactor output end and is connected with the second electrothermal relay input, the second hot relay
Device output end accesses main motor cooling blower with cable；
Breaker of plastic casing output end accesses AC220V power supplys to the input of Switching Power Supply, the output of Switching Power Supply by cable
Terminal exports DC24V to PLC；The output end of PLC is connected with frequency converter.
2. Based Intelligent Control energy-conservation flood pattern according to claim 1, it is characterised in that the breaker of plastic casing output end
It is connected with lightning protection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621132817.5U CN206205867U (en) | 2016-10-18 | 2016-10-18 | A kind of Based Intelligent Control energy-conservation flood pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621132817.5U CN206205867U (en) | 2016-10-18 | 2016-10-18 | A kind of Based Intelligent Control energy-conservation flood pattern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206205867U true CN206205867U (en) | 2017-05-31 |
Family
ID=58756981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621132817.5U Expired - Fee Related CN206205867U (en) | 2016-10-18 | 2016-10-18 | A kind of Based Intelligent Control energy-conservation flood pattern |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206205867U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956458A (en) * | 2016-10-18 | 2018-04-24 | 陕西吉特安全科技有限公司 | A kind of energy saving flood pattern of intelligent control |
-
2016
- 2016-10-18 CN CN201621132817.5U patent/CN206205867U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956458A (en) * | 2016-10-18 | 2018-04-24 | 陕西吉特安全科技有限公司 | A kind of energy saving flood pattern of intelligent control |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206226342U (en) | A kind of Based Intelligent Control energy-conservation fuel delivery device | |
| CN206800507U (en) | Constant pressure water supply system | |
| CN105278352B (en) | Oil-field flooding automatic control system and its method | |
| CN105507378A (en) | Frequency-conversion-type automatic constant-pressure water supplying system and method | |
| CN102916640A (en) | Phase-control excitation control device and method for internal combustion locomotive | |
| CN105971864B (en) | Pump group drive system | |
| CN102810976A (en) | Comprehensive power saver | |
| CN206205867U (en) | A kind of Based Intelligent Control energy-conservation flood pattern | |
| CN201925144U (en) | Automatic control device of mine water pump | |
| CN104539197A (en) | Soft start and voltage reduction power saving comprehensive control device and method for asynchronous motor | |
| CN204326159U (en) | A kind of for providing the energy-saving water supply system of stationary flow and pressure | |
| CN205475474U (en) | Automatic water supply control system of inverter type constant voltage | |
| CN203384018U (en) | Air compressor energy-saving cabinet control system | |
| CN107956458A (en) | A kind of energy saving flood pattern of intelligent control | |
| CN102564240B (en) | Intelligent control device for drying bright beads of fireworks and firecrackers | |
| CN101409501A (en) | Subharmonic intelligent electricity saver | |
| CN201312255Y (en) | Low harmonic intelligent electricity economizer | |
| CN107968616A (en) | A kind of energy saving fuel delivery device of intelligent control | |
| CN207308081U (en) | Intelligent crusher control system | |
| CN214994342U (en) | Constant pressure frequency conversion water supply system based on ACS510 frequency converter | |
| CN204790497U (en) | It is equipped with pump variable frequency electrical system to use one | |
| CN207543015U (en) | Two desalination water pumps share frequency conversion switching control device | |
| CN203130459U (en) | Reciprocating compressor capacity stepless regulating system | |
| CN202502377U (en) | Intelligent control device for drying bright beads of fireworks and firecrackers | |
| CN201788399U (en) | Grease lubrication control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |