CN109083623B - Intelligent underground layered water injection flow adjusting system - Google Patents
Intelligent underground layered water injection flow adjusting system Download PDFInfo
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- CN109083623B CN109083623B CN201810966908.6A CN201810966908A CN109083623B CN 109083623 B CN109083623 B CN 109083623B CN 201810966908 A CN201810966908 A CN 201810966908A CN 109083623 B CN109083623 B CN 109083623B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 169
- 238000002347 injection Methods 0.000 title claims abstract description 55
- 239000007924 injection Substances 0.000 title claims abstract description 55
- 238000010248 power generation Methods 0.000 claims abstract description 31
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 28
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 14
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 14
- 239000010703 silicon Substances 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 11
- 239000011229 interlayer Substances 0.000 description 9
- 210000001503 joint Anatomy 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0085—Adaptations of electric power generating means for use in boreholes
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Hydraulic Turbines (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to an underground layered water injection flow intelligent regulating system which comprises a PLC control unit, an upper connector, a taper hole flow channel conversion pipe, a power generation unit, an intelligent water distributor and a lower connector, wherein the upper connector, the taper hole flow channel conversion pipe, the power generation unit, the intelligent water distributor and the lower connector are sequentially connected from top to bottom; the lower end of the power generation unit and the water injection branch are communicated with an intelligent water distributor, a water distribution cavity of the intelligent water distributor is communicated with a water outlet cavity through an adjustable water nozzle, a platinum thermal resistance thermometer, a lever flowmeter and a silicon piezoresistive pressure gauge are installed in the water outlet cavity, and the adjustable water nozzle is connected with a speed reduction motor. The invention does not need repeated throwing and fishing operation, and the water injection quantity can be adjusted in real time.
Description
Technical Field
The invention relates to a layered water injection system, in particular to an underground layered water injection flow intelligent adjusting system.
Background
Separate layer water injection is an important technical means for realizing long-term high and stable yield in oil field development, and the separate layer water injection technology of bridge type eccentricity and direct reading measurement and adjustment of steel pipe and cable has been successfully applied to measurement and adjustment and injection allocation of domestic oil field separate layer water injection wells, but the method has the following problems in use:
(1) determining the interlayer water injection amount, namely putting a measuring and adjusting instrument layer by layer, using equipment such as a cable winch, a wellhead closed blowout preventer, a wellhead pulley block and the like in the process, needing a large amount of manpower and material resources and consuming time;
(2) if the interlayer water injection amount is changed, the size of the water nozzle needs to be adjusted, the water nozzle can only be replaced through the throwing and fishing operation in the conventional layered water injection method, the workload is high, and the interlayer water injection amount cannot be adjusted in real time.
Disclosure of Invention
The invention aims to provide an intelligent underground stratified water injection flow adjusting system which is used for solving the problems that the conventional stratified water injection needs frequent bailing operation, the workload of measuring and adjusting the stratified water injection is large, and the water injection amount cannot be adjusted in real time.
The technical scheme adopted by the invention for solving the technical problems is as follows: the underground layered water injection flow intelligent regulation system comprises a PLC control unit, an upper connector, a taper hole flow channel conversion pipe, a power generation unit, an intelligent water distributor and a lower connector, wherein the upper connector, the taper hole flow channel conversion pipe, the power generation unit, the intelligent water distributor and the lower connector are sequentially connected from top to bottom; the lower end of the power generation unit is communicated with an intelligent water distributor, a water injection branch is also communicated with the intelligent water distributor, the intelligent water distributor is provided with a water distribution cavity and a water outlet cavity, the upper part of the water distribution cavity is provided with a water through hole, the water distribution cavity is communicated with the water outlet cavity through an adjustable water nozzle, the water outlet cavity is internally provided with a platinum thermal resistance thermometer, a lever flowmeter and a silicon piezoresistive pressure gauge, the adjustable water nozzle is connected with a speed reduction motor, and the water outlet cavity is provided with a water outlet hole; the platinum thermal resistance thermometer, the lever flowmeter, the silicon piezoresistive pressure gauge and the speed reducing motor are all connected with the PLC control unit.
The taper hole runner converting pipe in the scheme comprises two parts of pipe bodies, the two parts of pipe bodies are connected and conducted through a short circuit, and the taper hole runner converting pipe, the power generation unit and the intelligent water distributor are also connected and conducted through the short circuit in sequence so as to realize butt joint of all runners.
The solenoid valve uses the normal close formula among the above-mentioned scheme, and the inlet opening is normally closed.
The water distribution cavity is located in the center of the intelligent water distributor, the water outlet cavity is located on the side face of the water distribution cavity, the adjustable water nozzle is installed on the lower portion of the intelligent water distributor, the opening degree of the water nozzle is controlled through the piston capable of moving up and down, the lower portion of the piston is provided with the water through hole, the consistency of water pressure at two ends of the piston is guaranteed, and the piston is connected with the speed reducing motor.
In the scheme, the underground impeller generator is positioned in a flow channel formed by the lower circular taper hole, the inner cavity of the power generation unit and the water distribution cavity of the intelligent water distributor, and drives the impeller to rotate through water power to generate power, so that the underground impeller generator is used for regulating and controlling the power supply of the water nozzle by the speed reduction motor in the intelligent water distributor.
In the scheme, the underground impeller generator is connected with the supporting seat with the bottom provided with the through hole through the bolt, and the platinum thermal resistance thermometer, the lever flowmeter and the silicon piezoresistive pressure gauge are all fixed through the mesh support.
In the scheme, the PLC control unit monitors the residual electric quantity of the system battery in real time through the system battery electric quantity control module, and when the residual electric quantity of the system battery is less than 20% of the total electric quantity, the PLC control unit enables the electromagnetic valve to be electrified, and the control valve is opened, so that water generates electricity through the underground impeller generator; when the system battery is fully charged, the PLC control unit enables the electromagnetic valve to be powered off, the control valve is closed, and the underground impeller generator stops generating electricity.
The invention has the following beneficial effects:
(1) the underground layered water injection intelligent regulating system is integrally placed at one time, a plurality of levels can be set according to the underground water injection requirement, and the flow intelligent regulating system is arranged at each level. No matter the interlayer data is measured or the interlayer water injection quantity is adjusted, time-consuming and labor-consuming throwing and fishing operation is not needed, the labor intensity of personnel is reduced, the cost is saved, and the blocking risk in underground operation is reduced.
(2) The shape and size of the underground separate layer water injection intelligent adjusting system are the same as those of a commonly used underground separate layer water injector, and supporting equipment such as installation and the like and well mouth size do not need to be replaced during production, so that the workload of updating the equipment is reduced.
(3) The underground layered water injection intelligent adjusting system can intelligently adjust the water injection quantity of each layer in real time without influencing the water injection quantity of other layers. According to the information fed back by the platinum thermal resistance thermometer, the lever flowmeter and the silicon piezoresistive pressure gauge, the opening degree of the water nozzle is adjusted by the PLC control speed reducing motor, so that the interlayer water injection amount is regulated and controlled, and the problem that the water injection amount cannot be timely changed due to regular measurement and adjustment is solved.
(4) The underground layered water injection intelligent adjusting system controls the water flow direction through the electromagnetic valve, and the water flow generates electricity through the impeller generator only when the electric quantity of the battery is insufficient, so that the service lives of the impeller generator and the battery are greatly prolonged, and the whole set of device can work for a long time.
(5) The invention does not need repeated throwing and fishing operation, can set a plurality of levels according to the underground water injection requirement in one-time underground operation, arranges the flow intelligent adjusting system in each level, can be used for a long time by the whole device, can intelligently adjust the water injection flow according to the data among the layers, and obviously reduces the cost.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a cross-sectional view of a tapered bore flow channel transition tube (A-A) of the present invention;
FIG. 3 is a sectional view of the solenoid valve (B-B) of the present invention;
FIG. 4 is a cross-sectional view of a short (C-C) according to the present invention;
FIG. 5 is a cross-sectional view of the intelligent water distributor (D-D) of the present invention.
In the figure: 1. an upper joint; 2. a taper hole flow passage conversion pipe; 3. an electromagnetic valve; 4. short-circuit connection; 5. butt-joint pipes; 6. a power generation branch; 7. a power generation unit; 8. a downhole impeller generator; 9. an intelligent water distributor; 10. a lower joint; 11. a reduction motor; 12. the water nozzle can be adjusted and controlled; 13. a platinum thermistor thermometer; 14. a lever flow meter; 15. a silicon piezoresistive pressure gauge; 16. a water outlet hole; 17. water passing holes; 18. a water injection branch; 19. and (4) offsetting the holes.
Detailed Description
The invention is further described with reference to the accompanying drawings in which:
with reference to fig. 1, 2, 3, 4, and 5, the system for intelligently adjusting the flow rate of downhole stratified water injection comprises an upper joint 1, a tapered hole flow channel transition pipe 2, a power generation unit 7, an intelligent water distributor 9, a lower joint 10, and a PCL control unit, which are sequentially connected from top to bottom. Two offset holes 19 are arranged on two sides of the tapered hole flow channel conversion pipe 2, an upper circular tapered hole is positioned between the two offset holes 19, the upper circular tapered hole is wide at the top and narrow at the bottom, the tail end of the upper circular tapered hole is communicated with the power generation branch 6 and the water injection branch 18, the electromagnetic valve 3 is arranged in the middle of the tapered hole flow channel conversion pipe 2, the electromagnetic valve 3 controls the power generation branch 6 to be closed and opened, namely the electromagnetic valve 3 is arranged to control the water flow direction, the tail end of the power generation branch 6 is connected with a lower circular tapered hole, the lower circular tapered hole is narrow at the top and wide at the bottom, the lower circular tapered hole is communicated with the power generation unit 7, the power generation unit 7 is internally provided with a downhole impeller generator 8, and when the electromagnetic valve; the lower end of the power generation unit 7 is communicated with an intelligent water distributor 9, a water injection branch 18 is also communicated with the intelligent water distributor 9, the intelligent water distributor 9 is provided with a water distribution cavity and a water outlet cavity, the upper part of the water distribution cavity is provided with a water through hole 17, the water distribution cavity is communicated with the water outlet cavity through an adjustable water nozzle 12, the water outlet cavity is internally provided with a platinum thermal resistance thermometer 13, a lever flowmeter 14 and a silicon piezoresistive pressure gauge 15, the adjustable water nozzle 12 is connected with a speed reducing motor 11, and the water outlet cavity is provided with a water outlet hole 16; the platinum thermal resistance thermometer 13, the lever flowmeter 14, the silicon piezoresistive pressure gauge 15 and the speed reducing motor 11 are all connected with the PLC control unit. The PLC control unit adjusts the opening degree of the water nozzle through interlayer data measured by the platinum thermal resistance thermometer 13, the lever flowmeter 14 and the silicon piezoresistive pressure gauge 15, and then intelligently regulates and controls the water injection flow.
The taper hole runner switching pipe 2 comprises two pipe bodies which are connected through a short circuit 4, and a butt joint pipe 5 is arranged in the short circuit to connect and conduct the water injection branch 18, the power generation branch 6 and the eccentric hole 19.
In the invention, the runner of the taper hole runner switching pipe is divided into two branches at the electromagnetic valve 3, one branch is communicated with the underground impeller generator 8 through a round taper hole with a narrow upper part and a wide lower part, the other branch is directly communicated with the intelligent water distributor 9, and the two branches are converged at the upper end of the intelligent water distributor 9.
The working principle of the invention is as follows:
water flow enters the pipe body from the upper connector 1, and a part of the water flow flows downwards from the offset holes 19 on the two sides shown in figure 2 and is used for water injection of the level where the system is located and other levels below the system; the other part enters the body of the taper hole flow channel switching pipe 2 through a taper hole with a wide upper part and a narrow lower part and is divided into a power generation branch 6 and a water injection branch 18 at the electromagnetic valve 3. When the electric quantity of the battery is insufficient, the electromagnetic valve 3 is opened, water flows to the underground impeller generator 8 through the power generation branch 6 and the round taper hole with the narrow top and the wide bottom, flows through the underground impeller generator 8 to perform hydroelectric power generation and supplies power to the battery, and the water flow in the water injection branch 18 is used for ensuring that the water pressure of the underground impeller generator 8 is consistent; when the battery electric quantity is sufficient, the electromagnetic valve 3 is in a closed state, water flow directly leads to the intelligent water distributor 9 through the water injection branch 18, and the two branches are converged at the upper end of the intelligent water distributor 9. Part of water in the eccentric holes 19 on the two sides flows through the water through holes 17 on the upper part of the intelligent water distributor 9 and is converged with the water flow passing through the tapered hole flow channel switching pipe 2 for water injection of the layer. The speed reducing motor 11 in the intelligent water distributor 9 adjusts the position of the piston through the interlayer information fed back by the arranged platinum thermal resistance thermometer 13, the lever flowmeter 14 and the silicon piezoresistive pressure gauge 15, and further adjusts the opening of the adjustable water nozzle 12, thereby achieving the purpose of controlling the interlayer water injection amount. Finally the water is injected into the formation through the outlet hole 16.
The butt joint of the flow passages is ensured by arranging short joints 4 between the pipe bodies. The short connector 4 is connected with the pipe body through threads, and is fixed by using thread glue, so that butt joint between flow channels is ensured, and the water injection branch 18, the power generation branch 6 and the eccentric hole 19 are respectively communicated from top to bottom. The underground impeller generator 8 is connected with a supporting seat with a through hole at the bottom through a bolt. The platinum thermistor thermometer 13, the lever flowmeter 14 and the silicon piezoresistive pressure gauge 15 are all fixed by a mesh support.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims.
Claims (5)
1. The utility model provides a layering water injection flow intelligent regulation system in pit which characterized in that: the underground layered water injection flow intelligent regulation system comprises a PLC control unit, an upper joint (1), a taper hole flow channel conversion pipe (2), a power generation unit (7), an intelligent water distributor (9) and a lower joint (10) which are sequentially connected from top to bottom, wherein two offset holes (19) are arranged on two sides of the taper hole flow channel conversion pipe (2), an upper circular taper hole is positioned between the two offset holes (19), the upper circular taper hole is wide at the top and narrow at the bottom, the tail end of the upper circular taper hole is communicated with a power generation branch (6) and a water injection branch (18), an electromagnetic valve (3) is arranged in the middle of the taper hole flow channel conversion pipe (2), the electromagnetic valve (3) controls the power generation branch (6) to be closed and opened, the tail end of the power generation branch (6) is connected with a lower circular taper hole, the upper circular taper hole is narrow at the bottom and wide at the bottom, the lower circular taper hole is communicated with the power generation unit, when the electromagnetic valve (3) controls water flow to pass through the underground impeller generator (8), the power generation unit (7) charges a system battery; the lower end of the power generation unit (7) is communicated with an intelligent water distributor (9), a water injection branch (18) is also communicated with the intelligent water distributor (9), the intelligent water distributor (9) is provided with a water distribution cavity and a water outlet cavity, the upper part of the water distribution cavity is provided with a water through hole (17), the water distribution cavity is communicated with the water outlet cavity through an adjustable water nozzle (12), a platinum thermal resistance thermometer (13), a lever flowmeter (14) and a silicon piezoresistive pressure gauge (15) are arranged in the water outlet cavity, the adjustable water nozzle (12) is connected with a speed reduction motor (11), and the water outlet cavity is provided with a water outlet hole (16); the platinum thermal resistance thermometer (13), the lever flowmeter (14), the silicon piezoresistive pressure gauge (15) and the speed reducing motor (11) are all connected with the PLC control unit;
the water distribution cavity is positioned in the center of the intelligent water distributor (9), the water outlet cavity is positioned on the side surface of the water distribution cavity, the adjustable water nozzle (12) is arranged at the lower part of the intelligent water distributor (9), the opening degree of the water nozzle is controlled by a piston capable of moving up and down, a water through hole is arranged at the lower part of the piston, and the piston is connected with a speed reducing motor (11);
the PLC control unit monitors the residual electric quantity of the system battery in real time through the system battery electric quantity control module, and when the residual electric quantity of the system battery is less than 20% of the total electric quantity, the PLC control unit enables the electromagnetic valve (3) to be electrified and the control valve to be opened, so that water is enabled to generate electricity through the underground impeller generator (8); when the system battery is fully charged, the PLC control unit enables the electromagnetic valve (3) to be powered off, the control valve is closed, and the underground impeller generator (8) stops generating electricity.
2. The system for intelligently adjusting the flow rate of downhole zonal injection according to claim 1, wherein: the taper hole runner conversion pipe (2) comprises two parts of pipe bodies, the two parts of pipe bodies are connected and conducted through a short circuit (4), and the taper hole runner conversion pipe (2), the power generation unit (7) and the intelligent water distributor (9) are also connected and conducted through the short circuit (4) in sequence.
3. The system for intelligently adjusting the flow rate of water injection in a downhole separate layer according to claim 2, wherein: the electromagnetic valve (3) is normally closed, and the water inlet hole is normally closed.
4. The system for intelligently adjusting the flow rate of water injection in a downhole zonal injection according to claim 3, wherein: the underground impeller generator (8) is positioned in a flow channel formed by the lower circular taper hole, the inner cavity of the power generation unit (7) and the water distribution cavity of the intelligent water distributor (9), and drives the impeller to rotate through water power to generate power, so that the underground impeller generator is used for regulating and controlling the power supply of the water nozzle by the speed reduction motor (11) in the intelligent water distributor (9).
5. The system for intelligently adjusting the flow rate of downhole zonal injection according to claim 4, wherein: the underground impeller generator (8) is connected with a supporting seat with a through hole at the bottom through a bolt, and a platinum thermal resistance thermometer (13), a lever flowmeter (14) and a silicon piezoresistive pressure gauge (15) are all fixed through a net-shaped support.
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| CN201810966908.6A CN109083623B (en) | 2018-08-23 | 2018-08-23 | Intelligent underground layered water injection flow adjusting system |
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| CN201810966908.6A CN109083623B (en) | 2018-08-23 | 2018-08-23 | Intelligent underground layered water injection flow adjusting system |
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| CN109083623A CN109083623A (en) | 2018-12-25 |
| CN109083623B true CN109083623B (en) | 2021-01-05 |
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|---|---|---|---|---|
| CN109763799B (en) * | 2019-03-18 | 2020-11-10 | 中国石油化工股份有限公司 | Method for controlling separated layer water injection by using flow wave |
| CN110284877B (en) * | 2019-05-25 | 2022-12-30 | 中国海洋石油集团有限公司 | Underground permanent dynamic monitoring device and monitoring method |
| CN110067543B (en) * | 2019-05-30 | 2019-11-26 | 大庆华油石油科技开发有限公司 | A kind of injection well downhole flow regulator for realizing switch by electromagnetic drive |
| CN112907925A (en) * | 2019-12-03 | 2021-06-04 | 中国石油化工股份有限公司 | Downhole data monitoring system and method |
| CN111005834B (en) * | 2019-12-11 | 2020-08-21 | 东北石油大学 | Downhole turbine piezoelectric hybrid power generation device |
| CN110984927B (en) * | 2019-12-11 | 2020-07-28 | 东北石油大学 | From wireless water injection mandrel of electricity generation formula intelligence |
| CN111425172B (en) * | 2020-03-25 | 2022-03-01 | 中国石油天然气股份有限公司 | Chemical flooding constant-current dispenser |
| CN111425184A (en) * | 2020-03-31 | 2020-07-17 | 凯跃(天津)测控技术有限公司 | Well completion permanent-placed type layered automatic measuring and regulating water injection oil extraction autonomous measuring system |
| CN114499040A (en) * | 2020-11-11 | 2022-05-13 | 中国石油天然气股份有限公司 | Underground power generation and flow measurement integrated device for wireless layered water injection |
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| US5839508A (en) * | 1995-02-09 | 1998-11-24 | Baker Hughes Incorporated | Downhole apparatus for generating electrical power in a well |
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| CN109083623A (en) | 2018-12-25 |
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