CN113866450A - Portable anti-blocking gas-solid two-phase flow velocity automatic measurement method and device - Google Patents
Portable anti-blocking gas-solid two-phase flow velocity automatic measurement method and device Download PDFInfo
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- CN113866450A CN113866450A CN202111132524.2A CN202111132524A CN113866450A CN 113866450 A CN113866450 A CN 113866450A CN 202111132524 A CN202111132524 A CN 202111132524A CN 113866450 A CN113866450 A CN 113866450A
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- pressure pipe
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- phase flow
- static pressure
- flow velocity
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- 239000007787 solid Substances 0.000 title claims abstract description 44
- 230000005514 two-phase flow Effects 0.000 title claims abstract description 38
- 238000000691 measurement method Methods 0.000 title claims abstract description 11
- 230000003068 static effect Effects 0.000 claims abstract description 53
- 238000010926 purge Methods 0.000 claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 17
- 238000007664 blowing Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 9
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 206010037544 Purging Diseases 0.000 description 12
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/08—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring variation of an electric variable directly affected by the flow, e.g. by using dynamo-electric effect
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
A portable anti-blocking gas-solid two-phase flow velocity automatic measurement method obtains the full pressure and static pressure of the gas-solid two-phase flow through a full pressure pipe and a static pressure pipe; the purging mechanism purges the total pressure pipe and the static pressure pipe; the full-pressure pipe and the static pressure pipe are switched by the electric tee joint and connected to a pressure transmitter, and the pressure transmitter acquires the full pressure and the static pressure of the measured fluid. When the gas-solid two-phase flow measures the fluid velocity, the invention can effectively prevent the fixed particles from blocking in the device to cause measurement errors, improves the reliability and the accuracy of the measuring device, and is a portable and full-automatic gas-solid two-phase flow velocity measuring method and device.
Description
Technical Field
The invention discloses a portable anti-blocking gas-solid two-phase flow velocity automatic measurement method and device, and belongs to the field of multiphase flow velocity measurement.
Background
Pneumatic conveying is an effective method for conveying granular solids in pipelines by utilizing airflow, and the fluid is called gas-solid two-phase flow and is widely applied to powder conveying in various industrial departments, such as pipeline conveying of solid fuels such as coal dust and the like in a thermal power plant. If the fluid velocity is too low, it may cause particles to deposit in the pipe, and in severe cases even cause explosive combustion of the particles in the pipe, and if the flow velocity is too high, the wear on the pipe may increase. Therefore, the measurement of the fluid velocity of the gas-solid two-phase flow has important significance for ensuring the production safety and improving the particle conveying efficiency.
At present, a backrest tube is often used to measure the total pressure and static pressure of the gas-solid two-phase flow, the total pressure and static pressure values are read by a differential pressure gauge, and the flow velocity of the fluid is calculated by combining parameters such as atmospheric pressure, temperature and fluid density. When a single fluid is used, such as a fluid with only wind, the measurement mode is accurate; when the device is used in gas-solid two-phase flow, the backrest pipe can be blocked by solid particles after working for a period of time, the full pressure and static pressure are inaccurate to measure, and even the measurement cannot be carried out, so that the measurement precision and efficiency are seriously influenced.
In order to solve the problem that solid particles in the gas-solid two-phase flow block a measuring device to cause inaccurate and ineffective measurement, the invention provides a portable anti-blocking gas-solid two-phase flow velocity automatic measuring method and a device thereof, which can effectively prevent fixed particles from blocking in the device to cause measuring errors, improve the reliability and accuracy of the measuring device and are a portable and full-automatic gas-solid two-phase flow velocity measuring method and a device thereof.
Disclosure of Invention
The invention aims to provide a portable anti-blocking gas-solid two-phase flow velocity automatic measuring method and device, which can effectively prevent fixed particles from blocking in the device, prevent measuring errors caused by blocking and improve the reliability and accuracy of the measuring device. In order to achieve the above object, the following technical solutions are adopted.
A portable anti-blocking gas-solid two-phase flow velocity automatic measurement method is characterized by comprising the following steps:
(1) acquiring the total pressure and the static pressure of the gas-solid two-phase flow through a total pressure pipe and a static pressure pipe;
(2) the purging mechanism purges the total pressure pipe and the static pressure pipe;
(3) the full-pressure pipe and the static pressure pipe are switched by the electric tee joint and connected to a pressure transmitter, and the pressure transmitter acquires the full pressure and the static pressure of the measured fluid.
Preferably, when the AC end of the electric tee is communicated, the differential pressure transmitter can convert the differential pressure at the front end P1 of the full pressure pipe and the front end P2 of the static pressure pipe into electric signals and send the electric signals to the control unit.
Preferably, when the purging mechanism is communicated with the AB end of the electric tee joint, the purging mechanism can purge pipelines of a full-pressure pipe and a static pressure pipe.
The utility model provides a portable anti-blocking gas-solid two-phase flow velocity of flow automatic measuring device, includes that full-pressure pipe, static pressure pipe, electronic tee bend, differential pressure transmitter, sweep mechanism, the control unit constitutes its characterized in that: the full-pressure pipe and the static pressure pipe are embedded into the main body, a movable sealing flange is installed outside the main body, a dustproof filter screen is arranged in the tail end pipe of the full-pressure pipe and the static pressure pipe, the A end of the electric tee joint is connected with the tail end of the full-pressure pipe and the static pressure pipe, the B end of the electric tee joint is connected with the S1 and the S2 air source interface of the blowing mechanism through the air pipe, the C end of the electric tee joint is connected with the differential pressure transmitter through a sealing hose, and the electric tee joint can achieve the functions of AC end communication and AB end communication under the control of the control unit.
Preferably, the front end P1 of the total pressure pipe and the front end P2 of the static pressure pipe are respectively positioned at the upstream and the downstream of the flowing direction.
Preferably, the total pressure pipe and the static pressure pipe are all in circular arc turning, so that solid particles cannot be deposited in the pipeline during back blowing.
Preferably, the aperture size of the dustproof filter screen is 10-100um, and the dustproof filter screen is selected according to the size of fixed particles in gas-solid two-phase flow.
Preferably, the electric tee joint, the differential pressure transmitter and the purging mechanism are respectively in electric control connection with the control unit.
Preferably, the outer part of the main body is in a circular tube shape, and the outer diameter of the main body is smaller than the diameter of a measuring hole on a measuring site.
Preferably, the sealing flange is connected with the field measuring hole in a sealing mode, and the sealing flange moves on the main body to control the depth of the total pressure pipe and the static pressure pipe in the measured fluid.
After the scheme is adopted, the portable anti-blocking gas-solid two-phase flow velocity automatic measuring method and device have the following beneficial effects:
1. the fluid speed is measured fully automatically, manual intervention is not needed, and time and labor are saved;
2. and the pipeline is automatically blown and swept, so that the measurement accuracy is improved.
Drawings
FIG. 1 is a schematic structural diagram of a portable anti-blocking gas-solid two-phase flow velocity automatic measurement method and device of the present invention.
Wherein: the device comprises a 1-total pressure pipe, a 2-static pressure pipe, a 3-main body, a 4-sealing flange, a 5-1 dustproof filter screen, a 5-2 dustproof filter screen, a 6-1 electric tee joint, a 6-2 electric tee joint, a 7-differential pressure transmitter, an 8-control unit, a 9-purging mechanism, a 10-sealing hose and an 11-air pipe.
Detailed Description
The invention will be elucidated on the basis of an embodiment shown in the drawing. The embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is not limited to the following description of the embodiments, but is defined only by the scope of the claims, and includes all modifications having the same meaning as and within the scope of the claims.
The structure of the portable anti-blocking gas-solid two-phase flow velocity automatic measuring device is described below by combining with specific embodiments.
FIG. 1 is a schematic structural diagram of a portable anti-blocking gas-solid two-phase flow velocity automatic measurement method and device of the invention, comprising:
the pressure pipe 1, the static pressure pipe 2, the electronic tee bend 6-1/6-2, differential pressure transmitter 7, sweep mechanism 9, the control unit 8 constitutes, its characterized in that: the full-pressure pipe 1 and the static pressure pipe 2 are embedded in the main body 3, a movable sealing flange 4 is mounted outside the main body 3, a dustproof filter screen 5-1/5-2 is arranged in the tail end pipe of the full-pressure pipe 1 and the static pressure pipe 2, the A end of the electric tee joint 6-1/6-2 is connected with the full-pressure pipe 1 and the tail end of the static pressure pipe 2, the B end of the electric tee joint is connected with the S1 and the S2 air source interface of the blowing mechanism 9 through an air pipe 11, the C end of the electric tee joint is connected with the differential pressure transmitter 7 through a sealing hose 10, and the electric tee joint 6-1/6-2 can realize AC end communication and AB end communication functions under the control of the control unit 8.
Preferably, the front end P1 of the total pressure pipe 1 and the front end P2 of the static pressure pipe 2 are respectively positioned at the upstream and the downstream of the flowing direction.
Preferably, the total pressure pipe 1 and the static pressure pipe 2 are all in circular arc turning, so that solid particles cannot be deposited in the pipeline during back blowing.
Preferably, the aperture size of the dustproof filter screen 5-1/5-2 is 10-100um, and the dustproof filter screen is selected according to the size of fixed particles in gas-solid two-phase flow.
Preferably, the electric tee 6-1/6-2, the differential pressure transmitter 7 and the purging mechanism 9 are respectively in electric control connection with the control unit 8.
Preferably, the main body 3 is in a circular tube shape, and the outer diameter is smaller than the diameter of a measuring hole on a measuring site.
Preferably, the sealing flange 4 is connected with a field measuring hole in a sealing mode, and the sealing flange 4 moves on the main body 3 to control the depth of the total pressure pipe 1 and the static pressure pipe 2 in the measured fluid.
The embodiment is based on a portable anti-blocking gas-solid two-phase flow velocity automatic measurement method, which comprises the following steps:
(1) acquiring the total pressure and the static pressure of the gas-solid two-phase flow through a total pressure pipe 1 and a static pressure pipe 2;
(2) the full-pressure pipe 1 and the static pressure pipe 2 are switched by the electric tee joint 6-1/6-2 to be connected to the purging mechanism 9, and the purging mechanism 9 purges the full-pressure pipe 1 and the static pressure pipe 2;
(3) the full-pressure pipe 1 and the static pressure pipe 2 are switched by the electric tee joint 6-1/6-2 to be connected to the pressure transmitter 7, and the pressure transmitter 7 obtains the full pressure and the static pressure of the measured fluid.
Preferably, the differential pressure transmitter 7 can convert the differential pressure at the front ends P1 of the total pressure pipe 1 and P2 of the static pressure pipe 2 into electric signals when the AC ends of the electric tee 6-1/6-2 are communicated, and the electric signals are sent to the control unit 8.
Preferably, the purging mechanism 9 can purge the pipelines of the total pressure pipe 1 and the static pressure pipe 2 when the AB ends of the electric tee joints 6-1/6-2 are communicated.
The specific implementation process is as follows:
(1) a purging stage: the AB end of the electric tee joint 6-1/6-2 is communicated under the control of the control unit 8, the control unit 8 controls the start of the blowing mechanism 9, the compressed air blown out by the blowing mechanism 9 flows through the air pipe 11, the electric tee joint 6-1/6-2 and the dustproof filter screen 5-1/5-2, then the inner walls of the total pressure pipe 1 and the static pressure pipe 2 are cleaned, and the time of the blowing stage is controlled to be 3-5 min;
(2) and (3) a measuring stage: the electric tee joint 6-1/6-2 enables the AC end to be communicated under the control of the control unit 8, the control unit 8 controls the purging mechanism 9 to stop, and the differential pressure transmitter 7 converts the differential pressure at the front end P1 of the total pressure pipe 1 and the front end P2 of the static pressure pipe 2 into electric signals and sends the electric signals to the control unit 8. The control unit 8 processes the electric signal, analyzes and displays the output fluid speed. The time of the measurement stage is controlled within 2 minutes, and after the measurement stage is finished, the purging stage is started again, and the measurement is repeated in this way.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that the present invention is not limited to the embodiment methods, structures, and precise structures shown in the drawings, which have been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. A portable anti-blocking gas-solid two-phase flow velocity automatic measurement method is characterized by comprising the following steps:
(1) acquiring the total pressure and the static pressure of the gas-solid two-phase flow through a total pressure pipe and a static pressure pipe;
(2) the purging mechanism purges the total pressure pipe and the static pressure pipe;
(3) the full-pressure pipe and the static pressure pipe are switched by the electric tee joint and connected to a pressure transmitter, and the pressure transmitter acquires the full pressure and the static pressure of the measured fluid.
2. The portable automatic measurement method for flow rate of anti-blocking gas-solid two-phase flow according to claim 1, which is characterized in that: when the AC end of the electric tee is communicated, the differential pressure transmitter can convert the differential pressure at the front end P1 of the total pressure pipe and the front end P2 of the static pressure pipe into electric signals and send the electric signals to the control unit.
3. The portable automatic measurement method for flow rate of anti-blocking gas-solid two-phase flow according to claim 1, which is characterized in that: when the AB end of the electric tee joint is communicated, the purging mechanism can purge pipelines of a total pressure pipe and a static pressure pipe.
4. The utility model provides a portable anti-blocking gas-solid two-phase flow velocity of flow automatic measuring device, includes that full-pressure pipe, static pressure pipe, electronic tee bend, differential pressure transmitter, sweep mechanism, the control unit constitutes its characterized in that: the full-pressure pipe and the static pressure pipe are embedded into the main body, a movable sealing flange is installed outside the main body, a dustproof filter screen is arranged in the tail end pipe of the full-pressure pipe and the static pressure pipe, the A end of the electric tee joint is connected with the tail end of the full-pressure pipe and the static pressure pipe, the B end of the electric tee joint is connected with the S1 and the S2 air source interface of the blowing mechanism through the air pipe, the C end of the electric tee joint is connected with the differential pressure transmitter through a sealing hose, and the electric tee joint can achieve the functions of AC end communication and AB end communication under the control of the control unit.
5. The portable anti-blocking gas-solid two-phase flow velocity automatic measuring device according to claim 4, characterized in that: the front end P1 of the total pressure pipe and the front end P2 of the static pressure pipe are respectively positioned at the upstream and the downstream of the flowing direction.
6. The portable anti-blocking gas-solid two-phase flow velocity automatic measuring device according to claim 4, characterized in that: the total pressure pipe and the static pressure pipe are all turned by arcs, so that solid particles cannot be deposited in the pipeline during back blowing.
7. The portable anti-blocking gas-solid two-phase flow velocity automatic measuring device according to claim 4, characterized in that: the aperture size of the dustproof filter screen is 10-100um, and the dustproof filter screen is selected according to the size of fixed particles in the gas-solid two-phase flow.
8. The portable anti-blocking gas-solid two-phase flow velocity automatic measuring device according to claim 4, characterized in that: the electric tee joint, the differential pressure transmitter and the purging mechanism are electrically connected with the control unit respectively.
9. The portable anti-blocking gas-solid two-phase flow velocity automatic measuring device according to claim 4, characterized in that: the outside of the main body is in a circular tube shape, and the outer diameter of the main body is smaller than the diameter of a measuring hole on a measuring site.
10. The portable anti-blocking gas-solid two-phase flow velocity automatic measuring device according to claim 4, characterized in that: the sealing flange is connected with the field measuring hole in a sealing mode, and the sealing flange moves on the main body and can control the depth of the total pressure pipe and the static pressure pipe in the measured fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111132524.2A CN113866450A (en) | 2021-09-27 | 2021-09-27 | Portable anti-blocking gas-solid two-phase flow velocity automatic measurement method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111132524.2A CN113866450A (en) | 2021-09-27 | 2021-09-27 | Portable anti-blocking gas-solid two-phase flow velocity automatic measurement method and device |
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| CN113866450A true CN113866450A (en) | 2021-12-31 |
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| CN202111132524.2A Pending CN113866450A (en) | 2021-09-27 | 2021-09-27 | Portable anti-blocking gas-solid two-phase flow velocity automatic measurement method and device |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4305281A (en) * | 1979-06-04 | 1981-12-15 | Rockwell International Corporation | Self-correcting self-checking turbine meter |
| JP2009264758A (en) * | 2008-04-22 | 2009-11-12 | Tokyo Keiso Co Ltd | Three-way valve for differential pressure flow meter |
| CN103424150A (en) * | 2013-08-09 | 2013-12-04 | 江苏杰创流量仪表有限公司 | High-precision anti-blocking flowmeter |
| CN205352780U (en) * | 2015-12-11 | 2016-06-29 | 江苏康达检测技术股份有限公司 | Multi -functional sampling tube of smoke and dust |
| CN105784021A (en) * | 2016-04-22 | 2016-07-20 | 南京友智科技有限公司 | Whole-section flow measurement device for circular pipeline |
| CN109580982A (en) * | 2018-11-22 | 2019-04-05 | 国网天津市电力公司电力科学研究院 | A kind of fired power generating unit band powder air-flow block-proof type speed-measuring method |
| CN209027600U (en) * | 2018-11-12 | 2019-06-25 | 上海库科自动化科技有限公司 | A kind of coke oven, blast furnace gas measure Special Automatic block-resistant type pitot tube flowmeter |
| CN111750937A (en) * | 2020-04-09 | 2020-10-09 | 华电电力科学研究院有限公司 | Coal-fired power plant boiler secondary air quantity measuring device capable of automatically purging and control method thereof |
| CN211668578U (en) * | 2020-03-16 | 2020-10-13 | 河南新航流量仪表有限公司 | Differential pressure type throttling flowmeter |
-
2021
- 2021-09-27 CN CN202111132524.2A patent/CN113866450A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4305281A (en) * | 1979-06-04 | 1981-12-15 | Rockwell International Corporation | Self-correcting self-checking turbine meter |
| JP2009264758A (en) * | 2008-04-22 | 2009-11-12 | Tokyo Keiso Co Ltd | Three-way valve for differential pressure flow meter |
| CN103424150A (en) * | 2013-08-09 | 2013-12-04 | 江苏杰创流量仪表有限公司 | High-precision anti-blocking flowmeter |
| CN205352780U (en) * | 2015-12-11 | 2016-06-29 | 江苏康达检测技术股份有限公司 | Multi -functional sampling tube of smoke and dust |
| CN105784021A (en) * | 2016-04-22 | 2016-07-20 | 南京友智科技有限公司 | Whole-section flow measurement device for circular pipeline |
| CN209027600U (en) * | 2018-11-12 | 2019-06-25 | 上海库科自动化科技有限公司 | A kind of coke oven, blast furnace gas measure Special Automatic block-resistant type pitot tube flowmeter |
| CN109580982A (en) * | 2018-11-22 | 2019-04-05 | 国网天津市电力公司电力科学研究院 | A kind of fired power generating unit band powder air-flow block-proof type speed-measuring method |
| CN211668578U (en) * | 2020-03-16 | 2020-10-13 | 河南新航流量仪表有限公司 | Differential pressure type throttling flowmeter |
| CN111750937A (en) * | 2020-04-09 | 2020-10-09 | 华电电力科学研究院有限公司 | Coal-fired power plant boiler secondary air quantity measuring device capable of automatically purging and control method thereof |
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Inventor after: Huang Xiaobin Inventor after: Zhang Miaomiao Inventor after: Wei Wei Inventor after: Zhu Lei Inventor after: Feng Zhiqiang Inventor after: Ren Guofeng Inventor after: Liu Mingkui Inventor after: Tu Xuewei Inventor after: Wu Guoxun Inventor after: Zheng Yafeng Inventor after: Wang Jianlin Inventor before: Huang Xiaobin Inventor before: Zhang Miaomiao Inventor before: Wei Wei Inventor before: Zhu Lei Inventor before: Feng Zhiqiang Inventor before: Ren Guofeng Inventor before: Liu Mingkui Inventor before: Tu Xuewei Inventor before: Wu Guoxun Inventor before: Zheng Yafeng Inventor before: Wang Jianlin |
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Application publication date: 20211231 |