CN105318095B - A kind of throttle valve for preventing gas hydrates based on microwave technology - Google Patents

A kind of throttle valve for preventing gas hydrates based on microwave technology Download PDF

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Publication number
CN105318095B
CN105318095B CN201510681209.3A CN201510681209A CN105318095B CN 105318095 B CN105318095 B CN 105318095B CN 201510681209 A CN201510681209 A CN 201510681209A CN 105318095 B CN105318095 B CN 105318095B
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Prior art keywords
valve
microwave
pressure
valve rod
temperature
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CN105318095A (en
Inventor
周诗岽
赵永利
严红玉
卢国维
王树立
赵书华
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Beijing Yongbo Technology Co ltd
Shaanxi Gas Group New Energy Development Co ltd
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Changzhou University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0025Electrical or magnetic means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0083For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Abstract

The invention belongs to pipeline gas hydrate prevention and control fields, refer in particular to a kind of throttle valve that the fuel factor prevention gas hydrates using microwave generate;Including valve body, valve rod and flap, valve chamber is equipped in valve body, valve rod is extend into valve chamber, and valve rod bottom end is connected with flap, and valve stem tip is connected with handwheel, signal detection/reception/feedback device is mounted on valve rod, positioned at the lower section of handwheel, microwave launcher is located in valve chamber, is embedded in the bottom of valve rod, is located at flap top, pressure transmitter and temperature transmitter are mounted on the pipeline at valve outlet, and pressure and temperature signal are provided for signal detection/reception/feedback device;Signal detection/reception/feedback device can detect valve opening and closing signal, receive and process pressure transmitter and the temperature and pressure signal of temperature transmitter output, signal detection/reception/feedback device is according to valve opening and closing signal and temperature and pressure signal, the instruction that opening and closing are sent out to microwave emitter makes hydrate fast decoupled.

Description

A kind of throttle valve for preventing gas hydrates based on microwave technology
Technical field
The invention belongs to pipeline gas hydrate prevention and control fields, and day is prevented using the fuel factor of microwave in particular to a kind of The throttle valve that right gas hydrate generates.
Background technology
The hydrate prevention of pipeline gas is always that natural gas long-distance transportation needs the problem solved in the process, when Before, accident is commonplace caused by the blockage problem of gas hydrates, not only causes huge economic loss, and And detrimental effect is produced to the daily life of ambient enviroment and nearby residents;Such as the second west to east gas pipeline project in December, 2009 west section After operation, there are 50 many places ice and block up in the interior conduit of half a year and station, and prodigious influence is caused on the normal operation of pipeline.
Currently, in field practice, the hydrate Prevention Technique of pipeline gas is concentrated mainly on the defeated preceding depth of gas collection Water smoking destroys the formation condition of hydrate from the root cause, and " long range pipeline gas hyrate prevents and natural gas for article Dewatering process, 2001, (4):56-60. " describes the influence that dehydration technique generates hydrate;However, this method is for early period The investment operating cost of Deep dehydration technique is larger, does not often have commercial practice meaning;Pass through the means of injecting inhibitor It can prevent the generation of gas hydrates very well, and article " research of gas hydrates and inhibitor, 2015, (3):98- 99. " describe the research conditions for hydrate inhibitor at this stage, however, this method for inhibitor point of addition compared with Hardly possible judgement, and it is current studies have shown that reach preferable inhibition, the dosage of inhibitor is larger;Generally speaking, current needle Not more mature means are prevented to pipeline gas hydrate, however, by current numerous pipeline gas water It closes the actual accidents that object blocks to carry out analysis and find, is easiest to the point of Hydrate Plugging is caused to often focus on change in flow larger Throttle valve at, be based on this, there is an urgent need for design it is a kind of low energy consumption, high financial profit, gas hydrate with strong points prevent device.
Invention content
The purpose of the present invention is being directed to the problem of natural gas generates Hydrate Plugging pipeline after throttle valve throttling, use is micro- Wave heating technology destroys the crystallization condition of gas hydrates, develops a kind of based on microwave technology prevention gas hydrates Throttle valve, can in effectively preventing pipeline throttling process hydrate blockage problem.
The present invention provides a kind of devices preventing gas hydrates generation after throttling using microwave technology.Its feature exists It is sent out by handwheel, signal detection, reception and feedback device, circuit wind, valve stem nut, valve rod, valve chamber, microwave in the present invention The sealing of injection device, flap, pressure transmitter, temperature transmitter and valve body composition, valve uses packing seal, and powers and use External power supply.The extreme design pressure of the present invention depends on the bearing capacity of pressure-resistant glass.Operating pressure can be between 0MPa- 30MPa is suitble to high pressure, middle pressure, low pressure pipeline.
A kind of throttle valve for being prevented gas hydrates based on microwave technology, including valve body, valve rod and flap are set in valve body There are valve chamber, valve rod to extend into valve chamber, valve rod bottom end is connected with flap, and valve stem tip is connected with handwheel, it is characterised in that:Also set Have signal detection, reception and feedback device, microwave launcher, pressure transmitter and a temperature transmitter, signal detection, reception and Feedback device is mounted on valve rod, is located at the lower section of handwheel, and microwave launcher is located in valve chamber, be embedded in valve rod bottom, Positioned at flap top, pressure transmitter and temperature transmitter are mounted on the pipeline at valve outlet, be signal detection, receive and Feedback device provides pressure and temperature signal;Signal detection, reception and feedback device can detect valve opening and closing signal, receive simultaneously Processing pressure transmitter and the temperature and pressure signal of temperature transmitter output, signal detection, reception and feedback device are according to valve opening and closing Signal and temperature and pressure signal, send out microwave emitter the instruction of opening and closing, make hydrate fast decoupled.
Further, signal detection, reception and feedback device and microwave launcher are fixed on valve rod, with valve rod Rotation.
Further, valve rod is hollow structure, the letter that microwave launcher is connect with signal detection, reception and feedback device Number line is connected by stem internal.
Further, circuit wind is installed below signal detection, reception and feedback device, circuit wind is fixed In top end of the valve body, the winding on signal connecting line road when valve rod movement is mainly solved the problems, such as.
Further, in the top of valve chamber, the specific position between valve rod and valve body is equipped with packing seal, it is ensured that entire dress The air-tightness set.
Further, valve stem nut is set in the lower section of circuit wind, the top of valve inner and valve rod junction, It mainly solves the problems, such as to kill or get rusty in the process of running;Valve chamber shape is cylindrical type, and will be connected with gas vent at throttling The place of connecing is arranged to hemispherical expansion, it is ensured that during valve opening, valve rod move up, microwave emitter can act on throttling Place.
Further, the microwave launcher is made of microwave emitter, high pressure resistant glass, microwave device protection board, Microwave emitter is fixed on valve stem end around valve rod cyclization around shape, is spaced 90 ° of arrangements two-by-two, and fixed adopt is screwed, really Protecting microwave emitter in valve rod rotation process can be applied at throttling, and microwave emitter periphery is equipped with high pressure resistant glass, microwave Microwave device protection board is installed, microwave device protection board is fixed on the upside of high pressure resistant glass above transmitter.
In the present invention, when valve opening or closing, valve rod rotation is connected to signal detection on valve rod, receives and anti- Feedback device receives valve opening and closing signal, and then triggers microwave emitter and open, and emits microwave, prevents gas hydrates shape At;After valve opening reaches job requirement, valve rod stops operating, and signal detection, reception and feedback device detect that valve rod stops After stop signal, suspended market order is sent out to microwave, microwave stops transmitting;Pressure sensor and temperature sensor at valve export will Temperature and pressure signal transmission is to signal detection, reception and feedback device, during valve works normally, is generated according to hydrate Phase equilibrium line figure, when temperature and pressure are less than balancing each other, signal detection, reception and feedback device send out instruction, trigger Microwave emission Device is opened, and microwave is emitted;When temperature and pressure are higher than when balancing each other of hydrate, the signal transmission of feedback to signal detection receives and instead Device is presented, signal detection, reception and feedback device send out abort commands to microwave emitter, and microwave stops transmitting, such as Fig. 1 institutes Show.
Signal detection, reception and feedback device in the present invention are fixed on the valve rod below handwheel, are turned with valve rod It is dynamic, circuit wind is installed, circuit wind is fixed on the valve of top end of the valve body below signal detection, reception and feedback device Men Shang mainly solves the problems, such as circuit winding when valve rod movement;Microwave launcher be embedded in the bottom of valve rod, flap top Region;Space enlargement at valve chamber throttling, to ensure valve rod in rotation process, microwave emitter can be applied at throttling;It is micro- Wave transmitting device is attached with signal detection, reception and feedback device by stem internal;Pressure transmitter and temperature pick-up Device is mounted on the pipeline at valve export, and pressure and temperature signal, such as Fig. 2 are provided for signal detection, reception and feedback device It is shown.
Microwave launcher is as shown in Figure 3:Wherein microwave launcher is by microwave emitter, high pressure resistant glass, microwave Unit protection board group is at it is four that wherein microwave emitter, which uses nano material, quantity, around the arrangement of 90 ° of valve rod interval, it is ensured that Microwave emitter can be applied at throttling in valve rod rotation process, and microwave frequency uses 2.45GHz, and transmission power is ranging from 50W-600W, optimal transmission power are 190W;High pressure resistant glass can resist the impact of air-flow, protect internal Microwave emission Device, microwave device protection board are that microwave emitter exceeds transmitting range during valve rod moves up in order to prevent, and it is same have protect Protect the effect of microwave emitter.
The transmission power of 50w be after valve opening, it is minimum when temperature and pressure, which reach, to balance each other under conditions of normal operation Transmission power;And during valve opening or in pipeline normal operation, the variation of temperature and pressure is huge, since microwave power is got over Greatly, the heat acted on is bigger, i.e., deviates the degree of hydrate phase balance curve according to temperature and pressure, and the power of microwave is constantly occurring Variation;And from the aspect of energy saving, maximum excitation transmission power is set as 600w, but when external environment cataclysm causes hydrate to be given birth to Cheng Hou, since hydrate has self-shield effect, when Microwave emission power reaches 190w, temperature reaches a downward point Peak, i.e., the resolution ratio of gas is the largest at this time, therefore the power of 190w is the optimal selection of decomposition of hydrate.
Signal detection, reception and feedback device:Signal detection, reception and feedback device have detection valve opening and closing signal, The signal of pressure transmitter and temperature transmitter output is received and processed, feedback signal is received, instruction is sent out to microwave emitter Effect, and have manual operation plate, microwave emitter can be opened at the scene, abort commands;Signal detection connects Receipts and feedback device can change the transmission power of microwave emitter, the mechanism of action is according to the variation of temperature:When pipeline just Often when operation, pressure remains unchanged, if temperature reduces, deviates that the amplitude to balance each other is bigger, the microwave power excited is stronger, reaches It is 50W to Microwave emission power when balancing each other, maximum excitation transmission power is 600W.
Valve rod is as shown in Figure 4:Valve rod in the present invention is different from common common valve rod, inside done hollow processing, Purpose is to be attached signal detection, reception and feedback device and microwave launcher;Also, signal detection, reception and anti- Feedback device is fixed on microwave launcher on valve rod, is rotated together with valve rod, and can increase whole device in this way uses the longevity Life reduces maintenance rate.
The remarkable advantage of the present invention is in the following aspects:
(1) microwave can make hydrate fast decoupled, and with thermal uniformity, speed is fast, the time is short, low energy consumption, efficiency High advantage.
(2) the Microwave emission power in the present apparatus can change with the variation of temperature, with traditional prevention hydrate It generates
Method is compared, and may be implemented to automate, and reduces manual operation.And the present apparatus is easy to use, versatile.Have High, pollution-free, the harmless advantage of flexibility.
(3) present apparatus stem internal has carried out hollow processing, and microwave launcher and signal detection, reception and feedback are filled It sets solid
It is set to an entirety, and is provided with circuit wind, this design can solves valve rod and be filled to microwave in rotation It sets and the damage of signal detection, reception and feedback device, extends the service life of device, and convenient for detection and repair.
(4) present invention is only influenced by the temperature and pressure of gas in pipelines, to external environment no requirement (NR).It can easily be applied It
The fields such as right feed channel conveying, marsh gas purifying.
Description of the drawings
Fig. 1 is the throttle valve schematic diagram based on microwave technology.
Fig. 2 is the throttle-valve structure schematic diagram based on microwave technology.
1- handwheels;2- signal detections, reception and feedback device;3- circuit winds;4- valve stem nuts;5- valves Bar;6-valve chambers;7- microwave launchers;8- flaps;9- pressure transmitters;10- temperature transmitters;14- valve bodies;15- Packing seal.
Fig. 3 is microwave launcher structural schematic diagram.
5- valve rods;8- flaps;11- microwave device protection boards;12- microwave emitters;The high pressure resistant glass of 13-.
Fig. 4 is stem structure schematic diagram.
1- handwheels;3- circuit winds;5- valve rods;7- microwave launchers;8- flaps.
Specific implementation mode
As shown in Fig. 2, the present invention is mainly by handwheel 1, signal detection, reception and feedback device 2, circuit wind 3, valve Stem nut 4, valve rod 5, valve chamber 6, microwave launcher 7, flap 8, pressure transmitter 9, temperature transmitter 10, valve body 14 form.
Its specific embodiment is as follows:
(1) valve opening and closing or temperature and pressure are less than when balancing each other of hydrate, and signal detection, reception and feedback device 2 detect Valve opening and closing or temperature and pressure are less than the signal of hydrate to balance each other, and the microwave emitter 12 of bottom is passed to by conversion.
(2) microwave emitter 12 for being connected to instruction carries out Microwave emission, destroys the crystallization nucleation of gas hydrates, prevents The formation of gas hydrates, in the process the power of microwave emitter change with the variation of temperature and pressure.
(3) pressure sensor 9 Yu temperature sensor 10 of valve downstream by pressure, temperature data be transferred to signal detection, It receives and feedback device 2, signal detection, reception and feedback device 2 handles the temperature and pressure information received, and sent out to microwave Emitter 12 sends out instruction.
(4) when temperature and pressure are higher than when balancing each other of gas hydrate synthesis, signal detection, reception and feedback device 2 are to Microwave emission Device 7 sends out abort commands, and microwave stops transmitting.
It, can be by the manual operation plate on signal detection, reception and feedback device 2 at the scene when there are special circumstances Microwave emitter 12 is opened, abort commands.

Claims (9)

1. a kind of throttle valve for preventing gas hydrates based on microwave technology, including valve body, valve rod and flap are equipped in valve body Valve chamber, valve rod are extend into valve chamber, and valve rod bottom end is connected with flap, and valve stem tip is connected with handwheel, it is characterised in that:It is additionally provided with For device and microwave launcher, the pressure transmitter and temperature transmitter of signal detection, reception and feedback, for believing Number detection receives and the device of feedback is mounted on valve rod, is located at the lower section of handwheel, microwave launcher is located in valve chamber, edge Embedded in the bottom of valve rod, it is located at flap top, pressure transmitter and temperature transmitter are mounted on the pipeline at valve outlet, are Device for signal detection, reception and feedback provides pressure and temperature signal;Device for signal detection, reception and feedback Valve opening and closing signal can be detected, receive and process pressure transmitter and the temperature and pressure signal of temperature transmitter output, be used for signal Detection, the device for receiving and feeding back send out opening and closing according to valve opening and closing signal and temperature and pressure signal to microwave emitter Instruction, makes hydrate fast decoupled.
2. a kind of throttle valve for preventing gas hydrates based on microwave technology as described in claim 1, it is characterised in that:With It is fixed on valve rod in the device and microwave launcher of signal detection, reception and feedback, is rotated together with valve rod.
3. a kind of throttle valve for preventing gas hydrates based on microwave technology as described in claim 1, it is characterised in that:Valve Bar is hollow structure, and the signal wire that microwave launcher is connect with the device for signal detection, reception and feedback passes through valve rod Inside connection.
4. a kind of throttle valve for preventing gas hydrates based on microwave technology as described in claim 1, it is characterised in that:With Circuit wind is installed below the device of signal detection, reception and feedback, circuit wind is fixed in top end of the valve body, Mainly solve the problems, such as the winding on signal connecting line road when valve rod movement.
5. a kind of throttle valve for preventing gas hydrates based on microwave technology as described in claim 1, it is characterised in that: The top of valve chamber, the specific position between valve rod and valve body are equipped with packing seal, it is ensured that the air-tightness of whole device.
6. a kind of throttle valve for preventing gas hydrates based on microwave technology as claimed in claim 4, it is characterised in that: Valve stem nut is arranged in the lower section of circuit wind, the top of valve inner and valve rod junction, mainly solves in operational process In the problem of killing or getting rusty;Valve chamber shape is cylindrical type, and is expanded hemispherical is arranged at throttling with gas vent junction Greatly, it is ensured that during valve opening, valve rod move up, microwave emitter can act at throttling.
7. a kind of throttle valve for preventing gas hydrates based on microwave technology as described in claim 1, it is characterised in that:Institute Microwave launcher is stated to be made of microwave emitter, high pressure resistant glass, microwave device protection board, microwave emitter around valve rod at It is fixed on valve stem end, circumferentially-spaced 90 ° of arrangements around shape, fixed adopt is screwed, it is ensured that microwave in valve rod rotation process Transmitter can be applied at throttling, and microwave emitter periphery is equipped with high pressure resistant glass, and microwave is equipped with above microwave emitter Unit protection plate, microwave device protection board are fixed on the upside of high pressure resistant glass;High pressure resistant glass can resist the impact of air-flow, protect Protect internal microwave emitter, microwave device protection board be during valve rod moves up in order to prevent microwave emitter beyond emitting model It encloses, and equally has the function of protecting microwave emitter.
8. a kind of throttle valve for preventing gas hydrates based on microwave technology as claimed in claim 7, it is characterised in that:It is micro- Wave frequency rate uses 2.45GHz, transmission power ranging from 50W-600W;The transmission power of 50w is the normal operation after valve opening Under conditions of, the minimum transmission power when temperature and pressure, which reach, to balance each other;And during valve opening or pipeline is normally transported In row, the variation of temperature and pressure is huge, and since microwave power is bigger, the heat acted on is bigger, i.e., deviates hydrate phase according to temperature and pressure The power of the degree of the profile of equilibrium, microwave is constantly changing;And from the aspect of energy saving, maximum excitation transmission power is set For 600w, but after external environment cataclysm causes hydrate to generate, since hydrate has self-shield effect, when Microwave emission work( When rate reaches 190w, temperature reaches a downward spike, i.e., the resolution ratio of gas is the largest at this time, therefore the power of 190w is The optimal selection of decomposition of hydrate.
9. a kind of throttle valve for preventing gas hydrates based on microwave technology as described in claim 1, it is characterised in that:Institute The extreme design pressure for stating throttle valve depends on the bearing capacity of pressure-resistant glass, and operating pressure is suitble to height between 0MPa-30MPa Pressure, middle pressure, low pressure pipeline.
CN201510681209.3A 2015-10-21 2015-10-21 A kind of throttle valve for preventing gas hydrates based on microwave technology Active CN105318095B (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1393977A1 (en) * 1986-06-23 1988-05-07 П.A. Уаджар н и МоП. Наджар н Cock
CN2466466Y (en) * 2001-01-18 2001-12-19 江洪 Cold- and hot-water tap with electric water heating device
CN1499109A (en) * 2002-11-07 2004-05-26 Smc��ʽ���� Poppet valve with heater
CN101105261A (en) * 2006-07-13 2008-01-16 重庆川东阀门制造有限公司 Ice block free high pressure difference gas pressure regulator
CN201621349U (en) * 2010-02-09 2010-11-03 威海新光星电子有限公司 Automatic control device for gas conveyance
PL389641A1 (en) * 2009-11-23 2011-06-06 Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy Safety valve, especially for the reaction chamber of microwave chemical reactor
CN202065515U (en) * 2011-05-12 2011-12-07 上海耐腐阀门集团有限公司 Energy-saving type self-control fluorine-lined regulating valve
CN102401188A (en) * 2010-09-14 2012-04-04 毛世理 Quick microwave water heating valve
CN104214420A (en) * 2014-09-09 2014-12-17 中国科学院上海应用物理研究所 Cutoff and conduction system and method for high-temperature molten salt
CN204573265U (en) * 2015-04-21 2015-08-19 成都航利科技集团有限责任公司 A kind of intelligent electrical autocontrol valve for gas industry

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1393977A1 (en) * 1986-06-23 1988-05-07 П.A. Уаджар н и МоП. Наджар н Cock
CN2466466Y (en) * 2001-01-18 2001-12-19 江洪 Cold- and hot-water tap with electric water heating device
CN1499109A (en) * 2002-11-07 2004-05-26 Smc��ʽ���� Poppet valve with heater
CN101105261A (en) * 2006-07-13 2008-01-16 重庆川东阀门制造有限公司 Ice block free high pressure difference gas pressure regulator
PL389641A1 (en) * 2009-11-23 2011-06-06 Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy Safety valve, especially for the reaction chamber of microwave chemical reactor
CN201621349U (en) * 2010-02-09 2010-11-03 威海新光星电子有限公司 Automatic control device for gas conveyance
CN102401188A (en) * 2010-09-14 2012-04-04 毛世理 Quick microwave water heating valve
CN202065515U (en) * 2011-05-12 2011-12-07 上海耐腐阀门集团有限公司 Energy-saving type self-control fluorine-lined regulating valve
CN104214420A (en) * 2014-09-09 2014-12-17 中国科学院上海应用物理研究所 Cutoff and conduction system and method for high-temperature molten salt
CN204573265U (en) * 2015-04-21 2015-08-19 成都航利科技集团有限责任公司 A kind of intelligent electrical autocontrol valve for gas industry

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Effective date of registration: 20231220

Address after: 710000 25 / F, block B, Rongcheng Yungu, No. 57, Keji Third Road, Yanta District, Xi'an City, Shaanxi Province

Patentee after: Shaanxi Gas Group New Energy Development Co.,Ltd.

Address before: 101200 room 205-211526, No. 40, Fuqian West Street, Pinggu town, Pinggu District, Beijing (cluster registration)

Patentee before: BEIJING YONGBO TECHNOLOGY CO.,LTD.

Effective date of registration: 20231220

Address after: 101200 room 205-211526, No. 40, Fuqian West Street, Pinggu town, Pinggu District, Beijing (cluster registration)

Patentee after: BEIJING YONGBO TECHNOLOGY CO.,LTD.

Address before: Gehu Lake Road Wujin District 213164 Jiangsu city of Changzhou province No. 1

Patentee before: CHANGZHOU University