CN105259078A - Composite insulator detection system - Google Patents
Composite insulator detection system Download PDFInfo
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- CN105259078A CN105259078A CN201510734397.1A CN201510734397A CN105259078A CN 105259078 A CN105259078 A CN 105259078A CN 201510734397 A CN201510734397 A CN 201510734397A CN 105259078 A CN105259078 A CN 105259078A
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Abstract
The invention discloses a composite insulator detection system, which comprises an openable surrounded framework, an opening and closing locking mechanism, a moving mechanism, a detection mechanism and a battery control box, wherein the surrounded framework covers the outer side of the umbrella skirt of an insulator; the opening and closing locking mechanism is arranged at the outer side of the surrounded framework and controls the opening, the closing and the locking of the surrounded framework; the moving mechanism is fixedly arranged on the surrounded framework, and drives the surrounded framework to move along an insulator string; the detection mechanism is arranged at the outer side of the surrounded framework, and collects parameters such as the electric field of the insulator, the visible light or the infrared ray and the hydrophobicity; the battery control box is fixed on the surrounded framework, and provides electric energy for the moving mechanism, the detection mechanism and the opening closing and locking mechanism. The composite insulator detection system has the advantages that through detection modules for electric field detection, visible light detection, infrared ray detection, hydrophobic detection and the like, the overall insulator state diagnosis can be realized; the evaluation on the insulator is more objective and detailed. The route operation insulator state can be conveniently known in time.
Description
Technical field
The present invention relates to a kind of composite insulator detection system.
Background technology
Composite insulator due to lightweight, intensity is high, resistance to pollution flashover performance is strong, manufacture the many merits such as easy to maintenance and obtain in electric system and apply widely, has broken the long-term dominant position of porcelain, glass insulator.Along with composite insulator is in the increase promoting the use of and run the time limit of electric system, the Ageing of Insulators problem is more and more outstanding.In China, repeatedly composite insulator fault once occurred, and there is abnormal heating phenomenon in many composite insulators, and a lot of composite insulator fracture accident also occurred.But, because the structure of composite insulator is different from common insulator with used material, how tracking and monitoring is carried out to the operation conditions of composite insulator, become a great problem of each operation power unit and manufacturer, in improvement formula and manufacturing process, while raising compound inslation protonatomic mass, carry out targetedly run composite insulator detection technique research to ensureing that the safe operation tool of electrical network is of great significance.
Past, over nearly 20 years, constituent parts used multiple technologies to detect composite insulator, such as: observation, infrared hot temperature imaging detecting method, ultraviolet imaging detection method, sonic method etc.But all there is a lot of limitation in these methods, is not promoted in actual motion.
Chinese patent CN203376421U discloses a kind of composite insulator string live detection mechanism, comprise the insulating guide rail frame being arranged on composite insulator string periphery, be symmetrically arranged with at least two electric field probes above, pop one's head in by motor mechanism driving operation, described device also comprises probe displacement detector, export the position data detected to central processing unit, electric field probe exports electric field data after electric field intensity being detected, electric field data passes through amplifying circuit successively, analog to digital conversion circuit exports described central processing unit to, central processing unit is connected with the storer for preserving described electric field data and position data, and for demonstrating the display screen of position-electric field intensity graph of relation.By analysis, the focusing on of this patent gives the methods that electric field detects Data Collection and process, for concrete form and the not elaboration of soaring principle of work of travel mechanism, be that manually hand-held or autonomous cannot judge, do not provide and coordinate the effective mobile vehicle of electric field detecting method.
Chinese patent CN103822854A discloses a kind of Hydrophobicity of Composite Insulator live detection mechanism, be arranged on insulating bar by equipment operating bar is rotationally connected, by regulating the angle between insulating bar and equipment operating bar in use procedure, can make to be positioned at the equipment on equipment operating bar and the detection angles of insulator in the best, but also equipment can be made to be applicable to the detection of V-type Horn on Long Insulator String.This patent mainly describe a kind of and existing hydrophobic nature checkout equipment with the use of auxiliary lengthened insulative control lever, this control lever can be beneficial to detection by adjusting angle, and have locking device ensure equipment work time security.
The composite insulator string testing agency that above-mentioned patent proposes, one adopts electric field detection method, one adopts hydrophobic nature detection method, for the degree of ripeness of etection theory, society early there is definition, electric field detects mainly to be judged according to insulator electric field distribution plot, and hydrophobic nature utilizes water spray rating scale method to carry out outward appearance judgement.Above-mentioned patent CN203376421U describes the realization of electric field Cleaning Principle method, but do not provide effective travel mechanism, and patent CN103822854A mainly describes a kind of auxiliary operating lever of hydrophobic nature checkout equipment, and method for detecting hydrophobic mainly judges composite insulator external defects, composite insulator inherent vice cannot be detected.
Summary of the invention
The present invention, in order to solve the problem, proposes a kind of composite insulator detection system, and this device translational speed is fast, and detection efficiency is high, and principle is simple, and reach the standard grade easy to operate, security is good, can carry out composite insulator string live detection.
To achieve these goals, the present invention adopts following technical scheme:
A kind of composite insulator detection system, comprise can the encircling type framework of folding, opening-closing locking mechanism, travel mechanism, testing agency and battery control box, wherein:
Described encircling type framework is wrapped in outside insulator umbrella, opening-closing locking organization establishes is outside encircling type framework, control folding and the locking of embracing framework, described travel mechanism, be fixed on embracing framework, it is driven to move along insulator chain, described testing agency is arranged at outside embracing framework, gather the electric field of insulator, visible ray or infrared detection hydrophobic nature parameter, described battery control box is fixed on embracing framework, for travel mechanism, testing agency and opening-closing locking mechanism provide electric energy.
Described opening-closing locking mechanism, comprise folding motor, the first framework connecting plate, the second framework connecting plate and latch mechanism, wherein, described folding motor is fixed on the first framework connecting plate, the motor shaft of folding motor connects the second framework connecting plate, motor shaft rotarily drives the relative first framework rotating folding of the second framework, and described latch mechanism is fixed on the first framework connecting plate, is connected with folding motor coaxle.
Described latch mechanism, comprises steering wheel, swing arm, connecting rod, ratchet and pawl, wherein, described steering wheel is arranged on inside the first framework connecting plate, be connected with ratchet by swing arm, connecting rod successively, described ratchet is arranged on the second framework connecting plate, and coaxially fixes with open-and-close mechanism.
Described travel mechanism, comprises the moving assembly that two structures are identical, and described moving assembly comprises motor, thumb wheel and holder, wherein, motor is fixed on holder, and motor output shaft is connected with thumb wheel, thumb wheel rotates, and intersects and stirs composite insulator umbrella skirt root, drives embracing frame movement.
Described moving assembly is arranged at embracing framework both sides, is positioned at same plane with the axial line of embracing framework.
Further, described moving assembly is setting up and down, has angle between the connecting line of the thumb wheel of two moving assemblies and the axial line of embracing framework.
Preferably, along the circumferential direction multiple shift fork is evenly provided with outside described thumb wheel.
Described shift fork terminal end shape laminating compound inslation sub-pieces full skirt and sheath, be made up of insulating material.
Further, the motor of travel mechanism is one, and control two moving assembly associated movements, motor is installed on the moving assembly of side.
Described testing agency, comprise processor, processor controls water spray module ejection water column, visible image capturing head gathers video, be transferred to screen capture module, screen capture module is by the image transmitting of intercepting and capturing to processor, and microprocessor carries out process comparison, judgement to this image, if hydrophobic nature exceeds standard, then alarm module is reported to the police.
Described processor is connected with infrared camera, by controlling infrared camera Real-time Collection infrared video, judging whether insulator temperature exceeds standard, when temperature exceeding standard, sending a signal to infrared measurement of temperature alarm module, report to the police.
Described processor is communicated with electric-field sensor by RS485 signal, detects the electric field intensity of insulator surface, during intense anomaly, alerting signal is passed to electric field measurement alarm module then and there, report to the police.
Described battery control box comprises robot battery, stop means and cradle head camera device, is all fixed on embracing framework.
Beneficial effect of the present invention is:
(1) structure is simple to operation, reaches the standard grade conveniently, and adopt environmental protection insulator chain mode, good stability, utilizes upper and lower thumb wheel symmetric design, can ensure that the moment is blocked insulator chain sheath by mechanism, does not deflect and drop;
(2) adopt thumb wheel to stir the mode of walking up and down continuously, translational speed is fast, and operating efficiency is high, reduces operation labor intensity, reduces the activity duration, is conducive to reducing operating cost;
(3) institution secure locking property is good, adopts ratchet and pawl arrangement, has auto-lock function, and the anti-locking mechanism of energy is lower in working order surprisingly to drop, and improves the security of operation;
(4) automaticity is high, utilizes the rotational automatic folding of motor, is conducive to reduction is rolled off the production line operation easier, is convenient to the popularization and application of testing agency;
(5) carry live detection instrument and other integrated detecting device, detection efficiency is high, and accuracy is good, and wide adaptability, utilize travel mechanism's symmetric design and the feature do not deflected, the moving belt electro-detection of pendency, strain insulator and V-type string can be adapted to;
(6) diagnosis of comprehensive insulator state can be realized by detection modules such as electric field detection, visible detection, infrared detection, hydrophobic nature detections, more in detail objective to the evaluation of insulator.Be convenient to understand circuit in time and run insulator state.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention;
Fig. 2 is opening-closing locking structural scheme of mechanism of the present invention;
Fig. 3 is thumb wheel structural representation of the present invention;
Fig. 4 (a) is moving movement schematic diagram of the present invention;
Fig. 4 (b) is moving movement schematic diagram of the present invention;
Fig. 4 (c) is moving movement schematic diagram of the present invention;
Fig. 4 (d) is moving movement schematic diagram of the present invention;
Fig. 4 (e) is moving movement schematic diagram of the present invention;
Fig. 5 is detection system schematic diagram of the present invention.
Wherein, 1 embracing framework, 2 battery control boxs, 3 first semicircle frameworks, 4 travel mechanisms, 5 thumb wheels, 6 composite insulator strings, 7 second semicircle frameworks, 8 opening-closing locking mechanisms, 9 battery testers, 10 mobile motors, 11 shift forks, 12 first framework connecting plates, 13 steering wheels, 14 swing arms, 15 connecting rods, 16 ratchets, 17 second framework connecting plates, 18 ratchets, 19 folding motors, 20 sheaths, 21 full skirts, 31 wireless data sending transceiver modules, 32 microprocessors, 33 water spray modules, 34 visible image capturing heads, 35 screen capture module, 36 hydrophobic naturies exceed standard warning, 37 infrared cameras, 38 infrared measurement of temperature are reported to the police, 39 electric-field sensors, 40 electric field measurements are reported to the police.
Embodiment:
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1; composite insulator testing agency forms primarily of embracing framework 1, travel mechanism 4, opening-closing locking mechanism 8, live detection instrument 9 and battery control box 2; annular frame 1 is made up of the first semicircle framework 3 and the second semicircle framework 7; annular frame inner ring laminating composite insulator string 6 outer rim; first semicircle framework 3 and the second semicircle framework 7 are arranged symmetrically with; connected by opening-closing locking mechanism 8; open-and-close mechanism controls opening of annular frame and closes; it is locked at closure state that latch mechanism controls annular frame, plays safeguard protection effect.Travel mechanism 4 is made up of two same sections be arranged symmetrically with up and down, every part drives thumb wheel 5 to form by mobile motor 10 again, each thumb wheel 5 is made up of several shift forks 11, shift fork 11 end just in time can be enclosed within compound inslation sub-pieces sheath 20 and full skirt 21 junction, when mobile motor 10 works, can intersect and stir compound inslation sub-pieces and complete moving process.Live detection instrument can be electric field detector or other live detection equipment, be arranged on annular frame, the battery control box 2 being arranged on opposite side is monitored equipment such as travel mechanism 4, opening-closing locking mechanism 8, live detection instrument, cradle head cameras in real time by Signal transmissions.
As shown in Figure 2, opening-closing locking mechanism 8 is made up of two parts, one is the open-and-close mechanism driven by folding motor 19, one is the latch mechanism driven by steering wheel 13, folding motor 19 is arranged on the first framework connecting plate 12, output shaft drives the second framework connecting plate 17 to rotate around the first framework connecting plate 12 central shaft, and namely the second semicircle framework 7 gets around relative to the first semicircle framework 3 and closes motor 19 central shaft and rotate, opening and closed action of formation mechanism; Latch mechanism is mainly ratchet 18 ratchet 16 mechanism composition, it is inner that steering wheel 13 is arranged on the first framework connecting plate 12, output shaft connects swing arm 14, swing arm 14 is connected with ratchet 16 by connecting rod 15, ratchet 18 is fixed on the second framework connecting plate 17, with folding motor 19 output shaft concentric, when steering wheel 13 drives ratchet 16 to be stuck in ratchet 18 gear teeth groove, complete machine mechanism is just in locking state, and has self-locking performance.
As shown in Figure 5,32 microprocessors from the control signal of 31 wireless data sending transceiver modules, perform corresponding actions by RS232 Signal reception.32 Microprocessor S3C44B0X 33 are sprayed water module ejection taper water column, 34 visible image capturing heads gather video, are transferred to 35 screen capture module, and the image transmitting of intercepting and capturing is given 32 microprocessors by 35 screen capture module, 32 microprocessors carry out process comparison to this image, export 36 hydrophobic naturies and to exceed standard warning.32 microprocessors are by controlling infrared camera Real-time Collection infrared video, and give 38 infrared measurement of temperature alarm modules by this transmission of video, when temperature exceeding standard, 38 infrared measurement of temperature alarm modules send alerting signal.32 microprocessors are communicated with electric-field sensor by RS485 signal, alerting signal are passed to 40 electric field measurement alarm modules then and there during intense anomaly.
Composite insulator testing agency to carry out when insulator chain is reached the standard grade annular frame in opened condition, by being arranged on support interface on annular frame or hoisting ring device, undertaken operating near insulator chain by insulating bar or wheel skidding device, when complete machine mechanism is seated near composite insulator string 6, battery control box 2 sends order-driven folding motor 19 output shaft and rotates, folding motor 19 output shaft drives the second semicircle framework 7 to get around relative to the first semicircle framework 3 by the second framework connecting plate 17 and closes motor 19 and export axle center and rotate, completing mechanism's opening and closing movement makes annular frame encase composite insulator string 6, now, steering wheel 13 receives instruction swing arm 14 and rotates, by connecting rod 15 drive ratchet 16 to block to be fixed on the second framework win in succession on ratchet 18, now, annular frame is just locked on composite insulator string 6.
The initial position of travel mechanism about 4 two thumb wheel 5 is as shown in Fig. 4 (a), a wherein relative shift fork 11 in two thumb wheels 5 is in horizontality, when carrying out moving operation, mobile motor 10 receives instruction, upper and lower two thumb wheel 5 subtends are driven to rotate, two relative level shift forks 11 just stir compound inslation sub-pieces sheath 20 and full skirt 21 root downwards simultaneously, carry mechanism to move upward, when moving to position shown in Fig. 4 (b), upper and lower thumb wheel 5 has 2 pairs of shift forks 11 to block insulation sub-pieces sheath 20 and full skirt 21 root simultaneously, like this when thumb wheel 5 lower shift fork 11 is away from insulation sub-pieces full skirt 21 root, upper shift fork 11 still blocks sheath 20 and close full skirt 21 root, thumb wheel 5 continues to rotate, when moving to position shown in Fig. 4 (c), the upper shift fork 11 of two thumb wheels 5 moves to horizontal level, namely the climbing sports of a slice insulator is completed, two thumb wheels 5 continue relative rotation, insulation sub-pieces stirred in turn by shift fork 11, namely the climbing sports of bunch of insulator sheet is completed.
In mechanism's moving process, the live detection instrument carried such as electric field detector carries out electric field detection to composite insulator string 6, by background program, detection data mapping is become voltage distribution curves, judging the quality of composite insulator string 6, also can carry out live detection by carrying other live detection instrument.Meanwhile, mobile and detect in operation process, cradle head camera can to detect position, robot moving direction, the breakage on insulator chain surface, crackle and around gold utensil monitor, grasp the ruuning situation of robot in real time.
After detecting the end of job, insulating bar or hanging apparatus are arranged in composite insulator string 6 testing agency, then steering wheel 13 runs and ratchet 16 is shown ratchet 18 draw-in groove, folding motor 19 controls annular frame and opens to correct position, utilize insulating bar or hanging apparatus that composite insulator string 6 testing agency is put away insulator string, complete detection operation.
The present invention adopts thumb wheel 5 continous way travel mechanism 4, and operating speed is fast, utilizes shift fork 11 block composite insulator string 6 sheath 20 and full skirt 21 root and be symmetrical arranged, anti-locking mechanism deflection, utilizes ratchet 18 ratchet 16 latch mechanism, has self-locking property, can to drop insulator chain by anti-locking mechanism, adopt the modes such as electric field detection, detection efficiency is high, and in mechanism, string operation is simple, translational speed is steady, accuracy in detection is high, and can carry out hot line job, can adapt to the detection of pendency, strain insulator and V-type string.
The present invention is by realizing the diagnosis of comprehensive insulator state to the detection module such as electric field detection, visible detection, infrared detection, hydrophobic nature detection of composite insulator string 6, have and detect comprehensively, to report to the police advantage timely, more in detail objective to the evaluation of insulator.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (10)
1. a composite insulator detection system, is characterized in that: comprise can the encircling type framework of folding, opening-closing locking mechanism, travel mechanism, testing agency and battery control box, wherein:
Described encircling type framework is wrapped in outside insulator umbrella, opening-closing locking organization establishes is outside encircling type framework, control folding and the locking of embracing framework, described travel mechanism, be fixed on embracing framework, it is driven to move along insulator chain, described testing agency is arranged at outside embracing framework, gather the electric field of insulator, visible ray or infrared detection hydrophobic nature parameter, described battery control box is fixed on embracing framework, for travel mechanism, testing agency and opening-closing locking mechanism provide electric energy.
2. a kind of composite insulator detection system as claimed in claim 1, it is characterized in that: described opening-closing locking mechanism, comprise folding motor, the first framework connecting plate, the second framework connecting plate and latch mechanism, wherein, described folding motor is fixed on the first framework connecting plate, and the motor shaft of folding motor connects the second framework connecting plate, and motor shaft rotarily drives the relative first framework rotating folding of the second framework, described latch mechanism is fixed on the first framework connecting plate, is connected with folding motor coaxle.
3. a kind of composite insulator detection system as claimed in claim 1, it is characterized in that: described latch mechanism, comprise steering wheel, swing arm, connecting rod, ratchet and pawl, wherein, described steering wheel is arranged on inside the first framework connecting plate, be connected with ratchet by swing arm, connecting rod successively, described ratchet is arranged on the second framework connecting plate, and coaxially fixes with open-and-close mechanism.
4. a kind of composite insulator detection system as claimed in claim 1, it is characterized in that: described travel mechanism, comprise the moving assembly that two structures are identical, described moving assembly comprises motor, thumb wheel and holder, and wherein, motor is fixed on holder, motor output shaft is connected with thumb wheel, thumb wheel rotates, and intersects and stirs composite insulator umbrella skirt root, drives embracing frame movement.
5. a kind of composite insulator detection system as claimed in claim 1, is characterized in that: described moving assembly is arranged at embracing framework both sides, is positioned at same plane with the axial line of embracing framework; Described moving assembly is setting up and down, has angle between the connecting line of the thumb wheel of two moving assemblies and the axial line of embracing framework.
6. a kind of composite insulator detection system as claimed in claim 1, is characterized in that: be along the circumferential direction evenly provided with multiple shift fork outside described thumb wheel, and shift fork terminal end shape laminating compound inslation sub-pieces full skirt and sheath, be made up of insulating material.
7. a kind of composite insulator detection system as claimed in claim 1, is characterized in that: the motor of travel mechanism is one, and control two moving assembly associated movements, motor is installed on the moving assembly of side.
8. a kind of composite insulator detection system as claimed in claim 1, it is characterized in that: described testing agency, comprise processor, processor controls water spray module ejection water column, and visible image capturing head gathers video, is transferred to screen capture module, screen capture module by intercept and capture image transmitting to processor, microprocessor carries out process comparison, judgement to this image, if hydrophobic nature exceeds standard, then alarm module is reported to the police.
9. a kind of composite insulator detection system as claimed in claim 8, it is characterized in that: described processor is connected with infrared camera, by controlling infrared camera Real-time Collection infrared video, judge whether insulator temperature exceeds standard, when temperature exceeding standard, send a signal to infrared measurement of temperature alarm module, report to the police.
10. a kind of composite insulator detection system as claimed in claim 8, it is characterized in that: described processor is communicated with electric-field sensor by RS485 signal, detect the electric field intensity of insulator surface, during intense anomaly, alerting signal is passed to electric field measurement alarm module then and there, report to the police.
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| CN201510734397.1A CN105259078B (en) | 2015-11-02 | 2015-11-02 | A kind of composite insulator detecting system |
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| CN201510734397.1A CN105259078B (en) | 2015-11-02 | 2015-11-02 | A kind of composite insulator detecting system |
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| CN106602461A (en) * | 2016-12-05 | 2017-04-26 | 东北大学 | Turnover type metamorphic moving mechanism |
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| CN109837586A (en) * | 2019-03-26 | 2019-06-04 | 浙江晶盛机电股份有限公司 | A kind of anti-fall additional locking devices for monocrystalline silicon growing furnace crucible hoisting frame |
| CN111929478A (en) * | 2020-09-15 | 2020-11-13 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Full-angle infrared detection test mechanical device for composite insulator |
| CN115620211A (en) * | 2022-12-06 | 2023-01-17 | 广东祥利科技有限公司 | Performance data processing method and system of flame-retardant low-smoke halogen-free sheath |
| CN116973609A (en) * | 2023-09-21 | 2023-10-31 | 国网辽宁省电力有限公司 | Power grid pillar composite insulator detection device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106602461A (en) * | 2016-12-05 | 2017-04-26 | 东北大学 | Turnover type metamorphic moving mechanism |
| CN106602461B (en) * | 2016-12-05 | 2018-06-26 | 东北大学 | Convertible Bian Bao mobile mechanisms |
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| CN109837586A (en) * | 2019-03-26 | 2019-06-04 | 浙江晶盛机电股份有限公司 | A kind of anti-fall additional locking devices for monocrystalline silicon growing furnace crucible hoisting frame |
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| CN111929478A (en) * | 2020-09-15 | 2020-11-13 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Full-angle infrared detection test mechanical device for composite insulator |
| CN111929478B (en) * | 2020-09-15 | 2022-08-19 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Full-angle infrared detection test mechanical device for composite insulator |
| CN115620211A (en) * | 2022-12-06 | 2023-01-17 | 广东祥利科技有限公司 | Performance data processing method and system of flame-retardant low-smoke halogen-free sheath |
| CN116973609A (en) * | 2023-09-21 | 2023-10-31 | 国网辽宁省电力有限公司 | Power grid pillar composite insulator detection device |
| CN116973609B (en) * | 2023-09-21 | 2023-12-01 | 国网辽宁省电力有限公司 | Power grid pillar composite insulator detection device |
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Address after: Wang Yue Central Road Ji'nan City, Shandong province 250002 City No. 2000 Co-patentee after: National Network Intelligent Technology Co., Ltd. Patentee after: Electric Power Research Institute of State Grid Shandong Electric Power Company Co-patentee after: State Grid Corporation of China Address before: Wang Yue Central Road Ji'nan City, Shandong province 250002 City No. 2000 Co-patentee before: Shandong Luneng Intelligent Technology Co., Ltd. Patentee before: Electric Power Research Institute of State Grid Shandong Electric Power Company Co-patentee before: State Grid Corporation of China |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201029 Address after: 250101 Electric Power Intelligent Robot Production Project 101 in Jinan City, Shandong Province, South of Feiyue Avenue and East of No. 26 Road (ICT Industrial Park) Patentee after: National Network Intelligent Technology Co.,Ltd. Address before: Wang Yue Central Road Ji'nan City, Shandong province 250002 City No. 2000 Patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee before: National Network Intelligent Technology Co.,Ltd. Patentee before: STATE GRID CORPORATION OF CHINA |