CN112133592B - Quick cut-off type arc extinguishing switch - Google Patents
Quick cut-off type arc extinguishing switch Download PDFInfo
- Publication number
- CN112133592B CN112133592B CN202011334357.5A CN202011334357A CN112133592B CN 112133592 B CN112133592 B CN 112133592B CN 202011334357 A CN202011334357 A CN 202011334357A CN 112133592 B CN112133592 B CN 112133592B
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- fixedly connected
- arc
- inner cylinder
- plate
- sliding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/22—Selection of fluids for arc-extinguishing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/38—Plug-and-socket contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H33/10—Metal parts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a fast cut-off type arc extinguishing switch which comprises a bottom plate, wherein a first fixing frame and a second fixing frame are fixedly connected to two ends of the bottom plate, a first wiring terminal is fixedly connected to the second fixing frame through a first insulating column, a moving contact is hinged to the upper end face of the first wiring terminal, the first fixing frame is fixedly connected to the second wiring terminal through the second insulating column, a static contact is fixedly connected to the second wiring terminal, an arc extinguishing cover fixedly connected through a third fixing frame is arranged on one side of the static contact, and a control and arc blowing mechanism is installed on the bottom plate. In the invention, in the process of controlling the arc extinguishing switch to be switched off by the control and arc blowing mechanism, the electric arc generated by switching on and off can be blown out, the electric arc is sent into the interior of the arc extinguishing cover by using air current, the outer cylinder seals the air pipe and the exhaust head by the aid of the reset spring, the inner cylinder is upwards bounced by the aid of the power spring to generate compressed air, and the switch is stably communicated and conveniently switched off by virtue of the cooperation of the pin and the limiting spring.
Description
Technical Field
The invention relates to the technical field of switches, in particular to a quick cut-off type arc extinguishing switch.
Background
The arc-extinguishing switch uses air as an insulating medium, has strong arc-extinguishing capability, simple structure, low cost and convenient maintenance, and is suitable for being used as a circuit breaker in medium and high voltage power systems.
Arc extinguishing switches are generally classified into three types: there are electronic electromagnetic arc-extinguishing switch, oil-extinguishing switch and air-pressing arc-extinguishing load switch.
The electronic electromagnetic arc-extinguishing switch consists of static contact, moving contact and electronic arc-extinguishing unit. The static contact is electrically connected with the arc extinguishing device, and the moving contact is electrically connected with and disconnected from the auxiliary contact of the arc extinguishing device. When the switch operates, the arc extinguishing device is in an open circuit state without loss, and when the switch operates in an open circuit, the moving contact guides the electric arc to the arc extinguishing chamber through the auxiliary contact for arc extinguishing. The switch uses air as an insulating medium, has small volume, simple structure, low cost and convenient maintenance, and is suitable for circuit breakers of medium and high voltage lines.
The oil type arc-extinguishing switch is especially suitable for AC motor. The bottom plate is provided with a stationary contact, the pressing plate is provided with a movable contact, the lower end of the stand column is arranged on the bottom plate, the pressing plate is arranged on the stand column, the stand column is sleeved with a spring to separate the pressing plate from the bottom plate, the lower end of the pressing rod is arranged on the pressing plate, the bottom plate, the pressing plate, the stand column and the lower half part of the pressing rod are immersed in oil in the oil tank, and the upper end of the pressing rod penetrates through the oil tank cover to be. It does not generate electric arc, does not hurt human body, does not burn out contact, is safe and convenient to use, has simple structure, low cost and easy production and manufacture.
The air-pressing arc-extinguishing load switch is characterized by that its upper and lower insulating sleeves are respectively placed on the upper and lower through holes of the shell body, in the upper and lower through holes an upper and lower static main contact is respectively set, a fixed piston is placed on the lower static main contact, a moving contact is cover-mounted on the fixed piston and contacted with lower static main contact, the operating shafts of grounding knife and load switch are symmetrically placed on two sides of moving contact, the moving contact can be driven by rocker and crank of operating shaft of load switch to make up-and-down slide so as to implement opening and closing of switch, and when it is moved downwards, the sulfur hexafluoride gas in the compression sleeve can be quickly sprayed upwards to implement arc-extinguishing. The load switch has the advantages of simple operation, good arc extinction, reliable operation and compact volume.
However, sulfur hexafluoride gas or other gases are installed in a compression sleeve of the existing compressed air type arc extinguishing switch, certain cost is required for installing the gases, the maintenance cost in the using process is high, the consistency of switch disconnection and arc extinguishing by blowing is poor, electric arcs cannot be eliminated in time, and potential safety hazards exist.
Therefore, the invention provides a quick-cut type arc extinguishing switch.
Disclosure of Invention
The invention aims to: in order to solve the problems, a quick-cut type arc extinguishing switch is provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fast cut-off type arc extinguishing switch comprises a bottom plate, wherein a first fixing frame and a second fixing frame are fixedly connected to two ends of the bottom plate, a first connecting terminal is fixedly connected to the second fixing frame through a first insulating column, a moving contact is hinged to the upper end face of the first connecting terminal, a second connecting terminal is fixedly connected to the first fixing frame through a second insulating column, a static contact is fixedly connected to the second connecting terminal, an arc extinguishing cover fixedly connected with the third fixing frame is arranged on one side of the static contact, a control and arc blowing mechanism is installed on the bottom plate and provided with a shell installed on the lower end face of the bottom plate, the shell is fixedly connected with a top plate through a first guide rod and a second guide rod, an air pipe is installed on the top plate, a circular pipe is fixedly connected to the shell, an inner pipe in sliding connection, the inner cylinder is sleeved with an outer cylinder which is connected with the inner cylinder in a sliding way, the top end of the outer cylinder is provided with an exhaust head which is inserted in the air pipe, the outer side wall of the outer cylinder is provided with a sliding block and a guide plate, the sliding block is connected on the second guide rod in a sliding way, the lower part of the sliding block is provided with a return spring which is sleeved on the second guide rod, the circular tube is sleeved with a power spring which is abutted against the lower end of the inner tube, the guide plate is in sliding fit with a slide rail fixedly connected with the lower end face of the top plate, a sliding sleeve is sleeved on the first guide rod, the sliding sleeve is fixedly connected with the bottom end of the inner cylinder through a plate, the upper end surface of the shell is fixedly connected with a limiting block, a pin horizontally penetrates through the inside of the limiting block, the pin is provided with a sliding column and a limit spring sleeved on the pin, the limit block is screwed and connected with a sealing cover abutting against the limit spring, the sliding sleeve is hinged to the middle position of the moving contact through a push-pull rod, and the push-pull rod is provided with a third insulating column.
As a further description of the above technical solution:
the moving contact is composed of two identical clamping pieces.
As a further description of the above technical solution:
the static contact is composed of a horizontally arranged protection plate and a butting piece welded on the protection plate.
As a further description of the above technical solution:
the arc extinguishing cover consists of an external fixing frame and a metal sheet arranged inside the fixing frame.
As a further description of the above technical solution:
the plate is provided with a through hole penetrating through the limiting block, the edge of the inner cylinder is provided with a clamping block, and the clamping block is positioned on one side of the through hole.
As a further description of the above technical solution:
and one end of the pin, which is far away from the inner cylinder, is welded with a first hand lever.
As a further description of the above technical solution:
and a second hand lever penetrating through the bottom plate is fixedly connected to the sliding block.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. in the invention, in the process of controlling the arc extinguishing switch to be switched off by the control and arc blowing mechanism, the electric arc generated by switching on and off can be blown out, the electric arc is sent into the interior of the arc extinguishing cover by using air current, the outer cylinder seals the air pipe and the exhaust head by the aid of the reset spring, the inner cylinder is upwards bounced by the aid of the power spring to generate compressed air, and the switch is stably communicated and conveniently switched off by virtue of the cooperation of the pin and the limiting spring.
2. According to the invention, the moving contact adopts the arrangement of double clamping pieces, the static contact consists of the protection plate and the resisting piece, the resisting piece is inserted in the clamping piece, the switch is stably conducted, the protection plate prevents electric arcs from moving downwards, the arc extinguishing cover and the air pipe are distributed on two sides of the resisting part, the amount of compressed air generated by the switch is large, electric arcs are rapidly and synchronously eliminated, the outer cylinder and the inner cylinder are in sliding fit, the circular pipe and the inner cylinder are in sliding fit, when the inner cylinder is pushed upwards by the piston head, leakage cannot occur, the amount of compressed air is sufficient, the exhaust pipe is inserted into the air pipe, and the exhaust pipe is.
3. According to the invention, the sliding rail and the guide piece are arranged, so that the outer barrel can stably move in the vertical direction, the switch is communicated with a circuit by pulling the hand lever, the first hand lever can be connected with a power device in the prior art, the arc extinguishing switch is quickly communicated, the second hand lever pulls the pin to be in contact with the limit of the inner barrel, and the switch is conveniently disconnected.
Drawings
FIG. 1 illustrates a schematic front view structure provided according to an embodiment of the present invention;
FIG. 2 illustrates a schematic view of a partial cross-sectional structure from a front view provided in accordance with an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a top view structure of a fixed contact and a movable contact according to an embodiment of the present invention;
figure 4 shows a schematic diagram of a side view of an arc chute provided in accordance with an embodiment of the invention;
FIG. 5 is a schematic diagram illustrating an enlarged structure of a part B provided in accordance with an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating an enlarged structure of a part C provided in accordance with an embodiment of the present invention.
Illustration of the drawings:
1. a base plate; 2. a first fixing frame; 3. a second fixing frame; 4. a first insulating column; 5. a first wiring terminal; 6. a moving contact; 61. a clip; 7. a second insulating column; 8. a second wiring terminal; 9. static contact; 91. a protection plate; 92. a resisting sheet; 10. a third fixing frame; 11. an arc extinguishing chamber; 111. a fixing frame; 112. a metal sheet; 12. a control and arc blowing mechanism; 13. a housing; 14. a first guide rod; 15. a second guide rod; 16. a top plate; 17. a circular tube; 18. an inner barrel; 181. a clamping block; 19. an outer cylinder; 20. a piston head; 21. an exhaust head; 22. a slider; 23. a guide plate; 24. a slide rail; 25. a return spring; 26. a power spring; 27. a limiting block; 28. a pin; 29. a sliding post; 30. a limiting spring; 31. sealing the cover; 32. a first hand lever; 33. a sliding sleeve; 34. an air tube; 35. a push-pull rod; 36. a third insulating column; 37. a second hand lever; 38. a plate member.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a fast cut-off type arc extinguishing switch comprises a bottom plate 1, a first fixing frame 2 and a second fixing frame 3 are fixedly connected to two ends of the bottom plate 1, a first connecting terminal 5 is fixedly connected to the second fixing frame 3 through a first insulating column 4, a moving contact 6 is hinged to the upper end face of the first connecting terminal 5, a second connecting terminal 8 is fixedly connected to the first fixing frame 2 through a second insulating column 7, a static contact 9 is fixedly connected to the second connecting terminal 8, an arc extinguishing cover 11 fixedly connected to one side of the static contact 9 through a third fixing frame 10 is arranged, a control and arc blowing mechanism 12 is mounted on the bottom plate 1, the control and arc blowing mechanism 12 is provided with a shell 13 mounted on the lower end face of the bottom plate 1, the shell 13 is fixedly connected to a top plate 16 through a first guide rod 14 and a second guide rod 15, an air pipe 34 is mounted on the top plate 16, a, the top end of the inner cylinder 18 is provided with a piston head 20, the inner cylinder 18 is sleeved with an outer cylinder 19 which is connected with the inner cylinder in a sliding way, the top end of the outer cylinder 19 is provided with an exhaust head 21 which is inserted in an air pipe 34, the outer side wall of the outer cylinder 19 is provided with a sliding block 22 and a guide plate 23, the sliding block 22 is connected on a second guide rod 15 in a sliding way, the lower part of the sliding block 22 is provided with a return spring 25 which is sleeved on the second guide rod 15, the round pipe 17 is sleeved with a power spring 26 which is abutted against the lower end of the inner cylinder 18, the guide plate 23 is matched with a sliding rail 24 which is fixedly connected on the lower end surface of the top plate 16 in a sliding way, the first guide rod 14 is sleeved with a sliding sleeve 33, the sliding sleeve 33 is fixedly connected with the bottom end of the inner cylinder 18 through a plate 38, the upper end surface of the shell 13 is, the sliding sleeve 33 is hinged at the middle position of the movable contact 6 through a push-pull rod 35, and an insulating column III 36 is arranged on the push-pull rod 35.
The moving contact 6 is composed of two identical clamping pieces 61, the clamping pieces 61 are conductive metal plates, and the metal plates are connected in a riveting mode.
The static contact 9 is composed of a horizontally arranged protection plate 91 and a resisting sheet 92 welded on the protection plate 91, and the protection plate 91 and the resisting sheet 92 on the static contact 9 are both conductive metal plates.
The arc-extinguishing chamber 11 is composed of an outer fixing frame 111 and a metal sheet 112 mounted inside the fixing frame 111, and the metal sheet 112 is a copper plate or a chromium-plated steel plate.
The plate 38 has a through hole penetrating the stopper 27, the edge of the inner cylinder 18 has a latch 181 and the latch 181 is located at one side of the through hole, and the plate 38 is welded between the inner cylinder 18 and the sliding sleeve 33.
The end of the pin 28 remote from the inner barrel 18 is welded with a first hand lever 32.
A second hand lever 37 penetrating through the bottom plate 1 is fixedly connected to the sliding block 22.
The working principle is as follows: when the device is used, the hand lever II 37 is pulled downwards, the outer cylinder 19 is fixedly connected with the sliding block 22 and moves downwards at the same time, the outer cylinder 19 presses the inner cylinder 18 downwards, the fixture block 181 on the inner cylinder 18 extrudes the pin 28, the pin 28 horizontally slides in the limiting block 27 through the sliding column 29, the sliding column 29 is a regular prism, the pin 28 is prevented from rotating, the fixture block 181 crosses the pin 28, the limiting spring 30 pushes the pin 28 to reset, the inner cylinder 18 is firmly clamped, at the moment, the power spring 26 is in a compressed state, the resetting spring 25 enables the outer cylinder 19 to move upwards, the exhaust head 21 is firmly inserted in the air pipe 34, the plate 38 connects the sliding sleeve 33 with the inner cylinder 18, the sliding sleeve 33 and the inner cylinder 18 perform synchronous movement in the vertical direction, the sliding sleeve 33 controls the movable contact head 6 and the fixed contact 9 to open and close through the push-pull rod 35, the hand lever II 37 is pulled, the power spring 26, upwards compressed air makes the air pass through exhaust head 21, trachea 34, and then acts on the position between static contact 9 and moving contact 6, and moving contact 6 opens and shuts and the gas injection process is synchronous, and electric arc is blown into the inside of arc-extinguishing chamber 11, and the setting of sheetmetal 112 for electric arc is separated and is weakened, and the arc is blown in the twinkling of an eye to the switch disconnection of arc extinguishing, and the arc blowing is good with the disconnection uniformity, and the arc extinguishing effect is better.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The utility model provides a quick cut-off formula arc extinguishing switch, includes bottom plate (1), its characterized in that, the both ends fixedly connected with mount (2) and mount two (3) of bottom plate (1), mount two (3) are through insulating column (4) fixedly connected with binding post (5) and the up end of binding post (5) articulates there is moving contact (6), mount one (2) are through insulating column two (7) fixedly connected with binding post two (8) and fixedly connected with static contact (9) on binding post two (8), one side of static contact (9) has arc extinguishing chamber (11) through mount three (10) fixed connection, install control and arc blowing mechanism (12) on bottom plate (1), control and arc blowing mechanism (12) have casing (13) of installing terminal surface under bottom plate (1), casing (13) are through guide bar one (14) and guide bar two (15) fixedly connected with roof (16) ) And an air pipe (34) is installed on the top plate (16), a round pipe (17) is fixedly connected to the shell (13), an inner cylinder (18) in sliding connection with the round pipe (17) is sleeved on the round pipe (17), a piston head (20) is installed at the top end of the inner cylinder (18), an outer cylinder (19) in sliding connection with the inner cylinder (18) is sleeved on the inner cylinder (18), an exhaust head (21) inserted inside the air pipe (34) is arranged at the top end of the outer cylinder (19), a sliding block (22) and a guide plate (23) are arranged on the outer side wall of the outer cylinder (19), the sliding block (22) is in sliding connection with the guide rod II (15), a reset spring (25) sleeved on the guide rod II (15) is arranged at the lower part of the sliding block (22), a power spring (26) abutted to the lower end of the inner cylinder (18) is sleeved on the round pipe (17), and a sliding rail (24) fixedly, a sliding sleeve (33) is sleeved on the guide rod I (14), the sliding sleeve (33) is fixedly connected with the bottom end of the inner cylinder (18) through a plate (38), the upper end surface of the shell (13) is fixedly connected with a limiting block (27), a pin (28) horizontally penetrates through the inside of the limiting block (27), the pin (28) is provided with a sliding column (29) and a limiting spring (30) sleeved on the pin (28), a sealing cover (31) which is abutted against a limit spring (30) is connected on the limit block (27) in a rotating way, the sliding sleeve (33) is hinged at the middle position of the moving contact (6) through a push-pull rod (35), an insulating column III (36) is arranged on the push-pull rod (35), the plate (38) is provided with a through hole penetrating through the limiting block (27), the edge of the inner cylinder (18) is provided with a clamping block (181), and the clamping block (181) is positioned on one side of the through hole.
2. A rapid-cut-off arc interrupter switch according to claim 1 wherein the movable contact (6) is formed by two identical clamping pieces (61).
3. The fast switch-off arc extinguisher according to claim 1, characterized in that the static contact (9) is composed of a horizontally arranged protection plate (91) and a pressing sheet (92) welded on the protection plate (91).
4. A rapid-cutting arc extinguishing switch according to claim 1, characterized in that the arc extinguishing chamber (11) consists of an outer fixed frame (111) and a metal sheet (112) mounted inside the fixed frame (111).
5. A quick disconnect type arc extinguisher switch according to claim 1 wherein a first handle bar (32) is welded to the end of the pin (28) remote from the inner barrel (18).
6. A rapid-cutting-off arc-extinguishing switch according to claim 1, characterized in that a second hand lever (37) penetrating the base plate (1) is fixedly connected to the sliding block (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011334357.5A CN112133592B (en) | 2020-11-25 | 2020-11-25 | Quick cut-off type arc extinguishing switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011334357.5A CN112133592B (en) | 2020-11-25 | 2020-11-25 | Quick cut-off type arc extinguishing switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112133592A CN112133592A (en) | 2020-12-25 |
| CN112133592B true CN112133592B (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011334357.5A Active CN112133592B (en) | 2020-11-25 | 2020-11-25 | Quick cut-off type arc extinguishing switch |
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| CN (1) | CN112133592B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014115718A1 (en) * | 2014-10-29 | 2016-05-04 | Abb Technology Ag | System and method for ensuring a mixing ratio of an insulating gas mixture for a gas-insulated electrical high-voltage device |
| ES2929798T3 (en) * | 2017-06-29 | 2022-12-01 | Abb Schweiz Ag | Gas-insulated load-break switch and switchgear comprising a gas-insulated load-break switch |
| CN209357661U (en) * | 2018-05-16 | 2019-09-06 | 陕西盘庚能源技术有限公司 | A kind of overvoltage protection high voltage load disconnecting switch |
| CN209843600U (en) * | 2019-03-28 | 2019-12-24 | 江苏省徐州技师学院 | Novel oil-cooled arc extinguishing breaker structure |
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2020
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Effective date of registration: 20210427 Address after: No.441, Kaichuang Road, Jinlu Industrial Zone, beibaixiang Town, Yueqing City, Wenzhou City, Zhejiang Province 325600 Applicant after: Yueqing Qinli Electric Appliance Co.,Ltd. Address before: 210000 Wu Tonglin 5 building, Jiangning Development Zone, 58 Sheng Tai Road, Jiangning District, Nanjing, Jiangsu. Applicant before: Nanjing Aike sailante Environmental Protection Technology Co.,Ltd. |
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Effective date of registration: 20230510 Address after: 325000 No. 291, weishiqi Road, Yueqing Economic Development Zone, Yueqing City, Wenzhou City, Zhejiang Province Patentee after: Zhejiang Qinda Electric Technology Co.,Ltd. Address before: No.441, Kaichuang Road, Jinlu Industrial Zone, beibaixiang Town, Yueqing City, Wenzhou City, Zhejiang Province 325600 Patentee before: Yueqing Qinli Electric Appliance Co.,Ltd. |
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