CN114696291A - Leakage prevention device of power protector - Google Patents
Leakage prevention device of power protector Download PDFInfo
- Publication number
- CN114696291A CN114696291A CN202210384812.5A CN202210384812A CN114696291A CN 114696291 A CN114696291 A CN 114696291A CN 202210384812 A CN202210384812 A CN 202210384812A CN 114696291 A CN114696291 A CN 114696291A
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- China
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- device body
- gear
- frame
- prevention device
- leakage prevention
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
Abstract
An electric leakage prevention device of an electric power protector relates to the technical field of electric power. The invention aims to solve the problems that the existing leakage prevention device is complex to take out and install, low in dismounting efficiency and poor in heat dissipation performance. The invention discloses an electric leakage prevention device, which is characterized in that a pop-up component is fixed on the outer wall of one side of the electric leakage prevention device body, a connecting component is fixed on the outer wall of one side of the electric leakage prevention device body, and a heat dissipation component is fixed on the inner wall of one side of the electric leakage prevention device body. The transparent protective cover is rotatably arranged on the outer wall of one end of the electric leakage prevention device body and can protect the electric leakage prevention device body. The electric leakage prevention device body is located the inner wall of transparent protection cover one side and symmetrically inlays and install control button, and this control button control power starts or closes and pops out the subassembly, can carry out on-off control to it, and convenience of customers uses.
Description
Technical Field
The invention belongs to the technical field of electric power, and particularly relates to an anti-creeping device.
Background
The power protector is a device for providing power utilization safety protection for the electric appliance, an intelligent high-voltage prevention device is arranged in the power protector, and the internal protection device can be intelligently started under the abnormal condition that the electric appliance is subjected to instantaneous high voltage, so that the power utilization safety of the rear-end electric appliance is ensured. When a protector has an electric leakage fault, an electric leakage prevention device is required. However, the conventional leakage prevention device has many defects, such as:
1. when the dismounting is carried out, the dismounting is not provided with the pop-up structure, and the taking-out is troublesome, so that the dismounting efficiency is reduced;
2. during installation, bolts are needed for fixing, so that the installation process is more complicated, the installation time is prolonged, and the installation efficiency is reduced;
3. the equipment is generally sealed and is not easy to dissipate heat, so that the heat dissipation effect is general, and the use effect of the device is influenced.
Disclosure of Invention
The invention provides a leakage prevention device of a power protector, aiming at solving the problems that the existing leakage prevention device is complex to take out and install, low in dismounting efficiency and poor in heat dissipation performance.
A leakage prevention device of an electric power protector comprises a leakage prevention device body 1, an ejection assembly 2, a connecting assembly 3 and a heat dissipation assembly 4, wherein the heat dissipation assembly 4 is positioned inside the leakage prevention device body 1 and used for dissipating heat of the leakage prevention device body 1;
the pop-up assembly 2 comprises a frame 206 and two sets of moving parts, the moving parts comprising: a rotating shaft 202, a torsion spring 203, a first gear 204, an electromagnet block 205, at least one sliding plate 207 and a first rack 209,
the frame 206 is a U-shaped metal frame structure, the leakage preventing device body 1 is arranged in the frame 206 from the opening of the frame 206, two groups of moving parts are respectively arranged on two inner side walls opposite to the frame 206, one end of the rotating shaft 202 and the electromagnet block 205 are both fixed on the outer side wall of the leakage preventing device body 1, the outer side wall is opposite to the frame 206, the first gear 204 is rotatably connected with the other end of the rotating shaft 202, the torsion spring 203 is sleeved outside the rotating shaft 202, two ends of the torsion spring 203 are respectively fixedly connected with the outer side wall of the leakage preventing device body 1 and the first gear 204, the sliding plate 207 and the first rack 209 are both fixed on the inner side wall of the frame 206, the first gear 204 is meshed with the first rack 209, at least one sliding groove 201 is arranged on the outer side wall of the leakage preventing device body 1 opposite to the frame 206, the free end of the sliding plate 207 is embedded in the sliding groove 201, And can slide along the sliding groove 201;
the connecting assembly 3 includes: a first motor 301, a second gear 302, a rotating rod 305, a third gear 307, a fourth gear 308, two second gears 309 and two sliding blocks 310,
the connecting assembly 3 is located at the bottom of the frame 206, the bottom is a side wall facing the end of the body 1, two parallel lifting grooves 304 are formed at the inner side of the bottom of the frame 206, two sliding blocks 310 are respectively embedded in the two lifting grooves 304, two second racks 309 are respectively fixedly connected with the two sliding blocks 310, a rotating hole 303 is formed between the two lifting grooves 304, the rotating rod 305 passes through the rotating hole 303, the fourth gear 308 is located at the inner side of the bottom of the frame 206, and is fixedly connected with one end of the rotating rod 305, the second gear 302 and the third gear 307 are both positioned at the outer side of the bottom of the frame 206, the third gear 307 is fixedly connected with the other end of the rotating rod 305, the first motor 301 is embedded at the bottom of the frame 206, the output rod of the first motor 301 is fixedly connected with the second gear 302, the second gear 302 and the third gear 307 are mutually engaged, and the two second racks 309 are radially and symmetrically arranged at two sides of the fourth gear 308 and are mutually engaged with the fourth gear 308.
Further, the heat sink 4 includes: a connection plate 405, a plurality of heat dissipation plates 406, and two sets of driving parts,
the inside mounting groove 401 that leaves of electric leakage preventing device body 1, radiator unit 4 is located mounting groove 401, a plurality of heating panels 406 evenly distributed fixes on connecting plate 405, it has a plurality of thermovents 402 to open on the outer wall of electric leakage preventing device body 1, a plurality of thermovents 402 respectively with a plurality of heating panels 406 one-to-one, two sets of drive portions are fixed respectively in the both sides of connecting plate 405, two sets of drive portions all are used for driving connecting plate 405 with a plurality of heating panels 406 from the thermovents 402 who corresponds push out or pull back.
Further, each set of driving parts includes: a second motor 403, an eccentric rotary wheel 404 and a spring 407,
the output shaft of the second motor 403 is fixedly connected to the eccentric of the eccentric rotating wheel 404, the eccentric rotating wheel 404 is located between the connecting plate 405 and the inner wall of the leakage preventing device body 1 and is in contact with the connecting plate and the inner wall of the leakage preventing device body 1, and two ends of the spring 407 are connected to the connecting plate 405 and the inner wall of the leakage preventing device body 1, respectively.
Further, the pop-up assembly 2 further includes two limit plates 208, and the two limit plates 208 are respectively fixed at the ends of two opposite inner side walls of the frame 206.
Further, the connecting assembly 3 further includes two limiting discs 306, and the two limiting discs 306 are both fixedly sleeved on the rotating rod 305 and respectively located at two sides of the bottom of the frame 206.
Further, a transparent cover 5 is attached to an end of the casing of the leakage preventing device body 1 that opens toward the frame 206.
Further, the first motor 301 is a servo motor.
Further, the eccentric rotary wheel 404 has a fan shape.
The beneficial effects of the invention are:
1. when the device is disassembled, the device can be quickly ejected, so that the trouble of taking out is avoided, and the disassembling efficiency is improved;
2. the device is installed through the limiting structure, so that the installation process is avoided being complex, the installation time is shortened, and the installation efficiency is improved;
3. through the heat conduction of the radiating fins, the heat inside is rapidly discharged, so that the temperature in the equipment is reduced, the radiating effect is improved, and the continuous use of the device is ensured.
Drawings
FIG. 1 is an overall perspective view of the present invention;
FIG. 2 is a top cut-away block diagram of the present invention;
FIG. 3 is a side cut-away block diagram of the present invention;
FIG. 4 is a perspective view of the interior of the pop-up assembly of the present invention;
FIG. 5 is a front view cut away mechanical view of the present invention;
illustration of the drawings: 1. a leakage preventing device body; 2. a pop-up assembly; 3. a connecting assembly; 4. a heat dissipating component; 5. a transparent protective cover; 6. a control button; 7. lifting the groove; 201. a chute; 202. a rotating shaft; 203. a torsion spring; 204. a first gear; 205. an electromagnet block; 206. a frame; 207. a slide plate; 208. a limiting plate; 209. a first rack; 301. a first motor; 302. a second gear; 303. rotating the hole; 304. a lifting groove; 305. rotating the rod; 306. a limiting disc; 307. a third gear; 308. a fourth gear; 309. a second rack; 310. a slider; 401. mounting grooves; 402. a heat dissipation port; 403. a second motor; 404. an eccentric rotary wheel; 405. a connecting plate; 406. a heat dissipation plate; 407. a spring.
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. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The first specific implementation way is as follows: specifically describing the present embodiment with reference to fig. 1 to 5, the leakage prevention device of the power protector according to the present embodiment includes a leakage prevention device body 1, an ejection component 2, a connection component 3, and a heat dissipation component 4, and the heat dissipation component 4 is located inside the leakage prevention device body 1 and is used for dissipating heat from the leakage prevention device body 1.
The outer wall of one side of the leakage prevention device body 1 is fixed with the pop-up component 2, the outer wall of one side of the leakage prevention device body 1 is fixed with the connecting component 3, and the inner wall of one side of the leakage prevention device body 1 is fixed with the heat radiation component 4. The transparent protective cover 5 is rotatably installed on the outer wall of one end of the leakage preventing device body 1, and the transparent protective cover 5 can protect the leakage preventing device body 1. The symmetry is inlayed and is installed control button 6 on the inner wall that electric leakage preventing device body 1 is located transparent protection cover 5 one side, and this 6 control button control power starts or closes and pops out subassembly 2, can carry out on-off control to it, and convenience of customers uses.
Pop-up assembly 2 includes frame 206, two limiting plates 208 and two sets of moving parts, and the moving parts include: a rotating shaft 202, a torsion spring 203, a first gear 204, an electromagnet block 205, at least one sliding plate 207, and a first rack 209.
The frame 206 is a U-shaped metal frame structure, the leakage preventing device body 1 is arranged in the frame 206 from the opening of the frame 206, two groups of moving parts are respectively arranged on two inner side walls opposite to the frame 206, one end of the rotating shaft 202 and the electromagnet block 205 are both fixed on the outer side wall of the leakage preventing device body 1, the outer side wall is opposite to the frame 206, the first gear 204 is rotatably connected with the other end of the rotating shaft 202, the torsion spring 203 is sleeved outside the rotating shaft 202, two ends of the torsion spring 203 are respectively fixedly connected with the outer side wall of the leakage preventing device body 1 and the first gear 204, the sliding plate 207 and the first rack 209 are both fixed on the inner side wall of the frame 206, the first gear 204 is meshed with the first rack 209, at least one sliding groove 201 is arranged on the outer side wall of the leakage preventing device body 1 opposite to the frame 206, the free end of the sliding plate 207 is embedded in the sliding groove 201, And can slide along the slide groove 201. Two limit plates 208 are fixed to the ends of two opposite inner side walls of the frame 206.
The connecting assembly 3 includes: a first motor 301, a second gear 302, a rotating rod 305, a third gear 307, a fourth gear 308, two second racks 309 and two sliders 310.
The connecting assembly 3 is located at the bottom of the frame 206, the bottom is a side wall facing the end of the body 1, two parallel lifting grooves 304 are formed at the inner side of the bottom of the frame 206, two sliding blocks 310 are respectively embedded in the two lifting grooves 304, two second racks 309 are respectively fixedly connected with the two sliding blocks 310, a rotating hole 303 is formed between the two lifting grooves 304, the rotating rod 305 passes through the rotating hole 303, the fourth gear 308 is located at the inner side of the bottom of the frame 206, and is fixedly connected with one end of the rotating rod 305, the second gear 302 and the third gear 307 are both positioned at the outer side of the bottom of the frame 206, the third gear 307 is fixedly connected with the other end of the rotating rod 305, the first motor 301 is embedded at the bottom of the frame 206, the output rod of the first motor 301 is fixedly connected with the second gear 302, the second gear 302 and the third gear 307 are mutually engaged, and the two second racks 309 are radially and symmetrically arranged at two sides of the fourth gear 308 and are mutually engaged with the fourth gear 308. The connecting assembly 3 further includes two limiting discs 306, and the two limiting discs 306 are both fixedly sleeved on the rotating rod 305 and respectively located at two sides of the bottom of the frame 206. The first motor 301 is a servo motor.
The outer wall of one side of the leakage preventing device body 1 is symmetrically provided with the lifting grooves 7, and under the action of the lifting grooves 7, the sliding grooves 201 in the leakage preventing device body 1 are aligned with the sliding plates 207 on the frame 206, so that the moving efficiency is improved.
The working principle of the embodiment is as follows: the slide groove 201 in the body 1 of the electrical leakage preventing device is aligned with the slide plate 207 on the frame 206 by the pull-up groove 7, and the body 1 of the electrical leakage preventing device is pushed at this time, so that the body 1 of the electrical leakage preventing device is inserted into the frame 206. During the insertion, the first rack 209 is engaged with the first gear 204, and when the sliding plate 207 slides to the end of the sliding groove 201, the first gear 204 on the rotating shaft 202 rotates and the torsion spring 203 is twisted, and at this time, the electromagnet block 205 is activated to attract the leakage preventing device body 1, thereby fixing the leakage preventing device body 1. When needs are dismantled, close electromagnet 205's adsorption affinity, at this moment under torsional spring 203's effect, make first gear 204 reverse, then use first rack 209 on, make its reverse movement, and then drive electric leakage prevention device body 1 and pop out fast, can be when dismantling, pop out equipment fast, it is comparatively troublesome when avoiding taking out, improved dismantlement efficiency.
When the whole equipment is installed in a station, the frame 206 is placed in a designated station, the first motor 301 is started to rotate the second gear 302, and then the limiting disc 306 on the rotating rod 305 is driven by the third gear 307 to rotate along the rotating hole 303, so that the fourth gear 308 rotates, and the sliding blocks 3010 on the two second gear bars 309 move oppositely along the lifting groove 304. In this way, the second rack 309 can be inserted into a preset limiting groove in the designated station, so that the frame 206 is fixed, the device is installed through the limiting structure, the installation process is avoided being complex, the installation time is shortened, and the installation efficiency is improved.
The second embodiment is as follows: in this embodiment, a leakage prevention device of a power protector according to a first embodiment is further described, in which the heat dissipation unit 4 includes: a connection plate 405, a plurality of heat dissipation plates 406, and two sets of driving parts.
The inside mounting groove 401 that leaves of electric leakage preventing device body 1, radiator unit 4 is located mounting groove 401, a plurality of heating panels 406 evenly distributed fixes on connecting plate 405, it has a plurality of thermovents 402 to open on the outer wall of electric leakage preventing device body 1, a plurality of thermovents 402 respectively with a plurality of heating panels 406 one-to-one, two sets of drive portions are fixed respectively in the both sides of connecting plate 405, two sets of drive portions all are used for driving connecting plate 405 with a plurality of heating panels 406 from the thermovents 402 who corresponds push out or pull back.
Each group of driving parts comprises: a second motor 403, an eccentric rotating wheel 404, and a spring 407. The output shaft of the second motor 403 is fixedly connected to the eccentric of the eccentric rotating wheel 404, the eccentric rotating wheel 404 is located between the connecting plate 405 and the inner wall of the leakage preventing device body 1 and is in contact with the connecting plate and the inner wall of the leakage preventing device body 1, and two ends of the spring 407 are connected to the connecting plate 405 and the inner wall of the leakage preventing device body 1, respectively.
The eccentric rotary wheel 404 is in a fan shape, and the convex part on the eccentric rotary wheel 404 presses the connecting plate 405, so that the heat dissipation plate 406 on the connecting plate 405 moves into the mounting groove 401 again to absorb heat.
The working principle is as follows: when the power relay main body 1 works, when the temperature reaches a certain height, the second motor 403 is started to enable the parallel and level position on the eccentric rotating wheel 404 to contact the connecting plate 405, at the moment, under the action of the second spring 407, the heat dissipation plate 406 on the connecting plate 405 is moved out along the heat dissipation port 402 in the mounting groove 401, then heat interaction is conducted with the outside, when the heat is dissipated, the second motor 403 is continuously started to enable the convex position on the eccentric rotating wheel 404 to extrude the connecting plate 405, so that the heat dissipation plate 406 on the connecting plate 405 is moved into the mounting groove 401 again to absorb heat, heat is conducted through the heat dissipation plate 406, the internal heat is rapidly discharged, the temperature in the equipment is reduced, the heat dissipation effect is improved, and continuous use of the device is ensured. Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (8)
1. An electric leakage preventing device of a power protector, comprising an electric leakage preventing device body (1), characterized by further comprising: the ejection assembly (2), the connection assembly (3) and the heat dissipation assembly (4), wherein the heat dissipation assembly (4) is located inside the electric leakage prevention device body (1) and used for dissipating heat for the electric leakage prevention device body (1);
the ejection assembly (2) comprises a frame (206) and two sets of moving parts, the moving parts comprising: a rotating shaft (202), a torsion spring (203), a first gear (204), an electromagnet block (205), at least one sliding plate (207) and a first rack (209),
the frame (206) is a U-shaped metal frame structure, the electric leakage preventing device body (1) is arranged in the frame (206) from an opening of the frame (206), two groups of moving parts are respectively positioned on two inner side walls which are opposite to each other of the frame (206), one end of a rotating shaft (202) and an electromagnet block (205) are both fixed on the outer side wall of the electric leakage preventing device body (1), the outer side wall is opposite to the frame (206), a first gear (204) is rotationally connected with the other end of the rotating shaft (202), a torsion spring (203) is sleeved outside the rotating shaft (202), two ends of the torsion spring (203) are respectively fixedly connected with the outer side wall of the electric leakage preventing device body (1) and the first gear (204), a sliding plate (207) and a first rack (209) are both fixed on the inner side wall of the frame (206), the first gear (204) is meshed with the first rack (209), at least one sliding groove (201) is formed on the outer side wall which is opposite to the electric leakage preventing device body (1) and the frame (206) The free end of the sliding plate (207) is embedded in the sliding groove (201) and can slide along the sliding groove (201);
the connection assembly (3) comprises: a first motor (301), a second gear (302), a rotating rod (305), a third gear (307), a fourth gear (308), two second racks (309) and two sliding blocks (310),
the connecting assembly (3) is positioned at the bottom of the frame (206), the bottom is a side wall facing the end part of the electric leakage prevention device body (1), two lifting grooves (304) which are arranged in parallel are formed in the inner side of the bottom of the frame (206), the two sliding blocks (310) are respectively embedded into the two lifting grooves (304), two second racks (309) are respectively fixedly connected with the two sliding blocks (310), a rotating hole (303) is formed between the two lifting grooves (304), the rotating rod (305) penetrates through the rotating hole (303), the fourth gear (308) is positioned at the inner side of the bottom of the frame (206) and is fixedly connected with one end of the rotating rod (305), the second gear (302) and the third gear (307) are both positioned at the outer side of the bottom of the frame (206), the third gear (307) is fixedly connected with the other end of the rotating rod (305), the first motor (301) is embedded at the bottom of the frame (206), and an output rod of the first motor (301) is fixedly connected with the second gear (302), the second gear (302) is meshed with the third gear (307), and the two second racks (309) are radially and symmetrically arranged on two sides of the fourth gear (308) and meshed with the fourth gear (308).
2. A leakage preventing device for a power protector according to claim 1, wherein the heat dissipating block (4) comprises: a connecting plate (405), a plurality of heat radiating plates (406) and two sets of driving parts,
the leakage prevention device comprises a leakage prevention device body (1), wherein a mounting groove (401) is reserved inside the leakage prevention device body (1), a heat dissipation assembly (4) is located in the mounting groove (401), a plurality of heat dissipation plates (406) are uniformly distributed and fixed on a connecting plate (405), a plurality of heat dissipation ports (402) are formed in the outer wall of the leakage prevention device body (1), the heat dissipation ports (402) are in one-to-one correspondence with the heat dissipation plates (406), two sets of driving portions are fixed on two sides of the connecting plate (405) respectively, and the two sets of driving portions are used for driving the connecting plate (405) to push out or pull back the heat dissipation plates (406) from the corresponding heat dissipation ports (402).
3. A leakage preventing device for a power protector according to claim 2, wherein each set of driving portions includes: a second motor (403), an eccentric rotating wheel (404) and a spring (407),
an output shaft of the second motor (403) is eccentrically and fixedly connected with an eccentric rotating wheel (404), the eccentric rotating wheel (404) is positioned between the connecting plate (405) and the inner wall of the electric leakage prevention device body (1) and is in mutual contact with the connecting plate and the inner wall of the electric leakage prevention device body (1), and two ends of the spring (407) are respectively connected with the connecting plate (405) and the inner wall of the electric leakage prevention device body (1).
4. A leakage preventing device for an electric power protector according to claim 1, 2 or 3, characterized in that the ejecting assembly (2) further comprises two limiting plates (208), and the two limiting plates (208) are respectively fixed at the ends of two opposite inner side walls of the frame (206).
5. An earth leakage prevention device for an electric power protector as claimed in claim 5, characterized in that the connection unit (3) further comprises two limiting discs (306), and the two limiting discs (306) are both fixed on the rotation rod (305) and located on two sides of the bottom of the frame (206).
6. A leakage preventing device for an electric power protector according to claim 1, characterized in that the transparent protecting cover (5) is installed at the end of the casing of the leakage preventing device body (1) facing the opening of the frame (206).
7. A leakage preventing device for an electric power protector according to claim 1, characterized in that the first electric motor (301) is a servo motor.
8. A leakage preventing device for an electric power protector according to claim 3, characterized in that the eccentric rotary wheel (404) is fan-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210384812.5A CN114696291B (en) | 2022-04-13 | 2022-04-13 | Leakage prevention device of electric power protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210384812.5A CN114696291B (en) | 2022-04-13 | 2022-04-13 | Leakage prevention device of electric power protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114696291A true CN114696291A (en) | 2022-07-01 |
| CN114696291B CN114696291B (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210384812.5A Active CN114696291B (en) | 2022-04-13 | 2022-04-13 | Leakage prevention device of electric power protector |
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| CN (1) | CN114696291B (en) |
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| CN210957769U (en) * | 2019-12-13 | 2020-07-07 | 李玉婷 | Novel leakage protection device |
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2022
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| GB563849A (en) * | 1942-11-18 | 1944-08-31 | Electric Transmission Ltd | Improvements in and relating to electrical circuit opening device |
| EP1638121A1 (en) * | 2003-05-29 | 2006-03-22 | Ping Liu | Electrical switch |
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| CN210957769U (en) * | 2019-12-13 | 2020-07-07 | 李玉婷 | Novel leakage protection device |
| CN215733069U (en) * | 2021-09-03 | 2022-02-01 | 潍坊鲁伟消防工程有限公司 | Anticreep device is used in fan fire control installation |
| CN215990177U (en) * | 2021-10-12 | 2022-03-08 | 国网冀北电力有限公司承德供电公司 | Leakage prevention device of electric power protector |
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| CN114696291B (en) | 2022-11-11 |
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Effective date of registration: 20221020 Address after: 165000 west side of Meteorological Bureau of landscape Avenue, Jiagedaqi District, Daxinganling region, Heilongjiang Province Applicant after: GREATER KHINGAN MOUNTAINS POWER SUPPLY COMPANY OF STATE GRID HEILONGJIANG ELECTRIC POWER CO.,LTD. Applicant after: STATE GRID CORPORATION OF CHINA Address before: 165000 west side of Meteorological Bureau of landscape Avenue, Jiagedaqi District, Daxinganling region, Heilongjiang Province Applicant before: GREATER KHINGAN MOUNTAINS POWER SUPPLY COMPANY OF STATE GRID HEILONGJIANG ELECTRIC POWER CO.,LTD. |
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