CN114867266A - Distribution lines fortune is examined and is used overvoltage protection device - Google Patents
Distribution lines fortune is examined and is used overvoltage protection device Download PDFInfo
- Publication number
- CN114867266A CN114867266A CN202210615210.6A CN202210615210A CN114867266A CN 114867266 A CN114867266 A CN 114867266A CN 202210615210 A CN202210615210 A CN 202210615210A CN 114867266 A CN114867266 A CN 114867266A
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- box body
- protection device
- box
- rod
- overvoltage protection
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- 238000007689 inspection Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000002457 bidirectional effect Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 241000883990 Flabellum Species 0.000 description 8
- 244000309464 bull Species 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Classifications
-
- 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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
-
- 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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
-
- 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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/03—Covers
-
- 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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/069—Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft
-
- 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
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Patch Boards (AREA)
Abstract
The invention belongs to the technical field of power distribution facilities, and particularly relates to an overvoltage protection device for distribution line operation and inspection, aiming at the problems that when the conventional device is used for protecting a voltage protection device, the voltage protection device is inconvenient to seal and install, and the voltage protection device cannot be cooled when in use, so that the heat of the voltage protection device is difficult to dissipate, and the voltage protection device is damaged due to overhigh temperature. The invention can isolate and protect the protection device, can seal and place the protection device, and can perform heat dissipation operation, thereby being convenient for people to use.
Description
Technical Field
The invention relates to the technical field of power distribution facilities, in particular to an overvoltage protection device for distribution line operation and detection.
Background
The distribution line is a line for transmitting power from a step-down substation to a distribution transformer or transmitting power from a distribution substation to a power consumption unit. The distribution line is an important component of the power grid in China, and when the distribution line is subjected to lightning stroke and overvoltage occurs, insulator flashover and line tripping accidents are often caused, so that stable and safe operation of the power grid is influenced, and therefore, the overvoltage protection device appears on the market.
Application number is 202020649844 discloses an overvoltage protection device is used in distribution lines fortune examination in X, including lid and box body, be equipped with fixed knot in the lid and construct, insert on the lid and be equipped with a plurality of insulating bolt, all be equipped with in lid and the box body with insulating bolt size position assorted screw bolt, the diapire fixedly connected with magnet piece one of lid, the box body be equipped with magnet piece size position assorted fixed slot. The utility model discloses a two can fasten closed sheaths and realize the parcel protection to protection device, can replace the general ceramic tube of effect, effectively protect overvoltage protection device's use, set up fixed knot structure and fasten protection device in the sheath, prevent the displacement skew of protection device, simultaneously expanding spring can adjust fastening state through small deformation, avoided the rigid friction between protection device and the protective equipment, effectively protected protection device, greatly reduced the potential safety hazard.
When protecting the voltage protection device, the conventional device is inconvenient to seal and install the voltage protection device, and the temperature of the voltage protection device cannot be lowered when the voltage protection device is used, so that the heat of the voltage protection device is difficult to dissipate, and the voltage protection device is damaged due to overhigh temperature.
Disclosure of Invention
The invention aims to solve the defects that the conventional device is inconvenient to seal and install the voltage protection device when protecting the voltage protection device, cannot cool the voltage protection device when in use, is easy to cause the heat of the voltage protection device to be difficult to radiate, and is damaged due to overhigh temperature of the voltage protection device, and provides the overvoltage protection device for distribution line operation and detection.
In order to achieve the purpose, the invention adopts the following technical scheme:
an overvoltage protection device for distribution line transportation and inspection comprises a box body and a box cover, wherein two symmetrically-arranged placing grooves are formed in one side, close to each other, of the box body and the box cover, a clamping mechanism is arranged on the box body, a driving rod is rotatably connected to the bottom of the box body and is in transmission connection with the clamping mechanism, a handle is fixedly mounted at the bottom end of the driving rod, a sealing mechanism is arranged on the inner wall of the box body and is in transmission connection with the clamping mechanism, two symmetrically-arranged air guide boxes are fixedly mounted at the bottom of the box body, an air guide mechanism is arranged in the air guide boxes and is communicated with the box body, a motor is fixedly mounted on the inner wall of one side of the box body, a rotating rod is fixedly mounted on an output shaft of the motor and is in transmission connection with the air guide mechanism, a fixed rod is fixedly mounted at the bottom of the box body, a balancing weight is fixedly mounted at the bottom end of the fixed rod, and a convex sealing strip and a concave sealing strip are respectively mounted on one side, close to each other, of the box body and the box cover, the convex sealing strip and the concave sealing strip are matched with each other.
Preferably, the clamping mechanism comprises eight symmetrically-arranged positioning seats, the eight positioning seats are respectively and fixedly installed on the inner walls of the box body and the box cover, the two corresponding positioning seats are connected with the same two-way screw through threads, the four two-way screws are rotatably connected with the inner wall of the bottom of the box body, the driving rod is in transmission connection with the four two-way screws, the driving rod is fixedly provided with a first chain wheel, the two-way screw is fixedly provided with a second chain wheel, the first chain wheel is meshed with the four second chain wheels through a same chain, the rotating driving rod drives the four two-way screws to rotate simultaneously through the mutual meshing of the first chain wheel, the four second chain wheels and the chain, and the rotating two-way screw drives the box body and the box cover to clamp the cable through the threaded connection with the two corresponding positioning seats.
Preferably, sealing mechanism includes the wedge rubber ring that two symmetries set up, two wedge rubber rings are located the box body, and the equal fixed mounting in both sides of wedge rubber ring has the connecting rod, sliding connection on the inner wall of connecting rod and box body, equal sliding connection has the removal seat on the both sides inner wall of box body, remove seat and two-way screw rod threaded connection that correspond, equal fixed mounting has the fixing base on the both sides inner wall of lid, the fixing base has the wedge with the equal fixed mounting in one side that the removal seat is close to each other, the wedge is mutually supported with the wedge rubber ring that corresponds, the pivoted two-way screw rod is through the threaded connection with the removal seat, and be close to each other through box body and lid, thereby can be through mutually supporting of wedge and wedge rubber ring, thereby can drive the wedge rubber ring and seal the standing groove.
Preferably, air guide mechanism includes the locating lever, locating lever fixed mounting is on the inner wall of wind-guiding box, it is connected with the pivot to rotate on the locating lever, the bottom fixed mounting of pivot has the flabellum, and fixed mounting has the dust screen on the inner wall of wind-guiding box, dust screen and flabellum mutually support, fixed mounting has the first conical gear that two symmetries set up on the bull stick, the top fixed mounting of pivot has second conical gear, first conical gear and second conical gear intermeshing, it is connected with the connecting box to rotate in the pivot, the connecting box rotates with the bull stick to be connected, the pivoted bull stick drives the pivot through the intermeshing of first conical gear and second conical gear and rotates, and then blow the heat dissipation in to the box body through the flabellum.
Compared with the prior art, the invention has the advantages that:
(1) according to the scheme, the first chain wheel, the four second chain wheels and the chain are meshed with each other, and the bidirectional screw is in threaded connection with the two positioning seats, so that the box body and the box cover can be driven to be close to each other by rotating the driving rod, a cable can be clamped and positioned, and meanwhile, a protection device can be wrapped and protected;
(2) the wedge-shaped plate is matched with the wedge-shaped rubber ring, and the movable seat is in threaded connection with the bidirectional screw rod, so that the bidirectional screw rod can be rotated to drive the wedge-shaped rubber ring to block and seal the placing groove;
(3) because the first bevel gear and the second bevel gear are meshed with each other, and the fan blades are matched with the air guide box, the rotating rod can drive the fan blades to blow air to dissipate heat of the protection device in the box body.
The invention can isolate and protect the protection device, can seal and place the protection device, and can perform heat dissipation operation, thereby being convenient for people to use.
Drawings
Fig. 1 is a schematic structural diagram of an overvoltage protection device for distribution line operation and inspection according to the present invention;
fig. 2 is a schematic cross-sectional view of a wedge-shaped rubber ring of the overvoltage protection device for distribution line operation and inspection according to the present invention;
fig. 3 is a schematic side view of an overvoltage protection device for distribution line operation according to the present invention;
fig. 4 is a schematic three-dimensional structure diagram of a wedge-shaped rubber ring of the overvoltage protection device for distribution line operation and detection provided by the invention;
fig. 5 is a schematic structural diagram of a portion a of an overvoltage protection device for distribution line operation inspection according to the present invention.
In the figure: 1. a box body; 2. a box cover; 3. a placement groove; 4. positioning seats; 5. a bidirectional screw; 6. a driving lever; 7. a handle; 8. a fixed seat; 9. a movable seat; 10. a wedge plate; 11. a wedge-shaped rubber ring; 12. a connecting rod; 13. a wind guiding box; 14. positioning a rod; 15. a rotating shaft; 16. a fan blade; 17. a dust screen; 18. a motor; 19. a rotating rod; 20. a first bevel gear; 21. a second bevel gear; 22. a convex sealing strip; 23. a concave sealing strip; 24. fixing the rod; 25. and a balancing weight.
Detailed Description
The technical solution in this embodiment will be clearly and completely described below with reference to the drawings in this embodiment.
Example one
Referring to fig. 1-5, an overvoltage protection device for distribution line operation and inspection comprises a box body 1 and a box cover 2, two symmetrically arranged placing grooves 3 are respectively arranged on one side of the box body 1 close to the box cover 2, a clamping mechanism is arranged on the box body 1, a driving rod 6 is rotatably connected to the bottom of the box body 1, the driving rod 6 is in transmission connection with the clamping mechanism, a handle 7 is fixedly arranged at the bottom end of the driving rod 6, a sealing mechanism is arranged on the inner wall of the box body 1 and in transmission connection with the clamping mechanism, two symmetrically arranged air guide boxes 13 are fixedly arranged at the bottom of the box body 1, an air guide mechanism is arranged in the air guide boxes 13, the air guide boxes 13 are mutually communicated with the box body 1, a motor 18 is fixedly arranged on the inner wall of one side of the box body 1, a rotating rod 19 is fixedly arranged on an output shaft of the motor 18, the rotating rod 19 is in transmission connection with the air guide mechanism, and a fixing rod 24 is fixedly arranged at the bottom of the box body 1, the bottom end of the fixing rod 24 is fixedly provided with a balancing weight 25, one side of the box body 1 close to the box cover 2 is provided with a convex sealing strip 22 and a concave sealing strip 23 respectively, and the convex sealing strip 22 and the concave sealing strip 23 are matched with each other.
In this embodiment, fixture includes positioning seat 4 that eight symmetries set up, eight positioning seats 4 are fixed mounting respectively on the inner wall of box body 1 and lid 2, threaded connection has same two-way screw rod 5 on two corresponding positioning seats 4, four two-way screw rods 5 rotate with the bottom inner wall of box body 1 and are connected, drive rod 6 is connected with four two-way screw rod 5 transmissions, fixed mounting has first sprocket on the drive rod 6, fixed mounting has the second sprocket on the two-way screw rod 5, the meshing has same chain on first sprocket and the four second sprockets, pivoted drive rod 6 drives four two-way screw rods 5 and rotates simultaneously through the intermeshing of four second sprockets and chain, pivoted two-way screw rod 5 drives box body 1 and lid 2 through the threaded connection with two corresponding positioning seats 4 and carries out the centre gripping to the cable.
In this embodiment, the sealing mechanism includes two symmetrically arranged wedge-shaped rubber rings 11, the two wedge-shaped rubber rings 11 are located in the box body 1, and both sides of the wedge-shaped rubber ring 11 are fixedly provided with connecting rods 12, the connecting rods 12 are connected with the inner wall of the box body 1 in a sliding way, the inner walls of both sides of the box body 1 are connected with moving seats 9 in a sliding way, the moving seats 9 are in threaded connection with two corresponding two-way screw rods 5, the inner walls of both sides of the box cover 2 are fixedly provided with fixed seats 8, the mutually close sides of the fixed seats 8 and the moving seats 9 are fixedly provided with wedge plates 10, the wedge plates 10 are mutually matched with the corresponding wedge-shaped rubber ring 11, the rotating two-way screw rods 5 are connected with the moving seats 9 through threads, and are mutually close to the box body 1 and the box cover 2, thereby can be through mutually supporting of wedge plate 10 with wedge rubber ring 11 to can drive wedge rubber ring 11 and seal standing groove 3.
In this embodiment, air guide mechanism includes locating lever 14, locating lever 14 fixed mounting is on the inner wall of wind-guiding box 13, it is connected with pivot 15 to rotate on the locating lever 14, the bottom fixed mounting of pivot 15 has flabellum 16, and fixed mounting has dust screen 17 on the inner wall of wind-guiding box 13, dust screen 17 and flabellum 16 mutually support, fixed mounting has two first bevel gear 20 that the symmetry set up on bull stick 19, the top fixed mounting of pivot 15 has second bevel gear 21, first bevel gear 20 and second bevel gear 21 intermeshing, it is connected with the connecting box to rotate on the pivot 15, the connecting box rotates with bull stick 19 to be connected, pivoted bull stick 19 drives pivot 15 through the intermeshing of first bevel gear 20 with second bevel gear 21 and rotates, and then blow the heat dissipation in to box body 1 through flabellum 16.
The working principle is that during working, a cable is placed in the placing groove 3 and the wedge-shaped rubber ring 11, the protection device is placed in the box body 1 and the box cover 2, the handle 7 is rotated, the handle 7 drives the driving rod 6 to rotate, the driving rod 6 drives the four bidirectional screw rods 5 to rotate simultaneously through the mutual meshing of the first chain wheel, the four second chain wheels and the chain, the rotating bidirectional screw rods 5 are connected with the corresponding two positioning seats 4 through threads, so that the box cover 2 and the box body 1 can be driven to close and cover, the protection device is isolated and protected, the cable is clamped and positioned through the placing groove 3, the rotating bidirectional screw rods 5 are connected with the moving seat 9 through threads, the moving seat 9 is driven to move, the moving seat 9 and the box body 1 and the box cover 2 which are close to each other are driven to close to each other, the wedge-shaped plates 10 are matched with the wedge-shaped rubber ring 11, thereby can drive wedge rubber ring 11 and remove, the wedge rubber ring 11 of removal is through mutually supporting with standing groove 3, thereby can seal standing groove 3, the switch of restart motor 18, motor 18's output shaft drives bull stick 19 and rotates, bull stick 19 drives pivot 15 through the intermeshing of first conical gear 20 with second conical gear 21 and rotates, pivoted pivot 15 drives flabellum 16 and rotates, pivoted flabellum 16 forms the air flow, thereby can ventilate the heat dissipation to the protection device in the box body 1, dead lever 24 can be convenient for fix a position box body 1 with setting up of balancing weight 25 simultaneously, make box body 1 be in the below of cable all the time, thereby can keep leading wind box 13 to be in the below, keep ventilating, prevent that the rainwater from entering into in the box body 1.
Example two
The theory of operation, the difference of embodiment two and embodiment one lies in, install temperature sensor and humidity transducer on the inner wall of box body 1, and install locator and signal transmitter on the box body 1, when using, temperature sensor can carry out temperature monitoring to the protection device in the box body 1, humidity transducer's setting can prevent to invade the moisture in the box body 1, the maintenance personal can be convenient for to the maintenance of seeking of device to the setting of locator, signal transmitter's setting can be convenient for carry out signal transmission to the temperature sensor in the box body 1 and humidity transducer's the control condition, make things convenient for remote monitoring.
Claims (8)
1. An overvoltage protection device for distribution line operation and inspection comprises a box body (1) and a box cover (2), and is characterized in that two symmetrically-arranged placing grooves (3) are formed in one side, close to each other, of the box body (1) and the box cover (2), a clamping mechanism is arranged on the box body (1), a driving rod (6) is rotatably connected to the bottom of the box body (1), the driving rod (6) is in transmission connection with the clamping mechanism, a handle (7) is fixedly arranged at the bottom end of the driving rod (6), a sealing mechanism is arranged on the inner wall of the box body (1) and in transmission connection with the clamping mechanism, two symmetrically-arranged air guide boxes (13) are fixedly arranged at the bottom of the box body (1), an air guide mechanism is arranged in the air guide boxes (13), the air guide boxes (13) are mutually communicated with the box body (1), a motor (18) is fixedly arranged on the inner wall of one side of the box body (1), a rotating rod (19) is fixedly arranged on an output shaft of the motor (18), the rotating rod (19) is in transmission connection with the air guide mechanism, a fixing rod (24) is fixedly mounted at the bottom of the box body (1), a balancing weight (25) is fixedly mounted at the bottom end of the fixing rod (24), a convex sealing strip (22) and a concave sealing strip (23) are mounted on one side, close to each other, of the box body (1) and the box cover (2), and the convex sealing strip (22) and the concave sealing strip (23) are matched with each other.
2. The overvoltage protection device for distribution line operation and detection according to claim 1, wherein the clamping mechanism comprises eight symmetrically arranged positioning seats (4), the eight positioning seats (4) are fixedly installed on the inner walls of the box body (1) and the box cover (2), the same two-way screw (5) is in threaded connection with two corresponding positioning seats (4), the four two-way screw (5) is rotatably connected with the inner wall of the bottom of the box body (1), and the driving rod (6) is in transmission connection with the four two-way screw (5).
3. The overvoltage protection device for distribution line operation and detection according to claim 1, wherein the sealing mechanism comprises two symmetrically arranged wedge-shaped rubber rings (11), the two wedge-shaped rubber rings (11) are located in the box body (1), connecting rods (12) are fixedly mounted on two sides of each wedge-shaped rubber ring (11), and the connecting rods (12) are connected with the inner wall of the box body (1) in a sliding mode.
4. The overvoltage protection device for distribution line operation and detection as claimed in claim 1, wherein the air guiding mechanism comprises a positioning rod (14), the positioning rod (14) is fixedly installed on an inner wall of the air guiding box (13), a rotating shaft (15) is rotatably connected to the positioning rod (14), a fan blade (16) is fixedly installed at a bottom end of the rotating shaft (15), a dust screen (17) is fixedly installed on the inner wall of the air guiding box (13), and the dust screen (17) is matched with the fan blade (16).
5. The overvoltage protection device for distribution line operation according to claim 2, wherein the driving rod (6) is fixedly provided with a first chain wheel, the bidirectional screw (5) is fixedly provided with a second chain wheel, and the first chain wheel and the four second chain wheels are engaged with a same chain.
6. The overvoltage protection device for distribution line operation and detection according to claim 3, wherein the box body (1) is slidably connected with a movable seat (9) on each of two inner walls, the movable seats (9) are in threaded connection with the corresponding two-way screws (5), the box cover (2) is fixedly provided with a fixed seat (8) on each of two inner walls, a wedge plate (10) is fixedly provided on one side of the fixed seat (8) close to the movable seat (9), and the wedge plate (10) is matched with the corresponding wedge-shaped rubber ring (11).
7. The overvoltage protection device for distribution line operation and inspection according to claim 4, wherein two first bevel gears (20) are fixedly arranged on the rotating rod (19) symmetrically, a second bevel gear (21) is fixedly arranged at the top end of the rotating shaft (15), and the first bevel gear (20) and the second bevel gear (21) are meshed with each other.
8. The overvoltage protection device for distribution line operation according to claim 4, wherein the rotary shaft (15) is rotatably connected with a connection box, and the connection box is rotatably connected with the rotary rod (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210615210.6A CN114867266B (en) | 2022-06-01 | 2022-06-01 | Overvoltage protection device for operation and detection of distribution line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210615210.6A CN114867266B (en) | 2022-06-01 | 2022-06-01 | Overvoltage protection device for operation and detection of distribution line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114867266A true CN114867266A (en) | 2022-08-05 |
| CN114867266B CN114867266B (en) | 2024-01-19 |
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ID=82641693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210615210.6A Active CN114867266B (en) | 2022-06-01 | 2022-06-01 | Overvoltage protection device for operation and detection of distribution line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114867266B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117937373A (en) * | 2024-03-25 | 2024-04-26 | 四川清能继控科技有限公司 | Intelligent electric power emergency protection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN207289529U (en) * | 2017-10-18 | 2018-05-01 | 李�一 | A kind of bearing fixture |
| CN209338110U (en) * | 2018-11-16 | 2019-09-03 | 德州新动能铁塔发电有限公司 | A kind of methanol-water reformation hydrogen production power generator of solar energy auxiliary |
| CN212063494U (en) * | 2020-04-26 | 2020-12-01 | 翟艳涛 | Distribution lines fortune is examined and is used overvoltage protection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117937373A (en) * | 2024-03-25 | 2024-04-26 | 四川清能继控科技有限公司 | Intelligent electric power emergency protection device |
| CN117937373B (en) * | 2024-03-25 | 2024-05-31 | 四川清能继控科技有限公司 | Intelligent electric power emergency protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114867266B (en) | 2024-01-19 |
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