CN109980572B - Reverse power supply protection device for power grid and installation and use method - Google Patents
Reverse power supply protection device for power grid and installation and use method Download PDFInfo
- Publication number
- CN109980572B CN109980572B CN201910206323.9A CN201910206323A CN109980572B CN 109980572 B CN109980572 B CN 109980572B CN 201910206323 A CN201910206323 A CN 201910206323A CN 109980572 B CN109980572 B CN 109980572B
- Authority
- CN
- China
- Prior art keywords
- outer end
- open
- close type
- protective shell
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
Abstract
The utility model provides a power supply protector that falls is used to electric wire netting, this application outer end protecting crust bottom and outer end protecting crust top rear side link to each other through the hinge, all have half-wave type sealing washer in outer end protecting crust bottom and the outer end protecting crust top, outer end protecting crust bottom and outer end protecting crust top close through outer end protecting crust locking mechanism, open-close type protecting crust is between two outer end protecting crust, open-close type protecting crust bottom and open-close type protecting crust top rear side link to each other through the hinge, open-close type protecting crust bottom and open-close type protecting crust top close through open-close type protecting crust locking mechanism. This application adopts open-close type design, is provided with wave type sealing washer in the both ends, can improve holistic leakproofness greatly to can be through the rotatory 180 of movable groove support on the protecting crust at connection structure both ends in the use, and close the open-close type protecting crust in the middle of once more, too big blow open-close type protecting crust in order to avoid high altitude construction time wind speed, take place danger.
Description
Technical Field
The invention relates to the field of power grid matching devices, in particular to a reverse power supply protection device for a power grid and an installation and use method.
Background
At present, power grid maintenance is carried out, after a power supply system in an area where a maintenance line is located is closed, maintenance personnel perform maintenance in high-altitude operation, an overhead cable is connected to a house inevitably, a generator is installed by some users (such as schools, markets, factories and the like) to ensure that normal power supply is carried out when power is cut without influencing normal operation of electrical appliances, a phenomenon that power is supplied to an overhead main line from a user-owned generator reversely to enable the main line to be still electrified exists when power is cut, if a constructor breaks a power supply system on the main line, maintenance is carried out without reverse power supply treatment, extremely large potential safety hazards exist inevitably, corresponding reverse power supply devices for the power grid are required to be arranged to ensure safety of the constructor, and therefore, reverse power supply prevention devices for the power grid are designed Adhesive tape and metal foil, the contact switch both sides in insulating overhead line are wrapped up in when metal foil uses, the top and the terminal of electric wire netting line strain insulator section, the ground connection position periphery that sets up on being close to branch point department and the circuit of probably reverse power transmission of branch circuit, the winding is at the both ends of metal foil when the adhesive tape uses, the adhesive tape covers metal foil's end and a section cable conductor sheath outside the ground connection position outer end simultaneously, set up in ground connection position periphery when the protective housing uses, the metal foil after the parcel, the adhesive tape after the winding is covered completely simultaneously, but this structure adopts the open and close structure of two casings to realize the cable protection, and do not consider the leakproofness at both ends, therefore sealed effect is relatively poor, and because need open and close structure in the use, the open and close formula protective housing is blown to the wind speed is too big during high altitude construction, easy emergence.
Disclosure of Invention
In order to solve the problems, the invention provides a reverse power supply protection device for a power grid and an installation and use method thereof, wherein an open-close type design is adopted, wave-shaped sealing rings are arranged in two ends of the reverse power supply protection device, the whole sealing property can be greatly improved, in addition, the reverse power supply protection device can be rotated by 180 degrees through movable groove supports on protection shells at two ends of a connecting structure in the use process, the open-close type protection shell in the middle is closed again, so that the condition that the open-close type protection shell is blown by overlarge wind speed during high-altitude operation to cause danger is avoided, and the safety is greatly improved, and the aim is achieved, the reverse power supply protection device for the power grid comprises an outer end protection shell, a half-wave-shaped sealing ring, an open-close type protection shell and a connecting structure, wherein the outer end protection shell is provided with a pair, the outer end protection shell comprises an outer end protection shell bottom and an outer, the utility model discloses a cable grounding part, including outer end protecting crust, open-close type protecting crust, hinge, half-wave type sealing washer, cable ground part, half-wave type sealing washer, half-wave type sealing washer, half-wave type sealing washer, half-wave type sealing washer, open-close type protecting crust, open-close type.
As the structure of the invention is further improved, one side of the bottom of the open-close type protective shell is provided with a connecting structure through a rotating shaft, the upper part of the connecting structure is arranged in a movable groove bracket corresponding to the bottom of the outer end protective shell, and the connecting structure of the open-close type protective shell rotates 180 degrees after moving along a movable groove of the movable groove bracket and is fixed on the other side of the corresponding outer end protective shell.
As the structure of the invention is further improved, the bottom parts of the two outer end protective shells are respectively provided with the movable groove bracket, and the movable groove brackets can be arranged at the bottom parts of all the outer end protective shells in actual production, so that the production is convenient, and the installation is carried out as required.
As the structure of the invention is further improved, the outer end protecting shell locking mechanism comprises an outer end protecting shell lock hole and an outer end protecting shell buckle, the outer end protecting shell lock hole and the outer end protecting shell buckle are respectively fixed at the bottom of the outer end protecting shell and at the outer side of the top of the outer end protecting shell, the open-close type protecting shell locking mechanism is provided with a pair of the open-close type protecting shell locking mechanism, the open-close type protecting shell locking mechanism comprises an open-close type protecting shell buckle and an open-close type protecting shell lock hole, the open-close type protecting shell buckle and the open-close type protecting shell lock hole are respectively fixed at the bottom of the open-close type protecting shell and at the outer side of the top of the open-.
As the structure of the invention is further improved, a layer of waterproof sealing gasket is arranged at the bottom of the open-close type protective shell and at the top of the open-close type protective shell, and the sealing gaskets can provide integral waterproof performance.
As the structure of the invention is further improved, 2-4 layers of half-wave-shaped sealing rings are arranged in the bottom of the outer end protective shell and the top of the outer end protective shell, and the corresponding half-wave-shaped sealing rings can be selected according to the requirements of actual operation.
The application provides an installation and use method of a reverse power supply protection device for a power grid, which comprises the following specific steps:
the mounting steps are as follows;
a. Stripping a cable insulating layer of a cable grounding part of the cable, and wrapping conductive gold platinum in the middle of a stripped lead;
b. The ports of the two insulating layers are wrapped with electrical tape, and the electrical tape does not exceed the red line on the conductive platinum;
c. Selecting a half-wave type sealing ring according to the size of the cable;
d. Opening the protective shells at the two ends and the open-close type protective shell in the middle, installing the protective shells at the two ends respectively corresponding to the wrapped electrical tape, and finally closing the open-close type protective shell in the middle;
the maintenance and use steps are as follows;
a. opening the middle open-close type protective shell to the lower part of the cable;
b. the movable grooves on the protective shells at the two ends of the connecting structure rotate 180 degrees, and the open-close type protective shell in the middle is closed again, so that the exposed part of the cable is grounded;
c. and after the use is finished, the middle open-close type protective shell returns to the original position.
As a further improvement of the installation of the invention, the stripping length of the cable insulation layer of the cable grounding part of the cable in the installation step is 70-75mm, and the stripping length is generally 70-75mm in actual installation.
As a further improvement of the inventive arrangement, the electrical sealant tape has 4 to 6 layers, and typically 4 to 6 layers to ensure electrical sealant tape.
As a further improvement of the installation of the invention, the number of the half-wave type sealing rings in the installation step is 2-4, so that the half-wave type sealing rings can be replaced according to different types of cables.
The beneficial effect of this application is as follows:
1) the main body of the application comprises two outer end protective shells and an opening-closing type protective shell, the protective shells at two ends respectively correspond to two cable ends of a cable grounding part poking-out part of a cable, and finally the opening-closing type protective shell in the middle is closed to finish the operation, so that the whole operation is very convenient and fast;
2) the wave-shaped sealing rings are arranged in the protective shells at the two ends, and the two ends of the poked cable are clamped tightly by the shells through the wave-shaped sealing rings after the protective shells at the two ends are closed, so that the overall sealing performance is greatly improved, the sealing effect is good by adopting the wave-shaped sealing rings, and the disassembly is convenient;
3) the movable groove support on the protecting crust at the two ends of the connecting structure can rotate 180 degrees in the using process of the protective shell, the middle opening-closing protecting crust is closed again, the opening-closing protecting crust is prevented from being blown by too large wind speed in high-altitude operation, danger occurs, and safety is greatly improved.
Drawings
FIG. 1 is a schematic view of an installation step of the present invention;
FIG. 2 is a schematic view of the installation step two of the present invention;
FIG. 3 is a schematic view of the installation step three of the present invention;
FIG. 4 is a schematic view of the present invention after installation;
FIG. 5 is a schematic view of a first step of assembly, use and disassembly of the present invention;
FIG. 6 is a schematic view of a second step of disassembly for installation and use in accordance with the present invention;
FIG. 7 is a schematic view showing a third step of disassembly for installation and use in accordance with the present invention;
FIG. 8 is a fourth schematic view of the assembly, use and disassembly steps of the present invention;
description of the drawings:
1. a cable wire; 2. a cable grounding portion; 3. electrical tape; 4. the outer end is at the bottom of the protective shell; 5. the top of the outer end protective shell; 6. the outer end of the protective shell is provided with a lock hole; 7. the outer end protective shell is buckled; 8. a half-wave-shaped sealing ring; 9. a movable slot bracket; 10. the bottom of the open-close type protective shell; 11. the top of the open-close type protective shell; 12. a connecting structure; 13. the open-close type protective shell is buckled; 14. a lock hole of the open-close type protective shell; 15. a waterproof gasket.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
the invention provides a reverse power supply protection device for a power grid and an installation and use method thereof, wherein an open-close type design is adopted, wave-shaped sealing rings are arranged in two ends of the reverse power supply protection device, the whole sealing performance can be greatly improved, in addition, the reverse power supply protection device can rotate 180 degrees through movable groove supports on protection shells at two ends of a connecting structure in the use process, and the middle open-close type protection shell is closed again, so that the danger caused by the fact that the open-close type protection shell is blown by overlarge wind speed in the high-altitude operation process is avoided, and the safety is greatly.
As an embodiment of the invention, the invention provides a reverse power supply protection device for a power grid, which comprises a pair of outer end protection shells, half-wave-shaped sealing rings 8, an opening-closing protection shell and a connecting structure 12, wherein each outer end protection shell comprises an outer end protection shell bottom 4 and an outer end protection shell top 5, the outer end protection shells correspond to two cable ends of a poking-out part of a cable grounding part 2 of a cable 1, the rear sides of the outer end protection shell bottom 4 and the outer end protection shell top 5 are connected through hinges, the half-wave-shaped sealing rings 8 are respectively arranged in the outer end protection shell bottom 4 and the outer end protection shell top 5, the outer end protection shell bottom 4 and the outer end protection shell top 5 are closed through an outer end protection shell locking mechanism, and then the corresponding cable ends of the poking-out part of the cable grounding part 2 of the cable 1 are clamped through the half-wave-shaped sealing rings 8, the cable grounding part 2 is wrapped by the open-close type protective shell 10 and the open-close type protective shell top 11 after the open-close type protective shell is closed through the open-close type protective shell locking mechanism.
As a specific embodiment of the present invention, the present invention provides a reverse power supply protection device for an electrical grid as shown in fig. 1-8, comprising an outer end protection shell, a half-wave type sealing ring 8, an opening-closing protection shell and a connecting structure 12, wherein the outer end protection shell has a pair, the outer end protection shell comprises an outer end protection shell bottom 4 and an outer end protection shell top 5, the outer end protection shell corresponds to two cable ends of a cable grounding part 2 of a cable 1, the rear sides of the outer end protection shell bottom 4 and the outer end protection shell top 5 are connected by a hinge, the half-wave type sealing ring 8 is arranged in each of the outer end protection shell bottom 4 and the outer end protection shell top 5, the half-wave type sealing rings 8 are arranged in the outer end protection shell bottom 4 and the outer end protection shell top 5, and can be selected according to actual operation requirements, the cable grounding part 2 of the cable 1 is pushed to the corresponding cable end of the opening part through a half-wave type sealing ring 8 after the outer end protecting shell bottom 4 and the outer end protecting shell top 5 are closed through an outer end protecting shell locking mechanism, the opening-closing type protecting shell is arranged between the two outer end protecting shells, the opening-closing type protecting shell comprises an opening-closing type protecting shell bottom 10 and an opening-closing type protecting shell top 11, the opening-closing type protecting shell bottom 10 and the opening-closing type protecting shell top 11 are connected through a hinge, the opening-closing type protecting shell bottom 10 and the opening-closing type protecting shell top 11 wrap the cable grounding part 2 after being closed through an opening-closing type protecting shell locking mechanism, the outer end protecting shell locking mechanism comprises an outer end protecting shell locking hole 6 and an outer end protecting shell buckle 7, the outer end protecting shell locking hole 6 and the outer end protecting shell buckle 7 are respectively fixed at the outer end protecting shell bottom 4 and the outer end protecting shell top, the locking mechanism of the open-close type protective shell comprises an open-close type protective shell buckle 13 and an open-close type protective shell lock hole 14, the open-close type protective shell buckle 13 and the open-close type protective shell lock hole 14 are respectively fixed at the bottom 10 of the open-close type protective shell and the outer side of the top 11 of the open-close type protective shell, the locking mechanism can be operated more simply and conveniently in a lock hole and buckle mode, a connecting structure 12 is installed at one side of the bottom 10 of the open-close type protective shell through a rotating shaft, the upper portion of the connecting structure 12 is arranged in a movable groove support 9 corresponding to the bottom 4 of the outer end protective shell, the connecting structure 12 of the open-close type protective shell rotates 180 degrees along a movable groove of the movable groove support and then is fixed at the other side of the corresponding outer end protective shell, movable groove supports 9 are arranged at the bottoms of the bottoms 4 of the two outer end protective shells, and movable groove supports can be, the production of being convenient for like this, as required installation can, there is one deck waterproof sealing gasket 15 in open-close type protecting crust bottom 4 and the open-close type protecting crust top 8, sets up sealed the pad and can provide holistic waterproof performance.
The application provides an installation and use method of a reverse power supply protection device for a power grid, which comprises the following specific steps:
the installation steps are as follows, wherein the operation steps of the power supply device for preventing reverse power supply are shown in figures 1-4;
a. Stripping a cable insulating layer of a cable grounding part of the cable by 70-75mm, generally stripping by 70-75mm in actual installation, and wrapping conductive gold platinum in the middle of a stripped lead;
b. 4-6 layers of sealing electrical tapes are wrapped at the ports of the two insulating layers, and in order to ensure that the sealing electrical tapes generally have 4-6 layers, the insulating electrical tapes do not exceed the red line on the conductive platinum;
c. 2-4 half-wave sealing rings are selected according to the size of the cable, so that the cable can be replaced according to different types of cables;
d. Opening the protective shells at the two ends and the open-close type protective shell in the middle, installing the protective shells at the two ends respectively corresponding to the wrapped electrical tape, and finally closing the open-close type protective shell in the middle;
the maintenance and use steps are as follows, wherein the operation steps of the anti-reverse power supply device are shown in figures 5-8;
a. opening the middle open-close type protective shell to the lower part of the cable;
b. the movable grooves on the protective shells at the two ends of the connecting structure rotate 180 degrees, and the open-close type protective shell in the middle is closed again, so that the exposed part of the cable is grounded;
c. and after the use is finished, the middle open-close type protective shell returns to the original position.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but any modifications or equivalent variations made according to the technical spirit of the present invention are within the scope of the present invention as claimed.
Claims (10)
1. The utility model provides a power supply protector that falls is used to electric wire netting, includes outer end protecting crust, half-wave type sealing washer (8), open-close type protecting crust and connection structure (12), its characterized in that: the outer end protecting shell comprises a pair of outer end protecting shell bottom (4) and outer end protecting shell top (5), the outer end protecting shell corresponds to two cable ends of a cable grounding part (2) of the cable (1) to be pulled out, the outer end protecting shell bottom (4) is connected with the rear side of the outer end protecting shell top (5) through a hinge, half-wave-shaped sealing rings (8) are arranged in the outer end protecting shell bottom (4) and the outer end protecting shell top (5), 2-4 layers of half-wave-shaped sealing rings (8) are arranged in the outer end protecting shell bottom (4) and the outer end protecting shell top (5), the outer end protecting shell bottom (4) and the outer end protecting shell top (5) are closed through an outer end protecting shell locking mechanism, and then the corresponding cable ends of the cable grounding part (2) of the cable (1) are pulled out through the half-wave-shaped sealing rings (8) to be clamped tightly, the open-close type protective shell is arranged between the two outer end protective shells and comprises an open-close type protective shell bottom (10) and an open-close type protective shell top (11), the bottom (10) of the open-close type protective shell is connected with the rear side of the top (11) of the open-close type protective shell through a hinge, the bottom (10) and the top (11) of the open-close type protective shell are closed up by the open-close type protective shell locking mechanism and then wrap the cable grounding part (2), one side of the bottom (10) of the open-close type protective shell is provided with a connecting structure (12) through a rotating shaft, the upper part of the connecting structure (12) is arranged in a movable groove support (9) corresponding to the bottom of the outer end protective shell bottom (4), and the connecting structure (12) of the open-close type protective shell rotates 180 degrees after moving along the movable groove of the movable groove support and is fixed on the other side of the corresponding outer end protective shell.
2. The reverse power supply protection device for the power grid as claimed in claim 1, wherein: the bottoms of the two outer end protective shell bottoms (4) are provided with movable groove brackets (9).
3. The reverse power supply protection device for the power grid as claimed in claim 1, wherein: the outer end protecting shell locking mechanism comprises an outer end protecting shell locking hole (6) and an outer end protecting shell buckle (7), wherein the outer end protecting shell locking hole (6) and the outer end protecting shell buckle (7) are respectively fixed to the outer end protecting shell bottom (4) and the outer end protecting shell top (5) outside.
4. The reverse power supply protection device for the power grid as claimed in claim 1, wherein: the open-close type protective shell locking mechanisms are provided with a pair.
5. The reverse power supply protection device for the power grid as claimed in claim 4, wherein: the open-close type protective shell locking mechanism comprises an open-close type protective shell buckle (13) and an open-close type protective shell lock hole (14), wherein the open-close type protective shell buckle (13) and the open-close type protective shell lock hole (14) are respectively fixed on the outer sides of the open-close type protective shell bottom (10) and the open-close type protective shell top (11).
6. The reverse power supply protection device for the power grid as claimed in claim 1, wherein: a layer of waterproof sealing gasket (15) is arranged in the bottom (10) and the top (11) of the open-close type protective shell.
7. The installation and use method of the reverse power supply protection device for the power grid according to any one of claims 1 to 6 comprises the following specific steps:
the mounting steps are as follows;
a. Stripping a cable insulating layer of a cable grounding part (2) of the cable (1), and wrapping conductive gold platinum in the middle of a stripped lead;
b. The ports of the two insulating layers are wrapped with electrical tape (3), and the electrical tape (3) does not exceed the red line on the conductive platinum;
c. Selecting a half-wave type sealing ring (8) according to the size of the cable;
d. Opening the protective shells at the two ends and the open-close type protective shell in the middle, installing the protective shells at the two ends respectively corresponding to the wrapped electrical tape, and finally closing the open-close type protective shell in the middle;
the maintenance and use steps are as follows;
a. opening the middle open-close type protective shell to the lower part of the cable;
b. the movable grooves on the protective shells at the two ends of the connecting structure rotate 180 degrees, and the open-close type protective shell in the middle is closed again, so that the exposed part of the cable is grounded;
c. and after the use is finished, the middle open-close type protective shell returns to the original position.
8. The installation and use method of the reverse power supply protection device for the power grid as claimed in claim 7, wherein: the stripping length of the cable insulation layer of the cable grounding part (2) of the cable (1) in the mounting step is 70-75 mm.
9. The installation and use method of the reverse power supply protection device for the power grid as claimed in claim 7, wherein: the electrical sealing tape (3) has 4-6 layers.
10. The installation and use method of the reverse power supply protection device for the power grid as claimed in claim 7, wherein: the number of the half-wave type sealing rings (8) in the installation step is 2-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910206323.9A CN109980572B (en) | 2019-03-19 | 2019-03-19 | Reverse power supply protection device for power grid and installation and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910206323.9A CN109980572B (en) | 2019-03-19 | 2019-03-19 | Reverse power supply protection device for power grid and installation and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109980572A CN109980572A (en) | 2019-07-05 |
| CN109980572B true CN109980572B (en) | 2020-10-13 |
Family
ID=67079263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910206323.9A Active CN109980572B (en) | 2019-03-19 | 2019-03-19 | Reverse power supply protection device for power grid and installation and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109980572B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113140363B (en) * | 2021-04-25 | 2022-11-18 | 渝丰科技股份有限公司 | Resistance to compression type cable |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203456839U (en) * | 2013-09-13 | 2014-02-26 | 广州番禺电缆集团有限公司 | Waterproof device for grounding position of cable |
| CN103762446B (en) * | 2014-01-23 | 2016-06-22 | 广州番禺电缆集团有限公司 | The safeguard structure at cable ground connection position and waterproof, Moistureproof treatment method |
| CN204144857U (en) * | 2014-07-09 | 2015-02-04 | 佛山市冠通电力设备制造有限公司 | The anti-down power supply protection device of insulated conductor |
| KR101926365B1 (en) * | 2017-04-05 | 2018-12-07 | (주)혜광 | Lead-in pole for extra high voltage distribution line |
| CN208316264U (en) * | 2018-05-17 | 2019-01-01 | 广东响灯灯科技有限公司 | Anti-down power supply unit |
| CN209658745U (en) * | 2019-03-19 | 2019-11-19 | 江苏利宏原电力科技有限公司 | A kind of power grid protective device that falls to power |
-
2019
- 2019-03-19 CN CN201910206323.9A patent/CN109980572B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109980572A (en) | 2019-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109980572B (en) | Reverse power supply protection device for power grid and installation and use method | |
| RU2484564C1 (en) | Device for connection between connective parts of electric power equipment | |
| CN209658745U (en) | A kind of power grid protective device that falls to power | |
| CN201975190U (en) | Bridge connection type shifting multi-function arrester | |
| CN215911892U (en) | High-standard full-waterproof flame-retardant glue injection cold-shrinkage type intermediate joint | |
| CN205543626U (en) | Rotatable plug | |
| CN212276885U (en) | Intelligent fire-resistant high-voltage cable | |
| CN219677640U (en) | Waterproof wire connecting mechanism | |
| US5432300A (en) | Protecting construction for end portion of shielded electric cable | |
| CN210608492U (en) | Medium-voltage power cable terminal for high-temperature gas cooled reactor nuclear power station | |
| CN212627094U (en) | Enhanced cable cold-contraction terminal | |
| CN214175715U (en) | Bending-resistant flexible cable bus | |
| CN216388837U (en) | Waterproof coaxial cable connecting line | |
| CN109102926A (en) | A kind of subway cable that fire resisting is moisture-proof | |
| CN215221643U (en) | Wall bushing with double shielding structures | |
| CN214543570U (en) | Cable sheath protection device of 35kV and above | |
| CN220172724U (en) | Insulating SF6 gas looped netowrk cabinet | |
| CN214753069U (en) | Electric wire and cable | |
| CN213905010U (en) | Flame-retardant halogen-free low-smoke power wire | |
| CN208904586U (en) | Coal flame-proof mine cable Portable connecting wire box | |
| CN110517924B (en) | Novel isolating switch insulating sheath | |
| CN213366227U (en) | 1kV crosslinked polyethylene power cable | |
| CN209046228U (en) | Cable termination | |
| CN212675933U (en) | Compound anti-interference cable of multilayer protection | |
| CN216529594U (en) | Automobile wire harness connector structure with variable wire outgoing guide and automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |