CN109686483B - High-strength torsion-resistant corrosion-resistant special cable for coastal wind turbine generator - Google Patents
High-strength torsion-resistant corrosion-resistant special cable for coastal wind turbine generator Download PDFInfo
- Publication number
- CN109686483B CN109686483B CN201910069206.2A CN201910069206A CN109686483B CN 109686483 B CN109686483 B CN 109686483B CN 201910069206 A CN201910069206 A CN 201910069206A CN 109686483 B CN109686483 B CN 109686483B
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- cable
- steel sheet
- smoke
- shaped
- 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
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
- H01B7/324—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising temperature sensing means
Abstract
The invention discloses a high-strength torsion-resistant corrosion-resistant special cable for a coastal wind turbine generator, which comprises a core wire body and a protection tube, wherein the core wire body comprises a plurality of cable cores and an outer sheath surrounding the cable cores, the cable cores sequentially comprise a conductor, an insulating layer, a flame-retardant layer, an armor layer and an inner sheath from inside to outside, the cross section of the outer sheath is in an equilateral triangle shape, the outer sheath is provided with 3 side surfaces, each side surface is fixedly connected with a stainless steel sheet-shaped unit extending along the length direction of the cable, a stainless steel rope with a circular cross section is arranged at the side edge of each stainless steel sheet-shaped unit, a cavity is arranged in each stainless steel sheet-shaped unit, each stainless steel sheet-shaped unit also comprises a through hole penetrating through the upper surface and the lower surface of each stainless steel sheet-shaped unit, the through hole is positioned between each stainless steel rope, the section of the strip-shaped groove is arc-shaped. The cable of the invention has good insulation, flame retardance and torsion resistance.
Description
Technical Field
The invention relates to the field of cables, in particular to a high-strength torsion-resistant corrosion-resistant special cable for a coastal wind turbine generator.
Background
With the development of new energy technology, the power generation technology of new energy such as wind power generation, photovoltaic power generation and the like is more and more widely applied, and wind energy cables, wind generating sets and other equipment are matched with the wind power generation technology; the general wind energy cable structurally comprises a conductor, an insulating layer and a sheath layer, wherein the conductor is wrapped in the insulating layer, and the insulating layer is wrapped in the sheath layer. However, due to the special use environment of the wind energy cable, the cable needs to have the characteristics of oxidation resistance, cold resistance, oil stain resistance, corrosion resistance, radiation resistance, torsion resistance, fatigue resistance, high flexibility and the like. And because of the transmission of electric power, high heat dissipation performance and high flame retardancy are also required, the existing wind energy cable cannot fully meet these requirements.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to overcome the defects of the prior art and provides a high-strength torsion-resistant corrosion-resistant special cable for a coastal wind turbine generator.
The technical scheme is as follows: coastal cable for wind turbine generator system, including heart yearn body and protection tube, the heart yearn body includes a plurality of cable cores and surrounds the oversheath of cable core, the cable core includes conductor, insulating layer, fire-retardant layer, armor and interior sheath from inside to outside in proper order, the cross-section of oversheath is equilateral triangle, the oversheath has 3 sides, every side fixedly connected with one stainless steel sheet form unit that extends along cable length direction, the side department of stainless steel sheet form unit has the cross-section and is the circular shape stainless steel cable, have the cavity in the stainless steel sheet form unit, the stainless steel sheet form unit still includes the through hole that runs through stainless steel sheet form unit upper and lower surface, the through hole is located between stainless steel cable and the oversheath, the cross-section of protection tube is ring shape, the inside wall of protection tube has 3 bar grooves, in every stainless steel cable embedding bar groove, the cross section of the strip-shaped groove is arc-shaped.
Further, one part of each stainless steel sheet-shaped unit is fixedly bonded with the side surface of the outer sheath through bonding glue; each stainless steel sheet-shaped unit is provided with a row of the through holes.
Furthermore, the space in the protective tube is divided into 3 spaces by the core wire body, the 3 spaces are distributed in a triangular shape, and the through holes in the stainless steel sheet-shaped units enable the spaces on two sides of the stainless steel sheet-shaped units to be communicated.
The stainless steel sheet-shaped unit is characterized by further comprising a fan and an inert gas storage device, wherein one end of the cavity of the stainless steel sheet-shaped unit is closed, and the other end of the cavity is open along the length direction of the cable; the protection tube is arranged along the length direction of the cable, one end of the protection tube is closed, and the other end of the protection tube is open; the fan is connected with a first main pipe, the end part of the first main pipe is connected with 3 first branch pipes, and each first branch pipe is communicated with a cavity of one stainless steel sheet-shaped unit; the inert gas storage device is connected with a second main pipe, a valve is arranged on the second main pipe, the end part of the second main pipe is connected with 3 second branch pipes, and each second branch pipe is communicated with one space of the protection pipe.
Furthermore, a plurality of support columns are arranged in the cavity of the stainless steel sheet-shaped unit in two rows.
Further, the diameter of the cross section of the stainless steel rope is more than 1.5 times of the distance between the two side surfaces of the stainless steel sheet unit.
Further, the insulating layer is an ethylene propylene rubber insulating layer; the flame-retardant layer is a low-smoke halogen-free flame-retardant layer.
Further, the inner sheath layer is made of polyethylene material; the outer sheath is formed by extrusion molding; the armor layer is a steel wire armor layer.
The protection tube is internally provided with a plurality of temperature sensors and a plurality of smoke sensors, and the protection tube is internally provided with a sensor cable for providing power and transmitting signals for the smoke sensors and the temperature sensors; the controller controls the fan and the valve to be closed when the measured values of all the temperature sensors are smaller than a first threshold value and all the smoke sensors do not sense smoke; when the measurement values of more than one temperature sensor are greater than or equal to a first threshold value, the measurement values of all the temperature sensors are smaller than a second threshold value, and smoke is not sensed by all the smoke sensors, the fan is started, and the valve is closed; when the measured value of more than one temperature sensor is greater than or equal to a second threshold value or more than one smoke sensor senses smoke, the fan is closed, and the valve is opened.
Further, the first branch pipe is connected with the closed end of the stainless steel sheet-shaped unit; the second branch pipe is connected with the closed end of the protection pipe.
Has the advantages that: the cable has the advantages that the inner protection layer, the outer sheath and the protection pipe are arranged, so that the cable has the performances of high strength, corrosion resistance and the like, the hard stainless steel pipe sheet units are arranged, the torsion resistance can be effectively realized, the high-efficiency heat dissipation is realized by the cavities in the stainless steel sheet units, and the protection pipe and the inert gas storage device effectively realize flame-retardant fire extinguishing.
Drawings
FIG. 1 is a schematic cross-sectional view of a cable;
FIG. 2 is a schematic view of the heat dissipation and fire protection of the cable;
fig. 3 is a schematic view of a protective tube.
Detailed Description
Reference numerals: 1.1 a conductor; 1.2 an insulating layer; 1.3 flame retardant layer; 1.4 armor layers; 1.5 inner protecting layer; 1.6 outer sheath; 2 stainless steel sheet-like units; 2.1 a cavity; 2.2 supporting columns; 2.3 through holes; 2.4 stainless steel cable; 3 protecting the tube; 3.1 a strip-shaped groove; 4.1 inert gas storage means; 4.2 blower.
The utility model provides a coastal wind turbine generator system is with resistant corrosion and torsion of high strength special cable that twists reverse, includes heart yearn body and protection tube, the heart yearn body includes a plurality of cable cores and surrounds oversheath 1.6 of the cable core, the cable core includes conductor 1.1, insulating layer 1.2, fire-retardant layer 1.3, armor 1.4 and interior sheath 1.5 from inside to outside in proper order, the cross-section of oversheath is equilateral triangle, the oversheath has 3 sides, every side fixedly connected with one along the stainless steel sheet form unit 2 of cable length direction extension, the side department of stainless steel sheet form unit 2 has the cross-section to be circular shape stainless steel cable 2.4, cavity 2.1 has in the stainless steel sheet form unit, stainless steel sheet form unit still includes the through hole 2.3 that runs through stainless steel sheet form unit upper and lower surface, the through hole is located between stainless steel cable and the oversheath, the cross-section of protection tube 3 is, the inside wall of protection tube has 3 bar grooves, and every stainless steel cable imbeds in a bar groove 3.1, the cross-section of bar groove is the camber line.
One part of each stainless steel sheet-shaped unit is fixedly bonded with the side surface of the outer sheath through bonding glue; each stainless steel sheet-shaped unit is provided with a row of the through holes. The space in the protective tube is divided into 3 spaces by the core wire body, the 3 spaces are distributed in a triangular shape, and the through holes in the stainless steel sheet-shaped units enable the spaces on two sides of the stainless steel sheet-shaped unit 2 to be communicated. The cable is characterized by further comprising a fan 4.2 and an inert gas storage device 4.1, wherein the cavity of the stainless steel sheet-shaped unit is closed at one end and open at the other end along the length direction of the cable; the protection tube is arranged along the length direction of the cable, one end of the protection tube is closed, and the other end of the protection tube is open; the fan is connected with a first main pipe, the end part of the first main pipe is connected with 3 first branch pipes, and each first branch pipe is communicated with a cavity of one stainless steel sheet-shaped unit; the inert gas storage device is connected with a second main pipe, a valve is arranged on the second main pipe, the end part of the second main pipe is connected with 3 second branch pipes, and each second branch pipe is communicated with one space of the protection pipe. The cavity of the stainless steel sheet-shaped unit 2 is internally provided with a plurality of supporting columns 2.2, and the supporting columns 2.2 are arranged in two rows. The diameter of the section of the stainless steel rope 2.4 is more than 1.5 times of the distance between the two side surfaces of the stainless steel sheet-shaped unit 2.
The insulating layer is an ethylene propylene rubber insulating layer; the flame-retardant layer is a low-smoke halogen-free flame-retardant layer. The inner protective layer is made of polyethylene material; the outer sheath is formed by extrusion molding; the armor layer is a steel wire armor layer. The smoke sensor protection device comprises a protection pipe, and is characterized by further comprising a control unit, a plurality of temperature sensors and a plurality of smoke sensors, wherein the temperature sensors and the smoke sensors are arranged in the protection pipe, and a sensor cable used for providing power for the smoke sensors and the temperature sensors and transmitting signals is further arranged in the protection pipe; the controller controls the fan and the valve to be closed when the measured values of all the temperature sensors are smaller than a first threshold value and all the smoke sensors do not sense smoke; when the measurement values of more than one temperature sensor are greater than or equal to a first threshold value, the measurement values of all the temperature sensors are smaller than a second threshold value, and smoke is not sensed by all the smoke sensors, the fan is started, and the valve is closed; when the measured value of more than one temperature sensor is greater than or equal to a second threshold value or more than one smoke sensor senses smoke, the fan is closed, and the valve is opened.
As shown in the figure, the cable has the advantages that the core wire body relates to the cladding such as the inner protection layer and the outer sheath, the section of the outer sheath is in an equilateral triangle shape, so that the cable is good in overall torsion resistance, abrasion resistance, flame retardance and insulation performance, and in addition, the stainless steel tube sheet units are involved, and the stainless steel sheet units are embedded in the protection tube, so that the torsion resistance is further improved. During normal use transmission power, if cable surface temperature is too high, then start the fan and blow, dispel the heat in the cavity to stainless steel sheet form unit to quick heat dissipation when the cable takes place to burn, for example the temperature rises unusually or when sensing smog, utilizes inert gas to fill the protection tube rapidly, thereby puts out a fire fast fire-retardantly. Of course, a wireless communication unit may be provided, and when the measured value of more than one temperature sensor is greater than or equal to the second threshold value or more than one smoke sensor senses smoke, the wireless communication unit is enabled to transmit an alarm signal. The through holes are designed to communicate different spaces in the protective tube, so that the temperature sensor and the smoke sensor arranged in one space can sense the temperature and smoke of other spaces.
While the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.
Claims (5)
1. The high-strength torsion-resistant corrosion-resistant special cable for the coastal wind turbine generator is characterized by comprising a core wire body and a protection pipe, wherein the core wire body comprises a plurality of cable cores and an outer sheath surrounding the cable cores, the cable cores sequentially comprise conductors, insulating layers, flame-retardant layers, armor layers and an inner sheath from inside to outside, the cross section of the outer sheath is an equilateral triangle, the outer sheath is provided with 3 sides, each side is fixedly connected with a stainless steel sheet unit extending along the length direction of the cable, the side edge of the stainless steel sheet unit is provided with a stainless steel rope with a circular cross section, a cavity is arranged in the stainless steel sheet unit, the stainless steel sheet unit further comprises a through hole penetrating through the upper surface and the lower surface of the stainless steel sheet unit, the through hole is positioned between the stainless steel rope and the outer sheath, the cross section of the protection pipe is in a circular ring shape, and the, each stainless steel rope is embedded into a strip-shaped groove, and the section of each strip-shaped groove is arc-shaped; one part of each stainless steel sheet-shaped unit is fixedly bonded with the side surface of the outer sheath through bonding glue; each stainless steel sheet-shaped unit is provided with a row of through holes; the space in the protective tube is divided into 3 spaces by the core wire body, the 3 spaces are distributed in a triangular shape, and the through holes in the stainless steel sheet-shaped units enable the spaces on two sides of the stainless steel sheet-shaped units to be communicated; the cable also comprises a fan and an inert gas storage device, wherein the cavity of the stainless steel sheet-shaped unit is closed at one end and open at the other end along the length direction of the cable; the protection tube is arranged along the length direction of the cable, one end of the protection tube is closed, and the other end of the protection tube is open; the fan is connected with a first main pipe, the end part of the first main pipe is connected with 3 first branch pipes, and each first branch pipe is communicated with a cavity of one stainless steel sheet-shaped unit; the inert gas storage device is connected with a second main pipe, a valve is arranged on the second main pipe, the end part of the second main pipe is connected with 3 second branch pipes, and each second branch pipe is communicated with one space of the protection pipe; the cable further comprises a control unit, a plurality of temperature sensors and a plurality of smoke sensors, wherein the temperature sensors and the smoke sensors are arranged in the protective tube, and a sensor cable for providing power and transmitting signals for the smoke sensors and the temperature sensors is further arranged in the protective tube; the control unit controls the fan and the valve to be closed when the measured values of all the temperature sensors are smaller than a first threshold value and all the smoke sensors do not sense smoke; when the measurement values of more than one temperature sensor are greater than or equal to a first threshold value, the measurement values of all the temperature sensors are smaller than a second threshold value, and smoke is not sensed by all the smoke sensors, the fan is started, and the valve is closed; when the measured value of more than one temperature sensor is greater than or equal to a second threshold value or more than one smoke sensor senses smoke, the fan is closed, and the valve is opened.
2. The high-strength torsion-resistant corrosion-resistant special cable for the coastal wind turbine generator set as recited in claim 1, wherein a plurality of support columns are arranged in two rows in the cavity of the stainless steel sheet unit.
3. The special high-strength torsion-resistant corrosion-resistant cable for the coastal wind turbine generator set as claimed in claim 1, wherein the diameter of the section of the stainless steel rope is more than 1.5 times of the distance between the two side surfaces of the stainless steel sheet-shaped unit.
4. The high-strength torsion-resistant corrosion-resistant special cable for the coastal wind turbine generator set as recited in claim 1, wherein the insulating layer is an ethylene propylene rubber insulating layer; the flame-retardant layer is a low-smoke halogen-free flame-retardant layer.
5. The high-strength torsion-resistant corrosion-resistant special cable for the coastal wind turbine generator set as recited in claim 1, wherein the inner sheath is made of polyethylene material; the outer sheath is formed by extrusion molding; the armor layer is a steel wire armor layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910069206.2A CN109686483B (en) | 2019-01-24 | 2019-01-24 | High-strength torsion-resistant corrosion-resistant special cable for coastal wind turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910069206.2A CN109686483B (en) | 2019-01-24 | 2019-01-24 | High-strength torsion-resistant corrosion-resistant special cable for coastal wind turbine generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109686483A CN109686483A (en) | 2019-04-26 |
| CN109686483B true CN109686483B (en) | 2020-04-17 |
Family
ID=66194520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910069206.2A Active CN109686483B (en) | 2019-01-24 | 2019-01-24 | High-strength torsion-resistant corrosion-resistant special cable for coastal wind turbine generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109686483B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320623B (en) * | 2019-07-09 | 2020-07-10 | 陕西理工大学 | Twisted inward-misalignment-force type optical cable |
| CN110706857B (en) * | 2019-10-16 | 2020-11-20 | 扬州市红旗电缆制造有限公司 | High ageing resistance does not have steamed low fire-retardant marine frock spare special cable of cigarette |
| CN114460699B (en) * | 2021-12-27 | 2024-02-20 | 富通集团（嘉善）通信技术有限公司 | Anti-twisting optical cable |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57138711A (en) * | 1981-02-19 | 1982-08-27 | Nippon Telegraph & Telephone | Cable structure |
| HU205479B (en) * | 1986-03-04 | 1992-04-28 | Magyar Kabel Muevek | Medium-voltage cable |
| CN102629506A (en) * | 2011-02-04 | 2012-08-08 | 日立电线株式会社 | Three-conductor cable |
| CN104966579A (en) * | 2015-05-29 | 2015-10-07 | 张家港金海港电线电缆有限公司 | Wear-resistant pressure-resistant cable |
| CN204884615U (en) * | 2015-07-07 | 2015-12-16 | 湖北恒泰电线电缆有限公司 | Reinforced aluminium alloy cable |
| CN206249923U (en) * | 2016-11-23 | 2017-06-13 | 青岛康伟线缆有限公司 | A kind of environment-friendly type protection of electrical cable high |
| CN107545953A (en) * | 2016-06-23 | 2018-01-05 | 上海市高桥电缆厂有限公司 | CA cable assembly |
| CN208400550U (en) * | 2018-03-30 | 2019-01-18 | 扬州曙光电缆股份有限公司 | Wind energy cable is pressed in one kind |
-
2019
- 2019-01-24 CN CN201910069206.2A patent/CN109686483B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57138711A (en) * | 1981-02-19 | 1982-08-27 | Nippon Telegraph & Telephone | Cable structure |
| HU205479B (en) * | 1986-03-04 | 1992-04-28 | Magyar Kabel Muevek | Medium-voltage cable |
| CN102629506A (en) * | 2011-02-04 | 2012-08-08 | 日立电线株式会社 | Three-conductor cable |
| CN104966579A (en) * | 2015-05-29 | 2015-10-07 | 张家港金海港电线电缆有限公司 | Wear-resistant pressure-resistant cable |
| CN204884615U (en) * | 2015-07-07 | 2015-12-16 | 湖北恒泰电线电缆有限公司 | Reinforced aluminium alloy cable |
| CN107545953A (en) * | 2016-06-23 | 2018-01-05 | 上海市高桥电缆厂有限公司 | CA cable assembly |
| CN206249923U (en) * | 2016-11-23 | 2017-06-13 | 青岛康伟线缆有限公司 | A kind of environment-friendly type protection of electrical cable high |
| CN208400550U (en) * | 2018-03-30 | 2019-01-18 | 扬州曙光电缆股份有限公司 | Wind energy cable is pressed in one kind |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109686483A (en) | 2019-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109686483B (en) | High-strength torsion-resistant corrosion-resistant special cable for coastal wind turbine generator | |
| CN201868135U (en) | Seabed optical fiber composite high-voltage cable with detecting function | |
| ITMI20121899A1 (en) | ELECTRIC CABLE FOR A SOLAR PLANT FOR THE GENERATION OF ELECTRIC ENERGY AND THERMAL ENERGY AND THE PLANT THAT INCLUDES IT | |
| CN210378552U (en) | Environment-friendly anti-dragging high-temperature-resistant industrial cable | |
| CN111768914A (en) | Thermal shrinkage and cold expansion type self-on-off cable sheath | |
| CN105913960B (en) | A kind of optical electrical hybrid cable | |
| CN106024176B (en) | A kind of optical electrical hybrid cable | |
| CN216817896U (en) | Deformation-resistant armored insulating power cable | |
| CN209183310U (en) | A kind of fireproof power cable of all fronts channel Temperature Measuring alarm | |
| CN111653401A (en) | Steel wire armored submarine cable design method | |
| CN109390093B (en) | Tensile photovoltaic cable capable of adapting to severe environment | |
| CN207381135U (en) | A kind of automatic constant-temperature electric heat tracing type cable | |
| CN109148028B (en) | Intelligent cable | |
| CN112420269A (en) | Fire-resistant high temperature resistant plastic insulation control cable | |
| CN105913965B (en) | A kind of optical electrical hybrid cable | |
| CN209674974U (en) | A kind of fire prevention MV shielded cable with temp sensing function | |
| CN210443320U (en) | Flame-retardant heat-resistant cable | |
| CN203673866U (en) | Power cable capable of monitoring operating temperature | |
| CN219392977U (en) | High-temperature-resistant and aging-resistant thermometer cable | |
| CN206806070U (en) | A kind of home improvement wire of double-deck fire wall | |
| CN201084482Y (en) | A buoyancy cable | |
| CN104517676A (en) | Cold-resistant and twisting-resistant cable with copper-clad aluminum core | |
| CN111243791A (en) | High-sealing load-bearing detection cable | |
| CN210956206U (en) | Long-life moves accuse composite cable | |
| CN220357843U (en) | Moisture-proof cable |
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 |