CN113488259B - Underground cable - Google Patents
Underground cable Download PDFInfo
- Publication number
- CN113488259B CN113488259B CN202110816179.8A CN202110816179A CN113488259B CN 113488259 B CN113488259 B CN 113488259B CN 202110816179 A CN202110816179 A CN 202110816179A CN 113488259 B CN113488259 B CN 113488259B
- Authority
- CN
- China
- Prior art keywords
- cable
- arc
- movable section
- supporting base
- hole
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 230000000694 effects Effects 0.000 claims description 16
- 239000010410 layer Substances 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000000741 silica gel Substances 0.000 claims description 12
- 229910002027 silica gel Inorganic materials 0.000 claims description 12
- 239000011261 inert gas Substances 0.000 claims description 7
- 239000011229 interlayer Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 3
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 abstract description 4
- 230000007306 turnover Effects 0.000 abstract description 4
- 238000010304 firing Methods 0.000 description 8
- 230000008719 thickening Effects 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
- Installation Of Indoor Wiring (AREA)
Abstract
The invention discloses an underground cable, which comprises more than one cable arranged in a cable well, wherein the bottom of each cable is provided with a supporting base plate (6), the supporting base plates (6) are arranged along the length direction of the cable, an arc-shaped sealing surface is arranged on each supporting base plate (6), part of the cable is buckled in the arc-shaped sealing surface and is contacted with the arc-shaped sealing surface, and more than one concave cavity (4) is formed in each supporting base plate (6) along the length direction of the supporting base plate (6); the invention can turn over the movable section of the cable in the area after the surface layer of the cable is damaged, so that the originally exposed damaged opening is turned over to the bottom to be sealed and hidden, thereby solving a plurality of problems, achieving physical fire extinguishing and gas fire extinguishing in emergency, and increasing the use safety and the service life of underground cable arrangement.
Description
Technical Field
The invention relates to the field of cables, in particular to an underground cable.
Background
A large number of cables are arranged in the cable well, and the cables have long span and are difficult to overhaul. After the underground cable is laid, the cable is aged along with the use time, so that spontaneous combustion exists, the fire resistance of the existing underground cable is poor, and once local fire occurs, the fire can quickly spread to cause serious fire.
Furthermore, these cables that lay in the pit, long-term quiescent condition lays in the pit, can have more organisms such as mouse in the well, these organisms can bite the cable, lead to the cable epidermis to be impaired, or cable exposed surface ageing fracture for a long time, or because external equipment maloperation operation etc. all can lead to the damage on cable top layer, and behind the damaged cable top layer, because expose the damaged mouth for a long time, outside steam or dust etc. all can pass the damaged mouth on top layer and enter into the cable inside and act on the core wire, finally lead to the impaired of core wire, and the damaged mouth that exposes for a long time more can become the access point who destroys the core wire, so there is certain potential safety hazard in present cable laying static mode in the pit.
Disclosure of Invention
The invention aims to solve the technical problem that the underground cable can turn over the movable section of the cable in the area after the surface layer of the cable is damaged, so that the originally exposed damaged port is turned over to the bottom to be sealed and hidden, thus solving a plurality of problems, achieving physical fire extinguishing and gas fire extinguishing in emergency, and increasing the use safety and service life of underground cable arrangement.
The invention is realized by the following technical scheme: the underground cable comprises more than one cable arranged in a cable well, wherein a supporting base plate is arranged at the bottom of each cable and arranged along the length direction of the cable, an arc-shaped sealing surface is arranged on the supporting base plate, part of the cable is buckled in the arc-shaped sealing surface and is contacted with the arc-shaped sealing surface, and more than one concave cavity is formed in the supporting base plate along the length direction of the supporting base plate;
the cable comprises a cable protection shell and cable cores, wherein the cable cores are arranged in the cable protection shell, the cable protection shell comprises more than one movable section and more than one fixing part, one movable section is arranged between every two fixing parts, the bottom of each fixing part is provided with a positioning rod, one end of each positioning rod is assembled with the corresponding fixing part in a positioning mode, and the other end of each positioning rod is installed in the corresponding concave cavity in a positioning mode;
two sides of the fixing part are respectively provided with two arc-shaped guide rail grooves, the outer side end of each arc-shaped guide rail groove is provided with more than one positioning concave hole around the fixing part in a circle, a through hole penetrates through the middle of the fixing part, a cable core wire penetrates through the through hole and is in sealing contact with the inner wall of the through hole, and a spring is uniformly distributed in each arc-shaped guide rail groove;
all be provided with an intermediate layer in the activity section, the intermediate layer intussuseption is filled and is set up an elasticity inflation spare, just is being provided with more than one aperture on the activity section terminal surface of intermediate layer and elasticity inflation spare, and every aperture corresponds a location shrinkage pool, and after the inflation back is aerifyd to elasticity inflation spare, elasticity inflation spare passed the aperture and outwards heaved formation location bump, the position that corresponds the arc guide rail groove on the both sides terminal surface of activity section still is provided with the direction slider, and the direction slider slides and detains in the arc guide rail inslot, through the spring compression of direction slider with the arc guide rail inslot, fixes a position the bump location this moment and detains in the location shrinkage pool.
As a preferred technical scheme, the elastic expansion pieces are elastic air bags, air storage cavities are arranged in the elastic air bags, and inert gas is filled in the air storage cavities.
As a preferred technical scheme, a layer of silica gel sealing layer is arranged on the arc-shaped sealing surface, and the movable section part of the cable is in contact with the silica gel sealing layer.
As the preferred technical scheme, more than one annular concave cavity is formed in the end face of the movable section, and silica gel sealing rings are embedded into the annular concave cavities and are O-shaped.
As the preferred technical scheme, thickened parts are formed at the positions, opposite to the small holes, of the end surfaces of the two sides of the elastic expansion part, the thickened parts are buckled into the small holes, the outer side surfaces of the thickened parts are flush with the end surfaces of the movable sections, and after the elastic expansion part is inflated and expanded, the thickened parts are ejected out of the small holes to form positioning salient points.
As a preferable technical scheme, the fireproof coatings are arranged on the outer portions of the cables.
As the preferred technical scheme, the elastic deformation restoring force after the spring is compressed is larger than the sum of the friction force between the movable section and the arc-shaped sealing surface and between the movable section and the fixed part.
The invention has the beneficial effects that: after the surface layer of the cable is damaged to form a damaged opening, automatic turnover of a movable section can be realized, so that an original unexposed surface is turned over to the outside, and the exposed and damaged surface is hidden, so that the damaged opening can be hidden, the safety threat caused by long-term exposure of the damaged opening to an internal core wire is prevented, and the service life of the cable is prolonged;
in addition, when flame appears outside the cable, the fireproof layer is used for preventing fire, after long-time firing, if the movable section of the cable is fired to penetrate to form a damaged opening, the movable section of the cable can be turned over, the inert gas in the cable flows out, the cable on the side which is not in contact with the flame continues to be in contact with the flame, the fireproof time of the cable is prolonged, and the strength of the external flame can be reduced by the aid of the flowing-out inert gas;
if the cable is lighted and appear after the damaged mouth, the cable can overturn this moment, utilizes the upset during with the sealed frictional contact force of arc, reaches the purpose that a physics friction was put out a fire for the firing point upset is to down, utilizes the sealed face of arc to wrap up the firing face and hide the firing face, increases the fire safety nature of cable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the active segment of the present invention;
FIG. 3 is an end view of the free end of the present invention;
FIG. 4 is a schematic end view of a fixing portion according to the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The use of terms such as "upper," "above," "lower," "below," and the like in describing relative spatial positions herein is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly
In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1-4, the downhole cable of the present invention comprises more than one cable arranged in a cable well, a support pad 6 is arranged at the bottom of each cable, the support pads 6 are arranged along the length direction of the cable, the support pad 6 is provided with an arc-shaped sealing surface, a part of the cable is buckled in the arc-shaped sealing surface and contacts with the arc-shaped sealing surface, and the support pad 6 is provided with more than one concave cavity 4 along the length direction of the support pad 6;
the cable comprises a cable protection shell and cable core wires 3, the cable core wires 3 are arranged in the cable protection shell, the cable protection shell comprises more than one section of movable section 1 and more than one fixing section 2, one section of movable section 1 is arranged between every two fixing sections 2, the bottom of each fixing section 2 is provided with a positioning rod 5, one end of each positioning rod 5 is positioned and assembled with the corresponding fixing section 2, and the other end of each positioning rod 5 is positioned and arranged in the corresponding cavity 4;
as shown in fig. 4, two arc-shaped guide rail grooves 8 are respectively arranged on two sides of the fixing part 2, more than one positioning concave hole 11 is arranged at the outer side end of each arc-shaped guide rail groove 8 in a circle around the fixing part, a through hole 7 penetrates through the middle of the fixing part 2, the cable core 3 penetrates through the through hole and is in sealing contact with the inner wall of the through hole 7, and a spring 9 is uniformly distributed in each arc-shaped guide rail groove;
as shown in fig. 2, an interlayer is arranged in each movable section 1, an elastic expansion piece 12 is filled in the interlayer, more than one small hole 14 is arranged on the end face of each movable section, which is opposite to the interlayer and the elastic expansion piece, each small hole 14 corresponds to one positioning concave hole 11, after the elastic expansion piece is inflated and expanded, the elastic expansion piece penetrates through the small hole and bulges outwards to form positioning convex points, a guide slider 13 is further arranged at the position corresponding to the arc-shaped guide rail groove on the end faces of the two sides of each movable section 1, the guide slider 13 is buckled into the arc-shaped guide rail groove 8 in a sliding manner, a spring 9 in the arc-shaped guide rail groove 8 is compressed through the guide slider 13, and the positioning convex points are buckled into the positioning concave holes at the moment to complete positioning assembly of the cable.
In this embodiment, the elastic expansion member 12 is an elastic airbag, and a gas storage cavity is disposed inside the elastic airbag, and the gas storage cavity is filled with inert gas.
Wherein, be provided with one deck silica gel sealing layer 61 on the arc sealed face, 1 part of activity section and the contact of silica gel sealing layer of cable appear as the damaged mouth to along with activity section upset to the bottom after, can do benefit to the sealed damaged mouth of silica gel sealing layer, reach the purpose of a sealed damaged mouth, the one side upset of the activity section that is in encapsulated situation this moment always is outside, resists flame or resists external force.
In this embodiment, set up more than one annular cavity on the terminal surface of activity section 1, all the embedding is provided with the silica gel sealing ring in the annular cavity, and the silica gel sealing ring is "O" type, increases the contact leakproofness of activity section and fixed part.
Wherein, the 12 both sides terminal surfaces of elasticity inflation spare just all form a thickening portion to the position of aperture, thickening portion lock-in the aperture, and the lateral surface and the activity section terminal surface parallel and level of thickening portion, aerify the inflation back when elasticity inflation spare, thickening portion is ejecting outside and form the location bump to the aperture, aerify the back when elasticity inflation spare, can make thickening portion one end ejecting to the outside of activity section, can accomplish the location with the fixed part, in case elasticity inflation spare is damaged, can make the activity section retract, the spring that the compressed this moment loses the confining force, the spring resumes deformation, can drive the direction slider and remove along arc guide rail groove, and then drive the relative fixed part rotation of activity section.
Wherein, the outside of cable all is provided with fire protection coating, and the elastic deformation after the spring 9 compression restores force and is greater than the sealed face of activity section 1 and arc and adds the frictional force sum between activity section 1 and the fixed part 2 for the spring can drive the rotation of activity section.
The invention has the beneficial effects that: after the surface layer of the cable is damaged to form a damaged opening, automatic turnover of a movable section can be realized, so that an original unexposed surface is turned over to the outside, and the exposed and damaged surface is hidden, so that the damaged opening can be hidden, the safety threat caused by long-term exposure of the damaged opening to an internal core wire is prevented, and the service life of the cable is prolonged;
in addition, when flame appears outside the cable, the fireproof layer is used for preventing fire, after long-time firing, if the movable section of the cable is fired to penetrate to form a damaged opening, the movable section of the cable can be turned over, the inert gas in the cable flows out, the cable on the side which is not in contact with the flame continues to be in contact with the flame, the fireproof time of the cable is prolonged, and the strength of the external flame can be reduced by the aid of the flowing-out inert gas;
if the cable is lighted and appear after the damaged mouth, the cable can overturn this moment, utilizes the upset during with the sealed frictional contact force of arc, reaches the purpose that a physics friction was put out a fire for the firing point upset is to down, utilizes the sealed face of arc to wrap up the firing face and hide the firing face, increases the fire safety nature of cable.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (6)
1. A downhole cable, comprising: the cable fixing device comprises more than one cable arranged in a cable well, wherein a supporting base plate (6) is arranged at the bottom of each cable, the supporting base plates (6) are arranged along the length direction of the cable, an arc-shaped sealing surface is arranged on each supporting base plate (6), part of the cable is buckled in the arc-shaped sealing surface and is contacted with the arc-shaped sealing surface, and more than one concave cavity (4) is formed in each supporting base plate (6) along the length direction of the supporting base plate (6);
the cable comprises a cable protection shell and cable cores (3), the cable cores (3) are arranged in the cable protection shell, the cable protection shell comprises more than one movable section (1) and more than one fixed part (2), one movable section (1) is installed between every two fixed parts (2), the bottom of each fixed part (2) is provided with a positioning rod (5), one end of each positioning rod (5) is positioned and assembled with the corresponding fixed part (2), and the other end of each positioning rod (5) is positioned and installed in the corresponding cavity (4);
two arc-shaped guide rail grooves (8) are respectively arranged on two sides of the fixing part (2), more than one positioning concave hole (11) is formed in the outer side end of each arc-shaped guide rail groove (8) in a circle around the fixing part, a through hole (7) penetrates through the middle of the fixing part (2), the cable core wire (3) penetrates through the through hole and is in sealing contact with the inner wall of the through hole (7), and a spring (9) is uniformly distributed in each arc-shaped guide rail groove;
an interlayer is arranged in each movable section (1), an elastic expansion piece (12) is filled in each interlayer, more than one small hole (14) is arranged on the end face of the movable section opposite to the interlayer and the elastic expansion piece, each small hole (14) corresponds to one positioning concave hole (11), when the elastic expansion piece is inflated and expanded, the elastic expansion piece passes through the small hole and bulges outwards to form a positioning salient point, the two side end surfaces of the movable section (1) are provided with guide sliding blocks (13) corresponding to the arc-shaped guide rail grooves, the guide sliding blocks (13) are buckled in the arc-shaped guide rail grooves (8) in a sliding way, the spring (9) in the arc-shaped guide rail groove (8) is compressed through the guide slide block (13), and at the moment, the positioning salient point is positioned and buckled in the positioning concave hole, the elastic expansion pieces (12) are all elastic air bags, air storage cavities are arranged in the elastic air bags, and inert gas is filled in the air storage cavities.
2. A downhole cable according to claim 1, wherein: a silica gel sealing layer (61) is arranged on the arc-shaped sealing surface, and the movable section (1) of the cable is partially in contact with the silica gel sealing layer.
3. A downhole cable according to claim 1, wherein: more than one annular concave cavity is seted up on the terminal surface of activity section (1), and all the embedding is provided with the silica gel sealing ring in the annular concave cavity, the silica gel sealing ring is "O" type.
4. A downhole cable according to claim 1, wherein: the end surfaces of two sides of the elastic expansion part (12) are opposite to the position of the small hole to form a thickened part, the thickened part is buckled into the small hole, the outer side surface of the thickened part is flush with the end surface of the movable section, and after the elastic expansion part is inflated and expanded, the thickened part is ejected out of the small hole to form a positioning salient point.
5. A downhole cable according to claim 1, wherein: and fireproof coatings are arranged outside the cables.
6. A downhole cable according to claim 1, wherein: the elastic deformation restoring force of the compressed spring (9) is greater than the sum of the friction force between the movable section (1) and the arc-shaped sealing surface and the friction force between the movable section (1) and the fixed part (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110816179.8A CN113488259B (en) | 2021-07-19 | 2021-07-19 | Underground cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110816179.8A CN113488259B (en) | 2021-07-19 | 2021-07-19 | Underground cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113488259A CN113488259A (en) | 2021-10-08 |
| CN113488259B true CN113488259B (en) | 2022-09-20 |
Family
ID=77942267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110816179.8A Active CN113488259B (en) | 2021-07-19 | 2021-07-19 | Underground cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113488259B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1086314B (en) * | 1954-02-01 | 1960-08-04 | Pirelli General Cable Works | Device for corrugating the sheath of an electrical cable |
| CN101933720A (en) * | 2010-08-23 | 2011-01-05 | 苏州升德精密电气有限公司 | Sliding rail return mechanism |
| CN110364299A (en) * | 2019-08-07 | 2019-10-22 | 夏纪成 | Composite fireproof cable |
| CN111354511A (en) * | 2020-04-16 | 2020-06-30 | 徐立平 | Safety cable |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007074480A1 (en) * | 2005-12-28 | 2007-07-05 | Prysmian Cavi E Sistemi Energia S.R.L. | Joining method and related junction for electric cables, tubular covering sleeve for electric-cable junctions and process for manufacturing the same |
| CN109087738B (en) * | 2018-08-23 | 2020-01-24 | 上海沪达高温线缆有限公司 | Fire-resistant cable |
| CN110047620B (en) * | 2019-05-22 | 2020-08-14 | 亚星线缆集团有限公司 | Composite fireproof cable |
| CN110111940B (en) * | 2019-05-22 | 2020-08-25 | 江西美园电缆集团有限公司 | Fireproof composite cable |
| CN110718328B (en) * | 2019-10-21 | 2021-05-04 | 东莞市博利电业有限公司 | Fireproof hanging type cable |
-
2021
- 2021-07-19 CN CN202110816179.8A patent/CN113488259B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1086314B (en) * | 1954-02-01 | 1960-08-04 | Pirelli General Cable Works | Device for corrugating the sheath of an electrical cable |
| CN101933720A (en) * | 2010-08-23 | 2011-01-05 | 苏州升德精密电气有限公司 | Sliding rail return mechanism |
| CN110364299A (en) * | 2019-08-07 | 2019-10-22 | 夏纪成 | Composite fireproof cable |
| CN111354511A (en) * | 2020-04-16 | 2020-06-30 | 徐立平 | Safety cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113488259A (en) | 2021-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113488259B (en) | Underground cable | |
| CN111354511A (en) | Safety cable | |
| CN217280199U (en) | Special fire-fighting dual-flame-retardant power cable | |
| CN112018718B (en) | Shock attenuation cable joint for high tension cable | |
| CN109546416B (en) | Socket for electrical engineering construction | |
| CN206697257U (en) | Low smoke, zero halogen trailing elevator cable | |
| CN202906100U (en) | Rubber floating type connector seat | |
| CN108879557B (en) | Cable protection board of cable trench | |
| CN111724941B (en) | Fireproof cable for shaft | |
| CN107911968A (en) | A kind of machinery used electric control box | |
| CN209766714U (en) | Longitudinal sliding safety door | |
| CN113323000A (en) | Disaster prevention and reduction structure of near-fault pile group foundation | |
| CN220358738U (en) | Underground pipe gallery cable protection component | |
| CN116631687A (en) | Fire-resistant cable and cable cooling system | |
| CN217280116U (en) | Compression-resistant wear-resistant waterproof power cable | |
| CN108660944B (en) | Bridge rotation construction method | |
| CN206619424U (en) | One kind fire prevention thermal resistance cable | |
| CN109758690B (en) | Rail mounted heptafluoropropane fire extinguisher | |
| CN114696156B (en) | High-definition connecting wire for 4K computer screen projection | |
| CN218768834U (en) | Novel flame-retardant fire-resistant cable | |
| CN218161583U (en) | Flame-retardant power cable protection pipe | |
| CN211294713U (en) | High-safety flame-retardant wire and cable | |
| CN111724939B (en) | Fireproof and anti-shearing composite cable | |
| CN213752065U (en) | Cable with protection structure for power generation of nuclear power station | |
| CN217588485U (en) | Halogen-free low-smoke B1-level flame-retardant and fire-resistant 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 | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20211008 Assignee: Shenzhen jiatexin Lighting Co.,Ltd. Assignor: Zhong Liling Contract record no.: X2023980049659 Denomination of invention: A type of underground cable Granted publication date: 20220920 License type: Common License Record date: 20231204 |