CN113707378B - Environment-friendly high-precision long-distance transmission physical foaming polyolefin insulation instrument cable - Google Patents
Environment-friendly high-precision long-distance transmission physical foaming polyolefin insulation instrument cable Download PDFInfo
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- CN113707378B CN113707378B CN202111075362.3A CN202111075362A CN113707378B CN 113707378 B CN113707378 B CN 113707378B CN 202111075362 A CN202111075362 A CN 202111075362A CN 113707378 B CN113707378 B CN 113707378B
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- cable
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- protection
- heat
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- 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
- H01B7/1805—Protections not provided for in groups H01B7/182 - H01B7/26
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
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- 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
- H01B7/1875—Multi-layer sheaths
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- 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
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
- H01B7/423—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation using a cooling fluid
- H01B7/425—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation using a cooling fluid the construction being bendable
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- 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
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/428—Heat conduction
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Insulated Conductors (AREA)
- Cable Accessories (AREA)
Abstract
The application discloses an environment-friendly high-precision remote transmission physical foaming polyolefin insulation instrument cable, which comprises cable main bodies distributed in a circumferential array, wherein a protection component is arranged among a plurality of cable main bodies, and the protection component comprises a protection bag arranged at the axle center of the cable main bodies; a heat conducting fin mounted on the heat conducting tube and extending to the external port of the protective bag; and the heat dissipation net is attached to the outer side of the heat conducting fin, and a protection sleeve is further arranged outside the cable main body and the protection assembly. The environment-friendly high-precision remote transmission physical foaming polyolefin is connected to the radiating net through the insulated instrument cable, so that the radiating net is provided with a reverse acting force to the pressed side through the heat conducting fins in the deformation process of the radiating net, so that the pressed acting force is counteracted, meanwhile, the elastic supporting piece is pressed by the acting force to extrude the cooling liquid in the protective bag to soak the radiating net, and the soaked radiating net is extruded back into the protective bag by the action force of recovery deformation, so that heat circulation is completed.
Description
Technical Field
The application relates to the technical field of cables, in particular to an environment-friendly high-precision long-distance transmission physical foaming polyolefin insulation instrument cable.
Background
The instrument cable is generally used for providing electric energy for electric equipment such as measuring instruments and monitoring instruments installed in the field, has good stability when long-distance transmission of the instrument cable is guaranteed, the skin foam skin physical foaming polyolefin is used as insulation of the instrument cable, long-distance signal transmission can be achieved, but in the practical use process, the instrument cable erected on the electric wire tower is found to be bent under the action of gravity, when the instrument cable swings along with strong wind in the weather of strong wind, the instrument cable is enabled to mutually extrude and rub to generate a large amount of heat in the swinging process, and the instrument cable is enabled to be subjected to larger extrusion force when being swung or laid on the ground and subjected to the compression force of a vehicle, so that the instrument cable is easy to damage, and the long-distance signal transmission effect of the instrument cable is affected.
Disclosure of Invention
The application aims to provide an environment-friendly high-precision long-distance transmission physical foaming polyolefin insulated instrument cable, which is used for providing an anti-bending protection effect for the instrument cable, providing a reverse acting force to offset the pressing acting force when the instrument cable is pressed, simultaneously enabling cooling liquid in the instrument cable to realize thermal circulation and improving the heat dissipation effect.
In order to achieve the above purpose, the present application provides the following technical solutions: the environment-friendly high-precision remote transmission physical foaming polyolefin insulated instrument cable comprises cable main bodies distributed in a circumferential array, wherein a protection component is further arranged among a plurality of the cable main bodies, and the protection component comprises protection bags arranged at the axle centers of a plurality of the cable main bodies; the heat conducting pieces are arranged in the protective bag in a circumferential array; one end of the heat conducting pipe is arranged on the heat conducting piece, and the other end of the heat conducting pipe extends to the outside of the protective bag; a heat conduction sheet mounted to the heat conduction pipe and extending to the external port of the protective bag; the heat dissipation net is attached to the outer side of the heat conducting fin, a protection sleeve is further arranged outside the cable main body and the protection assembly, and the protection sleeve comprises an elastic supporting piece filled outside the cable main body and the protection assembly; the inner sheath, the inner elastic layer, the inner connecting layer, the mounting layer, the outer connecting layer, the outer elastic layer and the outer sheath are sequentially arranged on the outer side of the elastic supporting piece.
Preferably, the cable main body comprises a cable core, a cable insulating layer made of a skin-foam physical foaming polyolefin material is arranged outside the cable core, the cable core and the cable insulating layer form a single-strand cable, eight single-strand cables are twisted into four groups of double-strand cables in pairs, the four groups of double-strand cables are distributed in a circumferential array, and an anti-pulling rope is arranged at the axis.
Preferably, the cable insulation layer and the outside of the tensile rope are filled with a filling layer, a shielding layer is arranged outside the filling layer, and a cable sheath is arranged outside the shielding layer.
Preferably, the protection capsule is of a cylindrical hollow structure and is distributed in a linear array along the axial direction of the cable, and cooling liquid is arranged inside the protection capsule.
Preferably, the heat conducting piece is a semi-elliptic hemispherical hollow structure, a plurality of through holes are formed in the surface of the heat conducting piece, one end of the heat conducting pipe is connected to the semi-elliptic vertex position of the heat conducting piece and communicated with the inner cavity of the heat conducting piece, and a plurality of hemispherical parts of the heat conducting piece are in fit connection.
Preferably, the other end of the heat conduction pipe penetrates through the elastic supporting piece, the inner sheath and the inner elastic layer and extends into an arc-shaped groove formed in the outer side of the inner connecting layer.
Preferably, the heat conducting fin is of an arc structure and is arranged in an arc groove at the outer side of the inner connecting layer, the heat conducting fin is connected with a port at the other end of the heat conducting tube, which is positioned in the arc groove of the inner connecting layer, and a connecting hole communicated with the heat conducting tube is formed in the surface of the heat conducting fin.
Preferably, the heat dissipation net is of an annular structure and is distributed in the mounting layer along the axial linear array of the cable, the inner side of the heat dissipation net is in fit connection with the inner side of the inner connecting layer and the outer side of the heat conducting fin, and the outer side of the heat dissipation net is in fit connection with the inner side of the outer connecting layer.
Preferably, the inner elastic layer is made of elastic rubber material, and the inner elastic layer is assembled to enable the inner elastic layer to be closely attached to the heat dissipation net arranged in the mounting layer.
Preferably, the outer elastic layer is made of elastic rubber material, and the outer elastic layer is assembled to enable the outer connecting layer to be closely attached to the heat dissipation net arranged in the mounting layer.
In the technical scheme, the application has the beneficial effects that:
1. the environment-friendly high-precision remote transmission physical foaming polyolefin transmits acting force to other heat conducting pieces through an insulating instrument cable, and the heat conducting pieces connected with the heat conducting pipes on the heat conducting pieces transmit the acting force to a heat dissipation net, so that the heat dissipation net uniformly absorbs the acting force, and a reverse acting force is provided for a pressure receiving side through the heat conducting pieces in the deformation process of the heat dissipation net so as to offset the pressure receiving acting force.
2. The environment-friendly high-precision remote transmission physical foaming polyolefin is extruded into the protective bag by the elastic support piece through the insulated instrument cable, the cooling liquid in the protective bag is extruded by the elastic support piece to soak the heat dissipation net, and after the acting force borne by the elastic support piece is withdrawn, the soaked heat dissipation net is extruded into the protective bag by the acting force of restoring deformation, so that heat circulation is completed.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic elevational cross-sectional view of the present application;
FIG. 2 is a schematic side cross-sectional view of the present application;
FIG. 3 is a schematic elevational cross-sectional view of the cable body of the present application;
FIG. 4 is a schematic view of a partial front cross-sectional structure of the protective assembly of the present application;
fig. 5 is an enlarged schematic view of the structure of the point a in fig. 1 according to the present application.
In the figure: 1. a cable body; 11. a cable core; 12. a cable insulation layer; 13. an anti-pull rope; 14. a filling layer; 15. a shielding layer; 16. a cable sheath; 2. a protection component; 21. a protective bag; 22. a heat conductive member; 23. a heat conduction pipe; 24. a heat conductive sheet; 25. a heat dissipation net; 3. a protective sleeve; 30. an elastic support; 31. an inner sheath; 32. an inner elastic layer; 33. an inner connection layer; 34. an installation layer; 35. an outer connection layer; 36. an outer elastic layer; 37. an outer sheath.
Detailed Description
In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings.
Referring to fig. 1 and 3, the present application provides a technical solution: the utility model provides an environment-friendly high-accuracy long-range transmission physical foaming polyolefin insulated instrument cable, including being the cable main part 1 that the circumference array distributes, cable main part 1 includes cable core 11, cable core 11 outside is provided with the cable insulation layer 12 that adopts skin foam skin physical foaming polyolefin material to make, cable core 11 and cable insulation layer 12 constitute single strand cable, single strand cable is provided with eight altogether, and two pairs of four sets of double strand cables, four sets of double strand cables are circumference array distribution, and axle center department is provided with anti-pulling rope 13, cable insulation layer 12 and the outside packing of tensile rope 13 have filling layer 14, the outside of filling layer 14 is provided with shielding layer 15, shielding layer 15 outside is provided with cable sheath 16, the cable insulation layer 12 that above-mentioned structural design can be made by skin foam skin physical foaming polyolefin material provides good insulating effect for cable core 11, and cable core 11 and cable insulation layer 12 constitute single strand cable and two pairs of double strand cables, and set up four sets of double strand cables axle center department of circumference array distributes, can provide good stretch resistance for cable main part 1, make its cable layer 14 can further be closely to the shielding layer of shielding layer 16, can prevent that the signal from interfering with each other, the cable layer can be closely packed with shielding layer 16, can prevent that the signal from interfering with each other.
As shown in fig. 1, 2, 4 and 5, a protection component 2 is further arranged between the plurality of cable main bodies 1, the protection component 2 comprises a protection bag 21 arranged at the axle center of the plurality of cable main bodies 1, the protection bag 21 is of a cylindrical hollow structure and is distributed in a linear array along the axial direction of the cable, and cooling liquid is arranged inside the protection bag 21, and the structural design is convenient for the cooling liquid inside the protection bag 21 to absorb heat emitted by the cable main bodies 1; the heat conducting pieces 22 are arranged in the protective bag 21 in a circumferential array, the heat conducting pieces 22 are of a semi-elliptical hemispherical hollow structure, a plurality of through holes are formed in the surface of the heat conducting pieces 22, one end of each heat conducting pipe 23 is connected to the semi-elliptical vertex position of each heat conducting piece 22 and communicated with the inner cavity of each heat conducting piece 22, and the hemispherical parts of the heat conducting pieces 22 are all in fit connection; one end of the heat conduction pipe 23 is arranged on the heat conduction piece 22, the other end of the heat conduction pipe 23 extends to the outside of the protective bag 21, and the other end of the heat conduction pipe 23 penetrates through the elastic support piece 30, the inner sheath 31 and the inner elastic layer 32 and extends into an arc-shaped groove formed on the outer side of the inner connecting layer 33; the heat conducting fin 24 is arranged on the heat conducting pipe 23 and extends to the external port of the protective bag 21, the heat conducting fin 24 is of an arc-shaped structure and is arranged in an arc-shaped groove on the outer side of the inner connecting layer 33, the heat conducting fin 24 is connected with the port, positioned in the arc-shaped groove, of the inner connecting layer 33, of the other end of the heat conducting pipe 23, a connecting hole communicated with the heat conducting pipe 23 is formed in the surface of the heat conducting fin 24, and the structural design is convenient for the heat conducting piece 22 to absorb part of temperature of cooling liquid and then conduct the cooling liquid to the heat conducting fin 24 through the heat conducting pipe 23; the heat dissipation net 25 attached to the outside of the heat conduction sheet 24, the heat dissipation net 25 is of an annular structure and is linearly arranged in the installation layer 34 along the axial direction of the cable, the inside of the heat dissipation net 25 is attached to the inside of the inner connection layer 33 and the outside of the heat conduction sheet 24, the outside of the heat dissipation net 25 is attached to the inside of the outer connection layer 35, the above structural design facilitates the heat dissipation net 25 to absorb and dissipate the temperature on the heat conduction sheet 24, simultaneously, when the cable main body 1, the protection assembly 2 and the protection sleeve 3 are rocked by wind force, the cooling liquid in the protection bag 21 is extruded into the inner cavity of the heat conduction member 22 through the through hole of the heat conduction member 22 by the extrusion force generated when the elastic support member 30 is bent, then enters the heat conduction tube 23, enters the cavity for installing the heat dissipation net 25 in the installation layer 34 through the connecting hole of the heat conduction sheet 24 connected to the other end of the heat conduction tube 23, and the cavity of the installation layer 34 is spread by the hydraulic force of the cooling liquid, at this time, the cooling liquid can fill the cavity of the mounting layer 34 and fully soak the heat dissipation net 25, the heat of the cooling liquid is absorbed by the heat dissipation net 25, the cooling liquid is cooled, meanwhile, in the process that the protection sleeve 3 is subjected to shaking force or external vehicle equal-pressure force, the elastic supporting piece 30 extrudes the cooling liquid in the protection bag 21 to the heat dissipation net 25, the heat conducting piece 22 at the compression side synchronously applies extrusion force to other heat conducting pieces 22, the heat conducting pieces 22 move outwards, the protection sleeve 3 is deformed by the heat conducting pieces 24 connected with the heat conducting pipes 23 on the heat conducting pieces 22, and force is applied to the opposite direction of the compression force, so that part of the shaking force caused by the wind force acts on the cable main body 1, the protection assembly 2 and the protection sleeve 3 is counteracted, and the heat conducting pieces 24 conduct the force to the heat dissipation net 25, the heat dissipation net 25 absorbs the acting force to enhance the bending resistance of the cable main body 1, the protection assembly 2 and the protection sleeve 3, when the cable main body 1, the protection assembly 2 and the protection sleeve 3 shake to the extreme point and shake reversely, the plurality of heat conducting pieces 22 move to the original position under the acting force of the recovery deformation of the protection sleeve 3, at this time, the inner elastic layer 32 between the inner sheath 31 and the inner connecting layer 33 and the outer elastic layer 36 between the outer connecting layer 35 and the outer sheath 37 can apply an elastic acting force to the mounting layer 34, and the cooling liquid in the cavity of the mounting layer 34 is extruded into the heat conducting pipe 23 through the connecting hole of the heat conducting sheet 24, then enters the inner cavity of the heat conducting piece 22 and reenters the protection bag 21 through the through hole of the heat conducting piece 22, so as to complete the heat dissipation cycle of the cooling liquid.
As further shown in fig. 2 and 5, the cable body 1 and the protection assembly 2 are further provided with a protection sleeve 3 outside, and the protection sleeve 3 includes an elastic support 30 filled outside the cable body 1 and the protection assembly 2; the inner sheath 31, the inner elastic layer 32, the inner connecting layer 33, the mounting layer 34, the outer connecting layer 35, the outer elastic layer 36 and the outer sheath 37 which are sequentially arranged outside the elastic support 30, wherein the inner elastic layer 32 is made of elastic rubber material, the inner elastic layer 32 is assembled to enable the inner connecting layer 33 to be tightly attached to the heat dissipation net 25 arranged in the mounting layer 34, the outer elastic layer 36 is made of elastic rubber material, the outer elastic layer 36 is assembled to enable the outer connecting layer 35 to be tightly attached to the heat dissipation net 25 arranged in the mounting layer 34, the above-mentioned structural design is convenient for the elastic support 30 to provide a positioning effect for the cable main body 1 and the protection component 2, the inner sheath 31 provides protection for the elastic support 30 and the inner elastic layer 32, and the inner connecting layer 33 is tightly attached to the inner side of the mounting layer 34 under the elastic force of the inner elastic layer 32, meanwhile the outer sheath 37 provides protection for the outer elastic layer 36, and the outer connecting layer 35 is tightly attached to the outer side of the mounting layer 34 under the elastic force of the outer elastic layer 36, so that the elastic force of the inner elastic layer 32 and the outer elastic layer 36 can tightly attach the outer connecting layer 35 to the heat dissipation net 25 through the inner connecting layer 33 and the outer connecting layer 35 to the inner elastic layer 34 to permanently press the cooling liquid 21 to the cavity of the cooling bag 21.
While certain exemplary embodiments of the present application have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the application, which is defined by the appended claims.
Claims (6)
1. An environment-friendly high-precision remote transmission physical foaming polyolefin insulation instrument cable is characterized in that: comprises cable main bodies (1) distributed in a circumferential array, a plurality of protection components (2) are arranged among the cable main bodies (1),
the protection component (2) comprises protection bags (21) arranged at the axle centers of the cable main bodies (1);
a heat conducting member (22) arranged in a circumferential array inside the protective bag (21);
a heat conduction pipe (23) with one end mounted on the heat conduction member (22) and the other end extending to the outside of the protection bag (21);
a heat conductive sheet (24) attached to the heat conductive pipe (23) and extending to the external port of the protective bag (21);
a heat dissipation net (25) attached and connected to the outer side of the heat conducting fin (24),
the cable main body (1) and the outside of the protection component (2) are also provided with a protection sleeve member (3),
the protection kit (3) comprises an elastic support (30) filled outside the cable body (1) and the protection assembly (2);
an inner sheath (31), an inner elastic layer (32), an inner connecting layer (33), a mounting layer (34), an outer connecting layer (35), an outer elastic layer (36) and an outer sheath (37) which are sequentially arranged on the outer side of the elastic support piece (30);
the protection bags (21) are of cylindrical hollow structures and are distributed in a linear array along the axial direction of the cable, and cooling liquid is arranged inside the protection bags (21);
the heat conducting piece (22) is of a semi-elliptical hemispherical hollow structure, a plurality of through holes are formed in the surface of the heat conducting piece, one end of the heat conducting pipe (23) is connected to the semi-elliptical vertex position of the heat conducting piece (22) and is communicated with the inner cavity of the heat conducting piece (22), and the hemispherical parts of the heat conducting piece (22) are in fit connection;
the heat conducting fin (24) is of an arc-shaped structure and is arranged in an arc-shaped groove at the outer side of the inner connecting layer (33), the heat conducting fin (24) is connected with a port at the other end of the heat conducting tube (23) and positioned in the arc-shaped groove of the inner connecting layer (33), and a connecting hole communicated with the heat conducting tube (23) is formed in the surface of the heat conducting fin;
the heat dissipation net (25) is of an annular structure and is distributed in the installation layer (34) along the axial linear array of the cable, the inner side of the heat dissipation net (25) is attached and connected to the outer sides of the inner connecting layer (33) and the heat conducting fins (24), and the outer side of the heat dissipation net (25) is attached and connected to the inner side of the outer connecting layer (35).
2. The environment-friendly high-precision remote transmission physical foaming polyolefin insulated instrument cable is characterized in that: the cable main body (1) comprises a cable core (11), a cable insulating layer (12) made of a skin foam physical foaming polyolefin material is arranged outside the cable core (11), the cable core (11) and the cable insulating layer (12) form a single-strand cable, eight single-strand cables are arranged in total, two pairs of the single-strand cables are twisted into four groups of double-strand cables, the four groups of double-strand cables are distributed in a circumferential array, and an anti-pulling rope (13) is arranged at the axis.
3. The environment-friendly high-precision remote transmission physical foaming polyolefin insulated instrument cable is characterized in that: the cable insulation layer (12) and the tensile rope (13) are externally filled with a filling layer (14), a shielding layer (15) is arranged outside the filling layer (14), and a cable sheath (16) is arranged outside the shielding layer (15).
4. The environment-friendly high-precision remote transmission physical foaming polyolefin insulated instrument cable is characterized in that: the other end of the heat conduction pipe (23) penetrates through the elastic supporting piece (30), the inner sheath (31) and the inner elastic layer (32) and extends into an arc-shaped groove formed in the outer side of the inner connecting layer (33).
5. The environment-friendly high-precision remote transmission physical foaming polyolefin insulated instrument cable is characterized in that: the inner elastic layer (32) is made of elastic rubber material, and the inner elastic layer (32) is assembled to enable the inner connecting layer (33) to be closely attached to the heat dissipation net (25) arranged in the mounting layer (34).
6. The environment-friendly high-precision remote transmission physical foaming polyolefin insulated instrument cable is characterized in that: the outer elastic layer (36) is made of elastic rubber materials, and the outer elastic layer (36) is assembled to enable the outer connecting layer (35) to be closely attached to the heat dissipation net (25) arranged in the mounting layer (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111075362.3A CN113707378B (en) | 2021-09-14 | 2021-09-14 | Environment-friendly high-precision long-distance transmission physical foaming polyolefin insulation instrument cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111075362.3A CN113707378B (en) | 2021-09-14 | 2021-09-14 | Environment-friendly high-precision long-distance transmission physical foaming polyolefin insulation instrument cable |
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| CN113707378A CN113707378A (en) | 2021-11-26 |
| CN113707378B true CN113707378B (en) | 2023-09-26 |
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| CN202111075362.3A Active CN113707378B (en) | 2021-09-14 | 2021-09-14 | Environment-friendly high-precision long-distance transmission physical foaming polyolefin insulation instrument cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115762894B (en) * | 2023-01-06 | 2023-03-31 | 京缆电缆有限公司 | Safe type 110kV high tension cable convenient to connect |
| CN117275824B (en) * | 2023-10-30 | 2024-05-31 | 人民电缆集团有限公司 | High-performance fireproof cable with insulating corrugated copper sheath and composite mica tape for high-speed rail |
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| CN209822326U (en) * | 2019-04-29 | 2019-12-20 | 久盛电气股份有限公司 | High-temperature-resistant double-shielded cable for nuclear |
| US10825582B1 (en) * | 2019-05-20 | 2020-11-03 | Sumitomo Electric Industries, Ltd. | Cable connecting structure, member for cable connecting structure, and method of manufacturing cable connecting structure |
| CN211479736U (en) * | 2019-06-19 | 2020-09-11 | 沈阳电力线缆有限公司 | High fire-resistant cable |
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| CN113707378A (en) | 2021-11-26 |
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