Double-unit lead-in optical cable

Abstract

The invention belongs to the technical field of optical cables, and discloses a double-unit lead-in optical cable which is provided with a strong current transmission unit, a lead-in unit and an outer sheath. Each leading-in unit is composed of an optical fiber, two reinforcing pieces and a leading-in sheath, the cross section of each leading-in sheath is in a square bracket shape with an upward notch, the two leading-in units are buckled oppositely to form a rectangular-ambulatory-plane structure with the cross section in a rectangular-ambulatory-plane shape or a lengthened or shortened rectangular-ambulatory-plane shape, and the rectangular-ambulatory-plane structure is filled with the strong current transmission units. Or the concentric-square-shaped part is filled with the strong current transmission unit and the weak current transmission unit, and the weak current transmission unit is located at the bottom of the introduction sheath. All the strong current transmission units and the introduction units are spliced to form a cable core with a rectangular cross section, and the cable core is coated with the outer sheath. The optical cable has the main beneficial technical effects that strong / weak electric power and optical signals are accessed at the same time, the structure is more compact, the construction efficiency is higher, the space utilization rate is higher, and the anti-tearing performance of the introduced sheath is better.

Description

Technical Field

[0001] The invention belongs to the technical field of optical cables, and in particular relates to a double-unit introduction optical cable. Background Art

[0002] With the growing demand for broadband access, especially the high-fiber core density access demand in data centers / distribution centers, the demand for dual-unit optical cables and multiple power access to households continues to grow.

[0003] CN118131420A A dual-unit optical cable with at least three pairs of sub-cables, each pair of sub-cables is provided with a protective cover, the protective cover is composed of two sub-protective covers, the two sub-protective covers are composed of a first arc layer, a second arc layer and a connecting layer, the lower end of the first arc layer is connected to one end of the connecting layer, and an arc-shaped branch groove is formed between the connecting layer and the corresponding second arc layer; the other ends of the connecting layers of the two sub-protective covers are connected to each other, and an entry groove connected to both branch grooves is formed between the second arc layers of the two sub-protective covers; a skeleton component is also provided in the middle of all the sub-cables, and the skeleton component is inserted into the entry groove and branch groove of the corresponding protective cover. It is not convenient for simultaneous access of electricity.

[0004] CN214225518U A double-unit butterfly-shaped optical cable, having a protective shell, two butterfly-shaped optical units, the butterfly-shaped optical unit is composed of an optical fiber, a first reinforcement member and a second reinforcement member located on the upper and lower sides of the optical fiber, and a first butterfly-shaped sheath, the first butterfly-shaped sheath covers the optical fiber, the first reinforcement member, and the second reinforcement member, and the first butterfly-shaped sheath edges on the left and right sides of the optical fiber have first tearing openings; the characteristics are: the cross section of the butterfly-shaped optical unit is an ellipse; the protective shell is formed by the upper protection tube and the lower protection tube, the protective shell is an integrated structure, and the butterfly-shaped optical unit is located in the protective shell. It is only suitable for introducing one additional power line. Summary of the invention

[0005] To solve the above problems, the purpose of the present invention is to disclose a dual-unit introduction optical cable, which is achieved by adopting the following technical solutions.

[0006] A double-unit introduction optical cable has two identical high-power transmission units, two identical introduction units, and an outer sheath; the high-power transmission unit is composed of a high-power conductor and an insulating layer, the insulating layer is coated on the outside of the high-power conductor, and the cross-section of the insulating layer is rectangular; the characteristics are: the introduction unit is composed of an optical fiber, two reinforcement members, and an introduction sheath, the cross-section of the introduction sheath is in the shape of a bracket with a notch facing upward, the left part of the introduction sheath has a first reinforcement member, the right part of the introduction sheath has a second reinforcement member, the first reinforcement member and the second reinforcement member are both in a right-angled bend shape, and the first right-angled part of the first reinforcement member is located at the upper convex part on the left side The second right-angled portion of the first reinforcement member is located in the straight portion at the lower left, the first right-angled portion of the second reinforcement member is located in the convex portion on the right, the second right-angled portion of the second reinforcement member is located in the straight portion at the lower right, and the optical fiber is located in the center of the straight portion below the introduction sheath; the recesses of the two introduction units are spliced ​​together to align the sides of the introduction sheaths of the two introduction units, a high-power transmission unit is arranged inside each recess, and the high-power transmission unit inside each recess just fills the recess, and all the high-power transmission units and introduction units are spliced ​​together to form a cable core with a rectangular cross-section, and the outer sheath is coated on the outside of the cable core.

[0007] The double-unit introduction optical cable described above is characterized in that it also has four identical weak-current transmission units, which are composed of a weak-current conductor and an insulating sleeve. The insulating sleeve covers the weak-current conductor, and the cross-section of the insulating sleeve is rectangular. Two weak-current transmission units are arranged side by side at the bottom of the recess as a group, and the strong-current transmission unit is located above the weak-current transmission unit. Each recess has two weak-current transmission units and one strong-current transmission unit; each recess has two weak-current transmission units and one strong-current transmission unit that just fill the recess. All strong-current transmission units, weak-current transmission units, and introduction units are assembled to form a cable core with a rectangular cross-section, and the outer sheath covers the outside of the cable core.

[0008] The double-unit introduction optical cable described above is characterized in that: it has a total of four high-power transmission units and two high-power transmission backup units. The high-power transmission backup units are composed of a conductor and an insulating sheath. The insulating sheath covers the conductor. The notches of the two introduction units are opposite to each other. A high-power transmission unit is placed in each notch. The high-power transmission unit in each notch just fills the notch. Another two high-power transmission units are stacked between the two notches. The left and right sides of the two high-power transmission units in the middle are each provided with a high-power transmission backup unit. All high-power transmission units, high-power transmission backup units, and introduction units are pieced together to form a cable core with a rectangular cross-section, and the outer sheath covers the outside of the cable core.

[0009] The present application has the following major beneficial technical effects: simultaneous access of strong / weak power and optical signals, more compact structure, higher construction efficiency, higher space utilization, and better tear resistance of the introduced sheath. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the three-dimensional structure after dissection of Example 1.

[0011] Figure 2 for Figure 1 Schematic diagram of the enlarged cross-section structure.

[0012] Figure 3 This is a schematic diagram of the three-dimensional structure of a section after dissection after the outer sheath is removed in Example 2.

[0013] Figure 4 for Figure 3 Schematic diagram of the enlarged cross-section structure.

[0014] Figure 5 This is a schematic diagram of the three-dimensional structure of a section after dissection after the outer sheath is removed in Example 3.

[0015] Figure 6 for Figure 5 Schematic diagram of the enlarged cross-section structure. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand and implement this patent, the marks in the drawings are now described in detail in conjunction with the drawings in the specification.

[0017] In the figure: 1—high-voltage transmission unit, 2—introduction unit, 3—outer sheath, 4—low-voltage transmission unit, 5—high-voltage transmission backup unit, 11—high-voltage conductor, 12—insulation layer, 21—optical fiber, 22—reinforcement member, 23—introduction sheath, 41—low-voltage conductor, 42—insulation sheath, 51—conductor, 52—insulation sheath.

[0018] Implementation Example 1: Please see Figure 1 and Figure 2A double-unit optical cable introduction cable comprises two identical high-power transmission units 1, two identical introduction units 2, and an outer sheath 3; the high-power transmission unit 1 is composed of a high-power conductor 11 and an insulating layer 12, the insulating layer 12 is coated on the outside of the high-power conductor 11, and the cross section of the insulating layer 12 is rectangular; it is characterized in that: the introduction unit 2 is composed of an optical fiber 21, two reinforcement members 22, and an introduction sheath 23, the cross section of the introduction sheath 23 is in the shape of a bracket with a notch upward, the left part of the introduction sheath 23 has a first reinforcement member 22, the right part of the introduction sheath 23 has a second reinforcement member 22, the first reinforcement member and the second reinforcement member are both in a right-angle bending shape, and the first reinforcement member is in a right-angle bending shape. The first right-angled portion of a reinforcement member is located in the convex portion on the left, the second right-angled portion of the first reinforcement member is located in the straight portion at the lower left, the first right-angled portion of the second reinforcement member is located in the convex portion on the right, the second right-angled portion of the second reinforcement member is located in the straight portion at the lower right, and the optical fiber 21 is located in the center of the straight portion below the introduction sheath 23; the recesses of the two introduction units 2 are spliced ​​together to align the side surfaces of the introduction sheaths 23 of the two introduction units 2, and a high-power transmission unit 1 is arranged inside each recess. After all the high-power transmission units 1 and introduction units 2 are spliced ​​together, a cable core with a rectangular cross-section is formed, and the outer sheath 3 is covered on the outside of the cable core.

[0019] One high-power transmission unit 1 just fills one recess.

[0020] The strong power transmission unit 1 is used to transmit 220V or 380V alternating current, and the introduction unit 2 is used to transmit optical signals.

[0021] Implementation Example 2: Please see Figure 3 and Figure 4 , and refer to Figure 1 to Figure 2 A double-unit introduction optical cable is basically the same as implementation example 1, except that: it also has four identical weak-current transmission units 4, the weak-current transmission unit 4 is composed of a weak-current conductor 41 and an insulating sleeve 42, the insulating sleeve 42 covers the weak-current conductor 41, the cross-section of the insulating sleeve 42 is rectangular, two weak-current transmission units 4 are arranged side by side at the bottom of the recess as a group, and the strong-current transmission unit 1 is located above the weak-current transmission unit 4, and each recess has two weak-current transmission units 4 and one strong-current transmission unit 1; all the strong-current transmission units 1, the weak-current transmission units 4, and the introduction units 2 are assembled to form a cable core with a rectangular cross-section, and the outer sheath 3 covers the outside of the cable core.

[0022] Two weak current transmission units 4 and one strong current transmission unit 1 just fill up one recess.

[0023] The strong current transmission unit 1 is used to transmit 220V or 380V alternating current, the introduction unit 2 is used to transmit optical signals, and the weak current transmission unit 4 is used to transmit weak current signals, such as telephone signals or control signals.

[0024] In each of the above-mentioned embodiments 1 and 2, the extended parts of the brackets of the two introduction units 2 are in contact with each other after being assembled.

[0025] Implementation Example 3: Please see Figure 5 and Figure 6 , and refer to Figures 1 to 4 A double-unit introduction optical cable is basically the same as implementation example 1, except that: it has four strong power transmission units 1 and two strong power transmission backup units 5, the strong power transmission backup unit 5 is composed of a conductor 51 and an insulating sheath 52, the insulating sheath 52 covers the conductor 51, the two introduction units 2 have notches facing each other, a strong power transmission unit 1 is placed in each notch, the strong power transmission unit 1 in the notch just fills the notch, and another two strong power transmission units 1 are stacked between the two notches, and the left and right sides of the two strong power transmission units 1 in the middle are each provided with a strong power transmission backup unit 5, all the strong power transmission units 1, the strong power transmission backup units 5, and the introduction units 2 are assembled to form a cable core with a rectangular cross-section, and the outer sheath 3 is covered on the outside of the cable core.

[0026] The high-voltage transmission unit 1 is used to transmit 220V or 380V AC power, the introduction unit 2 is used to transmit optical signals, and the high-voltage transmission backup unit 5 is used to transmit 220V or 380V AC power or be used as a ground wire; the four high-voltage transmission units 1 can be used as two single-phase lines or as three-phase four-wire transmission.

[0027] The dual-unit optical cable introduced in the present application is characterized in that the materials of the strong current conductor 11, the weak current conductor 41, and the electrical conductor 51 are all copper, aluminum, copper alloy, or aluminum alloy.

[0028] The dual-unit lead-in optical cable described in the present application is characterized in that the materials of the insulating layer 12, the lead-in sheath 23, the insulating sleeve 42, and the insulating sheath 52 are all plastics, preferably plastics with flame retardant or fireproof functions.

[0029] The dual-unit optical cable introduced in the present application is characterized in that the type of the optical fiber 21 is preferably G.657 or A1a or A1b.

[0030] The double-unit optical cable introduced in the present application is characterized in that the material of the reinforcement member 22 is steel wire, aluminum wire, iron wire, copper wire, copper alloy wire, aluminum alloy wire, glass fiber reinforced plastic, aramid yarn, polyester yarn or glass fiber yarn.

[0031] In the present application, in implementation example 1, the notches of the introduction units 2 are relatively aligned and buckled to form a cable core with a rectangular cross-section, and each high-voltage transmission unit 1 inside just fills its own notch, making full use of the space; in implementation example 2, the notches of the introduction units 2 are relatively aligned and buckled to form a cable core with a rectangular cross-section, and one high-voltage transmission unit 1 and two low-voltage transmission units 4 inside just fill their own notches, making full use of the space; in implementation example 3, by adding a high-voltage transmission backup unit 5 and two high-voltage transmission units 1, the cross-section of the cable core is just rectangular, making full use of the space.

[0032] In the present application, the introduction sheath 23 of the introduction unit 2 is in the shape of a square bracket, which saves the material consumption of the introduction sheath 23 and at the same time, makes its length and width meet the requirements of the rectangular space of the optical fiber connector in the prior art. The optical fiber connector effectively clamps the introduction unit 2 and at the same time realizes the simultaneous access of strong power and weak power signals, reducing construction costs; on the other hand, the right-angle bent reinforcement effectively protects the bent part of the introduction sheath 23, plays a reinforcing role, and is not easy to be torn.

[0033] In this application, multiple power sources can be introduced simultaneously.

[0034] In this application, the creative part is: 1. Introduce the bracket structure of unit 2 and form a notch.

[0035] 2. The right-angled shape of the reinforcing member introduced into the unit 2 is bent at a right angle along the introduction sheath 23, with one right-angled side located at the protruding part and the other right-angled side located at the horizontal part; and the optical fiber 2 is located in the center of the horizontal part, and the optical fiber 2 does not contact the reinforcing member, so that the lateral pressure resistance is stronger, and similarly, the pressure resistance on the upper and lower sides is also enhanced.

[0036] 3. The high-voltage transmission unit 1 just fills the notch, so the two introduction units 2 just fit together to form a rectangular cross-sectional structure; this fully utilizes space resources without any waste; and also makes the consumption of various materials more economical.

[0037] 4. The weak current transmission unit 4 and the strong current transmission unit 1 just fill the notch, and also solve the problem of access and transmission of weak current signals.

[0038] 5. The preferred method in the present application is that the cross section of the outer edge of the outer sheath 3 is also rectangular, which can save space and materials to the greatest extent.

[0039] In this application, you can also: One way is that two introduction units 2 are buckled together to form a U-shaped structure with a cross-section or an elongated or shortened U-shaped structure, and the U-shaped structure is filled with strong current transmission units 1, or the U-shaped structure is filled with strong current transmission units 1 and weak current transmission units 4, and the weak current transmission unit 4 is located at the bottom of the introduction sheath 23.

[0040] Another way is that two introduction units 2 are buckled to form a U-shaped structure with an elongated or shortened U-shaped cross section, and then pulled apart for a distance up and down, a high-power transmission unit 1 is filled in each recess and the recess is filled, another two high-power transmission units 1 are neatly stacked between the two recesses, and a high-power transmission spare unit 5 is placed on both sides of the two middle high-power transmission units 1 to form a cable core, and the cross section of the cable core is rectangular.

[0041] In the implementation example 1 of the present application, the high-power transmission unit 1 can also be a relatively long structure, that is, the height in the cross section is greater than the length. In this way, the two introduction units 2 are buckled to form a U-shaped structure with a cross section or an elongated or shortened U-shaped structure, and the U-shaped structure is filled with high-power transmission units 1. At this time, the two high-power transmission units 1 are arranged side by side on the left and right, and half of each high-power transmission unit 1 is in the recess of an introduction unit 2.

[0042] In the present application, the introduction unit 2 is used to clamp and tighten the high-voltage transmission unit 1 located in the recess.

[0043] The present application has the following major beneficial technical effects: simultaneous access of strong / weak power and optical signals, more compact structure, higher construction efficiency, higher space utilization, and better tear resistance of the introduced sheath.

[0044] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A double-unit optical cable, comprising two identical high-power transmission units (1), two identical introduction units (2), and an outer sheath (3); the high-power transmission unit (1) is composed of a high-power conductor (11) and an insulating layer (12), the insulating layer (12) is coated on the outside of the high-power conductor (11), and the cross section of the insulating layer (12) is rectangular; the characteristics are: The introduction unit (2) is composed of an optical fiber (21), two reinforcement members (22), and an introduction sheath (23). The cross section of the introduction sheath (23) is in the shape of a bracket with a notch facing upward. The left side of the introduction sheath (23) has a first reinforcement member (22), and the right side of the introduction sheath (23) has a second reinforcement member (22). The first reinforcement member and the second reinforcement member are both in a right-angled shape. The first right-angled portion of the first reinforcement member is located in the upper convex portion on the left side, the second right-angled portion of the first reinforcement member is located in the straight portion at the lower left, and the first right-angled portion of the second reinforcement member is located in the lower right straight portion. The second right-angled portion of the second reinforcement member is located in the upper convex portion on the right side, and the optical fiber (21) is located in the center of the straight portion below the introduction sheath (23); the notches of the two introduction units (2) are spliced ​​together to align the side surfaces of the introduction sheaths (23) of the two introduction units (2); a high-power transmission unit (1) is arranged inside each notch, and the high-power transmission unit (1) inside each notch just fills the notch; all the high-power transmission units (1) and introduction units (2) are spliced ​​together to form a cable core with a rectangular cross section, and the outer sheath (3) is wrapped around the cable core.

2. A dual-unit drop optical cable according to claim 1, characterized in that: The invention also comprises four identical weak current transmission units (4), wherein the weak current transmission units (4) are composed of a weak current conductor (41) and an insulating sleeve (42), wherein the insulating sleeve (42) covers the weak current conductor (41), and the cross section of the insulating sleeve (42) is rectangular. Two weak current transmission units (4) are arranged side by side at the bottom of the recess as a group, and the strong current transmission unit (1) is located above the weak current transmission unit (4). Each recess comprises two weak current transmission units (4) and one strong current transmission unit (1); the two weak current transmission units (4) and one strong current transmission unit (1) in each recess just fill the recess. After all the strong current transmission units (1), the weak current transmission units (4) and the introduction unit (2) are assembled, a cable core with a rectangular cross section is formed, and the outer sheath (3) covers the outside of the cable core.

3. A dual-unit optical fiber introduction cable according to claim 1 or claim 2, characterized in that: After the two introduction units (2) are joined together, the protruding parts of the brackets are in contact with each other.

4. A dual-unit drop optical cable according to claim 1, characterized in that: A total of four high-power transmission units (1) are provided, and two high-power transmission backup units (5) are also provided. The high-power transmission backup unit (5) is composed of a conductor (51) and an insulating sheath (52). The insulating sheath (52) covers the conductor (51). The notches of the two introduction units (2) are opposite to each other. A high-power transmission unit (1) is placed in each notch. The high-power transmission unit (1) in each notch just fills the notch. Another two high-power transmission units (1) are stacked between the two notches. A high-power transmission backup unit (5) is provided on the left and right sides of the two high-power transmission units (1) in the middle. All the high-power transmission units (1), the high-power transmission backup units (5) and the introduction units (2) are assembled to form a cable core with a rectangular cross section. The outer sheath (3) covers the outside of the cable core.

5. A dual-unit optical fiber introduction cable according to claim 1 or claim 2 or claim 4, characterized in that: The material of the strong electric conductor (11) is copper or aluminum or copper alloy or aluminum alloy.

6. A dual-unit drop optical cable according to claim 2, characterized in that: The materials of the weak current conductor (41) are copper, aluminum, copper alloy or aluminum alloy.

7. A dual-unit drop optical cable according to claim 4, characterized in that: The material of the conductor (51) is copper, aluminum, copper alloy or aluminum alloy.

8. A dual-unit optical fiber drop cable according to claim 1 or claim 2 or claim 4, characterized in that: The materials of the insulating layer (12) and the introduction sheath (23) are both plastic.

9. A dual-unit optical fiber drop cable according to claim 1 or claim 2 or claim 4, characterized in that: The type of the optical fiber (21) is G.657 or A1a or A1b.

10. A dual-unit optical fiber introduction cable according to claim 1 or claim 2 or claim 4, characterized in that: The material of the reinforcing member (22) is steel wire, aluminum wire, iron wire, copper wire, copper alloy wire, aluminum alloy wire, glass fiber reinforced plastic, aramid yarn, polyester yarn or glass fiber yarn.

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