A zigzag optical and electrical blowing cable

Abstract

The present invention relates to a zigzag optical electric blown cable, comprising an optical fiber unit, which is placed at the center of the optical cable. The optical fiber unit comprises an optical fiber, fiber paste, an inner layer of a casing and an outer layer of the casing. A plurality of optical fibers are provided, and the plurality of optical fibers are evenly distributed in the inner layer of the casing. Fiber paste is filled between adjacent optical fibers, and the inner layer of the casing is fully filled with the fiber paste. The outer layer of the casing is wrapped with the outer layer of the casing, and the inner layer of the casing is tightly fitted with the outer layer of the casing. The outer layer of the casing is wrapped with an outer sheath layer, and the outer sheath layer is a high-density polyethylene material layer. The outer sheath layer has a zigzag structure, and copper wire is wrapped in the zigzags. The outer sheath layer consists of four areas, which are distributed in a circle and are all in the shape of a "mountain". The size and shape of each "mountain"-shaped area are equal. The present invention does not increase the size of the optical cable while providing more functions, and has high applicability to equipment and strong extensibility. The contact area between the zigzag outer sheath and the surrounding area is small, the friction resistance is small, and the stress points are concentrated.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber cables, in particular to a zigzag optical fiber blown cable. Background Art

[0002] Currently, with the promotion and development of 5G technology, massive amounts of industrial and industrial data are being mined, increasing the demand for large-core-count optical cables. However, as the cost of building new optical cable ducts and the difficulty of new construction projects increase year by year, the air-blown micro-optical cable laying method, which utilizes existing optical cable communication ducts, is very common. The trend of optical cables moving from small to large core counts is already in progress. However, in facilities such as data centers and 5G small base stations, copper wires offer advantages that cannot be replaced by optical fiber in voice transmission and power supply. To reduce costs and fully utilize pipeline resources, copper wires and optical fibers are being combined and air-blown installations are being used to achieve capacity expansion. However, while the quality of air-blown optical cables improves after the copper wires are added, the efficiency of air-blown installation in pipelines decreases significantly, especially when encountering bends in the pipeline, where resistance increases dramatically and passage is difficult. Summary of the Invention

[0003] The purpose of the present invention is to solve the above-mentioned shortcomings and provide a zigzag optical fiber blown cable. The outer sheath of the optical cable is zigzag-shaped, and copper wire is wrapped in the zigzag teeth. It can provide more functions and can also provide a variety of transmission technologies. It has high applicability with equipment, strong scalability, and a wider range of product applications. The zigzag outer sheath has a small contact area with the surrounding area, small friction resistance, and concentrated force points.

[0004] In order to achieve the above-mentioned purpose, a zigzag optical fiber blown cable is designed, comprising an optical fiber unit 5, which is placed at the center of the optical cable. The optical fiber unit 5 comprises an optical fiber 1, a fiber paste 2, a sleeve inner layer 3 and a sleeve outer layer 4. A plurality of optical fibers 1 are provided, and the plurality of optical fibers 1 are evenly distributed in the sleeve inner layer 3. The adjacent optical fibers 1 are filled with fiber paste 2, and the fiber paste 2 fills the sleeve inner layer 3. The sleeve inner layer 3 is wrapped with the sleeve outer layer 4, and the sleeve inner layer 3 is tightly fitted with the sleeve outer layer 4. The sleeve outer layer 4 is wrapped with an outer sheath layer 6, and the outer sheath layer 6 is a high-density polyethylene material layer. The outer sheath layer 6 has a zigzag structure, and copper wire 7 is wrapped in the saw teeth.

[0005] Furthermore, the inner layer 3 of the sleeve is made of polycarbonate, and the outer layer 4 of the sleeve is made of polybutylene terephthalate, so that the optical cable has a certain rigidity and ensures the air blowing effect.

[0006] Furthermore, the outer sheath layer 6 is composed of four areas, namely area 1 601, area 2 602, area 3 603 and area 4 604. The four areas are distributed in a circle and are all in the shape of a "mountain". Each "mountain"-shaped area is equal in size and has the same shape.

[0007] Furthermore, a copper wire 7 is embedded in the middle tooth-shaped position of the area 1 601, and an elastic unit 10 is provided in each of the left and right tooth-shaped positions of the area 1 601. The elastic unit 10 is a circle with a radius of R, and four reinforcing ribs are provided in the elastic unit 10, namely reinforcing rib 1 101, reinforcing rib 2 102, reinforcing rib 3 103 and reinforcing rib 4 104. The four reinforcing ribs are all crescent-shaped; the reinforcing rib 101 is an area composed of an arc with a radius of R and an angular arc of 120°±2° and a straight line between two points on the arc edge, and the arc completely coincides with the circular edge. The tip of one side of the reinforcing rib 2 102 is connected to the first 1 / 3 of the straight side of the reinforcing rib 101 along the clockwise direction of its arc, and the tip of the other side of the reinforcing rib 2 102 is connected to the circle. Rib two 102 and reinforcing rib one 101 form an angle of 70°, and the distribution mode of reinforcing rib three 103 and reinforcing rib two 102, as well as reinforcing rib four 104 and reinforcing rib three 103 are the same as the distribution mode of reinforcing rib two 102 and reinforcing rib one 101; this structural setting can concentrate the force on the side of the optical cable on each elastic unit 10, and reinforcing rib one 101, reinforcing rib two 102, reinforcing rib three 103, and reinforcing rib four 104 generate elastic potential energy in their respective directions, so that at an air blowing speed of 50m / min, the outer sheath layer 6 of the optical cable and the inner wall of the turning point in the air blowing pipe undergo elastic deformation and rebound, easily making the forward section of the optical cable turn to the path on the other side of the pipe, greatly reducing the resistance of the optical cable through the pipe turning point, reducing the loss of air blowing rate, and improving the air blowing laying efficiency.

[0008] Furthermore, the reinforcing ribs 101, 102, 103, and 104 are of different sizes but the same shape, and the crescent has the arc protruding direction as its positive direction. The reinforcing ribs 101, 102, 103, and 104 are distributed counterclockwise within the circle. The four reinforcing ribs are all made of polyurethane material, and the radius R of the circle is 0.8-3 mm. The remaining area within the elastic unit 10 is a buffer area.

[0009] Furthermore, the area three 603 and the area one 601 are symmetrical to each other, and a non-metallic reinforcement core 8 is embedded in the middle tooth position of the area three 603. The non-metallic reinforcement core 8 has a zigzag structure, so that the adhesion area with the outer sheath 6 is larger, and the optical cable retraction effect is improved excellently; an elastic unit 10 is respectively provided in the left and right tooth positions of the area three 603, and the copper wire 7 in the area one 601 and the non-metallic reinforcement core 8 in the area three 603 are symmetrically distributed, and the surface of the non-metallic reinforcement core 8 is coated with resin.

[0010] Furthermore, the copper wire 7 is woven from a plurality of copper wires, and the specification of the copper wire 7 is 0.05-5 mm².

[0011] Furthermore, the second region 602 and the fourth region 604 are equal in size and symmetrical to each other. The second region 602 and the fourth region 604 each contain three tooth-shaped regions, and an elastic unit 10 is disposed in each tooth-shaped region.

[0012] Furthermore, four buffer cavities 9 are provided between the outer sheath layer 6 and the outer layer 4 of the casing. The four buffer cavities 9 are equal in size and shape, and the shapes of the four buffer cavities 9 are all triangular. The buffer cavity 9 allows construction workers to easily peel it open and divide the outer sheath layer 6 into four blocks: area 1 601, area 2 602, area 3 603, and area 4 604.

[0013] Furthermore, the optical fiber 1 is a colored optical fiber, and the number of cores of the optical fiber 1 is 2 cores, 4 cores, 6 cores, 8 cores, 12 cores or 24 cores.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] (1) The optical cable of the present invention has a high optical fiber density and is light in weight. The optical cable is zigzag-shaped, has a small contact area with the surrounding area, has low friction resistance, is easy to lay by air blowing, and occupies a small space in the pipeline;

[0016] (2) The casing layer of the optical cable of the present invention is divided into an inner and outer double layer. The inner layer of the casing is made of polycarbonate, which makes the optical cable have a certain rigidity and ensures the air blowing effect;

[0017] (3) The outer sheath of the optical cable of the present invention is zigzag-shaped, and the zigzags are wrapped with copper wires, which can provide more functions and can also provide a variety of transmission technologies. It has high applicability with equipment, strong scalability, and a wider range of product applications;

[0018] (4) The optical cable of the present invention is provided with a serrated outer sheath, an elastic unit and a buffer cavity. The serrated outer sheath makes it easier for the force on the side of the optical cable to be concentratedly applied to the elastic unit. When the elastic unit and the buffer cavity are deformed, elastic potential energy is generated, which allows the optical cable to pass through the bend of the pipe easily. It can also improve the impact resistance of the optical cable and reduce the weight of the optical cable.

[0019] (5) The serrated outer sheath of the present invention has a small contact area with the surrounding area, small friction resistance, concentrated force points, and is provided with an elastic unit and a buffer cavity, which reduces the resistance of the air blowing process through the pipe bend, making the air blowing effect better;

[0020] In summary, the optical fiber of the present invention has high density and light weight. Because it is equipped with copper wire, it has more diverse functions and can provide a variety of transmission technologies. The outer sheath of the optical cable is serrated, which protects the copper wire when the outer diameter is limited. The serrations have a small contact area with the surrounding area, which can effectively reduce the friction resistance during the air blowing process, and can also make it easier for the side force to be applied to the elastic unit, which deforms together with the buffer cavity to generate elastic potential energy. The sleeve is divided into an inner and outer layer. The inner layer material of the sleeve is polycarbonate, which can provide a certain rigidity to the optical cable and is not easy to bend. The buffer cavity makes the optical cable lighter as a whole and has better impact resistance, and is worthy of promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a structural schematic diagram of region 1 in the outer sheath of the optical cable of the present invention;

[0023] Figure 3 This is a schematic diagram of the force applied to a single elastic unit of the optical cable of the present invention;

[0024] Figure 4 This is a schematic diagram of the deformation of a single elastic unit of the optical cable of the present invention;

[0025] Figure 5 This is a schematic diagram of the force applied to the local area of the optical cable of the present invention. Figure 1 ;

[0026] Figure 6 This is a schematic diagram of the deformation of the local area of the optical cable of the present invention Figure 1 ;

[0027] Figure 7 This is a schematic diagram of the force applied to the local area of the optical cable of the present invention. Figure 2 ;

[0028] Figure 8 This is a schematic diagram of the deformation of the local area of the optical cable of the present invention Figure 2 ;

[0029] In the figure: 1, optical fiber 2, fiber paste 3, inner layer of casing 4, outer layer of casing 5, optical fiber unit 6, outer sheath layer 601, area 1 602, area 2 603, area 3 604, area 4 7, copper wire 8, non-metallic reinforcement core 9, buffer cavity 10, elastic unit 101, reinforcement rib 1 102, reinforcement rib 2 103, reinforcement rib 3 104, reinforcement rib 4. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings:

[0031] As shown in the accompanying drawings, the present invention provides a zigzag optical fiber blown cable, including an optical fiber unit 5, which is placed at the center of the optical cable. The optical fiber unit 5 includes an optical fiber 1, a fiber paste 2, a sleeve inner layer 3 and a sleeve outer layer 4. A plurality of optical fibers 1 are provided, and the plurality of optical fibers 1 are evenly distributed in the sleeve inner layer 3. Fiber paste 2 is filled between adjacent optical fibers 1, and the fiber paste 2 fills the sleeve inner layer 3, that is, the sleeve inner layer 3 is filled with fiber paste 2 to prevent moisture from eroding the optical fiber (water blocking), protecting the optical fiber and acting as a cushion. It can buffer the impact, vibration, bending and other mechanical forces received by the optical fiber. The sleeve inner layer 3 is made of polycarbonate, and the sleeve inner layer 3 is wrapped with the sleeve outer layer 4. The inner layer 3 of the tube fits tightly with the outer layer 4 of the sleeve. The outer layer 4 of the sleeve is made of polybutylene terephthalate. The outer layer 4 of the sleeve is wrapped with an outer sheath layer 6. The outer sheath layer 6 is a high-density polyethylene material layer. The outer sheath layer 6 has a zigzag structure, and copper wire 7 is wrapped in the zigzag. The copper wire 7 is woven from multiple copper wires, and the specification of the copper wire 7 is 0.05-5mm²; inside the outer sheath layer 6, that is, between the outer sheath layer 6 and the outer layer 4 of the sleeve, four buffer cavities 9 are provided. The four buffer cavities 9 are equal in size and shape, and the shape of the four buffer cavities 9 is triangular; the optical fiber 1 is a colored optical fiber, and the number of cores of the optical fiber 1 is 2 cores, 4 cores, 6 cores, 8 cores, 12 cores or 24 cores.

[0032] The outer sheath layer 6 is composed of four regions: Region 1 601, Region 2 602, Region 3 603, and Region 4 604. These regions are distributed in a circular pattern and are all in the shape of a "mountain." Each "mountain"-shaped region is equal in size and shape. A copper wire 7 is embedded in the central tooth-shaped portion of Region 1 601. Each of the left and right tooth-shaped portions of Region 1 601 has an elastic unit 10. Elastic unit 10 is a circle with a radius of R. Four reinforcing ribs are located within elastic unit 10: Reinforcing Rib 1 101, Reinforcing Rib 2 102, Reinforcing Rib 3 103, and Reinforcing Rib 4 104. All four ribs are crescent-shaped. Reinforcing Rib 101 is formed by a sector-shaped arc with a radius of R and an angle of 120°±2°, and a straight line between two points on the edge of the arc. The arc completely overlaps the circular edge. The tip of one side of reinforcing rib 2 102 is connected to the first 1 / 3 of the straight edge of reinforcing rib 1 101 along the clockwise direction of the arc. The tip of the other side of reinforcing rib 2 102 is connected to the circle. Reinforcing rib 2 102 and reinforcing rib 1 101 form a 70° angle. The distribution pattern of reinforcing rib 3 103 and reinforcing rib 2 102, as well as that of reinforcing rib 4 104 and reinforcing rib 3 103, are the same as that of reinforcing rib 2 102 and reinforcing rib 1 101. Reinforcing rib 1 101, reinforcing rib 2 102, reinforcing rib 3 103, and reinforcing rib 4 104 are different in size but identical in shape. The crescents are oriented in the direction of the arc's protrusion. Reinforcing rib 1 101, reinforcing rib 2 102, reinforcing rib 3 103, and reinforcing rib 4 104 are distributed counterclockwise within the circle. The four reinforcing ribs are all made of polyurethane material, and the radius R of the circle is 0.8-3 mm. The remaining area in the elastic unit 10 is a buffer area.

[0033] Region 3 603 is symmetrical to Region 1 601. A non-metallic reinforcement core 8 is embedded within the central tooth-shaped portion of Region 3 603. The non-metallic reinforcement core 8 has a zigzag structure, and an elastic unit 10 is located within each of the left and right tooth-shaped portions of Region 3 603. The copper wire 7 within Region 1 601 and the non-metallic reinforcement core 8 within Region 3 603 are symmetrically distributed. The non-metallic reinforcement core 8 is coated with resin. The zigzag structure of the non-metallic reinforcement core 8 provides a larger adhesion area with the outer jacket 6, effectively improving cable retraction. Region 2 602 and Region 4 604 are equal in size and symmetrical. Both contain three tooth-shaped areas, each of which is equipped with an elastic unit 10.

[0034] By coordinating the above-mentioned structure, the force on the side of the optical cable can be concentrated on each elastic unit 10, causing the elastic unit 10 and the buffer cavity 9 to deform, and the reinforcing ribs 101, 102, 103, 104, and 9 to generate elastic potential energy in their respective directions. At an air blowing speed of 50m / min, the outer sheath layer 6 of the optical cable and the inner wall of the bend in the air blowing pipe undergo elastic deformation and rebound, easily allowing the forward section of the optical cable to turn to the other side of the pipe, greatly reducing the resistance of the optical cable passing through the pipe bend, reducing the loss of air blowing speed, and improving the efficiency of air blowing installation. The buffer cavity 9 allows construction workers to easily peel and divide the outer sheath layer 6 into four areas: area 1 601, area 2 602, area 3 603, and area 4 604. The copper wire 7 is made of multiple fine copper wires, and the specifications of the copper wire 7 are 0.05-5mm². The non-metallic strengthening core 8 is serrated, so that the adhesion area with the outer sheath layer 6 is larger, and the effect of improving the retraction of the optical cable is excellent.

[0035] In the present invention, the optical fiber 1 is a colored optical fiber having 2, 4, 6, 8, 12, or 24 cores. The outer sheath layer 4 is tightly connected to the inner sheath layer 3 of the optical fiber. The inner sheath layer 3 is filled with optical fiber grease 2 to prevent moisture from eroding the optical fiber (water blocking), protecting the optical fiber and acting as a cushion to buffer the impact, vibration, bending, and other mechanical forces on the optical fiber. The outer sheath layer 6 is composed of region 1 601, region 2 602, region 3 603, and region 4 604. Four buffer cavities 9 are provided in these four regions to facilitate stripping by construction personnel. The sheath layer is divided into an inner and outer layer. The inner sheath is made of polycarbonate, which gives the optical cable a certain degree of rigidity. The serrated non-metallic reinforcement core 8 can more effectively ensure the optical cable retraction, making it less likely to bend or twist during the air blowing process, thus ensuring the air blowing effect.

[0036] In summary, the present invention has the advantages of high optical fiber density, light weight, strong functionality and small size. The outer sheath of the optical cable is zigzag, and copper wire is wrapped in the zigzag, which can provide more functions and also provide a variety of transmission technologies. It has high applicability with equipment, strong scalability, and a wider range of product applications. While providing richer functions, it does not increase the size of the optical cable. The zigzag outer sheath has a small contact area with the surrounding area, and the friction resistance generated is small, and the force is concentrated. It works together with the elastic unit and the buffer cavity to improve the bending effect of the optical cable pipeline during the air blowing process, and can also reduce the cable Its own quality; specifically, the serrated outer sheath makes it easier for the side force of the optical cable to be concentratedly applied to the elastic unit. During air blowing installation, the elastic unit and the buffer cavity work together to make the head section of the optical cable moving at high speed hit the inner wall of the air blowing pipe bend. It can rebound under the action of the side force and easily turn to the path on the other side of the pipe. It can also improve the impact resistance of the optical cable, reduce the weight of the optical cable, and improve the efficiency of air blowing installation. In addition, the casing is divided into an inner and outer layer structure. The inner casing is made of polycarbonate material, which makes the optical cable have a certain rigidity and excellent air blowing effect.

[0037] The present invention is not limited to the above-mentioned embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A zigzag optical fiber blown cable, comprising an optical fiber unit (5), wherein the optical fiber unit (5) is placed at the center of the optical fiber cable, characterized in that: The optical fiber unit (5) comprises an optical fiber (1), a fiber paste (2), a sleeve inner layer (3) and a sleeve outer layer (4); a plurality of optical fibers (1) are provided, and the plurality of optical fibers (1) are evenly distributed in the sleeve inner layer (3); fiber paste (2) is filled between adjacent optical fibers (1); the fiber paste (2) fully fills the sleeve inner layer (3); the sleeve inner layer (3) is wrapped with the sleeve outer layer (4); the sleeve inner layer (3) is tightly fitted with the sleeve outer layer (4); and the sleeve outer layer (4) is wrapped with an outer sheath layer (6). The outer sheath layer (6) is a high-density polyethylene material layer, and the outer sheath layer (6) has a zigzag structure, and the zigzags are wrapped with copper wires (7); the outer sheath layer (6) is composed of four areas, namely area one (601), area two (602), area three (603) and area four (604), the four areas are distributed in a circle, and are all in the shape of a "mountain", and each "mountain"-shaped area is equal in size and shape; a copper wire (7) is embedded in the middle tooth position of the area one (601), and the area one (602) is a copper wire (7) embedded in the middle tooth position of the area one (601). (601) There is an elastic unit (10) in each of the left and right tooth positions. The elastic unit (10) is a circle with a radius of R. Four reinforcing ribs are provided in the elastic unit (10), namely reinforcing rib 1 (101), reinforcing rib 2 (102), reinforcing rib 3 (103) and reinforcing rib 4 (104). The four reinforcing ribs are all crescent-shaped. The reinforcing rib 1 (101) is an area composed of an arc with a radius of R and an angular arc of 120°±2° and a straight line between two points on the arc edge. The arc and the circular edge completely coincide with each other. The tip of one side of the reinforcing rib 2 (102) is connected to the first 1 / 3 of the straight side of the reinforcing rib 1 (101) along the clockwise direction of the arc, and the tip of the other side of the reinforcing rib 2 (102) is connected to the circle. The reinforcing rib 2 (102) and the reinforcing rib 1 (101) form an angle of 70 degrees. The distribution mode of the reinforcing rib 3 (103) and the reinforcing rib 2 (102), as well as the distribution mode of the reinforcing rib 4 (104) and the reinforcing rib 3 (103) are the same as the distribution mode of the reinforcing rib 2 (102) and the reinforcing rib 1 (101).

2. The zigzag photovoltaic electric blowing cable according to claim 1, characterized in that: The inner layer (3) of the sleeve is made of polycarbonate, and the outer layer (4) of the sleeve is made of polybutylene terephthalate.

3. The zigzag photovoltaic electric blowing cable according to claim 1, wherein: The reinforcing rib one (101), the reinforcing rib two (102), the reinforcing rib three (103), and the reinforcing rib four (104) are of different sizes but the same shape, and the crescent has the arc convex direction as its positive direction. The reinforcing rib one (101), the reinforcing rib two (102), the reinforcing rib three (103), and the reinforcing rib four (104) are distributed counterclockwise in the circle. The four reinforcing ribs are all made of polyurethane material, and the radius R of the circle is 0.8-3 mm. The remaining area in the elastic unit (10) is a buffer area.

4. The zigzag photovoltaic electric blowing cable according to claim 1, wherein: The region three (603) and the region one (601) are symmetrical to each other. A non-metallic reinforcing core (8) is embedded in the middle tooth-shaped position of the region three (603). The non-metallic reinforcing core (8) is a sawtooth structure. An elastic unit (10) is provided in each of the left and right tooth-shaped positions of the region three (603). The copper wire (7) in the region one (601) and the non-metallic reinforcing core (8) in the region three (603) are symmetrically distributed. The surface of the non-metallic reinforcing core (8) is coated with resin.

5. The zigzag photovoltaic electric blowing cable according to claim 1, wherein: The copper wire (7) is woven from a plurality of copper wires, and the specification of the copper wire (7) is 0.05-5 mm².

6. The zigzag photovoltaic electric blowing cable according to claim 1, wherein: The area 2 (602) and the area 4 (604) are equal in size and symmetrical to each other. The area 2 (602) and the area 4 (604) each contain three tooth-shaped areas, and an elastic unit (10) is provided in each tooth-shaped area.

7. The zigzag photovoltaic electric blowing cable according to claim 1, characterized in that: Four buffer cavities (9) are provided between the outer sheath layer (6) and the outer layer (4) of the casing. The four buffer cavities (9) are equal in size and shape, and the shapes of the four buffer cavities (9) are all triangular.

8. The zigzag photovoltaic electric blowing cable according to claim 1, wherein: The optical fiber (1) is a colored optical fiber, and the number of cores of the optical fiber (1) is 2 cores, 4 cores, 6 cores, 8 cores, 12 cores or 24 cores.

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