阅读说明：本技术 一种采用导向罩的感温光纤式电力电缆接头结构 (Temperature sensing optical fiber type power cable joint structure adopting guide cover ) 是由 李新荷 于 2019-11-11 设计创作，主要内容包括：本发明公开了一种采用导向罩的感温光纤式电力电缆接头结构,包括两根电缆线,所述电缆线的内部设置有多个填充管,所述电缆线的内部设置有绝缘护套,所述绝缘护套的内部设置有多根电源线,所述电缆线的内部设置有松套管,所述松套管的内部设置有感温光纤,所述松套管与感温光纤之间设置有套管填充物,所述电缆线的端头处套设有钢铠、端头护层、铜屏蔽层、外半导层、线芯绝缘层,所述钢铠位于电缆线的端头后端。本发明结构设计合理,可以有效的避免感温光纤不规则随意缠绕在铜连接管外表面,容易造成局部感温光纤曲率半径过小或损坏光纤的情况,且大大的提高了电缆接头自身的防护安全性能,提高电缆接头的使用效果。(The invention discloses a temperature sensing optical fiber type power cable joint structure adopting a guide cover, which comprises two cables, wherein a plurality of filling pipes are arranged inside the cables, an insulating sheath is arranged inside the cables, a plurality of power wires are arranged inside the insulating sheath, a loose tube is arranged inside the cables, temperature sensing optical fibers are arranged inside the loose tube, a tube filler is arranged between the loose tube and the temperature sensing optical fibers, a steel armor, an end protective layer, a copper shielding layer, an outer semi-conductive layer and a wire core insulating layer are sleeved at the end of each cable, and the steel armor is positioned at the rear end of the end of each cable. The temperature-sensing optical fiber cable connector is reasonable in structural design, the situation that the temperature-sensing optical fiber is irregularly and randomly wound on the outer surface of a copper connecting pipe, the curvature radius of the local temperature-sensing optical fiber is too small or the optical fiber is damaged is easily caused, the protection safety performance of the cable connector is greatly improved, and the using effect of the cable connector is improved.)

1. A temperature sensing optical fiber type power cable joint structure with a guide cover comprises two cables (1) and is characterized in that a plurality of filling pipes (28) are arranged inside the cables (1), an insulating sheath (23) is arranged inside the cables (1), a plurality of power lines (19) are arranged inside the insulating sheath (23), a loose tube (21) is arranged inside the cables (1), a temperature sensing optical fiber (22) is arranged inside the loose tube (21), a tube filler (20) is arranged between the loose tube (21) and the temperature sensing optical fiber (22), a steel armor (14), an end protective layer (8), a copper shielding layer (3), an outer semi-conductive layer (4) and an insulating layer (13) are sleeved at the end of each cable (1), and the steel armor (14) is located at the rear end of each cable (1), end sheath (8), copper shield layer (3), outer semiconductive layer (4), sinle silk insulating layer (13) are by outer and interior setting gradually and form two connect through coupling mechanism between the end of cable conductor (1), two be provided with between cable conductor (1) semiconductive pipe (7), two cable conductors (1) and the junction of semiconductive pipe (7) all overlap and are equipped with pyrocondensation branch cover (2), the inside packing of pyrocondensation branch cover (2) has packing glue (9).

2. The temperature-sensing optical fiber type power cable joint structure with the guide cover according to claim 1, wherein the wire tube of the cable (1) comprises an outer sheath (24), an aluminum-coated tape (25), a water-blocking material layer (26) and an inner cable sheath (27), the water-blocking material layer (26) is located outside the inner cable sheath (27), the aluminum-coated tape (25) is located outside the water-blocking material layer (26), and the outer sheath (24) is located outside the aluminum-coated tape (25).

3. The temperature-sensing optical fiber type power cable joint structure using the guide cover according to claim 1, wherein the outer side of the semi-conductive pipe (7) is wrapped with an armor tape (15), the armor tape (15) is woven from special glass fiber to form a high-strength and high-elasticity fabric, and then a water-curable polymer compound is coated on the surface of the woven tape to form a glass fiber product.

4. The temperature-sensing optical fiber type power cable joint structure adopting the guide cover according to claim 1, wherein an inner insulation layer (6) is disposed outside the semi-conductive pipe (7), a waterproof tape (16) is disposed outside the inner insulation layer (6), a copper shielding mesh (17) is disposed outside the waterproof tape (16), and an outer insulation layer (18) is disposed outside the copper shielding mesh (17).

5. The temperature-sensing optical fiber type power cable joint structure adopting the guide cover as claimed in claim 1, wherein the connecting mechanism comprises an intermediate connecting pipe (5) arranged inside the semi-conductive pipe (7), the front end of the cable (1) extends to the inside of the intermediate connecting pipe (5), a conductor connecting fitting (12) is arranged inside the intermediate connecting pipe (5), the end of the cable (1) is connected with the conductor connecting fitting (12), and a semi-conductive tape insulating tape (11) is sleeved at the joint of the end of the cable (1) and the conductor connecting fitting (12).

6. The temperature-sensing optical fiber type power cable joint structure using the guide cover according to claim 1, wherein the joint between the outer semi-conductive layer (4) and the core insulation layer (13) is sleeved with a stress tube (10).

7. A temperature-sensitive optical fiber type power cable joint structure using a guide cover according to claim 1, wherein said sleeve filler (20) is made of a mastic material which functions as an insulation while preventing rainwater from entering the cable by using water and oil insoluble property.

8. The temperature-sensing optical fiber type power cable joint structure using the guide cover according to claim 1, wherein the filling compound (9) is a waterproof sealant material, and the waterproof sealant material is a one-component butyl rubber waterproof sealant.

Technical Field

The invention relates to the technical field of power cable joint structures, in particular to a temperature-sensing optical fiber type power cable joint structure adopting a guide cover.

Background

The cable connector is also called a cable head. After the cable is laid, the sections of the cable must be connected together in order to form a continuous line, and these connections are called cable connectors. The cable joints at the middle of the cable run are called intermediate joints and the cable joints at the two ends of the run are called termination joints. The cable joint is used for locking and fixing the incoming and outgoing lines, and plays a role in water resistance, dust prevention and vibration prevention.

At present, temperature-sensing optical fiber power cables are widely applied in life, the actual temperature of a conductor in the process of cable operation can be monitored in real time through temperature-sensing optical fibers, temperature changes can be mastered, important reference parameters are provided for the operation of a power system, and the safety performance of the cable in the operation process is greatly improved. The temperature sensing optical fiber has two arrangement modes in the cable, wherein the first arrangement mode is that the temperature sensing optical fiber is arranged between an insulation shielding layer and a corrugated aluminum sheath of the cable; a second arrangement is to place the temperature sensitive optical fibre inside the conductor. Among the prior art, temperature sensing optical fiber often adopts the setting of second kind mode when the installation, with the mode of temperature sensing optical fiber winding at copper connecting pipe surface, but such mode can lead to temperature sensing optical fiber irregular random winding at copper connecting pipe surface, just cause local temperature sensing optical fiber curvature radius undersize easily, the condition of damaging temperature sensing optical fiber appears even, be unfavorable for the setting installation of temperature sensing optical fiber, and current cable joint's protection safety is not good, great reduction cable joint's result of use and the life who shortens.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a temperature-sensing optical fiber type power cable joint structure adopting a guide cover.

In order to achieve the purpose, the invention adopts the following technical scheme:

a temperature sensing optical fiber type power cable joint structure adopting a guide cover comprises two cables, wherein a plurality of filling pipes are arranged inside the cables, an insulating sheath is arranged inside the cables, a plurality of power wires are arranged inside the insulating sheath, a loose tube is arranged inside the cables, temperature sensing optical fibers are arranged inside the loose tube, a sleeve filler is arranged between the loose tube and the temperature sensing optical fibers, a steel armor, an end protective layer, a copper shielding layer, an outer semiconductive layer and a core insulating layer are sleeved at the end of each cable, the steel armor is positioned at the rear end of the end of each cable, the end protective layer, the copper shielding layer, the outer semiconductive layer and the core insulating layer are sequentially arranged from outside to inside, the ends of the two cables are connected through a connecting mechanism, a semiconductive pipe is arranged between the two cables, and a thermal shrinkage support sleeve is sleeved at the joint of the two cables and the semiconductive pipe, and filling glue is filled in the thermal shrinkage support sleeve.

Preferably, the spool of cable conductor includes that oversheath, plastic-coated aluminum strip, water blocking material layer, cable inner sheath constitute, water blocking material layer is located the outside of cable inner sheath, plastic-coated aluminum strip is located the outside of water blocking material layer, the oversheath is located the outside of plastic-coated aluminum strip.

Preferably, the outer side of the semi-conductive pipe is wrapped with an armor belt, the armor belt is woven by special glass fibers into a fabric with a high-strength and high-elasticity structure, and then the surface of the woven belt is coated with a water-curing high polymer compound to prepare a glass fiber product.

Preferably, an inner insulating layer is arranged outside the semi-conductive pipe, a waterproof adhesive tape is arranged outside the inner insulating layer, a copper shielding net is arranged outside the waterproof adhesive tape, and an outer insulating layer is arranged outside the copper shielding net.

Preferably, coupling mechanism is including setting up at the inside intermediate junction pipe of semi-conductive pipe, the end front end of cable conductor extends to the inside of intermediate junction pipe, the inside of intermediate junction pipe is provided with conductor link fitting, the end and the conductor link fitting of cable conductor are connected, the end of cable conductor is equipped with semi-conductive tape insulating tape with the junction cover of conductor link fitting.

Preferably, the joint between the outer semi-conductive layer and the core insulating layer is sleeved with a stress tube.

Preferably, the sleeve filling is made of a mastic material which acts as an insulation while preventing rain water from entering the cable by virtue of the water and oil insoluble nature.

Preferably, the filling adhesive is a waterproof sealant material, and the waterproof sealant material is a single-component butyl rubber waterproof sealant.

The invention has the beneficial effects that:

the temperature sensing optical fiber is arranged inside the wire core of the cable, so that the temperature sensing optical fiber can be prevented from being irregularly and randomly wound on the outer surface of the copper connecting pipe, the curvature radius of the local temperature sensing optical fiber is easy to be too small or the optical fiber is easy to be damaged, and the temperature sensing optical fiber cannot be damaged by line butt joint of the cable.

The glass fiber product is prepared by arranging the armor belt, weaving the armor belt into a fabric with a high-strength and high-elasticity structure by adopting special glass fibers, and then coating a water-curing high molecular compound on the surface of the woven belt. The semi-conductive tube has the characteristics of rapid curing in water, simple and convenient operation, wide application range and the like, and the structure formed after curing has high bending strength and tensile strength, is nontoxic, odorless, non-irritant, water-resistant and corrosion-resistant, is convenient to use and carry, can be molded at will, and can enhance the protective performance of the semi-conductive tube;

through setting up copper shield net, copper shield net has the non-magnetism nature, and the extensibility is good, the effectual characteristics of shielding, and the mesh is even, and density is big, can shielding signal and radiation. The copper has the properties of electromagnetic resistance, sound effect resistance and even electron beam shielding; by arranging the stress tube, the stress tube achieves the effect of dispersing electric stress on the basis of not damaging the main insulating layer, and is sleeved at the fracture of the copper shielding layer so as to disperse the electric field stress (power line) at the fracture and ensure that the cable can run reliably;

the casing filler is made of an ointment material, and the optical cable ointment plays an insulating role and prevents rainwater from entering the cable by utilizing the property that water and oil are insoluble. Meanwhile, the optical fiber is padded, so that the influence of mechanical forces such as vibration, impact, bending and the like on the optical fiber can be buffered;

the filling adhesive is a waterproof sealant material, and the waterproof sealant is a single-component butyl rubber waterproof sealant which does not contain an aromatic hydrocarbon toxic solvent, belongs to an environment-friendly product, and has good adhesive force on the surfaces of concrete, metal, wood, stone, plastic steel and sunlight plates.

Drawings

Fig. 1 is a schematic cross-sectional view of a temperature-sensing optical fiber power cable joint structure using a guide cover according to the present invention;

FIG. 2 is a schematic structural diagram of a temperature-sensing optical fiber power cable joint structure using a guide cover according to the present invention;

FIG. 3 is a schematic cross-sectional view of a semi-conductive tube in a temperature-sensing optical fiber power cable joint structure using a guide cover according to the present invention;

fig. 4 is a schematic structural diagram of a cable in a temperature-sensing optical fiber power cable joint structure using a guide cover according to the present invention.

In the figure: 1 cable conductor, 2 pyrocondensation branch cover, 3 copper shield layer, 4 outer semiconductive layers, 5 intermediate connecting pipes, 6 inner insulating layer, 7 semiconductive pipe, 8 end protective layer, 9 filling glue, 10 stress tube, 11 semiconductive belt insulating tape, 12 conductor link fitting, 13 core insulating layer, 14 steel armor, 15 armor belt, 16 waterproof adhesive tape, 17 copper shield net, 18 outer insulating layer, 19 power cord, 20 sleeve filler, 21 loose sleeve, 22 temperature sensing optical fiber, 23 insulating sheath, 24 outer sheath, 25 plastic-coated aluminum tape, 26 water-blocking material layer, 27 cable inner protective layer, 28 filling pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-4, a temperature-sensing optical fiber type power cable joint structure using a guide cover comprises two cables 1, a plurality of filling tubes 28 are arranged inside the cables 1, an insulating sheath 23 is arranged inside the cables 1, a plurality of power cords 19 are arranged inside the insulating sheath 23, a loose tube 21 is arranged inside the cables 1, a temperature-sensing optical fiber 22 is arranged inside the loose tube 21, a tube filler 20 is arranged between the loose tube 21 and the temperature-sensing optical fiber 22, a steel armor 14, an end sheath 8, a copper shielding layer 3, an outer semi-conductive layer 4 and a core insulating layer 13 are sleeved at the end of the cables 1, the steel armor 14 is arranged at the rear end of the cables 1, the end sheath 8, the copper shielding layer 3, the outer semi-conductive layer 4 and the core insulating layer 13 are sequentially arranged from outside to inside, the ends of the two cables 1 are connected by a connecting mechanism, a semi-conductive tube 7 is arranged between the, the junction of two cables 1 and semi-conductive pipe 7 all is equipped with pyrocondensation branch cover 2, and the inside packing of pyrocondensation branch cover 2 has filling glue 9, and pyrocondensation branch cover 2 is when the heating installation, and the substrate is in radial shrink, and inside compound glue film melts, and the cladding is in benefit mouth department tightly, has formed a firm anticorrosive body outside cable 1 together with the substrate, has excellent stand wear and tear, corrosion-resistant, shock resistance and good ultraviolet resistance and photoaging property.

Specifically, the line pipe of the cable 1 comprises an outer sheath 24, a plastic-coated aluminum tape 25, a water blocking material layer 26 and a cable inner sheath 27, wherein the water blocking material layer 26 is located outside the cable inner sheath 27, the plastic-coated aluminum tape 25 is located outside the water blocking material layer 26, the outer sheath 24 is located outside the plastic-coated aluminum tape 25, the outer sheath 24 is made of polyethylene, the polyethylene is odorless and nontoxic, feels like wax, and has excellent low temperature resistance (the lowest using temperature can reach-100 ~ -70 ℃), good chemical stability, resistance to most of acid and alkali erosion (the resistance to acid with oxidation property), insolubility in common solvents at normal temperature, small water absorption and excellent electric insulation.

Specifically, the armor belt 15 is wrapped on the outer side of the semi-conductive pipe 7, special glass fiber is woven into a fabric with a high-strength and high-elasticity structure, and then the surface of the woven fabric is coated with a water-cured high molecular compound to prepare a glass fiber product. The curing agent has the characteristics of rapid curing in water, simple and convenient operation, wide application range and the like, and the structure formed after curing has high bending strength and tensile strength, is nontoxic, tasteless, non-irritant, water-resistant and corrosion-resistant. Because of convenient use and portability, and can be shaped at will.

Specifically, the outside of semi-conductive pipe 7 is provided with inner insulating layer 6, and the outside of inner insulating layer 6 is provided with waterproof sticky tape 16, and the outside of waterproof sticky tape 16 is provided with copper shield net 17, and the outside of copper shield net 17 is provided with outer insulating layer 18, and copper shield net 17 has the magnetism-free nature, and the extensibility is good, shields effectual characteristics, and the mesh is even, and density is big, can shield signal and radiation. The copper has the properties of electromagnetic resistance, sound effect prevention and even electron beam shielding.

Specifically, coupling mechanism is including setting up at the inside intermediate junction pipe 5 of semi-conductive pipe 7, and cable conductor 1's end front end extends to the inside of intermediate junction pipe 5, and the inside of intermediate junction pipe 5 is provided with conductor link fitting 12, and cable conductor 1's end is connected with conductor link fitting 12, and the junction cover of cable conductor 1's end and conductor link fitting 12 is equipped with semi-conductive area insulating tape 11 for prevent the electric leakage, play insulating rubber belt. Also called as an insulating rubberized fabric, a rubberized tape consists of a base band and a pressure-sensitive adhesive layer. The base belt is generally made of cotton cloth, synthetic fiber fabric, plastic film and the like, and the adhesive layer is made of compounding agents such as rubber and tackifying resin and the like, so that the base belt is good in viscosity and excellent in insulating property. The insulating tape has the characteristics of good insulation, pressure resistance, flame retardance, weather resistance and the like, and is suitable for wire connection, electrical insulation, heat insulation protection and the like.

Specifically, the stress tube 10 is sleeved at the joint between the outer semi-conductive layer 4 and the core insulating layer 13, a grounded (copper) shielding layer is arranged outside each phase of core of the high-voltage cable, and an electric field distributed radially is formed between the conductive core and the shielding layer. That is, the electric field of the normal cable has only electric lines of force from the (copper) conductor along the semi-radial (copper) shield layer, and has no electric field (electric lines of force) in the axial direction of the core, and the electric field distribution is uniform. The stress tube 10 achieves the effect of dispersing electric stress on the basis of not damaging the main insulating layer, and is sleeved at the fracture of the copper shielding layer 3 to disperse electric field stress (power line) at the fracture and ensure that the cable can run reliably.

Specifically, the jacket filler 20 is made of an ointment material, and the optical cable ointment serves as insulation while preventing rainwater from entering the cable by virtue of the water and oil insoluble nature. Meanwhile, the optical fiber is cushioned, and the influence of mechanical forces such as vibration, impact, bending and the like on the optical fiber can be buffered. The filling adhesive 9 is made of waterproof sealant material, the waterproof sealant is single-component butyl rubber waterproof sealant which does not contain aromatic hydrocarbon toxic solvent and belongs to an environment-friendly product. Has good adhesive force to the surfaces of concrete, metal, wood, stone, plastic steel and sunlight plates.

In the invention, the temperature sensing optical fiber 22 is arranged in the core of the cable 1, so that the situation that the temperature sensing optical fiber 22 is irregularly and randomly wound on the outer surface of the copper connecting pipe, the curvature radius of the local temperature sensing optical fiber 22 is too small or the optical fiber is damaged is easily caused, and the temperature sensing optical fiber 22 cannot be damaged by the line butt joint of the cable 1.

The glass fiber product is prepared by arranging the armor belt 15, weaving the armor belt 15 into a fabric with a high-strength and high-elasticity structure by adopting special glass fibers, and then coating a water-curing high molecular compound on the surface of the woven belt. The curing agent has the characteristics of rapid curing in water, simple and convenient operation, wide application range and the like, and the structure formed after curing has high bending strength and tensile strength, is nontoxic, odorless, non-irritant, water-resistant and corrosion-resistant, is convenient to use and carry, can be molded at will, and can enhance the protective performance of the semi-conductive pipe 7; through setting up copper shield net 17, copper shield net 17 has the non-magnetism nature, and the extensibility is good, the effectual characteristics of shielding, and the mesh is even, and density is big, can shield signal and radiation. The copper has the properties of electromagnetic resistance, sound effect resistance and even electron beam shielding; by arranging the stress tube 10, the stress tube 10 achieves the effect of dispersing electric stress on the basis of not damaging the main insulating layer, and is sleeved at the fracture of the copper shielding layer 3 to disperse electric field stress (power line) at the fracture and ensure that the cable can run reliably; the sleeve filling 20 is made of an ointment material, and the optical cable ointment plays an insulating role and prevents rainwater from entering the cable by utilizing the water-oil insoluble property. Meanwhile, the optical fiber is padded, so that the influence of mechanical forces such as vibration, impact, bending and the like on the optical fiber can be buffered; the filling adhesive 9 is made of waterproof sealant material, and the waterproof sealant is single-component butyl rubber waterproof sealant. It contains no toxic solvent of aromatic hydrocarbon, belongs to environment protection product, and has good adhesive force to concrete, metal, wood, stone, plastic steel and sunlight plate surface.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.