CN209401864U - A kind of 35kV--220kV pouring type cable ontology fusion splice - Google Patents

Abstract

The utility model relates to cable connection fields, disclose a kind of 35kV--220kV pouring type cable ontology fusion splice, including two cables, two cables are by the ontology core set gradually from inside to outside, interior semiconductive layer of cloth, inside partly lead shielded layer, insulating layer, insulation screen, partly lead water-blocking buffer layer, aluminium sheath metal layer and oversheath insulating protective layer composition, the naked section of two cables welds to form welding point, semiconductive layer of cloth in recovery is successively enclosed in welding point, shielded layer is partly led in restoring, restore insulating layer, restore insulation screen, water-blocking buffer layer is partly led in recovery, restore aluminium sheath metal layer and restores oversheath insulating protective layer.The utility model 35kV--220kV pouring type cable ontology fusion splice makes the field distribution of the electric field and cable body at cable connector realize the bit distributions such as identical, will not be breakdown, it is ensured that power supply reliability.

Description

A kind of 35kV--220kV pouring type cable ontology fusion splice

Technical field

The utility model relates to cable connection fields, and in particular to a kind of 35kV--220kV pouring type cable ontology welding Connector.

Background technique

With the development of urban modernization, using anxiety, country starts largely to build ground for urban beautification, land resource Under city integrated pipeline, will the original high voltage overhead lines across in city overhead, change cable into and be moved toward underground city composite duct Change.For the development of urban modernization, urban beautification, provide more land resources.

But wherein the accident of 35kV~220kV high-tension cable emerged in operation 90% is plugged between occurring in the cable Position on.Such as Guangdong office plug among 220kV cable within 2015 head fail kindling cause multiloop cable burn, Zhejiang office in 2016 is equally because head fail kindling of plugging among 220kV cable causes multiloop cable to burn.Wherein Two circuit of two circuit 110kV and 20kV, especially in composite duct or tunnel, because of narrow space, the high-tension cable of operation Large number of, high-voltage cable joint is once break down, and coverage is wide, repairing is difficult, causes large-area power-cuts, and the short time is difficult to Power resumption, economic loss are serious.

Summarized according to cable fault analysis, the reason of transition joint of cable accessory leads to cable breakdown predominantly cable it is attached Part connector (silastic material) is between the two different materials from cable insulation (cross-linking polyethylene materials), and there are movable boundaries Face.Interface easily occurs due to micro- air gap, attachment aging, into tide, impurity, cable accessory hot property, many originals such as expand with heat and contract with cold Because causing connector breakdown accident.Meanwhile connector break down moment generate hyperbar occur explosion (joint volume greatly can not wink Between discharge air pressure), high temperature leads to waterproof gasket cement (pitch) ignition of joint, generates toxic gas.

Moreover, traditional ultrahigh pressure joint volume is bigger, occupied space is more.For example the diameter more than ten of 110kV cable is public Point, then the diameter of joint has just reached six or seven ten centimeters.Especially composite duct or tunnel space is narrow, construction cost Height cannot have good economic benefit if limited space cannot be utilized well.

Summary of the invention

The purpose of this utility model provides a kind of 35kV--220kV pouring type cable aiming at the deficiency of above-mentioned technology Ontology fusion splice makes the field distribution of the electric field and cable body at cable connector realize the bit distributions such as identical, Bu Huiyin Many reasons such as electric field distortion, air gap, moisture, aging lead to cable breakdown, it is ensured that the power supply of entire high-tension cable major network is reliable Property.

To achieve the above object, 35kV--220kV pouring type cable ontology fusion splice designed by the utility model, packet Include the first cable body and the second cable body, first cable body is by the first cable body for setting gradually from inside to outside Semiconductive layer of cloth in core, the first cable body partly leads shielded layer, the first cable body insulating layer, in the first cable body One cable body insulation screen, the first cable body partly lead water-blocking buffer layer, the first cable body aluminium sheath metal layer and One cable body oversheath insulating protective layer composition, second cable body is by the second cable body core, the second cable sheet Shielded layer, the second cable body insulating layer, the second cable body insulation screen are partly led in internal semiconductive layer of cloth, the second cable body Cover layer, the second cable body partly leads water-blocking buffer layer, the second cable body aluminium sheath metal layer and the second cable body oversheath Insulating protective layer composition, wherein the effect of each layer is as follows:

The first cable body core and the second cable body core: transmission electric current, electric energy；

Semiconductive layer of cloth in semiconductive layer of cloth and the second cable body in first cable body: the first cable sheet Body core and the second cable body core leasing type round shape type and strand type milliken conductor round shape, each square of core is by very Mostly single copper wire composition, forms the gap on core surface, needs semiconductive layer of cloth winding holding and packet horizontal line wicking surface Gap, prevent in partly lead shielded layer and be seeped into core in squeezing and form point discharge；

Partly led in first cable body in shielded layer and the second cable body and partly lead shielded layer: core be high voltage, High electric field, high current, if insulating layer is directly wrapped on core, the contact surface of core and insulating layer can not be fused closely, with And it is concave-convex it is rough will cause electric field concentration, so online wicking surface is needed to add the shielded layer of semiconductive material in one layer, it with Shielded core equipotential, and and insulating layer have the combination at no interface, to avoid occurring between core and insulating layer Shelf depreciation, this layer partly lead shielded layer to be interior；

The first cable body insulating layer and the second cable body insulating layer: high-voltage cable insulate when selecting material Particularly important, the quality of material is to directly affect the service life of cable operation, and high-voltage cable crosslinked polyethylene afford to be resistant to high pressure Electric field is to maintain dielectric strength and high voltage electrical insulation performance；

The first cable body insulation screen and the second cable body insulation screen: surface of insulating layer and aluminium sheath Metal layer is contacted there are gap, and it is the factor for causing shelf depreciation that the electric field and field strength of surface of insulating layer, which can not be uniformly distributed, In surface of insulating layer plus the shielded layer of one layer of semiconductive material, it and shielded insulating layer vulcanize to form no interface fusion, absolutely The electric field and field strength on edge layer surface are uniformly distributed, and form equipotential with aluminium sheath metal layer to avoid in insulating layer Shelf depreciation occurs between aluminium sheath metal layer, this layer is insulation screen；

First cable body partly leads water-blocking buffer layer and the second cable body partly leads water-blocking buffer layer: partly lead block water it is slow It rushes layer and is wrapped in insulation screen appearance, insulation screen is avoided directly directly to contact with aluminium sheath metal layer, and damage insulation Layer surface is shielded, can be expanded when encountering water or moisture, prevent the infiltration of moisture；

The first cable body aluminium sheath metal layer and the second cable body aluminium sheath metal layer: cable body is protected not It is destroyed by external force, when cable breaks down, facility switching is protected by aluminium sheath metal layer rapid grounding, avoids generating secondary residual Voltage is stayed to cause other injuries, cable generates induced voltage, electric current, electric field, corona in the process of running, insulation screen Resistance is bigger cannot be quickly by induced voltage, electric current, electric field, the evenly dispersed ground connection of corona, it is necessary to which aluminium sheath metal layer makes Induced voltage, electric current, electric field, the corona of whole cable are evenly dispersed, coordinate the sense between threephase cable by grounding apparatus Voltage, electric current, electric field, corona balance rapid grounding are answered, side effect of the cable not by induced voltage, electric current, electric field, corona is protected And influence the quality of cable operation；

The first cable body oversheath insulating protective layer and the second cable body oversheath insulating protective layer: it prevents white Ant destroys the corrosion of cable and environmental wastewater to cable, protects the insulation protection between aluminium sheath metal layer and the earth, avoids Aluminium sheath metal layer and the earth Long Term Contact form circulation, vortex will cause electric cable heating；

The first cable body core has first be exposed in first cable body outside semiconductive layer of cloth Naked section, the second cable body core have second be exposed in second cable body outside semiconductive layer of cloth naked Reveal section, first naked section and the second naked section weld to form welding point；

Semiconductive layer of cloth in recovery is enclosed in the welding point, institute is wrapped up at the both ends of semiconductive layer of cloth in the recovery The first naked section and the second naked section are stated, the both ends of semiconductive layer of cloth are connected to first cable body in the recovery Semiconductive layer of cloth in interior semiconductive layer of cloth and the second cable body；

Semiconductive layer of cloth outer surface is enclosed in recovery and partly leads shielded layer in the recovery, partly leads shielded layer in the recovery Both ends be connected to partly to lead in shielded layer and the second cable body in first cable body and partly lead shielded layer；

Shielded layer outer surface is partly led in the recovery and is enclosed with recovery insulating layer, and the both ends for restoring insulating layer connect respectively It is connected to the first cable body insulating layer and the second cable body insulating layer；

The recovery insulating layer outer surface is enclosed with recovery insulation screen, the both ends difference for restoring insulation screen It is connected to the first cable body insulation screen and the second cable body insulation screen；

The recovery insulation screen outer surface is enclosed with recovery and partly leads water-blocking buffer layer, and the buffering that blocks water partly is led in the recovery The both ends of layer are connected to that first cable body partly leads water-blocking buffer layer and the second cable body partly leads water-blocking buffer layer；

The recovery, which is partly led water-blocking buffer layer outer surface and is enclosed with, restores aluminium sheath metal layer, the recovery aluminium sheath metal The both ends of layer are connected to the first cable body aluminium sheath metal layer and the second cable body aluminium sheath metal layer；

Recovery aluminium sheath metal layer outer surface, which is enclosed with, restores oversheath insulating protective layer, and the recovery oversheath is exhausted The both ends of edge protective layer are connected to the first cable body oversheath insulating protective layer and the second cable body oversheath Insulating protective layer.

Preferably, the recovery oversheath insulating protective layer, the first cable body oversheath insulating protective layer and the second electricity Cable ontology oversheath insulating protective layer outer surface, which is sprayed with, partly leads graphite linings, and cable in operation, restores oversheath insulating protective layer There is delicate induced voltage, partly leads graphite linings and play and greatly contact, the dilute the earth that is put into of induced voltage is zeroed.

Preferably, semiconductive layer of cloth in the recovery, in recovery partly lead shielded layer, restore insulating layer, restore insulation shielding Layer, the length for restoring partly to lead water-blocking buffer layer, restore aluminium sheath metal layer and restore oversheath insulating protective layer are sequentially increased.

Preferably, the first cable body core, the second cable body core, semiconductive layer of cloth in recovery, in recovery Shielded layer is partly led, restores insulating layer, restores insulation screen, restore partly to lead water-blocking buffer layer, restore aluminium sheath metal layer and extensive Multiple oversheath insulating protective layer is in coaxial inner conductor structure.

The utility model compared with prior art, has the advantage that

1, the field distribution of the electric field and cable body at cable connector is made to realize the bit distributions such as identical, it will not be because of electric field Many reasons such as distortion, air gap, moisture, aging lead to cable breakdown, it is ensured that the power supply reliability of entire high-tension cable major network；

2, the cable body restored is as the electric property of former cable；

3, the joint restored does not need to increase waterproof gasket cement；

4, the joint size restored occupies little space as former cable body.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model 35kV--220kV pouring type cable ontology fusion splice；

Fig. 2 is the schematic diagram that fork-join welds conductor connection；

Fig. 3 is the schematic diagram that insulating layer restores

Each part numbers are as follows in figure:

First cable body 1, the first cable body core 11, semiconductive layer of cloth 12, the first cable in the first cable body Shielded layer 13, the first cable body insulating layer 14, the first cable body insulation screen 15, the first cable body are partly led in ontology Partly lead water-blocking buffer layer 16, the first cable body aluminium sheath metal layer 17, the first cable body oversheath insulating protective layer 18, One naked section 19, the second cable body 2, the second cable body core 21, the 22, second electricity of semiconductive layer of cloth in the second cable body Shielded layer 23, the second cable body insulating layer 24, the second cable body insulation screen 25, the second cable sheet are partly led in cable ontology Body partly lead water-blocking buffer layer 26, the second cable body aluminium sheath metal layer 27, the second cable body oversheath insulating protective layer 28, Second naked section 29, welding point 3, restore in semiconductive layer of cloth 32, restore in partly lead shielded layer 33, restore insulating layer 34, is extensive Multiple insulation screen 35 restores partly to lead water-blocking buffer layer 36, restores aluminium sheath metal layer 37, restores oversheath insulating protective layer 38, clean rubber transparent tube 4, polytetrafluoro 5, compression mould 6, crosslinked polyethylene particle and crosslinked polyethylene powder 7, clamping pressure Baffle 8, crosslinking composite die 9, temperature control box 10, welding first layer 31, the welding second layer 311, welding third layer 312, welding the Four layer 313.

Specific embodiment

The utility model is described in further detail in the following with reference to the drawings and specific embodiments.

As shown in Figure 1, the utility model 35kV--220kV pouring type cable ontology fusion splice, including the first cable sheet Body 1 and the second cable body 2, the first cable body 1 are electric by the first cable body core 11, first set gradually from inside to outside Semiconductive layer of cloth 12 in cable ontology partly leads shielded layer 13, the first cable body insulating layer 14, the first cable in the first cable body Ontology insulation screen 15, the first cable body partly lead water-blocking buffer layer 16, the first cable body aluminium sheath metal layer 17 and One cable body oversheath insulating protective layer 18 composition, the second cable body 2 is by the second cable body core 21, the second cable sheet Shielded layer 23, the second cable body insulating layer 24, the second cable body are partly led in internal semiconductive layer of cloth 22, the second cable body Insulation screen 25, the second cable body partly lead water-blocking buffer layer 26, the second cable body aluminium sheath metal layer 27 and the second electricity Cable ontology oversheath insulating protective layer 28 forms；

First cable body core 11 has first be exposed in the first cable body outside semiconductive layer of cloth 12 exposed Section 19, the second cable body core 21 have the second naked section being exposed in the second cable body outside semiconductive layer of cloth 22 29, the first naked section 19 and the welding of the second naked section 29 form welding point 3；

It is enclosed with semiconductive layer of cloth 32 in recovery in welding point 3, restores the both ends package first of interior semiconductive layer of cloth 32 Naked section 19 and the second naked section 29, the both ends for restoring interior semiconductive layer of cloth 32 are connected to semiconductive in the first cable body Semiconductive layer of cloth 22 in layer of cloth 12 and the second cable body；

32 outer surface of semiconductive layer of cloth, which is enclosed in recovery, in restoring partly leads shielded layer 33, partly leads shielded layer 33 in recovery Both ends, which are connected in the first cable body partly to lead in shielded layer 13 and the second cable body, partly leads shielded layer 23；

33 outer surface of shielded layer is partly led in restoring and is enclosed with and restores insulating layer 34, and the both ends for restoring insulating layer 34 are separately connected In the first cable body insulating layer 14 and the second cable body insulating layer 24；

Restore 34 outer surface of insulating layer and be enclosed with recovery insulation screen 35, the both ends for restoring insulation screen 35 connect respectively It is connected to the first cable body insulation screen 15 and the second cable body insulation screen 25；

Recovery 35 outer surface of insulation screen is enclosed with recovery and partly leads water-blocking buffer layer 36, and water-blocking buffer layer 36 is partly led in recovery Both ends be connected to that the first cable body partly leads water-blocking buffer layer 16 and the second cable body partly leads water-blocking buffer layer 26；

Recovery, which is partly led 36 outer surface of water-blocking buffer layer and is enclosed with, restores aluminium sheath metal layer 37, restores aluminium sheath metal layer 37 Both ends be connected to the first cable body aluminium sheath metal layer 17 and the second cable body aluminium sheath metal layer 27；

Restore 37 outer surface of aluminium sheath metal layer and be enclosed with recovery oversheath insulating protective layer 38, restores oversheath insulation and protect The both ends of sheath 38 are connected to the first cable body oversheath insulating protective layer 18 and the insulation of the second cable body oversheath Protective layer 28.

In addition, restoring oversheath insulating protective layer 38, the first cable body oversheath insulating protective layer 18 and the second cable 28 outer surface of ontology oversheath insulating protective layer, which is sprayed with, partly leads graphite linings.

In the present embodiment, shielded layer 33 is partly led in the interior semiconductive layer of cloth 32 of recovery, recovery, restores insulating layer 34, recovery absolutely Edge shielded layer 35, recovery partly lead water-blocking buffer layer 36, restore aluminium sheath metal layer 37 and restore oversheath insulating protective layer 38 Length is sequentially increased, the first cable body core 11, the second cable body core 21, restore in semiconductive layer of cloth 32, restore in Shielded layer 33 is partly led, restores insulating layer 34, restores insulation screen 35, restore partly to lead water-blocking buffer layer 36, restore aluminium sheath gold Belonging to layer 37 and restoring oversheath insulating protective layer 38 is in coaxial inner conductor structure.

The production method of the present embodiment, includes the following steps:

A) cable stripping: the first cable body oversheath insulating protective layer 18, the first cable of the first cable body of stripping 1 Ontology aluminium sheath metal layer 17, the first cable body partly lead water-blocking buffer layer 16 and the first cable body insulation screen 15 obtains First bare exposed conductor, and exploiting is the first insulation pencil stub, exposes and partly leads shielded layer 13, the first cable in the first cable body Semiconductive cloth and the first naked section 19 in ontology, the second cable body oversheath insulating protective layer of the second cable body of stripping 2 28, the second cable body aluminium sheath metal layer 27, the second cable body partly lead water-blocking buffer layer 26 and the insulation of the second cable body Shielded layer 25 obtains the second bare exposed conductor, and exploiting is the second insulation pencil stub, exposes and partly leads shielding in the second cable body Semiconductive cloth and the second naked section 29 in the 23, second cable body of layer；

B it) is inserted in auxiliary material: being inserted in pyrocondensation complex repairation pipe, clean 4 and of rubber transparent tube on the first cable body 1 Molded rubber pipe is partly led, lead sheath pipe and insulation shielding molded rubber pipe are inserted on the second cable body 2；

C) fork-join weldering conductor connection: as shown in Fig. 2, using silver solder for welding material, by the first cable body core 11 With 4 layers of conductor thread core welding of size point of the second cable body core 21, in the first cable body on semiconductive layer of cloth 12, make It is loose with holding folder tightly for the locking of the first naked section 19 and preventing, then by the first layer separation of the first cable body core 11 break into two with one's hands to It holds tightly at folder, the conductor thread core locking for holding folder 11 inner layer of the first cable body core tightly is reused, then by the first cable body The separation of 11 second layer of core is broken into two with one's hands to holding tightly at folder, and it is 4 layers that such step, which divides the first cable body core 11, successively, and most The conductor thread core of inner layer integrally cuts off 30mm, on the second cable body core 21, is locked the second naked section 29 using folder is held tightly It tightly prevents from loosely, then cutting off 21 redundance of the second cable body core, reusing holding and be clipped in the second cable body line It is fixed below 21 first layer conductor thread core incision position of core, then second layer conductor thread core redundance is cut off, is walked so successively Suddenly the second cable body core 21 is divided for 4 layers of formation step ladder type shape, then one layer of conductor thread core, will toward external welding in most First cable body and the second cable body straighten, so that in a level value between conductor thread core, by the second cable body line The conductor thread core of core 21 closely 11 inner layer conductor thread core of the first cable body core reserves between the conductor thread core of both ends between 5mm Gap is heated conductor thread core with welding machine, makes silver solder that both ends conductor thread core is melted integrally connected, and welding is dried with blower drops Temperature, it is with belt sander that the polishing of welding position the raised area is isometrical, when restoring layer conductor thread core second from the bottom connection, by the first cable 1 second from the bottom layer of conductor thread core of ontology, which is broken, directly to be laid flat back, and tightens straightening, the inverse of the first cable body 1 using folder is held tightly Second layer conductor thread core is docked with the layer conductor thread core second from the bottom of the second cable body 2, and centre retains the gap of 5mm, by the The layer conductor thread core second from the bottom of one cable body 1 grows part excision, heats conductor with welding machine, leads silver solder by both ends Body core melt integrally connected, after welding with blower dry cool down, with belt sander by welding position the raised area polish isometrical, land For continuous step until the second layer, the welding of first layer conductor thread core are completed, welding first layer 31, the welding second layer 311, weldering are completed in welding Third layer 312, the 4th layer 313 of welding are connect, the whole nothing of the first cable body core 11 and the second cable body core 21 is formed The isometrical connection in interface；

D) interior semiconductive layer of cloth restores: it is exposed to be wrapped in the first naked section 19 and second using fiber semiconductive cloth half lap scarf joint In section 29, semiconductive layer of cloth 32 in restoring is formed, the both ends of semiconductive layer of cloth 32 are connected to the first cable body in recovery Semiconductive layer of cloth 22 in interior semiconductive layer of cloth 12 and the second cable body, the winding of fiber semiconductive cloth is with a thickness of 1mm；

E shielded layer recovery is partly led in): using semiconductive polyethylene particle for material, by factory by semiconductive polyethylene Particle, which is processed into semi-finished product, partly leads vulcanization band, partly leads screen for partly being led in shielded layer 13 and the second cable body in the first cable body It covers layer 23 to be cleaned up with alcohol paper, will partly lead vulcanization band semiconductive layer of cloth in the first cable body in a manner of half lap scarf joint 12 and second on semiconductive layer of cloth 22 in cable body, gradually semiconductive layer of cloth 12 and the second cable sheet in the first cable body The slope overlap joint of semiconductive layer of cloth 22 in vivo, forms in restoring and partly leads shielded layer 33, partly lead shielded layer 33 in recovery and wind thickness Degree is 2mm, partly leads shielded layer 33 using partly leading in the covering recovery of molded rubber pipe, and be overlapped on the first insulation pencil stub and second It insulate below pencil stub, wraps up one layer of tinfoil on the surface for partly leading molded rubber pipe, then wrap up three layers of high temperature resistant Teflon again Adhesive plaster covers tinfoil, and temperature control probe is placed on Teflon blanket surface, two layers is wrapped up using aluminium foil, is wrapped with heating wire, then wrap It wraps up in two layers of aluminium foil to cover heating wire, be controlled by intelligent temperature control, 60 degree of set temperature, constant temperature 5 divides after reaching set temperature Clock resets 90 degree of temperature, reaches after set temperature constant temperature 15 minutes, cuts off the power after reaching constant temperature time, natural cooling 5 is divided Room temperature is down in the blowing of Zhong Houyong air-cooler, is dismantled aluminium foil layer, heating wire, Tie Folong adhesive plaster, tinfoil respectively and is partly led molded rubber Pipe, restore good using belt sander polishing and restore in partly lead shielded layer 33, and with shielded layer 13 and the are partly led in the first cable body The smooth transition of shielded layer 23 is partly led in two cable bodies, using polishing abrasive belt will restore in partly lead shielded layer 33 and polish round and smooth, shape At partly leading shielded layer 33 in restoring, partly lead in shielded layer 13 and the second cable body in the first cable body and partly lead shielded layer 23 1 Body connection；

F) insulating layer restores: as shown in figure 3, by pulling the insulation pencil stub of belt sanding first and the second insulation pencil stub Slope at, the abrasive band trace at slope is scraped off with sheet glass, until slope is smooth, cleans dust with alcohol paper, Clean rubber transparent tube 4 is moved on to above the first insulation pencil stub on the first cable body insulating layer 14 and the second insulation pencil stub Among the second cable body insulating layer 24 of side, using polytetrafluoro 5 by clean 4 both ends fixing seal of rubber transparent tube, dust is prevented Into, then the half of compression mould 6 is placed below clean rubber transparent tube 4 hold it is placed in the middle, in clean rubber transparent tube 4 Top is equipped with feed inlet, and crosslinked polyethylene particle and crosslinked polyethylene powder 7 are entered pressing up to filling from feed inlet casting It is put into the clamping pressure baffle 8 processed on the inside of the both sides of 6 this half of contracting mold, then the other half of compression mould 6 is closed, lead to It crosses bolt to tighten compression mould 6, fits compression mould 6 together, it is very close to each other between upper/lower die, pass through temperature control intelligent meter Control, 100 degree of set temperature, connecting with the mains makes the heating tube fever heating of 6 the inside of compression mould, reaches thermostatic 30 and divides Clock makes crosslinked polyethylene particle and crosslinked polyethylene powder 7 form new crosslinked polyethylene insulation material in soft colloidal state, then It cuts off the power, carries out cooling to 80 degree using blower, remove compression mould 6 and clean rubber transparent tube 4, installation crosslinking compound die Tool 9 is tightened crosslinking composite die 9 using bolt, is controlled by temperature control intelligent meter, 140 degree of set temperature, connecting with the mains makes to be crosslinked The heating tube of the inside of composite die 9 is generated heat heating, the heat transfer of crosslinking composite die 9 to the first cable body insulating layer 14 With the second cable body insulating layer 24, make new crosslinked polyethylene insulation material and the first cable body insulating layer 14, the second cable Shielded layer 33 melt binding one is partly led in ontology insulating layer 24, recovery, realizes that insulating layer restores to reach temperature without interface connection Constant temperature completion in 60 minutes crosslinking, cuts off power supply natural cooling 60 minutes, crosslinking composite die 9 is removed, so that new crosslinked polyethylene Insulating materials and the first cable body insulating layer 14, the second cable body insulating layer 24, it is exhausted that melt binding has been integrally formed recovery Edge layer 34；

G) sizing is exploited in insulation: 34 the raised area of recovery insulating layer is insulated using insulation sharpener and exploits a part, so that Restore 34 to the first cable body insulating layer 14 of insulating layer and the thick 10mm out of the second cable body insulating layer 24, insulation is used to polish Machine is arc-shaped by recovery 34 both ends the raised area of insulating layer polishing smooth transition, and middle section insulation is round and smooth with abrasive band polishing, makes Restore among insulating layer 34 than the first cable body insulating layer 14 and the thick 8mm of the second cable body insulating layer 24, both ends and first 24 smooth transition of cable body insulating layer 14 and the second cable body insulating layer；

H) insulation screen restores: by the first cable body insulation screen 15 and the second cable body insulation screen 25 Polishing and recovery 34 smooth transition of insulating layer, no step, and insulating layer 34 and the first cable sheet will be restored using 1000 mesh abrasive bands Body insulation screen 15 and the second cable body insulation screen 25 polish it is round and smooth, will partly lead vulcanization band it is wrapped in a manner of half lap scarf joint The thickness 2mm on restoring insulating layer 34, and it is overlapped on the first cable body insulation screen 15 and the second cable body insulation screen 5mm long on layer 25 is covered, molded rubber pipe will be partly led and be covered on and partly lead vulcanization and take, in the surface package one for partly leading molded rubber pipe Layer tinfoil, then wraps up three layers of high temperature resistant Teflon adhesive plaster again, and temperature control probe is placed on Teflon blanket surface, reuses aluminium foil Two layers of package, is wrapped with heating wire, wraps up two layers of aluminium foil and heating wire is covered, controlled by intelligent temperature control, and 80 degree of set temperature, Constant temperature 10 minutes after arrival set temperature, 90 degree of temperature are reset, so that partly leading vulcanization band and restoring insulating layer 34, the first cable 25 melt binding of ontology insulation screen 15 and the second cable body insulation screen forms and restores insulation screen 35, realizes Restore to connect between insulating layer 34 and the first cable body insulation screen 15 and the second cable body insulation screen 25 without interface It connects, reaches after set temperature constant temperature 30 minutes, cut off the power after reaching constant temperature time, natural cooling is dried with blower after twenty minutes It is down to formed at normal temp, aluminium foil is dismantled respectively, heating wire, Teflon adhesive plaster, tinfoil, partly leads molded rubber pipe, complete insulation shielding The recovery of layer；

I it) partly leads water-blocking buffer layer recovery: partly leading water-blocking buffer layer 16 and the second cable body using with the first cable body The identical material of water-blocking buffer layer 26 is partly led, is wrapped in and is restored on insulation screen 35 in a manner of half lap scarf joint, winds thickness 5mm, It is prevented loosely using PVC adhesive plaster looping fracture；

J) aluminium sheath metal layer restores: use lead sheath pipe for recovery metal layer material, the sheet lead of lead sheath pipe with a thickness of 2mm, internal diameter 70mm, length 1200m will pack into advance the lead sheath pipe on the second cable body 2, snap into the first cable At 17 100mm of the first cable body aluminium sheath metal layer on ontology 2, lead sheath pipe grows part using handsaw according to breaking, and makes Removed with angle grinder incision, so that lead sheath pipe is uniformly overlapped on the first cable body aluminium sheath metal layer 17 and the second cable sheet On body aluminium sheath metal layer 27, using steel brush the first cable body aluminium sheath metal layer 17 and the second cable body aluminium sheath gold It is coarse to belong to the polishing of 27 surface of layer, is then heated burnishing part using firelock, and plates one layer using aluminium welding wire, then seal using leads Scorification leads is sealed the fracture both ends to lead sheath pipe using cotton and has plated aluminium welding wire by lead using firelock leads scorification It is molten by the heating leads of firelock on first cable body aluminium sheath metal layer 17 and the second cable body aluminium sheath metal layer 27 Melt, the first cable body aluminium sheath metal layer 17 and the fusion of the second cable body aluminium sheath metal layer 27 and lead sheath pipe are connected It connects, is formed and restore aluminium sheath metal layer 37；

K) oversheath insulating protective layer restores: using pyrocondensation complex repairation pipe for material, pyrocondensation complex repairation length of tube is 1200mm, with a thickness of 6mm, internal diameter 90mm, using sander by the first cable body oversheath insulating protective layer 18 and second Cable body oversheath insulating protective layer 28 polish the slope of 5mm long, will pack into the pyrocondensation on the first cable body 1 in advance Complex repairation pipe snaps into the first cable body oversheath insulating protective layer 18 and the second cable body oversheath insulating protective layer On 28 slope, using firelock by pyrocondensation complex repairation pipe heat contraction with the first cable body oversheath insulating protective layer 18 and Second cable body oversheath insulating protective layer 28 melts bonding together, is formed and restores oversheath insulating protective layer 38；

L it) partly leads graphite linings recovery: leading graphite in 38 surface of the recovery oversheath insulating protective layer spraying one and half restored Paint, is dried with heat gun, completes the recovery for partly leading graphite linings.

Wherein, in step A), 18 stripping 600mm of the first cable body oversheath insulating protective layer, the second cable body Oversheath insulating protective layer 28 stripping 600mm, 17 stripping 600mm of the first cable body aluminium sheath metal layer, the second cable body 27 stripping 600mm of aluminium sheath metal layer, the first cable body partly lead 16 stripping 500mm of water-blocking buffer layer, the second cable body half Lead 26 stripping 500mm of water-blocking buffer layer, 15 stripping 100mm of the first cable body insulation screen, the second cable body insulation screen Cover 25 stripping 50mm of layer, the length of the first bare exposed conductor and the second bare exposed conductor is 40mm, and the first insulation pencil stub and second is absolutely The length of edge pencil stub is 70mm, exposes partly to lead in the first cable body in shielded layer 13 and the second cable body and partly leads shielding The length of layer 23 is 40mm, and the length for exposing semiconductive cloth in semiconductive cloth and the second cable body in the first cable body is 50mm。

In the present embodiment, cable stripping includes the following steps:

A) electric hydaulic swage is used, the first cable body 1 and the alignment of 2 infall of the second cable body are put side by side Directly, with mark in mark stroke among infall, electricity consumption Moving plate is crouched the first cable body 1 and the second cable body 2 is neat Cutting；

B) it is inwardly measured from the fracture of the first cable body 1 and the second cable body 2, the insulation of the first cable body oversheath Protective layer 18 stripping 600mm, 28 stripping 600mm of the second cable body oversheath insulating protective layer；

C) it is inwardly measured from the fracture of the first cable body 1 and the second cable body 2, the first cable body aluminium sheath metal 17 600mm of layer, 27 600mm of the second cable body aluminium sheath metal layer is put signs on marking pen, using crescent moon tulwar, Gu It is scheduled on the position indicated on mark, mixes up the depth of blade, revolves nature disconnection of turning around；

D) inwardly measured from the fracture of the first cable body 1 and the second cable body 2, the first cable body partly lead block water it is slow 16 stripping 500mm of layer is rushed, the second cable body partly leads 26 stripping 500mm of water-blocking buffer layer；

E) it is inwardly measured from the fracture of the first cable body 1 and the second cable body 2, the first cable body insulation screen 15100mm, the second cable body insulation screen 2550mm, puts signs on, and will partly lead dedicated stripping knife and be fixed on the first cable On ontology 1 and the second cable body 2, and mix up from the incision position of the first cable body 1 and the second cable body 2 depth of the edge of a knife Degree, does not hurt the first cable body insulating layer 14 and the second cable body insulating layer 24, and rotation partly leads dedicated stripping knife, makes first Cable body insulation screen 15 and the first cable body insulating layer 14 are detached from, the second cable body insulation screen 25 and second Cable body insulating layer 24 is detached from；

F) 40mm is inwardly measured from the fracture of the first cable body 1 and the second cable body 2, cable insulation stripping knife is consolidated It is scheduled on the first cable body 1 and the second cable body 2, blade is adjusted to the first bare exposed conductor and the second bare exposed conductor conductor table Face, rotatable cable insulation stripping knife, is detached from the first cable body insulating layer 14 and the second cable body insulating layer 24；

G) 60mm is inwardly measured from the fracture of the first cable body 1 and the second cable body 2, insulation stripping knife is fixed on On first cable body 1 and the second cable body 2, blade is adjusted to partly to lead shielded layer 13 and the second cable in the first cable body The rotation of 23 surface of shielded layer is partly led in ontology, makes partly to lead shielded layer 13 in the first cable body insulating layer 14 and the first cable body It is detached from, the disengaging of shielded layer 23 is partly led in the second cable body insulating layer 24 and the second cable body；

H) it is partly led in the first cable body and exposes semiconductive layer of cloth in the first cable body under shielded layer 13 1250mm partly leads in the second cable body and exposes semiconductive layer of cloth in the second cable body under shielded layer 23 2250mm；

I) 70mm is inwardly measured from the fracture of the first cable body 1 and the second cable body 2, insulation stripping knife is fixed on On first cable body 1 and the second cable body 2, blade is adjusted to partly to lead shielded layer 13 and the second cable in the first cable body The rotation of 23 surface of shielded layer is partly led in ontology, and blade is just improved into 5mm until forming the first of pencil head shapes for each revolution Insulate pencil stub and the second insulation pencil stub；

J) the tool marks grinding process of the first insulation pencil stub and the second insulation pencil stub is made into the first insulation lead using abrasive band Nib and the insulator interface of the second insulation pencil stub are smooth, reuse abrasive band for the first insulation pencil stub and the second insulation pencil stub Insulating surface polishing it is clean, reusing will partly be led in shielded layer 13 and the second cable body with hand sanding paper in the first cable body The insulation processing for partly leading 23 surface of shielded layer is clean, will partly lead shielded layer 13 and the second cable in the first cable body using glass The slope that shielded layer 23 scrapes a long 10mm is partly led in ontology.

In the above-described embodiments, it is heated using temperature control box 10.

The utility model 35kV--220kV pouring type cable ontology fusion splice and preparation method thereof makes at cable connector The field distribution of electric field and cable body realizes the bit distributions such as identical, will not be all because of electric field distortion, air gap, moisture, aging etc. More reasons lead to cable breakdown, it is ensured that the power supply reliability of entire high-tension cable major network；And cable body and the original electricity restored The electric property of cable is the same；The joint restored does not need to increase waterproof gasket cement；Joint size and the original electricity restored Cable ontology is the same, occupies little space.

Claims (4)

1. a kind of 35kV--220kV pouring type cable ontology fusion splice, including the first cable body (1) and the second cable body (2), it is characterised in that: first cable body (1) by set gradually from inside to outside the first cable body core (11), Semiconductive layer of cloth (12) in one cable body partly leads shielded layer (13), the first cable body insulating layer in the first cable body (14), the first cable body insulation screen (15), the first cable body partly lead water-blocking buffer layer (16), the first cable body aluminium Sheath metal layer (17) and the first cable body oversheath insulating protective layer (18) composition, second cable body (2) is by the Semiconductive layer of cloth (22) in two cable body cores (21), the second cable body, partly led in the second cable body shielded layer (23), Second cable body insulating layer (24), the second cable body insulation screen (25), the second cable body partly lead water-blocking buffer layer (26), the second cable body aluminium sheath metal layer (27) and the second cable body oversheath insulating protective layer (28) composition；

The first cable body core (11), which has, is exposed to semiconductive layer of cloth (12) outside in first cable body First naked section (19), the second cable body core (21), which has, is exposed to semiconductive layer of cloth in second cable body (22) external the second naked section (29), first naked section (19) and the second naked section (29) welding form welding point (3)；

Semiconductive layer of cloth (32) in recovery is enclosed on the welding point (3), the two of semiconductive layer of cloth (32) in the recovery First naked section (19) and the second naked section (29) are wrapped up in end, and the both ends of semiconductive layer of cloth (32) connect respectively in the recovery Semiconductive layer of cloth (22) in semiconductive layer of cloth (12) and the second cable body is connected in first cable body；

Semiconductive layer of cloth (32) outer surface is enclosed in recovery and partly leads shielded layer (33) in the recovery, partly leads screen in the recovery The both ends for covering layer (33) are connected to partly to lead in shielded layer (13) and the second cable body in first cable body and partly lead Shielded layer (23)；

Shielded layer (33) outer surface is partly led in the recovery and is enclosed with restores insulating layer (34), the two of recovery insulating layer (34) End is connected to the first cable body insulating layer (14) and the second cable body insulating layer (24)；

Recovery insulating layer (34) outer surface, which is enclosed with, restores insulation screen (35), recovery insulation screen (35) Both ends are connected to the first cable body insulation screen (15) and the second cable body insulation screen (25)；

Recovery insulation screen (35) outer surface is enclosed with recovery and partly leads water-blocking buffer layer (36), and the recovery, which is partly led, to block water The both ends of buffer layer (36) are connected to first cable body and partly lead water-blocking buffer layer (16) and the second cable body half Lead water-blocking buffer layer (26)；

The recovery, which is partly led water-blocking buffer layer (36) outer surface and is enclosed with, restores aluminium sheath metal layer (37), the recovery aluminium sheath The both ends of metal layer (37) are connected to the first cable body aluminium sheath metal layer (17) and the second cable body aluminium shield It covers metal layer (27)；

Recovery aluminium sheath metal layer (37) outer surface, which is enclosed with, restores oversheath insulating protective layer (38), protects outside the recovery The both ends of set insulating protective layer (38) are connected to the first cable body oversheath insulating protective layer (18) and the second electricity Cable ontology oversheath insulating protective layer (28).

2. 35kV--220kV pouring type cable ontology fusion splice according to claim 1, it is characterised in that: the recovery Oversheath insulating protective layer (38), the first cable body oversheath insulating protective layer (18) and the insulation of the second cable body oversheath Protective layer (28) outer surface, which is sprayed with, partly leads graphite linings.

3. 35kV--220kV pouring type cable ontology fusion splice according to claim 1, it is characterised in that: the recovery Shielded layer (33) is partly led in interior semiconductive layer of cloth (32), recovery, is restored insulating layer (34), is restored insulation screen (35), restores The length for partly leading water-blocking buffer layer (36), recovery aluminium sheath metal layer (37) and recovery oversheath insulating protective layer (38) successively increases Greatly.

4. 35kV--220kV pouring type cable ontology fusion splice according to claim 1, it is characterised in that: described first Cable body core (11), the second cable body core (21), restore in semiconductive layer of cloth (32), restore in partly lead shielded layer (33), restore insulating layer (34), restore insulation screen (35), restore partly to lead water-blocking buffer layer (36), restore aluminium sheath metal Layer (37) and recovery oversheath insulating protective layer (38) are in coaxial inner conductor structure.