CN103986112B - The connecting structure of power cable and insulating element - Google Patents
The connecting structure of power cable and insulating element Download PDFInfo
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- CN103986112B CN103986112B CN201410049146.5A CN201410049146A CN103986112B CN 103986112 B CN103986112 B CN 103986112B CN 201410049146 A CN201410049146 A CN 201410049146A CN 103986112 B CN103986112 B CN 103986112B
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Abstract
The present invention relates to the connecting structure of power cable and insulating element.Insulating component (19) is the component of substantially tubular, is made up of main part (41), copper pipe (15b), conductor (22) etc..Main part (41) is for example resinous insulator.One end of copper pipe (15b) is arranged in the way of imbedding the inside of main part (41), and main part (41) is formed as one with copper pipe (15b).At the one of the outer peripheral face at the position that copper pipe (15b) is arranged in the way of imbedding main part (41), using bonded conductor (22) such as welding.Conductor (22) bends in the inside of main part (41), projects from the end face of main part (41).That is, conductor (22) is radially oriented joint from the outer peripheral face of copper pipe (15b), and bends about 90 ° in the inside of main part (41) towards the projected direction of copper pipe (15b).Therefore, the end of conductor (22) is axial, i.e. prominent with the projected direction identical direction of the copper pipe (15b) with respect to main part (41) to the power cable (3b) connecting.
Description
Technical field
In particular, the present invention relates to a kind of preferred connecting structure of the power cable as underground transmission line and use
Insulating component in this construction.
Background technology
In there is the power cable of metal screen layer connecting portion each other, draw earth lead, be separately grounded, or
Person, is connected by jumper between threephase cable.In such connecting structure, using insulating component so that connect power cable it
Between be not turned on (such as patent documentation 1, patent documentation 2) between mutual screen layer.
Prior art literature
Patent documentation 1：Japanese Patent Publication 01-92759 publication；
Patent documentation 2：Japanese Unexamined Patent Publication 08-149679 publication.
Figure 10 is the figure representing existing power cable connecting structure 100 each other.In connecting structure 100, electric power electricity
Connect between the end of cable 103a, 103b.Power cable 103a, 103b internally have conductor portion 105, in conductor portion 105
Outer circumferential side is provided with insulation division 107, semiconductive portion 109, aluminum corrugated tube 111, external jacket 113 from internal sequence.
Connected using conductor coupling portion 106 between the end of conductor portion 105.Outside connecting portion between conductor portion 105
Week is provided with the rubber component 137 with specific thickness in order to ensure insulating properties.In addition, being set in the way of covering rubber component 137
Put the copper pipe 115a as metal tube.
Copper pipe 115a is configured in the way of end with aluminum corrugated tube 111 conducting of a power cable 103a.In addition, another
The aluminum corrugated tube 111 of the power cable 103b of, is configured with copper pipe 115b in the way of the conducting of end.Additionally, copper pipe 115a,
115b to be carried out using such as welding with the connection of each aluminum corrugated tube 111, is wound around water blocking tape etc. in periphery.
Copper pipe 115a, 115b each relative to end be provided with flange part 117a, 117b.Flange part 117a, 117b divide
Do not engage with the both ends of insulating component 119.That is, copper pipe 115a, 115b is engaged by insulating component 119, not mutual conduction.This
Outward, it is provided with, on the composition surface of flange part 117a, 117b and insulating component 119, the o-ring omitting diagram in order to ensure water proofing property
Deng.
It is respectively configured screen in the respective aluminum corrugated tube 111 of power cable 103a, 103b and the periphery in semiconductive portion 109
Cover layer 135a, a 135b.Screen layer 135a, 135b are formed respectively to the periphery of rubber component 137.The rubber of screen layer 135a, 135b
The end of glue component 137 side separates, and is set to trimming portion.That is, screen layer 135a, 135b is not turned on each other.Additionally, above-mentioned insulation structure
Part 119 counter conductor connecting portion 106, is configured at the side that the detached part of screen layer 135a, 135b (trimming portion) is located at.
Lid 131 is set in copper pipe 115a, can internally flow into waterproofing admixture from the hole of setting lid 131.In addition, in copper
In the outer peripheral face of pipe 115a, 115b, by arranging portion of terminal 121a, 121b in the way of radially projecting.Portion of terminal 121a, 121b is
The component of such as tabular, has the shape that can connect connecting wire etc..
It is connected to the lead-out wire 127 of the inner conductor as coaxial cable 123 in portion of terminal 121a, 121b and make
Lead-out wire 125 for external conductor.That is, copper pipe 115a, 115b and lead-out wire 127 and lead-out wire 125 are respectively turned on.Lead-out wire
127 and lead-out wire 125 outside enforcement grounding in connecting structure 100 as described above etc..
In such connecting structure, as the lead-out wire 127 of line drawn and lead-out wire 125 and portion of terminal 121a,
Side from the connecting portion of 121b to connecting structure radially projecting.Therefore, the overall external diameter of connecting structure becomes big.In addition, connecting
The profile constructing is complicated it is difficult to utilize collapsible tube etc. to cover the periphery entirety of connecting structure or be somebody's turn to do using the covering such as water blocking tape
Connecting portion.Accordingly, there exist following problem：Need using waterproof clay etc., operation is loaded down with trivial details.In addition, in such complicated shape
Under water-proofing treatment be also possible to lead to the reduction of water-proof function due to working vessels etc..
On the other hand, exist and cover the overall situation of connecting portion using seal box (coffin box) 129.Seal box
After 129 cover entirety, can internally flow into waterproofing compound from lid 133.As long as using such seal box it becomes possible to improve
The overall water proofing property of connecting structure.
But, when using seal box 129, there is a problem of that connecting structure maximizes further.Additionally, there are and ask as follows
Topic：Also need to the substantial amounts of waterproofing compound flowing in seal box 129.
In addition, in existing connecting structure 100, needing to meet two copper pipes 115a, 115b respectively with insulating component 119
Close.In addition, it is necessary to the opposite face in flange part 117a, 117b and insulating component 119 is respectively configured o-ring etc. to carry out at waterproof
Reason.Accordingly, it would be desirable to for the man-hour of joining process, further, since construction error etc., lead to the immersion route of water to increase, thus
The risk to water proofing property is made to become big.
In addition, respective connecting portion is needed with the groove processing carrying out for o-ring, furthermore, it is desirable to be used for configuring o-ring or
Tighten the working place of bolt.Accordingly, it would be desirable to the junction surface of bolt etc. is configured in the more periphery of the radial direction than joint construction
Side.Accordingly, there exist the problem in the big footpath of joint construction.
In addition, existing insulating component in order to flange part bolted joints, need internally to imbed lasso.Accordingly, there exist
The problem that the manufacturing cost of insulating component uprises.
Further, since lead-out wire 127 is connected with copper pipe 115a, therefore, lead-out wire 127 and copper pipe 115a are same current potential.Separately
On the one hand, two copper pipes 115a, 115b are different current potentials.Therefore, with the side of the peripheral part across two copper pipes 115a, 115b
The lead-out wire 127 of formula setting needs to obtain between copper pipe 115b and connected lead-out wire 125 and sufficiently insulate.For
Obtain this insulation, in existing connecting structure, need radially and long dimensional directions configure current potential not with being sufficiently spaced from
Same lead-out wire 127 and copper pipe 115b etc..Accordingly, there exist the problem of connecting structure maximization.
Content of the invention
The present invention be in view of such problem and complete, its object is to：There is provided attended operation excellent, water proofing property with
And shield also excellent connecting structure of power cable of interlayer pulse behaviors etc..
For solving the scheme of problem
In order to reach for above-mentioned purpose, the first invention for power cable connecting structure it is characterised in that possessing：
First metal tube, its screen layer conducting with a power cable；
Second metal tube, its screen layer conducting with another power cable；
First lead-out wire, it is turned on above-mentioned first metal tube；
Second lead-out wire, it is turned on above-mentioned second metal tube；And
Insulating component, it has the cylindrical body part arranging in the way of the end embedment by above-mentioned second metal tube,
Above-mentioned first metal tube covers power cable connecting portion each other, around above-mentioned another power cable, with
Above-mentioned insulating component directs or through connecting elements and connects, and makes above-mentioned first metal tube and above-mentioned the using above-mentioned insulating component
Two metal tube insulations.
According to the first invention, the end due to the second metal tube is arranged in the way of the main part being embedded in insulating component,
Second metal tube and main part form as one, therefore, there is no need to engage the operation of the second metal tube and main part it is not required that
Engage required bolt etc..Further, since main part is integrally formed with the second metal tubular, so in the second metal tube and main body
Do not need between portion to carry out the water-proofing treatment of o-ring etc., therefore, it is possible to reduce the water of operational error etc. with water-proofing treatment
Immersion route, obtains higher water proofing property.
Expect the above-mentioned second metal tube setting conductor at the position arranging in the way of being embedded in aforementioned body portion, above-mentioned
Conductor bends in the inside in aforementioned body portion, dashes forward in the direction of the power cable to above-mentioned another side for the end face from aforementioned body portion
Go out, be connected with above-mentioned second lead-out wire.
So, compared with the existing construction connection conductor such as terminal base being set with the outer peripheral face in the second metal tube, can
Reduce the concavo-convex of connecting structure.Therefore, water-proofing treatment afterwards is simple.Further, since conductor is axially projecting to connecting structure,
Accordingly it is also possible to sleeve by tubular etc. is used for the connection of this conductor and lead-out wire, attended operation is also simple.
Expect the periphery in aforementioned body portion, to separate rule with respect to above-mentioned conductor on the circumferencial direction in aforementioned body portion
The mode of set a distance forms notch, is connected with the portion of terminal of terminal component in above-mentioned first metal tube, above-mentioned terminal component from
Above-mentioned first metal tube side passes through above-mentioned notch, draws in above-mentioned second metal tube side, is connected with above-mentioned first lead-out wire.
In such manner, it is possible to the connecting portion configuration of the first lead-out wire and terminal component is not configured in the periphery of the second metal tube
In the first metal tube side.That is, by the connecting portion of lead-out wire and terminal component is set to the outer of the second less metal tube of external diameter
Week rather than the peripheral part of larger the first metal tube of external diameter, can make connecting structure integral miniaturization.Further, since terminal structure
Part configures the notch in insulating component, so external diameter will not become big due to terminal component.
Expect the external surface shape of the above-mentioned terminal component shape from portion of terminal side to the shape with the first lead-out wire connecting side
The part of shape change, positioned at the peripheral part of above-mentioned first metal tube or above-mentioned connecting elements.
Generally, when configuring the part of external surface shape change of terminal component in the periphery of insulating component, in atmosphere
Form uneven electric field concentrated area, become the key factor making insulating properties reduce.In this regard, in the present invention, can be by
The change point configuration of the external surface shape of above-mentioned terminal component is in the peripheral part of the first metal tube or the first metal tube and insulation
The periphery of the connecting elements of component.By in such manner, it is possible to relax the formation of the uneven electric field concentrated area of in the air.This
Sample, in the present invention, by by the configuration of the change point of the section shape of terminal component with the idiostatic conductor of terminal component
Peripheral part is it can be ensured that higher shielding interlayer pulse behaviors.
Expect above-mentioned terminal component portion of terminal be shaped as tabular, being shaped as of the side being connected with the first lead-out wire
Outer surface is circular.
As long as the side being connected with the first lead-out wire of terminal component is set to cylindrical shape it becomes possible to utilize calking etc. easily
Ground connection terminal component and the first lead-out wire.
At least a portion of the outer peripheral face of above-mentioned terminal component can also be covered by insulating barrier.
The outer peripheral face of the above-mentioned conductor exposing from aforementioned body portion can also be covered by insulating barrier.Expose from aforementioned body portion
The outer peripheral face of above-mentioned second metal tube can also be covered by insulating barrier.
If the outer peripheral face of the conductor exposing from main part is covered by insulating barrier, as described above, can more reliably meet
The shielding interlayer pulse behaviors between the terminal component of configured separate and conductor on the circumferencial direction of main part.Equally, as long as
The outer peripheral face of the second metal tube exposing from main part covered by insulating barrier it becomes possible to more reliably meet the second metal tube with
Shielding interlayer pulse behaviors between the terminal component of its circumferential position for the configuration.
In addition, by the outer peripheral face covering terminal component with insulating barrier, can more reliably meet and in insulating component
The pulse behaviors of the shielding interlayer between the conductor of circumferencial direction configured separate, the second metal tube.
Can also be that the overall of connecting structure is covered by anticorrosion cover and guard tube, this anticorrosion cover at least covers above-mentioned exhausted
Edge component and a part for above-mentioned second metal tube, this guard tube at least covers the outer peripheral face of above-mentioned first metal tube, above-mentioned
Anticorrosion cover is respectively arranged with makes above-mentioned conductor and above-mentioned terminal component be drawn out to the outlet of outside.
According to above-mentioned composition, due to the simple shape of the second metal tube side of insulating component, so by sentencing to this point
Not being provided with makes above-mentioned conductor and the anticorrosion cover of outlet that above-mentioned terminal component is drawn out to outside is covered, Neng Goujian
Just prevent the immersion of water, can easily carry out the waterproof at this position.
Second invention be power cable connecting structure used in insulating component, possess：The main part of tubular, it is one
Individual end has the connecting portion with the first metal tube；Second metal tube, it is to be embedded in another end in aforementioned body portion
Mode is arranged, with aforementioned body integrally；Conductor, it is arranged on the inside in aforementioned body portion, is arranged on above-mentioned to be embedded in
The position of above-mentioned second metal tube that the mode of main part is arranged, and the inside bending in aforementioned body portion, end is from above-mentioned
The end face of main part is prominent to the direction of above-mentioned second metal tube：And notch, its in the outer peripheral face in aforementioned body portion, with phase
The mode above-mentioned conductor being separated on the circumferencial direction in aforementioned body portion to the distance of regulation is formed.
According to the second invention, use in the connecting portion of power cable, make attended operation excellent, a pair of electric power electricity can be made
The mutual shielding interlayer of cable reliably insulate each other, and is able to ensure that the shielding interlayer pulse voltage of conductor and terminal component
Energy.In addition, be capable of connecting structure miniaturization and do not make connecting structure external diameter excessive.
Invention effect
In accordance with the invention it is possible to providing, attended operation is excellent, water proofing property and shielding interlayer pulse behaviors are also excellent
Connecting structure of power cable etc..
Brief description
Fig. 1 is sectional view, the B direction view of Fig. 2 representing connecting structure 1.
Fig. 2 is the sectional view representing connecting structure 1, the A direction view of Fig. 1.
Fig. 3 is the axonometric chart representing insulating component 19.
Fig. 4 is the sectional view representing insulating component 19.
Fig. 5 is the axonometric chart representing terminal component 39.
Fig. 6 is the sectional view representing terminal component 39.
Fig. 7 is the figure of the installation constitution representing terminal component 39.
Fig. 8 is the figure representing terminal component 39 and the position relationship of conductor 22.
Fig. 9 is the axonometric chart representing anticorrosion cover 32.
Figure 10 is the figure representing existing connecting structure 100.
Specific embodiment
Hereinafter, referring to the drawings while illustrating to embodiments of the present invention.Fig. 1, Fig. 2 represent connecting structure 1
Figure, Fig. 1 is the B direction view of Fig. 2, and Fig. 2 is the A direction view of Fig. 1.Connecting structure 1 is power cable, i.e. power cable 3a, 3b
The construction of connecting portion.Power cable 3a, 3b internally have conductor portion 5, in the periphery of conductor portion 5, are formed in order from inner side
There are insulation division 7, semiconductive portion 9, aluminum corrugated tube 11, external jacket 13.In addition, in the present invention, the composition of power cable 3a, 3b
It is not limited to the example illustrating.
Connected with conductor coupling portion 6 between conductor portion 5.Conductor coupling portion 6 is such as metal sleeve etc..In conductor coupling portion 6
Peripheral part, in order to ensure insulating properties, be provided with rubber component 37.Rubber component 37 is formed with the thickness specifying to guarantee conductor even
Insulating properties near socket part 6.That is, the peripheral part near conductor coupling portion 6 (substantially central portion of rubber component 37) is large-diameter portion.
It is provided as the copper of the first metal tube in the peripheral part of rubber component 37 in the way of covering near conductor coupling portion
Pipe 15a, to protect each insulation division, conductor coupling portion 6 etc..The end of copper pipe 15a is led with the aluminum corrugated tube 11 with power cable 3a
Logical mode engages.Additionally, conductor portion 5 of inside etc. protected by aluminum corrugated tube 11, the screen layer as power cable 3a, 3b plays
Function.
It is provided with insulating component 19 in the end that the connecting portion of the aluminum corrugated tube 11 with copper pipe 15a is opposition side.Insulating component
19 is the component of substantially tubular.Insulating component 19 is formed as one with the copper pipe 15b as the second metal tube and conductor 22.Copper
Pipe 15b and conductor 22 are to prominent with the end face of the insulating component 19 that the side that copper pipe 15a engages is opposition side.Additionally, it is aftermentioned
The particular content of insulating component 19.
Copper pipe 15b for protecting each insulation division etc. configures the power cable 3b side of the large-diameter portion in rubber component 37.That is,
Configured in the most mode covering rubber component 37 with respect to copper pipe 15a, due to being configured without rubber in the inside of copper pipe 15b
Glue component 37 etc., so copper pipe 15b is configured to path compared with copper pipe 15a.Further, since copper pipe 15a, 15b pass through the structure that insulate
Part 19 engages, therefore, will not mutual conduction.In addition, being provided with lid 31 in copper pipe 15a, can be from the holes by lid 31 closing by waterproof
The space that compound inflow is formed by copper pipe 15a, insulating component 19 and copper pipe 15b.
The end of copper pipe 15b is identical with copper pipe 15a, is engaged in the way of aluminum corrugated tube 11 conducting with power cable 3b.
Additionally, the joint of the respective end of copper pipe 15a, 15b and aluminum corrugated tube 11 is carried out using such as welding, it is wound around waterproof in periphery
Band etc..
The periphery of power cable 3a, 3b respective aluminum corrugated tube 11 and semiconductive portion 9 be respectively configured screen layer 35a,
35b.Screen layer 35a, 35b are such as metallic sieves (mesh).The respective end of screen layer 35a, 35b is with rubber component 37
The mode that periphery is separated from each other configures.That is, screen layer 35a, 35b is not turned on each other.
In the peripheral part of insulating component 19, in circumferential locations different from conductor 22, notch 38 (Fig. 2) is with to electric power
The mode of the axial elongation of cable 3a, 3b is arranged.Configure terminal component 39 in notch 38.Terminal component 39 enters insulating component
19 notch 38, towards the axial arrangement of power cable 3a, 3b.
One end of terminal component 39 is connected with copper pipe 15a.In addition, another end of terminal component 39 is in copper pipe
The outer circumferential side of 15b, is connected with the first lead-out wire 25 as external conductor.That is, terminal component 39 passes through insulation from copper pipe 15a side
Component 19 is drawn to copper pipe 15b side, is connected with the lead-out wire 25 of coaxial cable 23.Additionally, aftermentioned terminal component 39 is interior in detail
Hold.
The end of the conductor 22 arranging in the way of being embedded in insulating component 19 by a part, as in coaxial cable 23
Second lead-out wire 27 of portion's conductor is connected by joint 24.Joint 24 is, for example, sleeve, and conductor 22 is inserted from two ends with lead-out wire 27
Logical calking.
Additionally, conductor 22 is utilized from periphery with the connecting portion of lead-out wire 25 with the connecting portion of lead-out wire 27, terminal component 39
Guard tube or water blocking tape etc. implement water-proofing treatment.
In addition, passing through coaxial cable 23 to connecting structure 1 with the lead-out wire 27 of copper pipe 15a, 15b conducting and lead-out wire 25
Outside extraction, implement grounding etc..In addition it is also possible to lead-out wire 27 is connected with terminal component 39, by lead-out wire 25 with
Conductor 22 connects.
In the peripheral part of connecting structure 1, anticorrosion cover 32 is arranged at least one of mode covering insulating component 19.
As shown in figure 9, arranging outlet 34a, 34b in anticorrosion cover 32.From outlet 34a to outside conductor introduction 22 or and conductor
The lead-out wire 27 of 22 connections.In addition, from outlet 34b leading-out terminal component 39 or the lead-out wire that is connected with terminal component 39
25.
In addition, as shown in dotted line in Fig. 1,2, with least a portion of coating anticorrosive cover 32, and then covering copper pipe 15a's
Mode, covers guard tube 12, implements the water-proofing treatment of connecting structure 1.In addition although eliminating particular content, but, anti-corrosion
Implement to omit the water-proofing treatment of diagram between erosion cover 32 and copper pipe 15b, conductor 22, terminal component 39 etc. etc., be prevented from water to
The internal immersion of connecting structure 1.Now, due to not prominent to peripheral part raised (terminal in Fig. 10 in connecting structure 1
Portion 121a, 121b or conductor in connection etc.), easily stop water.
Next, being described in detail to insulating component 19.Fig. 3 is the axonometric chart of insulating component 19, and Fig. 4 is section view
Figure.Insulating component 19 is the component of substantially tubular, is made up of main part 41, copper pipe 15b, conductor 22 etc..Main part 41 is with example
Substantially cylindric insulator as resin formation such as epoxy resin.One end of copper pipe 15b is embedded in the interior of main part 41
Portion, main part 41 is formed as one with copper pipe 15b.Copper pipe 15b projects from an end face of main part 41.
Another side setting and the connecting portion of copper pipe 15a, i.e. connecting portion 43 in main part 41.Periphery in connecting portion 43
Face, is provided for being configured to the groove 51 of o-ring of acquisition water proofing property and for the attached bottom of the fixing copper pipe 15a such as bolt
Hole 49.Additionally, as noted previously, as it is path that copper pipe 15b compares copper pipe 15a, therefore, connecting portion 43 is in a ratio of with copper pipe 15b
Big footpath.In this embodiment, the metal annulus that connecting portion 43 is arranged in the way of by imbedding one end used in main part 41
The connecting elements that part is constituted is formed.In addition it is also possible to directly form hole 49 and the groove 51 at attached bottom in the end of main part 41, by this
Place is set to connecting portion, and does not utilize metal endless member to form connecting portion 43 as described above.
As shown in figure 4, the outer peripheral face at the position of the copper pipe 15b being arranged in the way of imbedding main part 41 is using welding etc.
Bonded conductor 22.Conductor 22 is, for example, metal bar.Conductor 22 bends in the inside of main part 41, dashes forward from the end face of main part 41
Go out.That is, conductor 22 is radially oriented joint from the outer peripheral face of copper pipe 15b, the inside of main part 41 towards copper pipe 15b prominent side
To about 90 ° of bending.Therefore, the power cable 3b's (Fig. 1) that the end direction of conductor 22 connects is axial, i.e. towards with respect to main body
Portion 41 is projected with the projected direction identical direction of copper pipe 15b.
In addition, as shown in figure 3, main part 41 peripheral part, formed at the detached position of circumferencial direction with conductor 22
Notch 38.Notch 38 is the position configuring above-mentioned terminal component 39 (Fig. 2).
Additionally, the external diameter near the protuberance of the copper pipe 15b of main part 41 and conductor 22 be set as conductor 22 with
And the external diameter needed for configuration of terminal component 39, it is larger diameter.As long as in addition, the external diameter of connecting portion 43 side of main part 41
There is the MIN external diameter that can engage with copper pipe 15a, be less diameter.That is, the maximum outside diameter of main part 41
It is to consider the configuration of conductor 22 and terminal component 39 and determine.The maximum outside diameter portion of main part 41 is section circular,
In the outer peripheral face of main part 41, do not formed concavo-convex in addition to notch 38.
In the outer surface of the copper pipe 15b exposing from main part 41, insulating barrier 47 is set.Equally, exposing from main part 41
The outer surface setting insulating barrier 45 of conductor 22.Insulating barrier 45,47 both can have been formed using dipping it is also possible to using corrosionproof pipes or
Insulation tube or insulating tape etc. are formed.
Insulating barrier 45,47 is present to ensure that shielding interlayer pulse behaviors and being formed and terminal component 39 between.Though that is,
So insulated with copper pipe 15b and conductor 22 using insulating component 19 with the terminal component 39 of copper pipe 15a conducting, but, in order to more
Reliably ensure that shielding interlayer pulse behaviors therebetween form insulating barrier 45,47.Additionally, in order to more improve insulating component 19
Shielding interlayer pulse behaviors, on the border of end face and the conductor 22 exposing from main part 41 and copper pipe 15b of main part 41
Nearby it is desirable to the insulation clay of diagram is omitted in setting（putty）Component.
Insulating component 19 for example manufactures in the following manner.First, pre- in the outer peripheral face welding of the copper pipe 15b of advance comprising
First implement the conductor 22 of bending machining.In addition, to connecting portion 43 processing groove 51 and hole 49.Conduct obtained by so processing
Copper pipe 15b (conductor 22) and the metal tube of connecting portion 43 are arranged respectively to mould, flow into resin, thus, insulating component into mould
19 by one cast molding.
Additionally, with groove 51 and being set to connecting portion in the hole 49 directly forming attached bottom in the end of main part 41 as described above
In the case of, can when by main part 41 molding the hole 49 at the attached bottom of molding simultaneously and groove 51.In addition, shaping main part 41
Afterwards it is also possible to form hole 49 and the groove 51 at above-mentioned attached bottom using processing.But, the manufacture method of insulating component 19 is not limited to
The method.
Next, being described in detail to terminal component 39.Fig. 5 is the axonometric chart representing terminal component 39, and Fig. 6 is to represent
The sectional view of terminal component 39.Terminal component 39 is, for example, metal conductor.Terminal component 39 tabular of side setting at one end
Portion of terminal 59, in the round bar portion 53 that is connected with the first lead-out wire of another side setting.Portion of terminal 59 and circle bar portion 53 pass through flat
Plate portion 55 connects.The external surface shape of terminal component 39 is that portion of terminal 59 and flat part 55 are rectangle, and circle bar portion 53 is round
Shape.In portion of terminal 59 providing holes 63.Hole 63 is used for the connection with the flange part 69 (Fig. 7) of copper pipe 15a described later.
The portion of terminal ' connection ' of terminal component " the first metal tube with " refers to electrically connect additionally, in this application, as long as end
The portion of terminal 59 of sub- component 39 is electrically connected with copper pipe 15a, either passes through flange part 69 and other component indirectly
Connect, being still directly connected to can.
Portion of terminal 59 is engaged with the flat part 55 being formed by planar plate members using welding etc..Flat part 55 is for example substantially to cut open
The solid of face rectangle.Additionally, portion of terminal 59 can also form as one with flat part 55.Another end of flat part 55 with
Engaged with the round bar portion 53 that round metal bar is formed.Circle bar portion 53 one end is cut into semicircle, here with welding
In mating plates portion 55.It is further possible to circle bar portion 53 is integrally formed with flat part 55.
The end (end of terminal component 39) in circle bar portion 53 is the connection with the lead-out wire 25 (Fig. 2) of coaxial cable 23
Portion.
In the outer peripheral face of terminal component 39, except the part of portion of terminal 59, form insulating barrier 61.Insulating barrier 61 can be by soaking
Bathing with hot decoction is become it is also possible to be formed using corrosionproof pipes or insulation tube or insulating tape etc..As described above, insulating barrier 61 is in order to true
Protect the shielding interlayer pulse behaviors and conductor 22 or copper pipe 15b between and formed.Additionally, the insulating barrier 61 for terminal component 39
Can also at least formed on from outer peripheral face between the connecting portion at the position of notch 38 to lead-out wire 25 for the configuration, rather than
The outer surface being formed at terminal component 39 is overall.
Fig. 7 is the figure of the installation constitution representing terminal component 39.In the end of copper pipe 15a, according to necessary using welding etc.
Engage the flange part 69 of ring-type.Flange part 69 is the conductor of metal etc..Terminal component 39 with bolt 67 grade of through hole 63 with convex
Edge 69 connects.That is, terminal component 39 is to engage in the way of copper pipe 15a conducting.Therefore, copper pipe 15a, flange part 69 and
The whole current potential of connecting portion 43 is identical.Additionally, flange part 69 and connecting portion 43 connecting portion for copper pipe 15a and insulating component 19.
Additionally, with respect to the position of terminal component 39 configuration, in the diverse location of the circumferencial direction of flange part 69, copper pipe
15a (flange part 69) is connected with the connecting portion 43 of insulating component 19.Flange part 69 is passed through insertion flange part 69 with connecting portion 43
The hole 49 of bolt (in figure dotted line) and connecting portion 43 screw togather to fix.That is, the flange part 69 of copper pipe 15a with it axially, that is, its
The mode that inner peripheral surface is connected with the outer peripheral face of the connecting portion 43 of insulating component 19, chimeric with connecting portion 43, from mutual clinch
Outer circumferential side, engaged to axially vertical direction with bolt etc..Now, existed using configuration between connecting portion 43 and flange part 69
O-ring 65 sealing of groove 51.
Terminal component 39 is to draw in copper pipe 15b side across in the way of insulating component 19 (main part 41) from copper pipe 15a side.
Now, terminal component 39 configures in the notch 38 being formed at main part 41.Notch 38 than terminal component 39 external diameter more
Deep.Therefore, configuration will not be radially projecting from the outermost circumference of insulating component 19 in the terminal component 39 of notch 38.
Connect lead-out wire 25 in the end of terminal component 39 (circle bar portion 53).In this case, for example, as long as will draw
The end of line 25 and the end insertion sleeve in circle bar portion 53, by calking sleeve connection terminal component 39 and lead-out wire 25.
Terminal component 39 utilizes guard tube or water blocking tape etc. to implement water-proofing treatment with the connecting portion of lead-out wire 25 from periphery.Additionally, terminal
Component 39 can also be additive method with the method for attachment of lead-out wire 25.
As described above, for the change of section shape near the boundary portion in the flat part 55 of terminal component 39 and circle bar portion 53
Point.The boundary portion (connecting portion of planar plate members and circle bar component) in this flat part 55 and circle bar portion 53 is located at the periphery of connecting portion 43
Portion.That is, the flat part 55 of terminal component 39 and the connecting portion (that is, the position of outer shape change) in circle bar portion 53 are located at and copper pipe
The periphery of 15a current potential identical conductor.By in such manner, it is possible to guarantee higher shielding interlayer pulse behaviors.The following institute of its reason
State.
When the flat part 55 of terminal component 39 and the position configuration of section shape change as circle bar portion 53 are in insulation structure
When part 19 or the different periphery of copper pipe 15b of current potential, in the air forms uneven electric field concentrated area, and insulating properties reduce.
On the other hand, when by section shape as described above change point configuration with terminal component 39 current potential identical copper pipe 15a or
During the periphery of connecting portion of person copper pipe 15a and insulating component 19, the formation of this uneven electric field concentrated area can be relaxed.
So, in the present embodiment, due to flat part 55 and circle bar portion 53 junction surface configuration with copper pipe 15a current potential
The periphery of identical connecting portion 43, therefore, it is possible to make insulating properties improve the shielding interlayer pulse behaviors it is ensured that higher.Additionally,
In the case of not using flange part 69 or copper pipe 15a directly engaged with insulating component 19 by connecting portion 43 ground, as long as will be above-mentioned
Section shape change point configure in the periphery of copper pipe 15a.As long as in addition, identical with copper pipe 15a current potential it is also possible to will be upper
State section shape change point to configure in the periphery of flange part 69.
Fig. 8 is the sectional view observed from the copper pipe 15b side of the state being configured with terminal component 39.Additionally, the electric power of inside
The composition of cable etc. omits diagram.As described above, the conductor 22 being arranged in the way of being embedded in main part 41 and terminal component 39
(notch 38) main part 41 circumferencial direction separation predetermined angular configure (in figure arrow C).In addition, conductor 22 and terminal
Component 39 configures on the center with respect to connecting structure, roughly the same circumference.
Additionally, as the distance between conductor 22 and terminal component 39, as long as have being able to ensure that shielding interlayer pulse feature
The distance of energy.For example, it is desirable to respect to the center of insulating component 19 (connecting structure 1), be separated from each other more than 90 °.
In addition, the gap with terminal component 39 producing in notch 38, for adding that the insulation of terminal component 39 covers
Strong and centering is it is also possible to filling clay etc..
Next, illustrating to anticorrosion cover 32.Fig. 9 is the axonometric chart representing anticorrosion cover 32.32, anticorrosion cover
As for resin-made.As described above, anticorrosion cover 32 is arranged on the periphery of insulating component 19, prevent inside water immersion connecting structure 1.
The reducing diameter part 71 of an end face side setting substantially tubular in wide diameter portion 73 for the anticorrosion cover 32.End face portion direction in wide diameter portion 73
Outlet 34a, 34b with reducing diameter part 71 equidirectional setting substantially tubular.
Wide diameter portion 73 is the position of the periphery of main part 41 covering insulating component 19.That is, the internal diameter of wide diameter portion 73 corresponds to
The external diameter of the prominent side of the maximum outside diameter portion in main part 41, i.e. copper pipe 15b and conductor 22.In addition, reducing diameter part 71 is to cover
At least one of position of lid copper pipe 15b.That is, the internal diameter of reducing diameter part 71 corresponds to the external diameter of copper pipe 15b.
Outlet 34a, 34b are formed with separating predetermined angular on the circumferencial direction of anticorrosion cover 32.Outlet 34a is to lead
Body 22 or the position of lead-out wire 27 extraction being connected with conductor 22.In addition, outlet 34b is terminal component 39 or and terminal
The position that the lead-out wire 25 that component 39 connects is drawn.That is, outlet 34a, 34b is from the connecting structure being covered with anticorrosion cover 32
The lead-out wire 27 (conductor 22) being respectively turned on copper pipe 15a, 15b, lead-out wire 25 are drawn to the outside of connecting structure 1 in 1 inside
The position of (terminal component 39).
Do not have to radially projecting position in the peripheral part of anticorrosion cover 32.Therefore, in the wide diameter portion 73 of anticorrosion cover 32
Periphery when covering the guard tube such as collapsible tube, can highly carry out water-proofing treatment.Further, since anticorrosion cover 32 has in itself
A certain degree of shape retention, therefore, when covering soft guard tube etc. from periphery, the respective end of outlet 34a, 34b
Will not damage by pressure near portion, be prevented from due to the external force of hydraulic pressure when temperature change or immersion etc., this guard tube and outlet
The coincidence part part deformation of 34a, 34b, sealing deteriorates.
More than, according to present embodiment, copper pipe 15a can be made reliably to insulate with copper pipe 15b using insulating component 19.Separately
Outward, because the main part 41 of insulating component 19 is formed as one with copper pipe 15b, accordingly, with respect to existing method, can omit
A piece copper pipe and the connection operation of insulating component.Therefore, it is possible to reduce working hour.In addition, can reduce O-shaped needed for connecting
The use component of the containment member of ring etc. or bolt etc..And, due to not needing the company of main part 41 and copper pipe 15b in construction
Connect operation, thus compared with the past, the immersion risk of the water at this position can be reduced.
In addition, to the flange part 69 of copper pipe 15a the connecting portion 43 to be axially inserted into insulating component 19, from outer peripheral face with axle
To vertical direction, portion 43 is fixedly connected with bolt.Therefore, with the past such, copper pipe and insulating component are engaged with flange part
Situation is compared, being capable of reduced outside diameter.In addition, it is easy to guarantee the sky of the joint for bolt etc. compared with the joint of flange part
Between, operability is also excellent.
In addition, in insulating component 19, being arranged in the way of imbedding with the conductor 22 of copper pipe 15b conducting, conductor 22 is in main body
The inside bending in portion 41, projects from the end of insulating component 19.It is therefore not necessary to it is outer in the copper pipe 15b being connected with lead-out wire 27
Setting terminal etc. on surface, in addition, conductor 22 is not prominent to the outer peripheral face of insulating component 19.
Further, since lead-out wire 27 is connected with the end of conductor 22, therefore, it is possible to easily be carried out even using sleeve etc.
Connect, and attended operation is easy compared with the connection of existing terminal base etc..In addition, compared with existing connection terminal etc., can
Simplify the shape of conductor 22 and the connecting portion of lead-out wire 27, do not form the shape of complexity.Therefore, guard tube is made to shrink in connecting portion
And install or wind water blocking tape etc. and be easier, can reliably be attached the waterproof in portion.
In addition, the terminal component 39 turning on copper pipe 15a is configured the long dimensional directions in power cable, with insertion insulation
Component 19 simultaneously guides the mode of copper pipe 15b side and uses, thereby, it is possible to by the lead-out wire 25 of coaxial cable 23 and terminal component 39
Connecting portion configures the outer circumferential side in copper pipe 15b.Therefore, do not need to make portion of terminal etc. erect in the periphery of copper pipe 15a.Accordingly, it is capable to
Enough reduce the external diameter of connecting structure 1.As long as further, since in the end of terminal component 39, lead-out wire 25 is connected with sleeve etc. being
Can, so compared with the existing connection with terminal base etc., attended operation is easier.
Further, since terminal component 39 is formed with circle bar component by mating plates component, therefore, it is possible to by terminal component
39 end is set to flat part 55, and another end is set to circle bar portion 53.Because flat part 55 has flat part, because
This, can easily be engaged with portion of terminal 59.Further, since flat part 55 has flat part, therefore, flat part 55 itself is made
Carry out function for portion of terminal to be also easier.Therefore, it is possible to easily connection terminal component 39 and copper pipe 15a.
Further, since by the flat part 55 of terminal component 39 and circle bar portion 53 boundary portion near section shape change point
Configure in the periphery with terminal component 39 current potential identical connecting portion 43, therefore, it is possible to relax the uneven electric field of in the air
The formation of concentrated area.Thereby, it is possible to guarantee higher shielding interlayer pulse behaviors.
In addition, terminal component 39 is by being formed at the notch 38 of main part 41 periphery of insulating component 19, by from copper pipe
15a lateral copper pipe 15b side is drawn.Therefore, terminal component 39 will not in the maximum outside diameter portion than insulating component 19 more to outer peripheral side
Prominent.Therefore, it is possible to reduce the external diameter of connecting structure 1.
In addition, not insulating component 19 outer peripheral face formed by terminal component 39 produce concavo-convex, and, as described above,
End face due to the copper pipe 15b side from insulating component 19 by terminal component 39 and conductor 22 is drawn to copper pipe 15b side, therefore,
These positions can be made more highly to hide water using anticorrosion cover 32.
In addition, conductor 22 is discretely configured in circumferencial direction in insulating component 19 with terminal component 39.Therefore, it is possible to can
Guarantee in order to ensure distance necessary to shielding interlayer pulse behaviors by ground.
In addition, the outer peripheral face of the outer peripheral face of the conductor 22 exposing in the end face from main part 41 and copper pipe 15b shape respectively
Become insulating barrier 45,47.In addition, the outer peripheral face in terminal component 39 arranges insulating barrier 61.Therefore, it is possible to reliably ensure that terminal structure
Shielding interlayer pulse behaviors between part 39 and copper pipe 15b and conductor 22.
In addition, utilizing anticorrosion cover 32, can cover the connecting portion of conductor 22 and lead-out wire 27 and terminal component 39 with
The connecting portion of lead-out wire 25.Therefore, it is possible to improve the anticorrosive property at this position.In addition, arranging a pair of extraction in anticorrosion cover 32
Mouth 34a, 34b.Therefore, it is possible to by conductor 22 (lead-out wire 27) and terminal component 39 (lead-out wire 25) both sides in connecting structure
Portion is fetched into outside.
Particularly, the closure of conductor 22 and terminal component 39 is all the axial direction of power cable, can be towards one
Direction (power cable 3b direction) is taken out.Therefore, the process of lead-out wire 25 and lead-out wire 27 is also easier.Therefore, operate
Property is also excellent.
More than, referring to the drawings while being illustrated to embodiments of the present invention, but, the technology of the present invention
Scope is not affected by above-mentioned embodiment.As long as those skilled in the art are it is clear that can be remembered in patent claims
Expect various modifications or modification in the category of the thought of technology carrying, and know that these fall within the skill of the present invention certainly
The scope of art.
For example, the shape constituting each component of connecting structure 1 etc. is not limited to the example of diagram.Further, since ensure that waterproof
Property or insulating properties, so the water blocking tape omitting diagram or insulating tape etc. can also be appropriately set.In addition, conductor 22, circle bar portion
53rd, flat part 55 is all made up of solid component, but it is also possible to be constituted with the body of hollow.
Description of reference numerals
1：Connecting structure；3a、3b：Power cable；5：Conductor portion；6：Conductor coupling portion；7：Insulation division；9：Semiconductive portion；
11：Aluminum corrugated tube；12：Guard tube；13：External jacket；15a、15b：Copper pipe；19：Insulating component；22、22a：Conductor；23：With
Shaft cable；24：Joint；25：Lead-out wire；27：Lead-out wire；31：Lid；32：Anticorrosion cover；34a、34b：Outlet；35a、35b：
Screen layer；37：Rubber component；38：Notch；39：Terminal component；41：Main part；43：Connecting portion；45、47、61：Insulating barrier；
49：Hole；51：Groove；53：Circle bar portion；55：Flat part；59：Portion of terminal；63：Hole；65：O-ring；67：Bolt；69：Flange part；
71：Reducing diameter part；73：Wide diameter portion；100：Connecting structure；103a、103b：Power cable；105：Conductor portion；106：Conductor connects
Portion；107：Insulation division；109：Semiconductive portion；111：Aluminum corrugated tube；113：External jacket；115a、115b：Copper pipe；117a、
117b：Flange part；119：Insulating component；121a、121b：Portion of terminal；123：Coaxial cable；125：Lead-out wire；127：Lead-out wire；
129：Seal box；131、133：Lid；135a、135b：Screen layer；137：Rubber component.
Claims (9)
1. a kind of connecting structure of power cable is it is characterised in that possess：
First metal tube, its screen layer conducting with a power cable；
Second metal tube, its screen layer conducting with another power cable；
First lead-out wire, it is turned on above-mentioned first metal tube；
Second lead-out wire, it is turned on above-mentioned second metal tube；And
Insulating component, it has the cylindrical body part arranging in the way of the end embedment by above-mentioned second metal tube,
Above-mentioned first metal tube covers power cable connecting portion each other, around above-mentioned another power cable, and above-mentioned
Insulating component directs or through connecting elements and connects, and makes above-mentioned first metal tube and above-mentioned second gold medal using above-mentioned insulating component
Belong to pipe insulation,
The position of above-mentioned second metal tube arranging in the way of being embedded in aforementioned body portion is provided with conductor,
Above-mentioned conductor bends in the inside in aforementioned body portion, and the end face from aforementioned body portion is to the power cable of above-mentioned another side
Direction project, be connected with above-mentioned second lead-out wire.
2. power cable according to claim 1 connecting structure it is characterised in that
In the periphery in aforementioned body portion, to separate predetermined distance with respect to above-mentioned conductor on the circumferencial direction in aforementioned body portion
Mode is formed with notch,
It is connected with the portion of terminal of terminal component in above-mentioned first metal tube,
Above-mentioned terminal component passes through above-mentioned notch from above-mentioned first metal tube side, draws in above-mentioned second metal tube side, and upper
State the first lead-out wire to connect.
3. power cable according to claim 2 connecting structure it is characterised in that
The shape from portion of terminal side for the external surface shape of above-mentioned terminal component to the change of shape of the first lead-out wire connecting side
Part, positioned at the peripheral part of above-mentioned first metal tube or above-mentioned connecting elements.
4. power cable according to claim 2 connecting structure it is characterised in that
The portion of terminal of above-mentioned terminal component be shaped as tabular, the side being connected with the first lead-out wire be shaped as outer surface circle
Shape.
5. power cable according to claim 2 connecting structure it is characterised in that
At least a portion of the outer peripheral face of above-mentioned terminal component is covered by insulating barrier.
6. power cable according to claim 2 connecting structure it is characterised in that
The overall of connecting structure is covered by anticorrosion cover and guard tube, and this anticorrosion cover at least covers above-mentioned insulating component and above-mentioned
A part for second metal tube, this guard tube at least covers the outer peripheral face of above-mentioned first metal tube,
Being respectively arranged with above-mentioned anticorrosion cover makes above-mentioned conductor and above-mentioned terminal component be drawn out to the outlet of outside.
7. power cable according to claim 1 connecting structure it is characterised in that
The outer peripheral face of the above-mentioned conductor exposing from aforementioned body portion is covered by insulating barrier.
8. power cable according to claim 1 connecting structure it is characterised in that
The outer peripheral face of above-mentioned second metal tube exposing from aforementioned body portion is covered by insulating barrier.
9. used in a kind of connecting structure of power cable insulating component it is characterised in that possessing：
The main part of tubular, it has the connecting portion with the first metal tube an end；
Second metal tube, it is arranged in the way of another end being embedded in aforementioned body portion, with aforementioned body integrally；
Conductor, it is arranged on the position of above-mentioned second metal tube arranging in the way of being embedded in aforementioned body portion, and upper
State the inside bending of main part, the end face from aforementioned body portion for the end is prominent to the direction of above-mentioned second metal tube；And
Notch, its in the outer peripheral face in aforementioned body portion, with respect to above-mentioned conductor on the circumferencial direction in aforementioned body portion every
The mode opening the distance of regulation is formed.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013024306A JP5761535B2 (en) | 2013-02-12 | 2013-02-12 | Power cable connection structure and insulation member |
| JP2013-024306 | 2013-02-12 | ||
| JP2013250242A JP5835716B2 (en) | 2013-12-03 | 2013-12-03 | Power cable connection structure |
| JP2013-250242 | 2013-12-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103986112A CN103986112A (en) | 2014-08-13 |
| CN103986112B true CN103986112B (en) | 2017-03-01 |
Family
ID=51277983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410049146.5A Active CN103986112B (en) | 2013-02-12 | 2014-02-12 | The connecting structure of power cable and insulating element |
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| Country | Link |
|---|---|
| CN (1) | CN103986112B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112368946B (en) * | 2018-07-27 | 2022-03-04 | 住友电气工业株式会社 | Communication system and communication device |
| EP4033502A1 (en) * | 2021-01-21 | 2022-07-27 | Hitachi Metals, Ltd. | Bushing unit and power cable connection structure for a railway vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073055A (en) * | 1991-11-08 | 1993-06-09 | 皮雷利卡维公司 | Be used to cover the closed component of the elongated cylinder that resembles cable joint |
| JPH1140229A (en) * | 1997-07-23 | 1999-02-12 | Asahi Metal Ind Ltd | Conductor connecting structure |
| JPH11191910A (en) * | 1997-10-07 | 1999-07-13 | Alcatel Cit | Airtight protective device in high-voltage cable connection part |
| JPH11205987A (en) * | 1997-11-28 | 1999-07-30 | Alcatel Cit | Cable joint with grounding connection and/or screen cross-bonding for power cable |
| CN2909654Y (en) * | 2006-06-12 | 2007-06-06 | 浙江永锦电力器材有限公司 | Protector for high-tension cable middle joint |
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2014
- 2014-02-12 CN CN201410049146.5A patent/CN103986112B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073055A (en) * | 1991-11-08 | 1993-06-09 | 皮雷利卡维公司 | Be used to cover the closed component of the elongated cylinder that resembles cable joint |
| JPH1140229A (en) * | 1997-07-23 | 1999-02-12 | Asahi Metal Ind Ltd | Conductor connecting structure |
| JPH11191910A (en) * | 1997-10-07 | 1999-07-13 | Alcatel Cit | Airtight protective device in high-voltage cable connection part |
| JPH11205987A (en) * | 1997-11-28 | 1999-07-30 | Alcatel Cit | Cable joint with grounding connection and/or screen cross-bonding for power cable |
| CN2909654Y (en) * | 2006-06-12 | 2007-06-06 | 浙江永锦电力器材有限公司 | Protector for high-tension cable middle joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103986112A (en) | 2014-08-13 |
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Effective date of registration: 20170316 Address after: Tokyo, Japan, Japan Patentee after: Furukawa Electric Co., Ltd. Patentee after: Fujikura Ltd. Address before: Tokyo, Japan Patentee before: Furukawa Electric Co., Ltd. |