CN103986112A - Electric power cable connecting structure and insulating part - Google Patents
Electric power cable connecting structure and insulating part Download PDFInfo
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- CN103986112A CN103986112A CN201410049146.5A CN201410049146A CN103986112A CN 103986112 A CN103986112 A CN 103986112A CN 201410049146 A CN201410049146 A CN 201410049146A CN 103986112 A CN103986112 A CN 103986112A
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Abstract
The invention relates to an electric power cable connecting structure and an insulating part. The insulating part (19) is roughly a tubular part consisting of a main body part (41), a copper tube (15b), a conductor (22) and the like. The main body part (41) is an insulating body made of a material such as a resin. One end part of the copper tube (15b) is buried in the main body part (41) which is integrated with the copper tube (15b). One position of the part, buried in the main body part, of the copper tube is connected to the conductor (22) in a welded manner. The conductor bends in the main body part (41) and protrudes on the end face of the main body part (41). The conductor is connected in the radial direction at the outer circumferential face of the copper tube (15b) and bends in the main body part (41) through an angle of 90 degrees in a direction in which the copper tube (15b) protrudes. Thus, the end part of the conductor (22) protrudes in the axial direction of the connected electric power cable and the direction in which the copper tube (15b) protrudes.
Description
Technical field
In particular, the present invention relates to a kind of preferred connection structure of the power cable as underground transmission line and be used in the insulating component of this structure.
Background technology
In the connecting portion each other of the power cable with metal screen layer, draw earth connection, ground connection independently respectively, or, between threephase cable, connected by jumper.In such connection structure, for example use insulating component, so that not conducting (patent documentation 1, patent documentation 2) between mutual screen between the power cable connecting.
Prior art document
Patent documentation 1: Japanese Patent Publication 01-92759 communique;
Patent documentation 2: Japanese kokai publication hei 08-149679 communique.
Figure 10 is the figure that represents existing power cable connection structure 100 each other.Connecting in structure 100, between the end of power cable 103a, 103b, connect.Power cable 103a, 103b have conductor portion 105 in inside, be sequentially with insulation division 107, semiconductive portion 109, aluminium bellows 111, external jacket 113 at the outer circumferential side of conductor portion 105 from inside.
Between the end of conductor portion 105, utilize conductor coupling portion 106 to connect.The periphery of the connecting portion between conductor portion 105 is provided with the rubber component 137 with specific thickness in order to ensure insulating properties.In addition, be provided as the copper pipe 115a of metal tube to cover the mode of rubber component 137.
Copper pipe 115a configures in the mode of aluminium bellows 111 conductings of end and a power cable 103a.In addition, at the aluminium bellows 111 of the power cable 103b of another root, dispose copper pipe 115b in the mode of end conducting.In addition, copper pipe 115a, 115b for example weld to carry out with the utilization that is connected of each aluminium bellows 111, are wound around water blocking tape etc. in periphery.
Relative end separately at copper pipe 115a, 115b is provided with flange part 117a, 117b.Flange part 117a, 117b engage with the both ends of insulating component 119 respectively., copper pipe 115a, 115b engage by insulating component 119, not mutual conduction.In addition, be provided with in order to ensure water proofing property on the composition surface of flange part 117a, 117b and insulating component 119 and omit illustrated O type ring etc.
Configure respectively screen 135a, 135b at the aluminium bellows 111 separately of power cable 103a, 103b and the periphery of semiconductive portion 109.Screen 135a, 135b are formed to respectively the periphery of rubber component 137.The end separating of rubber component 137 sides of screen 135a, 135b, is made as trimming portion., screen 135a, 135b not conducting each other.In addition, the relative conductor coupling portion 106 of above-mentioned insulating component 119, is disposed at the side that is positioned at of part (trimming portion) that screen 135a, 135b separate.
Arrange and cover 131 at copper pipe 115a, can cover 131 hole and flow into waterproofing admixture to inside from arranging.In addition, in the outer peripheral face of copper pipe 115a, 115b, portion of terminal 121a, 121b to be set to radially outstanding mode.Portion of terminal 121a, 121b are for example tabular members, have the shape that can connect wire etc.
Be connected with respectively as the lead-out wire 127 of the inner conductor of coaxial cable 123 and as the lead-out wire 125 of external conductor at portion of terminal 121a, 121b., copper pipe 115a, 115b and lead-out wire 127 and lead-out wire 125 conductings respectively.Lead-out wire 127 and lead-out wire 125 are implemented grounding etc. in the outside that connects structure 100 as mentioned above.
In such connection structure, as the connecting portion of the lead-out wire 127 of the line of drawing and lead-out wire 125 and portion of terminal 121a, 121b to being connected radially giving prominence to of the side of constructing.Therefore, connect the overall external diameter of structure and become large.In addition, the profile of connection structure complicates, and is difficult to utilize the coverings such as collapsible tube connect the periphery entirety of structure or utilize these connecting portions of covering such as water blocking tape.Therefore, there are the following problems: need to use waterproof clay etc., operation is loaded down with trivial details.In addition, the water-proofing treatment under so complicated shape also likely waits because construction is wrong the reduction that causes water-proof function.
On the other hand, exist and use stuffing box (coffin box) 129 to cover the situation of connecting portion entirety.Stuffing box 129 covers after entirety, can flow into waterproofing compound to inside from covering 133.As long as use such stuffing box, just can improve and connect the overall water proofing property of structure.
But, in the time using stuffing box 129, exist and connect the problem that structure further maximizes.In addition, there are the following problems: also need the waterproofing compound in a large amount of inflow stuffing boxs 129.
In addition, in existing connection structure 100, two copper pipe 115a, 115b need to be engaged with insulating component 119 respectively.In addition, need to configure respectively O type ring etc. to carry out water-proofing treatment at the opposite face of flange part 117a, 117b and insulating component 119.Therefore, need to be used for engaging the man-hour of operation, in addition, due to the error etc. of constructing, cause the immersion route of water to increase, make thus the risk of water proofing property become large.
In addition, need to carry out the groove processing for O type ring to connecting portion separately, and, need to be used for the operating space that configures O type ring or tight a bolt.Therefore, the junction surface of bolt etc. need to be configured in to the outer circumferential side more radially than joint construction.Therefore, there is the problem in the large footpath of joint construction.
In addition, existing insulating component for flange part bolted joints, need to imbed lasso in inside.Therefore the problem that, exists the manufacturing cost of insulating component to uprise.
In addition, because lead-out wire 127 is connected with copper pipe 115a, therefore, lead-out wire 127 is idiostatic with copper pipe 115a.On the other hand, two copper pipe 115a, 115b are different current potentials.Therefore the lead-out wire 127, arranging in the mode of the peripheral part across two copper pipe 115a, 115b need to and copper pipe 115b and connected lead-out wire 125 between obtain fully insulation.In order to obtain this insulation, in existing connection structure, need to radially and long dimensional directions configure fully separatedly the different lead-out wire of current potential 127 and copper pipe 115b etc.Therefore, exist and connect the problem that structure maximizes.
Summary of the invention
The present invention completes in view of such problem, and its object is: provide attended operation good, the also connection structure etc. of good power cable of pulse performance between water proofing property and screen.
For solving the scheme of problem
In order to reach for above-mentioned purpose, the connection structure that the first invention is power cable, is characterized in that possessing:
The first metal tube, the screen conducting of itself and a power cable;
The second metal tube, the screen conducting of itself and another root power cable;
The first lead-out wire, itself and above-mentioned the first metal tube conducting;
The second lead-out wire, itself and above-mentioned the second metal tube conducting; And
Insulating component, it has the cylindrical body portion that the mode so that the end of above-mentioned the second metal tube is imbedded arranges,
Above-mentioned the first metal tube covers connecting portion each other of power cable, around above-mentioned another root power cable, with above-mentioned insulating component directly or be connected by connecting elements, utilize above-mentioned insulating component to make above-mentioned the first metal tube and above-mentioned the second metal tube insulation.
According to the first invention, because the end of the second metal tube arranges in the mode of the main part that is embedded in insulating component, the second metal tube and main part form as one, therefore, do not need to engage the operation of the second metal tube and main part, do not need to engage required bolt etc. yet.In addition, because main part and the second metal tube form as one, thus between the second metal tube and main part, do not need to carry out the water-proofing treatment of O type ring etc., therefore, the immersion route that can reduce the water of following operate miss of water-proofing treatment etc., obtains higher water proofing property.
Above-mentioned the second metal tube that is desirably in to be embedded in the position that the mode of aforementioned body portion arranges arranges conductor, above-mentioned conductor is in the interior curve of aforementioned body portion, outstanding to the direction of the power cable of above-mentioned another root side from the end face of aforementioned body portion, be connected with above-mentioned the second lead-out wire.
Like this, compared with the existing structure of the bonding conductors such as terminal base is set at the outer peripheral face of the second metal tube, can reduces and connect the concavo-convex of structure.Therefore, water-proofing treatment is afterwards simple.In addition, because conductor is to connecting the axially outstanding of structure, therefore, and also can be by the sleeve of tubular etc. for being connected of this conductor and lead-out wire, attended operation is also simple.
Be desirably in the periphery of aforementioned body portion, form notch in the mode that separates predetermined distance with respect to above-mentioned conductor on the circumferencial direction of aforementioned body portion, be connected with the portion of terminal of terminal component at above-mentioned the first metal tube, above-mentioned terminal component passes through above-mentioned notch from above-mentioned the first metal tube side, draw in above-mentioned the second metal tube side, be connected with above-mentioned the first lead-out wire.
Like this, the connecting portion of the first lead-out wire and terminal component can be configured in to the periphery of the second metal tube and not be configured in the first metal tube side.,, by the connecting portion of lead-out wire and terminal component being made as to the peripheral part of the first metal tube that the periphery of the second metal tube that external diameter is less instead of external diameter are larger, can make to connect structure integral miniaturization.In addition, because terminal component is configured in the notch of insulating component, so external diameter can be because terminal component becomes large.
Expect that the external surface shape of above-mentioned terminal component, from the shape of portion of terminal side to the part that is connected the change of shape of side with the first lead-out wire, is positioned at the peripheral part of above-mentioned the first metal tube or above-mentioned connecting elements.
Conventionally, in the time configuring the part of external surface shape variation of terminal component in the periphery of insulating component, in air, form inhomogeneous electric field concentrated area, become the key factor that insulation property are reduced.To this, in the present invention, the change point of the external surface shape of above-mentioned terminal component can be configured in to the periphery of the peripheral part of the first metal tube or the connecting elements of the first metal tube and insulating component.By like this, can relax the formation of airborne inhomogeneous electric field concentrated area.Like this, in the present invention, by the change point of the section shape of terminal component being configured in and the peripheral part of the idiostatic conductor of terminal component, can guarantee pulse performance between higher screen.
Expect above-mentioned terminal component portion of terminal be shaped as tabular, the side being connected with the first lead-out wire be shaped as outer surface circle.
As long as the side being connected with the first lead-out wire of terminal component is made as cylindric, just can utilize easily splicing ear member and first lead-out wire such as calking.
At least a portion of the outer peripheral face of above-mentioned terminal component also can be covered by insulating barrier.
The outer peripheral face of the above-mentioned conductor exposing from aforementioned body portion also can be covered by insulating barrier.The outer peripheral face of above-mentioned the second metal tube exposing from aforementioned body portion also can be covered by insulating barrier.
If the outer peripheral face of the conductor exposing from main part is covered by insulating barrier, described above, can meet more reliably pulse performance between the screen between terminal component and the conductor of configured separate on the circumferencial direction of main part.Equally, as long as the outer peripheral face of the second metal tube of exposing from main part is covered by insulating barrier, just can meet more reliably at the second metal tube and be configured in pulse performance between the screen between the terminal component of its circumferential position.
In addition, by covering the outer peripheral face of terminal component with insulating barrier, can meet more reliably and pulse performance between the screen between conductor, second metal tube of the circumferencial direction configured separate of insulating component.
Also can be that the entirety that connects structure is covered by anticorrosion cover and guard tube, this anticorrosion cover at least covers a part for above-mentioned insulating component and above-mentioned the second metal tube, this guard tube at least covers the outer peripheral face of above-mentioned the first metal tube, is respectively arranged with and makes above-mentioned conductor and above-mentioned terminal component be drawn out to outside outlet at above-mentioned anticorrosion cover.
According to above-mentioned formation, due to the simple shape of the second metal tube side of insulating component, so be respectively arranged with the anticorrosion cover that makes above-mentioned conductor and above-mentioned terminal component be drawn out to outside outlet and cover by this is sentenced, the immersion of anti-sealing easily, can easily carry out the waterproof at this position.
The second invention is the insulating component using in the connection structure of power cable, possesses: the main part of tubular, and it has the connecting portion with the first metal tube an end; The second metal tube, its mode with another end of being embedded in aforementioned body portion arranges, with aforementioned body integrally; Conductor, it is arranged on the inside of aforementioned body portion, be arranged on to be embedded in the position of above-mentioned the second metal tube that the mode of aforementioned body portion arranges, and in the interior curve of aforementioned body portion, end is outstanding to the direction of above-mentioned the second metal tube from the end face of aforementioned body portion: and notch, it forms in the mode that separates the distance of regulation with respect to above-mentioned conductor on the circumferencial direction of aforementioned body portion at the outer peripheral face of aforementioned body portion.
According to the second invention, use at the connecting portion of power cable, make attended operation good, insulation reliably each other between the mutual screen of a pair of power cable can be made, and pulse voltage performance between the screen of conductor and terminal component can be guaranteed.In addition, can realize the miniaturization of connection structure and not make the external diameter of connection structure excessive.
Invention effect
According to the present invention, can provide that attended operation is good, the also connection structure etc. of good power cable of pulse performance between water proofing property and screen.
Brief description of the drawings
Fig. 1 represents that the B that connects structure 1 cutaway view, Fig. 2 is to view.
Fig. 2 is the cutaway view that represents to connect structure 1, and the A of Fig. 1 is to view.
Fig. 3 is the stereogram that represents insulating component 19.
Fig. 4 is the cutaway view that represents insulating component 19.
Fig. 5 is the stereogram that represents terminal component 39.
Fig. 6 is the cutaway view that represents terminal component 39.
Fig. 7 is the figure that represents the installation constitution of terminal component 39.
Fig. 8 is the figure that represents the position relationship of terminal component 39 and conductor 22.
Fig. 9 is the stereogram that represents anticorrosion cover 32.
Figure 10 is the figure that represents existing connection structure 100.
Embodiment
Below, on one side with reference to accompanying drawing on one side to embodiments of the present invention explanation.Fig. 1, Fig. 2 represent to connect structure 1 figure, Fig. 1 be the B of Fig. 2 to view, Fig. 2 is that the A of Fig. 1 is to view.Connecting structure 1 is power cable, the i.e. structure of the connecting portion of power cable 3a, 3b.Power cable 3a, 3b have conductor portion 5 in inside, in the periphery of conductor portion 5, be formed with in order insulation division 7, semiconductive portion 9, aluminium bellows 11, external jacket 13 from inner side.In addition, in the present invention, the formation of power cable 3a, 3b is not limited to illustrated example.
5 of conductor portion connect with conductor coupling portion 6.Conductor coupling portion 6 is such as metal sleeve etc.At the peripheral part of conductor coupling portion 6, in order to ensure insulating properties, be provided with rubber component 37.Rubber component 37 forms to guarantee near insulating properties conductor coupling portion 6 with the thickness of regulation., near the peripheral part (the substantial middle portion of rubber component 37) conductor coupling portion 6 is large-diameter portion.
Be provided as the copper pipe 15a of the first metal tube near mode covering conductor coupling portion at the peripheral part of rubber component 37, to protect each insulation division, conductor coupling portion 6 etc.The end of copper pipe 15a is to engage with the mode of aluminium bellows 11 conductings of power cable 3a.In addition, aluminium bellows 11 is protected inner conductor portion 5 etc., as the screen performance function of power cable 3a, 3b.
Being opposition side with the connecting portion of the aluminium bellows 11 of copper pipe 15a, end is provided with insulating component 19.Insulating component 19 is the member of tubular roughly.Insulating component 19 with form as one as copper pipe 15b and the conductor 22 of the second metal tube.The end face of the insulating component 19 that copper pipe 15b and conductor 22 are opposition side to the side engaging with copper pipe 15a is outstanding.In addition the particular content of aftermentioned insulating component 19.
Be configured in the power cable 3b side of the large-diameter portion of rubber component 37 for the protection of the copper pipe 15b of each insulation division etc., configure in the most mode that covers rubber component 37 with respect to copper pipe 15a, because the inside at copper pipe 15b does not configure rubber component 37 etc., so copper pipe 15b is configured to path compared with copper pipe 15a.In addition, because copper pipe 15a, 15b engage by insulating component 19, therefore, can mutual conduction.In addition, be provided with and cover 31 at copper pipe 15a, can be from waterproofing compound being flowed into the space being formed by copper pipe 15a, insulating component 19 and copper pipe 15b by lid 31 holes of closing.
The end of copper pipe 15b is identical with copper pipe 15a, to engage with the mode of aluminium bellows 11 conductings of power cable 3b.In addition, the utilization that engages of the end separately of copper pipe 15a, 15b and aluminium bellows 11 is for example welded and is carried out, and is wound around water blocking tape etc. in periphery.
Configure respectively screen 35a, 35b at aluminium bellows 11 separately of power cable 3a, 3b and the periphery of semiconductive portion 9.Screen 35a, 35b are for example metallic sieve (mesh).Screen 35a, 35b end separately configures in the mode being separated from each other in the periphery of rubber component 37., screen 35a, 35b not conducting each other.
At the peripheral part of insulating component 19, in circumferential locations different from conductor 22, notch 38 (Fig. 2) arranges in the mode of the axial elongation to power cable 3a, 3b.Configure terminal component 39 at notch 38.Terminal component 39 enters the notch 38 of insulating component 19, towards the axial arrangement of power cable 3a, 3b.
An end of terminal component 39 is connected with copper pipe 15a.In addition, another end of terminal component 39, at the outer circumferential side of copper pipe 15b, is connected with the first lead-out wire 25 as external conductor.That is, terminal component 39 is drawn to copper pipe 15b side by insulating component 19 from copper pipe 15a side, is connected with the lead-out wire 25 of coaxial cable 23.In addition the detailed content of aftermentioned terminal component 39.
The end of the conductor 22 arranging in the mode that is embedded in insulating component 19 with a part, connects by joint 24 as the second lead-out wire 27 of the inner conductor of coaxial cable 23.Joint 24 is for example sleeve, and conductor 22 is inserted calking with lead-out wire 27 from two ends.
In addition, conductor 22 utilizes guard tube or water blocking tape etc. to implement water-proofing treatment with the connecting portion of lead-out wire 25 from periphery with connecting portion, the terminal component 39 of lead-out wire 27.
In addition, draw to the outside that is connected structure 1 by coaxial cable 23 with lead-out wire 27 and the lead-out wire 25 of copper pipe 15a, 15b conducting, implement grounding etc.In addition, also lead-out wire 27 can be connected with terminal component 39, lead-out wire 25 is connected with conductor 22.
Connecting structure 1 peripheral part, in the mode of at least a portion of covering insulating component 19, anticorrosion cover 32 is being set.As shown in Figure 9, at anticorrosion cover 32, outlet 34a, 34b are set.The lead-out wire 27 being connected from outlet 34a to outside conductor introduction 22 or with conductor 22.In addition, from outlet 34b leading-out terminal member 39 or the lead-out wire 25 that is connected with terminal component 39.
In addition, as shown in dotted line in Fig. 1,2, with at least a portion of coating anticorrosive cover 32, so that the mode of covering copper pipe 15a, cover guard tube 12, implement to connect the water-proofing treatment of structure 1.In addition, although omitted particular content,, implement to omit illustrated water-proofing treatment between anticorrosion cover 32 and copper pipe 15b, conductor 22, terminal component 39 etc. etc., can anti-sealing to connecting, structure 1 is inner to be immersed.Now, due to not connecting in structure 1 not to the outstanding projection of peripheral part (portion of terminal 121a, the 121b in Figure 10 or the conductor that is connected with them etc.), easily stop water.
Next, insulating component 19 is described in detail.Fig. 3 is the stereogram of insulating component 19, and Fig. 4 is cutaway view.Insulating component 19 is members of tubular roughly, is made up of main part 41, copper pipe 15b, conductor 22 etc.Main part 41 is the roughly insulators cylindraceous that form with resins such as such as epoxy resin.An end of copper pipe 15b is embedded in the inside of main part 41, and main part 41 forms as one with copper pipe 15b.Copper pipe 15b is outstanding from an end face of main part 41.
At another distolateral setting of main part 41 and the connecting portion of copper pipe 15a, i.e. connecting portion 43.At the outer peripheral face of connecting portion 43, be provided for the groove 51 of the O type ring that configuration is used for obtaining water proofing property and the hole 49 for the attached end with fixing copper pipe 15a such as bolts.In addition, as mentioned above, be path because copper pipe 15b compares copper pipe 15a, therefore, connecting portion 43 is in a ratio of large footpath with copper pipe 15b.In this embodiment, the connecting elements that connecting portion 43 forms with the metal endless member processed being arranged by the mode that is used in main part 41 and imbeds one end forms.In addition, also can directly form in the end of main part 41 hole 49 and groove 51 at the attached end, will be made as connecting portion herein, and not utilize as described above metal endless member processed to form connecting portion 43.
As shown in Figure 4, in bonded conductor 22 such as the outer peripheral face utilization welding at the position of the copper pipe 15b arranging in the mode of imbedding main part 41.Conductor 22 is for example metal bar.Conductor 22 is in the interior curve of main part 41, outstanding from the end face of main part 41.That is, conductor 22 from the outer peripheral face of copper pipe 15b towards radial engagement, in the inside of main part 41 towards bending approximately 90 ° of the projected direction of copper pipe 15b.Therefore, the end of conductor 22 towards the power cable 3b (Fig. 1) connecting axially, towards giving prominence to respect to main part 41 direction identical with the projected direction of copper pipe 15b.
In addition, as shown in Figure 3, the position at the peripheral part of main part 41, separating at circumferencial direction with conductor 22 forms notch 38.Notch 38 is the position of the above-mentioned terminal component 39 of configuration (Fig. 2).
In addition, near the external diameter copper pipe 15b of main part 41 and the protuberance of conductor 22 is set as the required external diameter of configuration for conductor 22 and terminal component 39, is larger diameter.In addition, as long as the external diameter of connecting portion 43 sides of main part 41 has the MIN external diameter that can engage with copper pipe 15a, be less diameter., the maximum outside diameter of main part 41 considers that the configuration of conductor 22 and terminal component 39 determines.The maximum outside diameter portion of main part 41 is section circular, at the outer peripheral face of main part 41, does not form concavo-convex except notch 38.
Outer surface at the copper pipe 15b exposing from main part 41 arranges insulating barrier 47.Equally, at the outer surface of the conductor 22 exposing from main part 41, insulating barrier 45 is set.Insulating barrier 45,47 both can utilize dipping to form, and also can utilize the formation such as corrosionproof pipes or insulated tube or insulating tape.
Insulating barrier the 45, the 47th, in order to ensure and terminal component 39 between screen between pulse performance form.That is, although utilize insulating component 19 and copper pipe 15b and conductor 22 to insulate with the terminal component 39 of copper pipe 15a conducting,, form insulating barrier 45,47 in order to guarantee more reliably pulse performance between screen therebetween.In addition,, in order more to improve pulse performance between the screen of insulating component 19, near the conductor 22 exposing at the end face of main part 41 and from main part 41 and the border of copper pipe 15b, expect to arrange and omit illustrated insulation clay (putty) member.
Insulating component 19 is for example manufactured in following mode.First, implemented in advance the conductor 22 of bending machining in the outer peripheral face welding of the copper pipe 15b of moulding in advance.In addition, to connecting portion 43 processing grooves 51 and hole 49.The metal tube as copper pipe 15b (conductor 22) and connecting portion 43 obtaining processing is like this arranged to respectively mould, in mould, flows into resin, and thus, insulating component 19 is by one cast molding.
In addition, in the hole 49 that directly forms the attached end in the end of main part 41 as described above with groove 51 and be made as connecting portion, can be when by main part 41 moulding the hole 49 and groove 51 at the attached end of moulding simultaneously.In addition, after the main part 41 that has been shaped, also can utilize the hole 49 and groove 51 that are processed to form the above-mentioned attached end.But the manufacture method of insulating component 19 is not limited to the method.
Next, terminal component 39 is elaborated.Fig. 5 is the stereogram that represents terminal component 39, and Fig. 6 is the cutaway view that represents terminal component 39.Terminal component 39 is for example metal conductor.Terminal component 39 at one end side arranges flat portion of terminal 59, the round bar portion 53 being connected with the first lead-out wire in another distolateral setting.Portion of terminal 59 is connected by flat part 55 with circle bar portion 53.The external surface shape of terminal component 39 is, portion of terminal 59 be rectangle with flat part 55, and circle bar portion 53 is circles.In portion of terminal 59, hole 63 is set.Hole 63 for being connected of copper pipe 15a described later flange part 69 (Fig. 7).
In addition, in this application " the first metal tube ' is connected ' with the portion of terminal of terminal component " refer to electrical connection, as long as the portion of terminal 59 of terminal component 39 is electrically connected with copper pipe 15a, no matter is indirectly to connect by flange part 69 and other member, or directly connection can.
Portion of terminal 59 is utilized welding to wait and is engaged with the flat part 55 being formed by planar plate members.Flat part 55 is for example solid of section rectangle roughly.In addition, portion of terminal 59 also can form as one with flat part 55.Another end of flat part 55 engages with the round bar portion 53 forming with round metal bar.Circle bar portion 53 one end cut become semicircle, utilize herein welding to wait and engage flat part 55.In addition, also circle bar portion 53 can be configured as to one with flat part 55.
The end (end of terminal component 39) of circle bar portion 53 is and the connecting portion of the lead-out wire 25 (Fig. 2) of coaxial cable 23.
At 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 formed by dipping, also can utilize the formation such as corrosionproof pipes or insulated tube or insulating tape.As described above, insulating barrier 61 in order to ensure and conductor 22 or copper pipe 15b between screen between pulse performance and forming.In addition, for the insulating barrier 61 of terminal component 39 also can at least be formed at position from being configured in notch 38 to and the connecting portion of lead-out wire 25 between outer peripheral face, instead of be formed at the outer surface entirety of terminal component 39.
Fig. 7 is the figure that represents the installation constitution of terminal component 39.In the end of copper pipe 15a, engage the flange part 69 of ring-type according to necessity utilization welding etc.Flange part 69 is conductors of metal etc.Terminal component 39 is connected with flange part 69 with bolt 67 grades of through hole 63., terminal component 39 is to engage with the mode of copper pipe 15a conducting.Therefore, copper pipe 15a, flange part 69 and the whole current potentials of connecting portion 43 are identical.In addition, flange part 69 and connecting portion 43 are the connecting portion of copper pipe 15a and insulating component 19.
In addition, the position configuring with respect to terminal component 39, at 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 and connecting portion 43 are by screwing togather the perforation bolt (dotted line in figure) of flange part 69 and the hole 49 of connecting portion 43 to fix.That is, the flange part 69 of copper pipe 15a is axial with it, and the mode that outer peripheral face of the connecting portion 43 of inner circumferential surface and insulating component 19 joins is chimeric with connecting portion 43, from the outer circumferential side of mutual clinch, to engaging with bolt etc. with axially vertical direction.Now, between connecting portion 43 and flange part 69, utilize O type ring 65 sealings that are configured in groove 51.
Terminal component 39 is drawn in copper pipe 15b side in the mode that strides across insulating component 19 (main part 41) from copper pipe 15a side.Now, terminal component 39 is configured in the notch 38 that is formed at main part 41.Notch 38 is darker than the external diameter of terminal component 39.Therefore the terminal component 39 that, is configured in notch 38 can be from the most peripheral of insulating component 19 to radially outstanding.
End at terminal component 39 (circle bar portion 53) connects lead-out wire 25.In this case, for example, as long as sleeve is inserted in the end of lead-out wire 25 and the end of circle bar portion 53, by calking sleeve splicing ear member 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.In addition, terminal component 39 can be also additive method with the method for attachment of lead-out wire 25.
As described above, near the boundary portion of the flat part 55 of terminal component 39 and circle bar portion 53, be the change point of section shape.The boundary portion (connecting portion of planar plate members and circle bar member) of this flat part 55 and circle bar portion 53 is positioned at the peripheral part of connecting portion 43., the connecting portion (position that, outer shape changes) of the flat part 55 of terminal component 39 and circle bar portion 53 is positioned at the periphery of the conductor identical with copper pipe 15a current potential.By like this, can guarantee pulse performance between higher screen.Described in it be the reasons are as follows.
In the time that the position that the flat part 55 of terminal component 39 section shape such from circle bar portion 53 changes is configured in the periphery of insulating component 19 or the different copper pipe 15b of current potential, in air, form inhomogeneous electric field concentrated area, insulation property reduce.On the other hand, in the time the change point of section shape as described above being configured in to the periphery of connecting portion of the copper pipe 15a identical with terminal component 39 current potentials or copper pipe 15a and insulating component 19, can relax the formation of this inhomogeneous electric field concentrated area.
Like this, in the present embodiment, because the junction surface of flat part 55 and circle bar portion 53 is configured in the periphery of the connecting portion 43 identical with copper pipe 15a current potential, therefore, can make insulation property improve, guarantee pulse performance between higher screen.In addition, in the situation that not using flange part 69 or connecting portion 43 ground that copper pipe 15a is directly engaged with insulating component 19, as long as above-mentioned section shape change point is configured in to the periphery of copper pipe 15a.In addition, as long as identical with copper pipe 15a current potential, also above-mentioned section shape change point can be configured in to the periphery of flange part 69.
Fig. 8 is the cutaway view that the copper pipe 15b side of the state from having configured terminal component 39 is observed.In addition, the formation of inner power cable etc. is omitted diagram.As mentioned above, separate predetermined angular with terminal component 39 (notch 38) at the circumferencial direction of main part 41 and configure (arrow C in figure) to be embedded in conductor 22 that the mode of main part 41 arranges.In addition, conductor 22 is configured in respect to the center that is connected structure, on roughly the same circumference with terminal component 39.
In addition, as the distance between conductor 22 and terminal component 39, as long as there is the distance that can guarantee pulse performance between screen.For example, expect, with respect to insulating component 19 center of (connecting structure 1), to be separated from each other more than 90 °.
In addition, the gap that produce and terminal component 39 at notch 38, for reinforcement and centering that the insulation of terminal component 39 covers, also can fill clay etc.
Next, anticorrosion cover 32 is described.Fig. 9 is the stereogram that represents anticorrosion cover 32.Anticorrosion cover 32 is for example resin.As mentioned above, anticorrosion cover 32 is arranged on the periphery of insulating component 19, prevents that water from immersing connection structure 1 inside.Anticorrosion cover 32 arranges the roughly reducing diameter part 71 of tubular in an end face side of wide diameter portion 73.In the end face portion of wide diameter portion 73 towards with reducing diameter part 71 equidirectionals, roughly outlet 34a, the 34b of tubular being set.
Wide diameter portion 73 is the positions that cover the periphery of the main part 41 of insulating component 19., the internal diameter of wide diameter portion 73 is corresponding to the external diameter of the outstanding 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 the positions that cover at least a portion of copper pipe 15b., the internal diameter of reducing diameter part 71 is corresponding to the external diameter of copper pipe 15b.
Outlet 34a, 34b separate predetermined angular and form on the circumferencial direction of anticorrosion cover 32.Outlet 34a is the position that conductor 22 or the lead-out wire 27 that is connected with conductor 22 are drawn.In addition, outlet 34b is the position that terminal component 39 or the lead-out wire 25 that is connected with terminal component 39 are drawn., outlet 34a, 34b are that draw to the outside that connects structure 1 and copper pipe 15a, the 15b lead-out wire 27 (conductor 22), the position of lead-out wire 25 (terminal component 39) of conducting respectively the inside of connection from covering with anticorrosion cover 32 structure 1.
Peripheral part at anticorrosion cover 32 does not have to radially outstanding position.Therefore,, in the time that the periphery of the wide diameter portion 73 of anticorrosion cover 32 covers the guard tubes such as collapsible tube, can carry out to heavens water-proofing treatment.In addition, the shape retention itself having to a certain degree due to anticorrosion cover 32, therefore, when cover soft guard tube etc. from periphery, outlet 34a, 34b can not damage by pressure near end separately, the external force of the hydraulic pressure can prevent due to variations in temperature or immersion time etc., the coincidence part part distortion of this guard tube and outlet 34a, 34b, sealing worsens.
Above, according to present embodiment, can utilize insulating component 19 that copper pipe 15a and copper pipe 15b are insulated reliably.In addition, because main part 41 and the copper pipe 15b of insulating component 19 form as one, therefore, with respect to existing method, can omit the operation that is connected of a copper pipe and insulating component.Therefore, can reduce working hour.In addition, can reduce the use member of the containment member or the bolt etc. that connect required O type ring etc.And, due to the attended operation that does not need main part 41 with copper pipe 15b in the time constructing, thus compared with the past, can reduce the immersion risk at the water at this position.
In addition, the flange part 69 of copper pipe 15a, axially to insert the connecting portion 43 of insulating component 19, is being fixedly connected with to portion 43 with axially vertical direction with bolt from outer peripheral face.Therefore, compared with such situation that engages copper pipe and insulating component with flange part in the past, can reduced outside diameter.In addition, with compared with the joint of flange part, be easy to guarantee the space for the joint of bolt etc., operability is also good.
In addition, at insulating component 19, arrange in the mode of imbedding with the conductor 22 of copper pipe 15b conducting, conductor 22 is in the interior curve of main part 41, outstanding from the end of insulating component 19.Therefore, on the outer surface without the copper pipe 15b being connected with lead-out wire 27, terminal etc. is set, in addition, conductor 22 is not outstanding to the outer peripheral face of insulating component 19.
In addition, because lead-out wire 27 is connected with the end of conductor 22, therefore, can use sleeve etc. easily to connect, with being connected of existing terminal base etc. to compare attended operation easy.In addition, compared with existing splicing ear etc., can simplify the shape of conductor 22 and the connecting portion of lead-out wire 27, not form complicated shape.Therefore, at connecting portion, guard tube contraction installation or coiling water blocking tape geometric ratio are easier to, can carry out reliably the waterproof of connecting portion.
In addition, to be configured in the long dimensional directions of power cable with the terminal component 39 of copper pipe 15a conducting, use in the mode that connects insulating component 19 the copper pipe 15b side that leads, thus, the lead-out wire of coaxial cable 23 25 and the connecting portion of terminal component 39 can be configured in to the outer circumferential side of copper pipe 15b.Therefore, do not need to make portion of terminal etc. to erect in the periphery of copper pipe 15a.Therefore, can dwindle the external diameter that connects structure 1.In addition, due to as long as connect lead-out wire 25 in the end of terminal component 39 with sleeve etc., so compare with being connected of existing and terminal base etc., attended operation ratio is easier to.
In addition, owing to forming terminal component 39 by engaging planar plate members with circle bar member, therefore, of terminal component 39 end can be made as to flat part 55, another end is made as to round bar portion 53.Because flat part 55 has par, therefore, can easily engage with portion of terminal 59.In addition, because flat part 55 has par, therefore, flat part 55 itself is brought into play to function also than being easier to as portion of terminal.Therefore, easily splicing ear member 39 and copper pipe 15a.
In addition, owing near the section shape change point boundary portion of the flat part of terminal component 39 55 and circle bar portion 53 being configured in to the periphery of the connecting portion 43 identical with terminal component 39 current potentials, therefore, can relax the formation of airborne inhomogeneous electric field concentrated area.Thus, can guarantee pulse performance between higher screen.
In addition, terminal component 39, by being formed on the notch 38 of main part 41 peripheries of insulating component 19, is drawn from copper pipe 15a side direction copper pipe 15b side.Therefore, terminal component 39 can be more not side-prominent to periphery in the maximum outside diameter portion than insulating component 19.Therefore, can dwindle the external diameter that connects structure 1.
In addition, do not form at the outer peripheral face of insulating component 19 produced by terminal component 39 concavo-convex, and, as mentioned above, due to terminal component 39 and conductor 22 are drawn to copper pipe 15b side from the end face of the copper pipe 15b side of insulating component 19, therefore, can utilize anticorrosion cover 32 to make these positions hide more to heavens water.
In addition, conductor 22 configures at circumferencial direction in insulating component 19 discretely with terminal component 39.Therefore, can guarantee reliably can necessary distance in order to ensure pulse feature between screen.
In addition, form respectively insulating barrier 45,47 at the outer peripheral face of the conductor 22 exposing from the end face of main part 41 and the outer peripheral face of copper pipe 15b.In addition, at the outer peripheral face of terminal component 39, insulating barrier 61 is set.Therefore, can guarantee reliably pulse performance between the screen between terminal component 39 and copper pipe 15b and conductor 22.
In addition, utilize anticorrosion cover 32, can cover conductor 22 and the connecting portion of lead-out wire 27 and the connecting portion of terminal component 39 and lead-out wire 25.Therefore, can improve the anticorrosive property at this position.In addition, at anticorrosion cover 32, a pair of outlet 34a, 34b are set.Therefore, conductor 22 (lead-out wire 27) can be fetched into outside with terminal component 39 (lead-out wire 25) both sides from the inside that is connected structure.
Particularly, the closure of conductor 22 and terminal component 39 is all the axial of power cable, can take out towards a direction (power cable 3b direction).Therefore, the processing of lead-out wire 25 and lead-out wire 27 is also than being easier to.Therefore, operability is also good.
Above, on one side embodiments of the present invention are illustrated on one side with reference to accompanying drawing, still, the scope of technology of the present invention is not affected by above-mentioned execution mode.As long as those skilled in the art, in the category of the thought of the technology that obviously can record in patent claims, expect various modifications or modification, and know that these also belong to the scope of technology of the present invention certainly.
For example, form the shape that connects structure each member of 1 etc. and be not limited to illustrated example.In addition, owing to having guaranteed water proofing property or insulating properties, omit illustrated water blocking tape or insulating tape etc. so also can arrange rightly.In addition, conductor 22, circle bar portion 53, flat part 55 are all made up of solid member, still, also can form with the body of hollow.
description of reference numerals
1: connect structure; 3a, 3b: power cable; 5: conductor portion; 6: conductor coupling portion; 7: insulation division; 9: semiconductive portion; 11: aluminium bellows; 12: guard tube; 13: external jacket; 15a, 15b: copper pipe; 19: insulating component; 22,22a: conductor; 23: coaxial cable; 24: joint; 25: lead-out wire; 27: lead-out wire; 31: lid; 32: anticorrosion cover; 34a, 34b: outlet; 35a, 35b: screen; 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 type ring; 67: bolt; 69: flange part; 71: reducing diameter part; 73: wide diameter portion; 100: connect structure; 103a, 103b: power cable; 105: conductor portion; 106: conductor coupling portion; 107: insulation division; 109: semiconductive portion; 111: aluminium bellows; 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: stuffing box; 131,133: lid; 135a, 135b: screen; 137: rubber component.
Claims (10)
1. the connection of power cable structure, is characterized in that possessing:
The first metal tube, the screen conducting of itself and a power cable;
The second metal tube, the screen conducting of itself and another root power cable;
The first lead-out wire, itself and above-mentioned the first metal tube conducting;
The second lead-out wire, itself and above-mentioned the second metal tube conducting; And
Insulating component, it has the cylindrical body portion that the mode so that the end of above-mentioned the second metal tube is imbedded arranges,
Above-mentioned the first metal tube covers connecting portion each other of power cable, around above-mentioned another root power cable, with above-mentioned insulating component directly or be connected by connecting elements, utilize above-mentioned insulating component to make above-mentioned the first metal tube and above-mentioned the second metal tube insulation.
2. the connection of power cable according to claim 1 structure, is characterized in that,
Position at above-mentioned the second metal tube arranging in the mode that is embedded in aforementioned body portion is provided with conductor,
Above-mentioned conductor is in the interior curve of aforementioned body portion, outstanding to the direction of the power cable of above-mentioned another root side from the end face of aforementioned body portion, is connected with above-mentioned the second lead-out wire.
3. the connection of power cable according to claim 2 structure, is characterized in that,
In the periphery of aforementioned body portion, be formed with notch in the mode that separates predetermined distance with respect to above-mentioned conductor on the circumferencial direction of aforementioned body portion,
Be connected with the portion of terminal of terminal component at above-mentioned the first metal tube,
Above-mentioned terminal component, is drawn in above-mentioned the second metal tube side by above-mentioned notch from above-mentioned the first metal tube side, is connected with above-mentioned the first lead-out wire.
4. the connection of power cable according to claim 3 structure, is characterized in that,
The external surface shape of above-mentioned terminal component, from the shape of portion of terminal side to the part that is connected the change of shape of side with the first lead-out wire, is positioned at the peripheral part of above-mentioned the first metal tube or above-mentioned connecting elements.
5. the connection of power cable according to claim 3 structure, is characterized 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.
6. the connection of power cable according to claim 3 structure, is characterized in that,
At least a portion of the outer peripheral face of above-mentioned terminal component is covered by insulating barrier.
7. the connection of power cable according to claim 3 structure, is characterized in that,
The entirety that connects structure is covered by anticorrosion cover and guard tube, and this anticorrosion cover at least covers a part for above-mentioned insulating component and above-mentioned the second metal tube, and this guard tube at least covers the outer peripheral face of above-mentioned the first metal tube,
Be respectively arranged with and make above-mentioned conductor and above-mentioned terminal component be drawn out to outside outlet at above-mentioned anticorrosion cover.
8. the connection of power cable according to claim 2 structure, is characterized in that,
The outer peripheral face of the above-mentioned conductor exposing from aforementioned body portion is covered by insulating barrier.
9. the connection of power cable according to claim 1 structure, is characterized in that,
The outer peripheral face of above-mentioned the second metal tube exposing from aforementioned body portion is covered by insulating barrier.
10. the insulating component using in the connection of power cable structure, is characterized in that possessing:
The main part of tubular, it has the connecting portion with the first metal tube an end;
The second metal tube, its mode with another end of being embedded in aforementioned body portion arranges, with aforementioned body integrally;
Conductor, the position of above-mentioned the second metal tube that its mode that is arranged on to be embedded in aforementioned body portion arranges, and in the interior curve of aforementioned body portion, end is outstanding to the direction of above-mentioned the second metal tube from the end face of aforementioned body portion; And
Notch, it forms in the mode that separates the distance of regulation with respect to above-mentioned conductor on the circumferencial direction of aforementioned body portion at the outer peripheral face of aforementioned body portion.
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 | ||
| JP2013-250242 | 2013-12-03 | ||
| JP2013250242A JP5835716B2 (en) | 2013-12-03 | 2013-12-03 | Power cable connection structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103986112A true CN103986112A (en) | 2014-08-13 |
| CN103986112B CN103986112B (en) | 2017-03-01 |
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| 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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| CN (1) | CN103986112B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112368946A (en) * | 2018-07-27 | 2021-02-12 | 住友电气工业株式会社 | Communication system and communication device |
| CN115882416A (en) * | 2021-01-21 | 2023-03-31 | 日立金属株式会社 | Insulating tube unit and power cable connection structure for railway vehicle |
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| CN115882416B (en) * | 2021-01-21 | 2023-12-12 | 日立金属株式会社 | Insulating tube unit and power cable connection structure for railway vehicle |
| CN117674007A (en) * | 2021-01-21 | 2024-03-08 | 株式会社博迈立铖 | Insulation tube unit for railway vehicle and power cable connection structure for railway vehicle |
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| CN103986112B (en) | 2017-03-01 |
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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. |