CN102570375A - High-voltage three-phase distribution cable branch joint - Google Patents
High-voltage three-phase distribution cable branch joint Download PDFInfo
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- CN102570375A CN102570375A CN2012100122461A CN201210012246A CN102570375A CN 102570375 A CN102570375 A CN 102570375A CN 2012100122461 A CN2012100122461 A CN 2012100122461A CN 201210012246 A CN201210012246 A CN 201210012246A CN 102570375 A CN102570375 A CN 102570375A
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Abstract
The invention relates to a high-voltage three-phase distribution cable branch joint, which is used for urban underground distribution cables. When the high-voltage three-phase distribution cable branch joint is used in a main distribution line, two main line plugs are respectively connected with one end part of one three-phase main cable and are respectively inserted into two opposite connecting ports arranged on a T-shaped inserting joint, and three cone inserting rods in the main line plugs correspondingly connected with three single-phase main cables are respectively inserted into three main line inserting holes arranged in the connecting ports. At the moment, the branch joint is used as a butt joint of the two three-phase main cables. When the branch joint is used as a three-phase branching joint, the third connecting port of the T-shaped inserting joint is a branch port, branch plugs are connected with the end parts of three single-phase branch cables, and three inserting rods of the branch plugs are correspondingly inserted into three branch inserting holes of the branch port of the T-shaped inserting joint. The high-voltage three-phase distribution cable branch joint has a simple structure and reliable connection, and the construction is convenient and the manpower and material resources are saved during midway entrance electricity-consumption.
Description
Technical field
The present invention relates to solve a kind of high pressure three-phase distribution cable branch joint that city underground distribution cable line carries out branch.
Background technology
In urban network restructuring, the main line of power transmission and distribution is direct-burried or place in the cable trough generally.Therefore receive environmental constraints, be in existing underground transmission & distribution cable line, it is very difficult increasing a branched line.On the other hand, threephase cable hardness is high, and is not flexible, is difficult to move, and construction is caused difficulty.
Existing underground electric line all is to solve the circuit branch problem with ground feeder pillar (station).It is preset that yet ground feeder pillar (station) generally needs, and cost height and floor space are big; In case need prop up at main line midway and connect the electricity consumption of opening an account, must be from remote cabling or install feeder pillar (station) in addition additional and solve, very inconvenient.
Summary of the invention
Shortcoming to existing underground electric line the objective of the invention is to be provided with a kind of high pressure three-phase distribution cable branch joint rational in infrastructure, safe and reliable, easy for installation, realizes the butt joint of threephase cable on the main line; Can also connect branch cable through the branch support interface that is provided with, solve the Add User problem of electricity consumption of main line midway.
In order to achieve the above object, technical scheme of the present invention provides a kind of high pressure three-phase distribution cable branch joint.In the said branch joint, comprise a T type connection-peg, the main line plug that two structures are identical, be oppositely arranged, and a branched line plug; Wherein,
Said two main line plugs are connected the end of a three-phase leader cable separately; Two said main line plugs are inserted into respectively on the said T type connection-peg in two connectors that are oppositely arranged, to form the butt joint of these two three-phase leader cables;
In each said main line plug, further be provided with:
Tail cover, three-phase leader cable are located in the said tail cover, and are divided into three single-phase leader cables;
Afterbody swivel nut, its two ends are set in the outside of outside and the said tail cover rear end of the waterproof jacket that is provided with on the said three-phase leader cable front portion respectively, and said afterbody swivel nut and said tail cover are fastenedly connected;
The middle part overcoat, three said single-phase leader cables pass in the overcoat of said middle part, and with the corresponding connection of three cone inserted links that is arranged on said main line plug inside front end; The front end correspondence of three said cone inserted links is inserted in three main line jacks that are provided with in the connector of said T type connection-peg;
Middle part swivel nut, its two ends are set in said tail cover front end and overcoat rear end, said middle part outside, contacted position respectively, and the middle part adapter sleeve that said middle part swivel nut and overcoat rear end, said middle part are embedded is fastenedly connected;
Anterior swivel nut, its two ends are set in said middle part overcoat front end and outside, the contacted position of said T type connection-peg connector respectively, and the anterior adapter sleeve that said anterior swivel nut and T type connection-peg connector rear end are embedded is fastenedly connected;
Also offer a bifurcations on the said T type connection-peg, branch road plug correspondence was inserted in the said bifurcations in said minute; When not connecting said minute branch road plug, said bifurcations insulation sealing; Be provided with branch's jack of three-phase in the said bifurcations, the three-phase inserted link corresponding inserted that the front end of said minute branch road plug inside is provided with is in the said branch jack of three-phase; Three said single-phase branch cables penetrate in the branch branch road plug, and the corresponding rear end that is connected to the inserted link of three-phase;
Also be provided with the separated time swivel nut on the said minute branch road plug; Its two ends are set in the outside of the bifurcations rear end of said minute branch road plug head and said T type connection-peg respectively, and the separated time adapter sleeve that said separated time swivel nut and said T type connection-peg bifurcations rear end are embedded is fastenedly connected.
The back of said tail cover have one group be oppositely arranged on drop wire clip, after the three-phase leader cable passes the breach that forms between the drop wire clip, through some screws with outside fastening at the three-phase leader cable of drop wire clip on this group;
By three single-phase leader cables that the three-phase leader cable is told, also the front portion in said tail cover is passed three perforates of each self-forming on separated time awl, separated time latch, the distributor plate successively;
Three said single-phase leader cables wear said separated time separately and bore after the front portion of three perforates, three lock sleeve correspondences are arranged on the outside of three single-phase leader cables; Again said separated time latch is arranged on the outside rear end of three said lock sleeves and fastening, said distributor plate is arranged on the outside front end of three said lock sleeves and fastening.
Be provided with three in the overcoat of said middle part and connect insulating case; Each rear end that connects in the insulating case is provided with stress cone; Each front portion that connects in insulating case is provided with the stress cover, make that each single-phase leader cable passes from the tail cover after, pass stress cone, corresponding again being inserted in said connection insulating case and the anterior stress cover thereof; Also be provided with positioning sleeve in the overcoat of said middle part, from the outside three front portions that connect insulating case wrapped up together.
Each single-phase leader cable front end is for exposing the heart yearn that is provided with, and said heart yearn is connected with a corresponding cone inserted link in said stress cover 11; Each said cone inserted link further includes:
Copper core adapter sleeve, said heart yearn are inserted in the rear end of said copper core adapter sleeve;
The copper core connector of taper, the front end of said copper core adapter sleeve are inserted in the rear portion of copper core connector of taper;
Screw, said screw is connected to the front portion of said copper core adapter sleeve from the front end in the copper core connector always, and both are coupled together;
Between the heart yearn of said single-phase leader cable, copper core adapter sleeve, copper core connector, form the conduction contact.
In said T type connection-peg set inside several connecting rods are arranged, exceed the part of T type connection-peg rear end on each said connecting rod, when butt joint, plug in the overcoat of said middle part; And the rear end of each said connecting rod is provided with screw rod, and screw rod makes the rear end of screw rod be connected with a nut after passing the positioning sleeve in the overcoat of said middle part.
Each said connection insulating case and said cone inserted link surpass said middle part overcoat foremost respectively foremost, and all are inserted in the main line jack corresponding on the said T type connection-peg connector;
Wherein, each said cone inserted link directly is inserted into and forms the conduction contact in the copper core of a corresponding phase in the main line jack; With each self-corresponding three-phase copper core of two three-phase leader cables that docked mutual conduction in said T type connection-peg;
Also correspondence is provided with insulating barrier outside each phase copper core, between the front end of the insulating barrier rear end of each phase copper core and said stress cover, also is provided with the packing ring that is set on the cone inserted link; The front end of said connection insulating case is extended with certain distance in said main line jack, and the front end of said connection insulating case is plugged between the outer wall and said insulating barrier of T type connection-peg.
In three branch's jacks of the bifurcations of said T type connection-peg, correspondence is provided with three separated time copper cores, each phase separated time copper core in T type connection-peg with the three-phase leader cable that is docked in corresponding one mutually copper core mutual conduction;
In each branch's jack, the rear portion of separated time copper in-core is provided with spring coil, and the rear end of spring coil contacts with the front end of a separated time cover, and the first half of said separated time cover also is arranged on said separated time copper in-core;
The rear end of each said separated time copper core contacts with the front end of a separated time overcoat, and the latter half of said separated time cover is arranged in the said separated time overcoat; At said separated time copper core and separated time overcoat outer setting the insulating barrier that separates three is arranged;
The aperture position of each branch's jack on the said T type connection-peg also is provided with cover in the separated time, and the first half of cover is positioned at branch's jack in the said separated time, and the front end of cover contacts with the rear end of said insulating barrier in the separated time; The latter half of cover is set on the corresponding inserted link of said T type connection-peg in the said separated time.
In the said minute branch road plug, the heart yearn that each single-phase branch cable front end exposes is inserted into the rear portion of a corresponding phase inserted link; Between each phase inserted link and branch branch road plug, be provided with the separated time insulating case; Said separated time insulating case is positioned at latter half outside and the heart yearn of cable and the outside of inserted link link position of said separated time cover;
The front portion of each phase inserted link is when inserting corresponding branch jack; Pass cover, insulating barrier, separated time overcoat, separated time cover, spring coil in the said separated time successively; Finally make said inserted link part foremost be inserted into said separated time copper in-core, and the heart yearn in the inserted link is contacted with said separated time copper core formation conduction.
Be provided with first O type cushion rubber between said tail cover rear end and the contacted surface of afterbody swivel nut;
Be provided with second O type cushion rubber between adapter sleeve rear end, said middle part and the contacted surface of said tail cover front end;
Said middle part overcoat also be provided with anterior back-up ring foremost, be provided with the 3rd O type cushion rubber between the contacted surface of anterior adapter sleeve of itself and said T type connection-peg connecting hole rearmost end;
The branch road plug was provided with the separated time back-up ring foremost in said minute, was provided with the 4th O type cushion rubber between the contacted surface of separated time adapter sleeve of itself and said bifurcations rearmost end.
High pressure three-phase distribution cable branch joint according to the invention has solved the problem that existing underground electric line is difficult to be provided with branched line, the invention has the advantages that: the banjo fixing butt jointing that can be used as threephase cable on the power transmission and distribution main line; Owing to adopted the cone inserted link, shortened the length of butt joint, the cone inserted link child of both sides needs the 60mm space just can dock relatively; After threephase cable butt joint, fastening at the inner screw rod etc. of using of joint of the present invention, carry out fastening, safe and reliable at joint outer setting swivel nut.Simultaneously, the present invention can also connect direct insertion branch branch road plug as the three-phase branch joint, and it is little in construction, to turn over the ditch area, and labour intensity alleviates, and has also practiced thrift manpower and materials.
Description of drawings
Fig. 1 is the general structure sketch map after various piece connects in the high pressure three-phase distribution cable branch joint according to the invention;
Fig. 2 is the STRUCTURE DECOMPOSITION figure of high pressure three-phase distribution cable branch joint shown in Figure 1;
Fig. 3 is the structure enlarged drawing of high pressure three-phase distribution cable branch joint left-half shown in Figure 1, wherein shows T type connection-peg respectively with the main line plug and divide the profile of the corresponding link position of branch road plug.
Embodiment
Below in conjunction with description of drawings embodiment of the present invention.
Like Fig. 1, shown in Figure 2; In the high pressure three-phase distribution cable branch joint according to the invention (hereinafter to be referred as branch joint); Comprise the main line plug that 1, two structure of T type connection-peg as the three-phase assembly is identical, be oppositely arranged, and a direct insertion branch branch road plug 42.Hereinafter with on said main line plug and the said minute branch road plug 42; End near corresponding connector on the T type connection-peg 1 is called " front end "; End away from corresponding connector on the T type connection-peg 1 is called " rear end ", and for example with direction shown in scheming, the right-hand member of the main line plug in the left side is its front end; Dividing the upper end of branch road plug 42 is its front end, and other are analogized.
When branch joint according to the invention is used for the power transmission and distribution main line; Make said two main line plugs be connected the end of one of them three-phase leader cable separately; And these two main line plugs are inserted into respectively on this T type connection-peg 1 in two connectors that are oppositely arranged; Make in each main line plug three cone inserted links with three corresponding connections of single-phase leader cable, be inserted into respectively in three main line jacks that are provided with in the corresponding connector; At this moment, the present invention uses as the banjo fixing butt jointing of these two three-phase leader cables.
In addition, the 3rd connector of said T type connection-peg 1 is bifurcations, if do not need break-in branch, then with this bifurcations insulation sealing.Break-in branch if desired just is connected said minute branch road plug 42 end of branch cable, and; Three inserted links 40 with minute branch road plug 42; Correspondence is inserted in three branch's jacks of bifurcations of said T type connection-peg 1, and at this moment, the present invention also uses as the three-phase branch joint.
Cooperation is referring to Fig. 1 ~ shown in Figure 3; Three-phase leader cable is therein in the tail cover 22 of a main line plug; Be divided into three single-phase leader cables, particularly, the back of said tail cover 22 have one group be oppositely arranged on drop wire clip 25A, 25B; After making the leader cable of having removed the outermost layer protective sleeve pass the breach that forms between drop wire clip 25A, the 25B, the last drop wire clip 25A of this group, 25B is fastening in the leader cable outside through some screws 25.The outer cover of three-phase leader cable is provided with the waterproof jacket 26 of rubber, this waterproof jacket 26 be from the rear end of last drop wire clip 25A, 25B backward certain distance arrange.
One afterbody swivel nut 24 promptly is arranged on the outside of drop wire clip 25A, 25B present position, and these afterbody swivel nut 24 1 ends are fixedly connected with said tail cover 22, and the other end is set in the outside of waterproof jacket 26 front portions.Said afterbody swivel nut 24 all is a double-decker with said tail cover 22, and for example skin is a rubber, and internal layer is a stainless steel material.Said tail cover 22 be provided with O type cushion rubber 23 being connected of afterbody swivel nut 24 between the contact-making surface with water-proof function, can be to overlap at tail to offer groove on 22 said O type cushion rubber 23 is installed.
There is the separated time awl 21 of rubber front portion in said tail cover 22, is formed with three perforates above; After each single-phase leader cable passes corresponding perforate, a more copper lock sleeve 20 is arranged on the outside of single-phase leader cable, at this moment, remains with the copper shield of its outer surface on the said single-phase leader cable.Then, again with the lock sleeve 20 of three said single-phase leader cables and outside accordingly, successively be inserted into three perforates of offering on the separated time latch 19, and in three perforates of offering on the distributor plate 18; The said separated time latch 19 and the distributor plate 18 that connect aluminum again by some screw 18A, 19A respectively; Make said separated time latch 19 fastening, thereby carry out fastening to each single-phase leader cable through said separated time latch 19 in the rear end of three said lock sleeve 20 outsides; Similarly, make said distributor plate 18 fastening at the front end of said lock sleeve 20 outsides of three single-phase leader cables.Said separated time awl 21, separated time latch 19, distributor plate 18 and each lock sleeve 20; Each free two part is formed; Said two parts of above-mentioned each part are oppositely arranged, and are forming or three perforates that supply single-phase leader cable to pass on this part between these two parts.
After three single-phase leader cables passed from tail cover 22, corresponding again wearing in the middle part overcoat 13 of a rubber was connected each single-phase leader cable respectively with corresponding cone inserted link in this middle part overcoat 13.Concrete; In said middle part overcoat 13, be provided with the connection insulating case 12 of three silica gel; Each connects the stress cone 15 that insulating case 12 interior rear ends are provided with semi-conducting rubber; Said stress cone 15 rear ends and said separated time awl 21 and wherein the front end of distributor plate 18 contact, make that each single-phase leader cable passes from the distributor plate 18 of tail cover 22 after, correspondence is passed stress cone 15 and is got in the said connection insulating case 12.
The rear end of overcoat 13 is embedded with stainless middle part adapter sleeve 14 at said middle part; With the two ends of a middle part swivel nut 17, be set in the front end of said tail cover 22 respectively, reach said middle part adapter sleeve 14 and be exposed on the part outside overcoat 13 rear ends, middle part, and said middle part swivel nut 17 is connected with said middle part adapter sleeve 14.Adapter sleeve 14 rear ends, said middle part and said tail overlap that contacted position is provided with the O type cushion rubber 16 that waterproof is used between 22 front ends, for example are on the flange face of said middle part adapter sleeve 14, to offer groove said O type cushion rubber 16 is installed.Said middle part swivel nut 17 can be a double-decker, and for example skin is a rubber, and internal layer is a stainless steel material.
Each connects the stress cover 11 that front portions in insulating case 12 are provided with semiconductor silica gel, make that each single-phase leader cable passes from stress cone 15 after, correspondence is inserted in said connection insulating case 12 and the anterior stress cover 11 thereof.Behind the certain distance, the insulated outer surface of single-phase leader cable is stripped from being inserted into said stress cover 11, overlaps the rear end in the 11 interior copper core adapter sleeves 9 thereby the heart yearn that this cable front end exposes is inserted into stress; The front end of copper core adapter sleeve 9 is inserted in copper core connector 4 rear portions of taper again; Also be provided with a screw 3 in the cone inserted link, this screw 3 is connected to the front portion of said copper core adapter sleeve 9 from the front ends in the copper core connector 4 always, and both are coupled together.Thereby between the heart yearn of cable, copper core adapter sleeve 9, copper core connector 4, formed the conduction contact.Also, from the outside three front ends that connect insulating case 12 are wrapped up together through two parts that are oppositely arranged in the positioning sleeve 10 of nylon.Said stress cover 11 and the stress cone 15 caused partial discharge of voltage that can prevent to creep.
In said T type connection-peg 1 set inside several connecting rods 29 are arranged, exceed the part of T type connection-peg 1 rear end on each said connecting rod 29, when butt joint, plug in the said middle part overcoat 13; And said connecting rod 29 rear ends are provided with screw rod 27, after screw rod 27 passes said positioning sleeve 10, the rear end of screw rod 27 are connected with a nut 28.Said middle part overcoat 13 inward flanges also be provided with stainless anterior back-up ring 7 foremost, the rearmost end of said T type connection-peg 1 connecting hole inward flange is embedded with anterior adapter sleeve 5, said anterior back-up ring 7 contacts with said anterior adapter sleeve 5.Both are provided with the O type cushion rubber 6 that waterproof is used between the contact-making surface, for example be through on said anterior adapter sleeve 5, offering groove this O type cushion rubber 6 to be installed.The outside of this contact position is established and also is equipped with a stainless anterior swivel nut 8, and its two ends are set in respectively outside said middle part overcoat 13 and the said T type connection-peg 1, and the anterior adapter sleeve 5 of anterior swivel nut 8 and T type connection-peg 1 is fastenedly connected.
Said connection insulating case 12 and cone inserted link surpass the layout foremost of said middle part overcoat 13 respectively, and all plug in the corresponding main line jack of said T type connection-peg 1 connector foremost; Wherein, each said cone inserted link directly is inserted into and forms the conduction contact in the copper core 2 of a corresponding phase in the main line jack; Each self-corresponding three-phase copper core 2 mutual conduction in said T type connection-peg 1 on two leader cables that docked.All correspondence is provided with insulating barrier outside each phase copper core 2, and between the rear end of the front end of said stress cover 11 and said insulating barrier, also is provided with the packing ring 43 that is set on the cone inserted link.The front end of said connection insulating case 12 is extended with certain distance in said main line jack; And this connection insulating case 12 is plugged between the outer wall and said insulating barrier of T type connection-peg 1, when leader cable being connected to T type connection-peg 1, play guiding and strengthen insulation isolation between the threephase cable.
On the other hand, offer three branch's jacks in the bifurcations of said T type connection-peg 1, make said minute branch road plug 42 three inserted link corresponding inserted therein, draw with three single-phase branch cables of three corresponding connections of inserted link via in minute branch road plug 42 again.
Concrete, in the bifurcations of said T type connection-peg 1, be provided with three separated time copper cores 30, each phase separated time copper core 30 in T type connection-peg 1 with leader cable in corresponding one mutually copper core 2 mutual conduction.In each branch's jack, the rear portion in the separated time copper core 30 is provided with spring coil 32, and the rear end of spring coil 32 contacts with the front end of a separated time cover 35, and the first half of said separated time cover 35 also is arranged in the said separated time copper core 30.The rear end of each said separated time copper core 30 contacts with the front end of the separated time overcoat 38 of an epoxy resin, and the latter half of said separated time cover 35 is arranged on said separated time overcoat 38.At said separated time copper core 30 and separated time overcoat 38 outer setting the insulating barrier that separates three is arranged.The aperture position of each branch's jack on the T type connection-peg 1 also is provided with cover 39 in the separated time of silica gel, and the first half of cover 39 promptly is positioned at branch's jack in the said separated time, and the front end of cover 39 contacts with the rear end of said insulating barrier in the separated time; The latter half of cover 39 is set on the inserted link 40 in the said separated time.
In the said minute branch road plug 42, the heart yearn that each single-phase branch cable front end exposes is inserted into the rear portion of a corresponding phase inserted link 40.Between the branch branch road plug 42 of each phase inserted link 40 and rubber, be provided with separated time insulating case 41; The outside of the position that the latter half outside that said separated time insulating case 41 specifically is positioned at said separated time cover 39 and the heart yearn of cable are connected with inserted link 40.The front portion of each phase inserted link 40 is when inserting corresponding branch jack; Pass cover 39 in the said separated time, insulating barrier, separated time overcoat 38, separated time cover 35, spring coil 32 successively; Said inserted link 40 part foremost is inserted in the said separated time copper core 30, forms conduction with said separated time copper core 30 and contact.
Be embedded with separated time adapter sleeve 33 in the edge of said bifurcations rearmost end, some is exposed to outside the T type connection-peg 1 on the separated time adapter sleeve 33; Said minute branch road plug 42 correspondence position foremost is provided with separated time back-up ring 36, and some is exposed to said separated time back-up ring 36 outside the branch branch road plug 42.Said separated time back-up ring 36 contacts with the expose portion of said separated time adapter sleeve 33, is provided with the O type cushion rubber 34 that waterproof is used between its contact-making surface, for example is on said separated time adapter sleeve 33, to offer groove this O type cushion rubber 34 is installed.The outside of separated time back-up ring 36 and separated time adapter sleeve 33 contact positions; Also be provided with a separated time swivel nut 37; Its two ends are set in the bifurcations outer wall of said minute branch road plug 42 and said T type connection-peg 1 respectively, and said separated time swivel nut 37 is fastenedly connected with separated time adapter sleeve 33.Said separated time swivel nut 37 can be a double-decker, and for example skin is a rubber, and internal layer is a stainless steel material.
In the high pressure three-phase distribution cable branch joint of said structure of the present invention, can be used as the banjo fixing butt jointing of threephase cable on the distribution main line; Owing to adopted the cone inserted link, shortened the length of butt joint, the cone inserted link of both sides only needs the 60mm space just can dock relatively; After threephase cable butt joint, fastening at the inner screw rod etc. of using of joint of the present invention, carry out fastening, safe and reliable at joint outer setting swivel nut.Simultaneously, the present invention can also connect direct insertion branch branch road plug as the three-phase branch joint, and it is little in construction, to turn over the ditch area, and labour intensity alleviates, and has also practiced thrift manpower and materials.
Although content of the present invention has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited appended claim.
Claims (9)
1. a high pressure three-phase distribution cable branch joint is characterized in that,
In the said branch joint, comprise a T type connection-peg (1), the main line plug that two structures are identical, be oppositely arranged, and a branch branch road plug (42); Wherein,
Said two main line plugs are connected the end of a three-phase leader cable separately; Two said main line plugs are inserted into respectively in last two connectors that are oppositely arranged of said T type connection-peg (1), to form the butt joint of these two three-phase leader cables;
In each said main line plug, further be provided with:
Tail cover (22), three-phase leader cable are located in the said tail cover (22), and are divided into three single-phase leader cables;
Afterbody swivel nut (24), its two ends are set in the outside of the waterproof jacket (26) that is provided with on the said three-phase leader cable front portion and the outside of said tail cover (22) rear end respectively, and said afterbody swivel nut (24) is fastenedly connected with said tail cover (22);
The middle part overcoat (13), three said single-phase leader cables pass in said middle part overcoat (13), and with the corresponding connection of three cone inserted links that is arranged on said main line plug inside front end; The front end correspondence of three said cone inserted links is inserted in three main line jacks that are provided with in the connector of said T type connection-peg (1);
Middle part swivel nut (17); Its two ends are set in said tail cover (22) front end and said middle part overcoat (13) rear end outside, contacted position respectively, and said middle part swivel nut (17) is fastenedly connected with the middle part adapter sleeve (14) that said middle part overcoat (13) rear end is embedded;
Anterior swivel nut (8); Its two ends are set in said middle part overcoat (13) front end and outside, the contacted position of said T type connection-peg (1) connector respectively, and said anterior swivel nut (8) is fastenedly connected with the anterior adapter sleeve (5) that T type connection-peg (1) connector rear end is embedded;
Also offer a bifurcations on the said T type connection-peg (1), branch road plug (42) correspondence was inserted in the said bifurcations in said minute; Do not connect said minute branch road plug when (42), said bifurcations insulation sealing; Be provided with branch's jack of three-phase in the said bifurcations, three-phase inserted link (40) correspondence that the front end of said minute branch road plug (42) inside is provided with is plugged in the said branch jack of three-phase; Three said single-phase branch cables penetrate in the branch branch road plug (42), and the corresponding rear end that is connected to the inserted link (40) of three-phase;
Also be provided with separated time swivel nut (37) on said minute branch road plug (42); Its two ends are set in the outside of the bifurcations rear end of said minute branch road plug (42) front end and said T type connection-peg (1) respectively, and said separated time swivel nut (37) is fastenedly connected with the separated time adapter sleeve (33) that said T type connection-peg (1) bifurcations rear end is embedded.
2. high pressure three-phase distribution cable branch joint as claimed in claim 1 is characterized in that,
One group of last drop wire clip that is oppositely arranged (25A, 25B) is arranged in the back of said tail cover (22); After the three-phase leader cable passes between the drop wire clip (25A, 25B) breach that forms, this group is gone up drop wire clip (25A, 25B) outside fastening at the three-phase leader cable through some screws (25);
By three single-phase leader cables that the three-phase leader cable is told, also the front portion in said tail cover (22) is passed separated time awl (21), separated time latch (19), upward three perforates of each self-forming of distributor plate (18) successively;
Three said single-phase leader cables wear after the front portion of said separated time awl (21) last three perforates separately, three lock sleeves (20) correspondence are arranged on the outside of three single-phase leader cables; Again said separated time latch (19) is arranged on the outside rear end of three said lock sleeves (20) and fastening, said distributor plate (18) is arranged on the outside front end of three said lock sleeves (20) and fastening.
3. high pressure three-phase distribution cable branch joint as claimed in claim 2 is characterized in that,
Be provided with three in the said middle part overcoat (13) and connect insulating case (12); Each rear end that connects in the insulating case (12) is provided with stress cone (15); Each front portion that connects in the insulating case (12) is provided with stress cover (11); Make that each single-phase leader cable passes from tail cover (22) after; Pass stress cone (15), correspondence is inserted in the stress cover (11) of said connection insulating case (12) and front portion thereof again; Also be provided with positioning sleeve (10) in the said middle part overcoat (13), from the outside three front portions that connect insulating case (12) wrapped up together.
4. high pressure three-phase distribution cable branch joint as claimed in claim 3 is characterized in that,
Each single-phase leader cable front end is for exposing the heart yearn that is provided with, and said heart yearn is connected with a corresponding cone inserted link in said stress cover 11; Each said cone inserted link further includes:
Copper core adapter sleeve (9), said heart yearn are inserted in the rear end of said copper core adapter sleeve (9);
The copper core connector (4) of taper, the front end of said copper core adapter sleeve (9) are inserted in the rear portion of copper core connector (4) of taper;
Screw (3), said screw (3) front end in the copper core connector (4) is connected to the front portion of said copper core adapter sleeve (9) always, and both are coupled together;
Between the heart yearn of said single-phase leader cable, copper core adapter sleeve (9), copper core connector (4), form the conduction contact.
5. high pressure three-phase distribution cable branch joint as claimed in claim 4 is characterized in that,
In said T type connection-peg (1) set inside several connecting rods (29) are arranged, exceed the part of T type connection-peg (1) rear end on each said connecting rod (29), when butt joint, plug in the said middle part overcoat (13); And the rear end of each said connecting rod (29) is provided with screw rod (27), and screw rod (27) makes the rear end of screw rod (27) be connected with a nut (28) after passing the positioning sleeve (10) in the said middle part overcoat (13).
6. high pressure three-phase distribution cable branch joint as claimed in claim 5 is characterized in that,
Each said connection insulating case (12) and said cone inserted link surpass said middle part overcoat (13) foremost respectively foremost, and all are inserted in the main line jack corresponding on said T type connection-peg (1) connector;
Wherein, each said cone inserted link directly is inserted into the middle formation conduction of copper core (2) contact of a corresponding phase in the main line jack; With each self-corresponding three-phase copper core (2) of two three-phase leader cables that docked mutual conduction in said T type connection-peg (1);
Also correspondence is provided with insulating barrier outside each phase copper core (2), between the front end of the insulating barrier rear end of each phase copper core (2) and said stress cover (11), also is provided with the packing ring (43) that is set on the cone inserted link; The front end of said connection insulating case (12) is extended with certain distance in said main line jack, and the front end of said connection insulating case (12) is plugged between the outer wall and said insulating barrier of T type connection-peg (1).
7. high pressure three-phase distribution cable branch joint as claimed in claim 6 is characterized in that,
In three branch's jacks of the bifurcations of said T type connection-peg (1); Correspondence is provided with three separated time copper cores (30), each phase separated time copper core (30) in T type connection-peg (1) with the three-phase leader cable that is docked in corresponding one mutually copper core (2) mutual conduction;
In each branch's jack; Rear portion in the separated time copper core (30) is provided with spring coil (32); The rear end of spring coil (32) contacts with the front end of a separated time cover (35), and the first half of said separated time cover (35) also is arranged in the said separated time copper core (30);
The rear end of each said separated time copper core (30) contacts with the front end of a separated time overcoat (38), and the latter half of said separated time cover (35) is arranged in the said separated time overcoat (38); At said separated time copper core (30) and separated time overcoat (38) outer setting the insulating barrier that separates three is arranged;
Said T type connection-peg (1) is gone up the aperture position of each branch's jack, also is provided with cover (39) in the separated time, and the first half of cover (39) is positioned at branch's jack in the said separated time, and the front end of cover (39) contacts with the rear end of said insulating barrier in the separated time; The latter half of cover (39) is set on the corresponding inserted link (40) of said T type connection-peg (1) in the said separated time.
8. high pressure three-phase distribution cable branch joint as claimed in claim 7 is characterized in that,
In said minute branch road plug (42), the heart yearn that each single-phase branch cable front end exposes is inserted into the rear portion of a corresponding phase inserted link (40); Between each phase inserted link (40) and branch branch road plug (42), be provided with separated time insulating case (41); Said separated time insulating case (41) is positioned at latter half outside and the heart yearn of cable and the outside of inserted link (40) link position of said separated time cover (39);
The front portion of each phase inserted link (40) is when inserting corresponding branch jack; Pass cover (39), insulating barrier, separated time overcoat (38), separated time cover (35), spring coil (32) in the said separated time successively; Said inserted link (40) part foremost is inserted in the said separated time copper core (30), and the heart yearn in the inserted link (40) is contacted with said separated time copper core (30) formation conduction.
9. high pressure three-phase distribution cable branch joint as claimed in claim 8 is characterized in that,
Be provided with first O type cushion rubber (23) between said tail cover (22) rear end and the contacted surface of afterbody swivel nut (24);
Be provided with second O type cushion rubber (16) between adapter sleeve (14) rear end, said middle part and the contacted surface of said tail cover (22) front end;
Said middle part overcoat (13) also be provided with anterior back-up ring (7) foremost, be provided with the 3rd O type cushion rubber (6) between the contacted surface of anterior adapter sleeve (5) of itself and said T type connection-peg (1) connecting hole rearmost end;
Said minute the branch road plug (42) be provided with separated time back-up ring (36) foremost, be provided with the 4th O type cushion rubber (34) between the contacted surface of separated time adapter sleeve (33) of itself and said bifurcations rearmost end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210012246.1A CN102570375B (en) | 2011-12-31 | 2012-01-16 | High-voltage three-phase distribution cable branch joint |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110456602.4 | 2011-12-31 | ||
| CN201110456602 | 2011-12-31 | ||
| CN201210012246.1A CN102570375B (en) | 2011-12-31 | 2012-01-16 | High-voltage three-phase distribution cable branch joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102570375A true CN102570375A (en) | 2012-07-11 |
| CN102570375B CN102570375B (en) | 2014-12-10 |
Family
ID=46415118
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210012246.1A Expired - Fee Related CN102570375B (en) | 2011-12-31 | 2012-01-16 | High-voltage three-phase distribution cable branch joint |
| CN2012200177614U Expired - Fee Related CN202424099U (en) | 2011-12-31 | 2012-01-16 | Branch joint of underground distribution cable |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200177614U Expired - Fee Related CN202424099U (en) | 2011-12-31 | 2012-01-16 | Branch joint of underground distribution cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN102570375B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140730A (en) * | 2015-08-24 | 2015-12-09 | 河北华通线缆集团有限公司 | Low-smoke halogen-free and fire-resistant ready-made branch cable connecting method and connector |
| CN110752575A (en) * | 2019-09-05 | 2020-02-04 | 国网江苏省电力有限公司电力科学研究院 | Three-phase coaxial superconducting cable stress cone |
| EP2937037B1 (en) * | 2014-04-25 | 2023-12-13 | Kpr U.S., Llc | Physical shielding for ecg electrical connections |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2828473A (en) * | 1956-01-20 | 1958-03-25 | Angus T High | Emergency electrical junction box |
| CN1169271C (en) * | 1997-08-28 | 2004-09-29 | 徐晓鹰 | Three-phase electrical cable plug-type connector |
| CN2687913Y (en) * | 2004-02-20 | 2005-03-23 | 长沙电缆附件有限公司 | T-shape branch joint for power cable branching |
| CN2692900Y (en) * | 2004-03-16 | 2005-04-13 | 段毅文 | High-voltage cable crosslink assembled branch connector |
-
2012
- 2012-01-16 CN CN201210012246.1A patent/CN102570375B/en not_active Expired - Fee Related
- 2012-01-16 CN CN2012200177614U patent/CN202424099U/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2828473A (en) * | 1956-01-20 | 1958-03-25 | Angus T High | Emergency electrical junction box |
| CN1169271C (en) * | 1997-08-28 | 2004-09-29 | 徐晓鹰 | Three-phase electrical cable plug-type connector |
| CN2687913Y (en) * | 2004-02-20 | 2005-03-23 | 长沙电缆附件有限公司 | T-shape branch joint for power cable branching |
| CN2692900Y (en) * | 2004-03-16 | 2005-04-13 | 段毅文 | High-voltage cable crosslink assembled branch connector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2937037B1 (en) * | 2014-04-25 | 2023-12-13 | Kpr U.S., Llc | Physical shielding for ecg electrical connections |
| CN105140730A (en) * | 2015-08-24 | 2015-12-09 | 河北华通线缆集团有限公司 | Low-smoke halogen-free and fire-resistant ready-made branch cable connecting method and connector |
| CN110752575A (en) * | 2019-09-05 | 2020-02-04 | 国网江苏省电力有限公司电力科学研究院 | Three-phase coaxial superconducting cable stress cone |
Also Published As
| Publication number | Publication date |
|---|---|
| CN202424099U (en) | 2012-09-05 |
| CN102570375B (en) | 2014-12-10 |
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