CN105298201B - Transmission line cable termination solid draws lower device - Google Patents

Transmission line cable termination solid draws lower device Download PDF

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Publication number
CN105298201B
CN105298201B CN201510746266.5A CN201510746266A CN105298201B CN 105298201 B CN105298201 B CN 105298201B CN 201510746266 A CN201510746266 A CN 201510746266A CN 105298201 B CN105298201 B CN 105298201B
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CN
China
Prior art keywords
arm
cable
cable termination
layers
shaft
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CN201510746266.5A
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Chinese (zh)
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CN105298201A (en
Inventor
沈嵘
张元兴
戴岳
万明玉
郭锐
乔杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Power Supply Co Ltd Of Jiangsu Electric Power Co
State Grid Corp of China SGCC
Original Assignee
Suzhou Power Supply Co Ltd Of Jiangsu Electric Power Co
State Grid Corp of China SGCC
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Priority to CN201510746266.5A priority Critical patent/CN105298201B/en
Publication of CN105298201A publication Critical patent/CN105298201A/en
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Abstract

The present invention relates to a kind of transmission line cable termination solids to draw lower device, including steel pipe pole and the cable termination platform for being arranged at steel pipe pole side;Three layers of cross-arm that steel pipe pole includes shaft, inner end is connected with shaft and projection of the axis on the section of shaft is misaligned, three layers of cross-arm are respectively upper cross-arm, middle cross-arm and lower cross-arm;Cable termination platform include cable termination platform mobile jib, be installed on cable termination platform mobile jib and with the outer end of three layers of cross-arm mutually vertical corresponding cable termination head arrestor mounting platform, the one end of a power cable is each being correspondingly connected with cable termination head arrestor mounting platform intersection respectively for three power lines of vertically downward direction through three layers of cross-arm switching, the other end of power cable enters ground.The present invention can make to keep enough safe distances between the downlead of overhead transmission line, and its appearance more coordinates beauty, and wiring construction is clear convenient, will not excessive land occupation, investment reduction.

Description

Transmission line cable termination solid draws lower device
Technical field
The present invention relates to project of transmitting and converting electricity technical fields, and in particular to it is a kind of in work transmission line will be overhead Power line is forwarded to the device of the power cable into ground.
Background technology
At present, 110kV Double-loop overheads are widely distributed, and often need to be mutually powered-down by overhead line access in urban sector It is changed to put cable underground after cable terminal installation.The modified segment structure on the overhead line electric force pole tower of existing form is used under normal conditions Part to install the relevant apparatus such as corresponding wire jumper rod insulator, arrester and cable termination, is drawn bare conductor with downlead It is connected to tag.Since various electric devices are installed on shaft tower, while need to make various companies between bare conductor It connects, not enough coordinates beauty in appearance, while inconvenience is caused to operations such as hotline maintenance, maintenances after putting into operation.And indivedual works Cheng Zhong, relevant unit is based on hotline maintenance, upkeep operation convenience considers, two base shafts are established respectively using in the overhead line end Double-loop overhead is respectively separated primary Ioops and guides to the scheme drawn again on individual shaft tower and be connected to cable termination by tower, is so made again Increase into corresponding investment and floor space, form certain waste.
The content of the invention
The object of the present invention is to provide a kind of investment reduction and floor space and convenient for the defeated of the operations such as hotline maintenance, maintenance Electric line cable termination solid draws lower device.
In order to achieve the above objectives, the technical solution adopted by the present invention is:
A kind of transmission line cable termination solid draws lower device, for overhead power line to be forwarded to the electric power electricity into ground Cable, the transmission line cable termination solid, which draws lower device, includes steel pipe pole and the cable termination for being arranged at the steel pipe pole side Platform;
The steel pipe pole includes the shaft being vertically arranged, inner end is connected with the shaft and axis cuing open in the shaft Three layers of misaligned cross-arm, the respectively upper cross-arm of three layers of cross-arm, middle cross-arm and lower cross-arm, three layers of horizontal stroke are projected on face The outer end of load connects a power line and the power line is switched to vertically downward direction by horizontal direction respectively;
The cable termination platform include cable termination platform mobile jib, be installed on the cable termination platform mobile jib and with The vertical corresponding cable terminal-arrester mounting platform of outer end phase of three layers of cross-arm, transferring through three layers of cross-arm is Three power lines of vertically downward direction are respectively in respective company corresponding with the cable terminal-arrester mounting platform intersection The one end of a power cable is connect, the other end of the power cable enters ground.
The cross bar is a horizontally disposed straight rod member, and the outer end of three layers of cross-arm is located at one corresponding to the cross bar In rectangular area.
Angle between projection of the axis of axis and the wherein the middle cross load of the upper cross-arm on the section of the shaft Angle between the projection of the axis of wherein the middle cross load and the axis of the lower cross-arm on the section of the shaft is equal.
Angle between projection of the axis on the section of the shaft of axis and the wherein the middle cross load of the upper cross-arm, Angle between the projection of the axis of wherein the middle cross load and the axis of the lower cross-arm on the section of the shaft is 30 °.
The angle of the axis and the axis of horizontal direction power line of wherein the middle cross load is right angle.
Three layers of cross-arm described in two groups is axisymmetrically mutually provided on the shaft, three layers of cross-arm are correspondingly connected with one described in every group Three phase lines in a electric power line loop;There are two the cable termination platforms for the shaft both sides setting.
The outer end of the cross-arm is provided with the strain insulator string of horizontal direction and the wire jumper insulator chain of vertical direction, institute It states power line and is sequentially connected the end of the strain insulator string and the end of the wire jumper insulator chain so as to by horizontal direction Switch to vertically downward direction.
Each pass through Transition wire clip and electrical outdoor through three layers of cross-arm switching for three power lines of vertically downward direction Cable terminals and be correspondingly connected with the power cable;The outdoor cable terminals are arranged at the cable terminal-arrester On mounting platform;Each Transition wire clip is correspondingly connected with by conducting wire there are one arrester, and the arrester is arranged at described On cable terminal-arrester mounting platform.
The every power cable is respectively connected with earth cable, and each earth cable, which is connected to, is arranged on the cable Earthing box for electric cable on terminal platform mobile jib.
The power line of vertically downward direction is fixed through rod insulator, and the rod insulator passes through rod insulator Cross-arm and be connected with the shaft.
Since above-mentioned technical proposal is used, the present invention has following advantages compared with prior art:The power transmission line of the present invention Road cable termination solid draws lower device for overhead power line to be drawn to the power cable being connected into ground, can make overhead transmission line Downlead between keep enough safe distances, and its appearance more coordinates beauty, and wiring construction is clear convenient, will not be excessive Mounting area is occupied, compared with investment reduction.
Description of the drawings
Attached drawing 1 is three-dimensional wiring schematic diagram of the invention.
Attached drawing 2 is the front view of the partial component of the present invention.
Attached drawing 3 is the A-A sectional views of the partial component of the present invention.
Attached drawing 4 is the right view of the partial component of the present invention.
In the figures above:1st, steel pipe pole;2nd, cable termination platform;3rd, longitudinal bracing;4th, upper cross-arm;5th, middle cross-arm;6th, under Cross-arm;7th, strain insulator string;8th, wire jumper insulator chain;9th, rod insulator cross-arm;10th, rod insulator;11st, cable termination Platform mobile jib;12nd, cable terminal-arrester mounting platform;13rd, Transition wire clip;14th, outdoor cable terminals;15th, electric power electricity Cable;16th, arrester;17th, conducting wire;18th, earth cable;19th, earthing box for electric cable;20th, power line.
Specific embodiment
The invention will be further described for shown embodiment below in conjunction with the accompanying drawings.
Embodiment one:It is a kind of as shown in attached drawing 1 to attached drawing 4 to be used to the two circuit overhead power lines of 110kV being forwarded to The transmission line cable termination solid for entering the power cable on ground draws lower device, including steel pipe pole 1 and is arranged at 1 side of steel pipe pole Cable termination platform 2.
Steel pipe pole 1 includes shaft 3 and three layers of cross-arm.Shaft 3 compared with steel pipe pole 1 mounting surface(Such as ground)It sets vertically It puts, lower end caliber is used to be more than the steel pipe of upper end caliber.The bottom of shaft 3 has a connecting plate radially, on connecting plate Bolt hole is provided with, so as to be fastened by bolt and mounting surface, and is provided on connecting plate and is distributed around the shaft 3 And the stiffener axially set along it.Three layers of cross-arm distribution and the top half of shaft 3, axis of one group of three layers of cross-arm along shaft 3 To being from top to bottom followed successively by upper cross-arm 4, middle cross-arm 5 and lower cross-arm 6.Spacing phase in the longitudinal direction between adjacent two layers cross-arm Deng.Using rod piece, inner end is connected each cross-arm with shaft 3 by connection component.Connection component includes being arranged on shaft 3 First portion and be arranged on the second portion of cross-arm inner end, be connected between first portion and second portion by multiple bolts It connects.First portion includes vertically set along several axially extending circumferential plates, the vertical circumferential plate of shaft 3 one To the first parallel web.Second portion includes the end plate vertically set, is vertically arranged at the end plate One side on and can be respectively with the second web of a pair that mutually recline of the first web of a pair, cross-arm is arranged on the another side of end plate On.Bolt hole is accordingly offered between the first web and the second web that mutually recline, so that first portion and second Divide and be connected by the bolt to match with the bolt hole to realize.Throwing of the axis of one group of three layers of cross-arm on the section of shaft 3 Shadow is misaligned, the angle between the projection of the axis of upper cross-arm 4 and the axis of middle cross-arm 5 on the section of shaft 3 and middle cross-arm 5 Axis and lower cross-arm 6 projection of the axis on the section of shaft 3 between angle it is equal.In general, the axis of upper cross-arm 4 and The axis of angle, middle cross-arm 5 between projection of the axis of middle cross-arm 5 on the section of shaft 3 and the axis of lower cross-arm 6 are in bar The angle between projection on the section of body 3 takes 30 ° so that one group of three layers of cross-arm substantially helically rises along shaft 3 Form arrangement.Due to the present embodiment be for the device in 110kV double loops, on shaft 3 mutually axisymmetrically set There are two groups of three layers of cross-arms, every group of three layers of cross-arm are correspondingly connected with three phase lines in 20 circuit of power line.One group of three layers of horizontal stroke The length of load simultaneously differs, but upper cross-arm 4 is identical with the length of lower cross-arm 6 and length that be longer than middle cross-arm 5 so that three layers of horizontal stroke The outer end of load is in a long and narrow rectangular area.The length of cross-arm 5 selects 3.2m or so in usually, can so cause three The horizontal distance of the outer end of two layers adjacent of cross-arm keeps 1.6m or so in layer cross-arm.The outer end of three layers of cross-arm connects one respectively Power line 20, and horizontal power line 20 is switched into vertically downward direction by horizontal direction.The outer end of cross-arm is provided with horizontal direction Strain insulator string 7 and vertical direction wire jumper insulator chain 8, power line 20 is sequentially connected the end of strain insulator string 7 End with wire jumper insulator chain 8 by horizontal direction so that switch to vertically downward direction.In general, make the axis and water of middle cross-arm 5 Square each power line 20 is connected for right angle to the angle of the axis of power line 20, so, axis, the middle cross-arm 5 of upper cross-arm 4 Axis and lower cross-arm 6 axis respectively with the axis direction of the power line of overhead horizontal direction 20 in 60 °, 90 °, 120 ° folder Angle.At the middle part of shaft 3, set there are one rod insulator cross-arm 9, installation adds and sets multiple rod insulators 10 so that Power line 20 through cross-arm switching straight down is fixed by corresponding rod insulator 10.
Cable termination platform 2 is arranged at the side of steel pipe pole 1, since the present embodiment is for the dress in 110kV double loops It puts, steel pipe pole 1 is provided with two groups of three layers of cross-arms, therefore needs to set two cable termination platforms 2, they are symmetrically disposed on steel The both sides of the shaft 3 of tube rod 1, and it is corresponding with two groups of three layers of cross-arms respectively.The height of cable termination platform 2 is less than steel pipe pole 1 Height.
Cable termination platform 2 includes the cable termination platform mobile jib 11 being vertically arranged on mounting surface, mounted on cable end Hold cable terminal-arrester mounting platform 12 on platform mobile jib 11, cable terminal-arrester mounting platform 12 and three layers The outer end of cross-arm is mutually vertical corresponding.Cable terminal-arrester mounting platform 12 includes at least a horizontally disposed straight rod member, and The outer end of three layers of cross-arm is located in the rectangular area corresponding to cross bar, is three of vertically downward direction through three layers of cross-arm switching Power line 20 respectively by rod insulator 10 fixation after, then respectively each with cable terminal-arrester mounting platform 12 intersection correspondences connect the one end of a power cable 15, electric power electricity through Transition wire clip 13 and outdoor cable terminals 14 The other end of cable 15 enter ground, power cable 15 can be fixed on cable termination platform mobile jib 11 or with cable termination platform master On the fixed frame that bar 11 is connected.Outdoor cable terminals 14 are mounted on cable terminal-arrester mounting platform 12, cable Terminals-arrester mounting platform 12 can also include another attached rod piece, have and outdoor cable terminal on the attached rod piece Several arresters 16 of first 14 corresponding setting, the Transition wire clip 13 with the 14 corresponding connection of outdoor cable terminals is by leading Line 17 is correspondingly connected with an arrester 16.Every power cable 15 is respectively connected with earth cable 18, and each earth cable 18 is all connected with To the earthing box for electric cable 19 being arranged on cable termination platform mobile jib 11.
The present invention combines previous engineering practice, and one type 110kV Double-loop overheads of new design, which draw, is connected to cable termination steel 1 device of tube rod makes to keep enough safe distances between the downlead of two circuit overhead transmission lines, and parallel vertical is connected to downwards electricity In addition cable terminals 14 set independent cable termination platform mobile jib 11, for placing cable termination respectively in 1 both sides of steel pipe pole 16 grade devices of connector and arrester.After Curve guide impeller, shape more coordinates beauty, and wiring construction is clear, convenient, and when one When returning line maintenance, safeguarding, other loop line road normal operation is not influenced.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention The equivalent change or modification that Spirit Essence is made, should be covered by the protection scope of the present invention.

Claims (10)

1. a kind of transmission line cable termination solid draws lower device, for overhead power line to be forwarded to the electric power electricity into ground Cable, it is characterised in that:The transmission line cable termination solid draws lower device and includes steel pipe pole and be arranged at the steel pipe bar side The cable termination platform in portion;
The steel pipe pole includes the shaft being vertically arranged, inner end is connected with the shaft and axis is on the section of the shaft The misaligned three layers of cross-arm of projection, three layers of cross-arm are respectively upper cross-arm, middle cross-arm and lower cross-arm, three layers of cross-arm Outer end connects a power line and the power line is switched to vertically downward direction by horizontal direction respectively;
The cable termination platform includes the cable termination platform mobile jib being vertically arranged on the mounting surface of the steel pipe pole, installation Pacify on the cable termination platform mobile jib and with vertical corresponding cable terminal-arrester of outer end phase of three layers of cross-arm Assembling platform, through three layers of cross-arms switching for vertically downward direction three power lines respectively respective with the cable termination Head-arrester mounting platform intersection is correspondingly connected with the one end of a power cable, and the other end of the power cable enters Ground.
2. transmission line cable termination solid according to claim 1 draws lower device, it is characterised in that:The cable termination Head-arrester mounting platform includes at least a horizontally disposed straight rod member, and the outer end of three layers of cross-arm is located at the straight rod member In a corresponding rectangular area.
3. transmission line cable termination solid according to claim 1 or 2 draws lower device, it is characterised in that:The upper horizontal stroke Angle and the axis of wherein the middle cross load between projection of the axis of axis and the wherein the middle cross load of load on the section of the shaft Angle between projection of the axis of line and the lower cross-arm on the section of the shaft is equal.
4. transmission line cable termination solid according to claim 3 draws lower device, it is characterised in that:The upper cross-arm The axis of angle, wherein the middle cross load between the projection of axis and the axis of wherein the middle cross load on the section of the shaft and institute The angle stated between projection of the axis of lower cross-arm on the section of the shaft is 30 °.
5. transmission line cable termination solid according to claim 1 draws lower device, it is characterised in that:Wherein the middle cross load The angle of axis and the axis of horizontal direction power line is right angle.
6. transmission line cable termination solid according to claim 1 draws lower device, it is characterised in that:Phase on the shaft Three layers of cross-arm described in two groups is axisymmetrically provided with, three layers of cross-arm are correspondingly connected with three in an electric power line loop described in every group Phase line;There are two the cable termination platforms for the shaft both sides setting.
7. transmission line cable termination solid according to claim 1 draws lower device, it is characterised in that:Outside the cross-arm End is provided with the strain insulator string of horizontal direction and the wire jumper insulator chain of vertical direction, and the power line is sequentially connected described The end of strain insulator string and the end of the wire jumper insulator chain by horizontal direction so that switch to vertically downward direction.
8. transmission line cable termination solid according to claim 1 draws lower device, it is characterised in that:Through three layers of horizontal stroke Load switching is each correspondingly connected with institute for three power lines of vertically downward direction by Transition wire clip and outdoor cable terminals State power cable;The outdoor cable terminals are arranged on the cable terminal-arrester mounting platform;Each mistake Branch-cut bridge folder is correspondingly connected with by conducting wire there are one arrester, and the arrester is arranged at the cable terminal-arrester installation On platform.
9. transmission line cable termination solid according to claim 1 draws lower device, it is characterised in that:The every electric power Cable is respectively connected with earth cable, and each earth cable is connected to the cable being arranged on the cable termination platform mobile jib Grounding box.
10. transmission line cable termination solid according to claim 1 draws lower device, it is characterised in that:Side straight down To the power line fixed through rod insulator, the rod insulator by rod insulator cross-arm and with the shaft phase Connection.
CN201510746266.5A 2015-11-06 2015-11-06 Transmission line cable termination solid draws lower device Active CN105298201B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510746266.5A CN105298201B (en) 2015-11-06 2015-11-06 Transmission line cable termination solid draws lower device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510746266.5A CN105298201B (en) 2015-11-06 2015-11-06 Transmission line cable termination solid draws lower device

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Publication Number Publication Date
CN105298201A CN105298201A (en) 2016-02-03
CN105298201B true CN105298201B (en) 2018-05-22

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Application Number Title Priority Date Filing Date
CN201510746266.5A Active CN105298201B (en) 2015-11-06 2015-11-06 Transmission line cable termination solid draws lower device

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105680390B (en) * 2016-03-09 2018-09-14 国家电网公司 A kind of cable terminal pole and its electrical support device
CN105680400B (en) * 2016-03-09 2018-03-20 国家电网公司 A kind of single loop distribution overhead line junction pole and its wiring construction
CN105680401B (en) * 2016-03-22 2018-07-24 中国能源建设集团广东省电力设计研究院有限公司 Substation's outlet hardened system
CN107294034B (en) * 2017-05-25 2018-11-02 国网山东省电力公司青岛供电公司 cable terminal pole
CN107069644A (en) * 2017-06-12 2017-08-18 国网江苏省电力公司无锡供电公司 A kind of multiple splicing apparatus in outdoor cable terminal station

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU132467U1 (en) * 2013-05-17 2013-09-20 ООО "АГИС Инжиниринг" Anchor angular transition support of the electric transmission air line to the cable line
CN203654846U (en) * 2013-10-21 2014-06-18 杭州市电力设计院有限公司 Steel pipe pole used for cable terminal of electric transmission line
CN203961412U (en) * 2014-07-24 2014-11-26 成都城电电力工程设计有限公司 The double loop steel pipe pole of aerial terminal
CN204349398U (en) * 2014-12-10 2015-05-20 国家电网公司 Cable termination tower
CN205116866U (en) * 2015-11-06 2016-03-30 江苏省电力公司苏州供电公司 Device is down drawn to transmission line cable termination solid

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