CN110534986A - A kind of connection gold utensil component and soft connection component - Google Patents

A kind of connection gold utensil component and soft connection component Download PDF

Info

Publication number
CN110534986A
CN110534986A CN201910650516.3A CN201910650516A CN110534986A CN 110534986 A CN110534986 A CN 110534986A CN 201910650516 A CN201910650516 A CN 201910650516A CN 110534986 A CN110534986 A CN 110534986A
Authority
CN
China
Prior art keywords
stranded conductor
aluminum stranded
folder
adapter
connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910650516.3A
Other languages
Chinese (zh)
Inventor
赵重阳
王文豪
付江浩
张跃
张力方
王晶
王旭辉
张盼
陈铁钢
白海冰
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.)
State Grid Corp of China SGCC
Pinggao Group Co Ltd
Original Assignee
State Grid Corp of China SGCC
Pinggao Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Pinggao Group Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201910650516.3A priority Critical patent/CN110534986A/en
Publication of CN110534986A publication Critical patent/CN110534986A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02Contact members
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00Coupling parts supported only by co-operation with counterpart
    • H01R31/06Intermediate parts for linking two coupling parts, e.g. adapter

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

The present invention relates to a kind of connection gold utensil component and soft connection component, connection gold utensil component includes embracing folder and terminal plate, embraces folder for holding tightly in tubular bus, terminal plate with the connecting terminal of mutual inductor for being fixedly connected;The connection gold utensil component further includes that the soft connection component embraced between folder and terminal plate is arranged in, and the soft connection component includes aluminum stranded conductor and the adapter for being fixed on aluminum stranded conductor both ends, and the aluminum stranded conductor is arranged with respect to the domed evagination of the line of two adapters;The adapter has fitting coupling part and wire interconnecting piece point, and the fitting coupling part is used to connect with corresponding armful of folder or terminal plate, and the wire interconnecting piece point is connect with aluminum stranded conductor;The fitting coupling part and the L-shaped arrangement of wire interconnecting piece point;The wire interconnecting piece point is equipped with jack, and the aluminum stranded conductor is inserted into jack, and meets the connection requirement of distance shorter mutual inductor and tubular bus by being welded and fixed with adapter.

Description

A kind of connection gold utensil component and soft connection component
Technical field
The present invention relates to a kind of connection gold utensil component and soft connection components.
Background technique
In the extra-high voltage direct-current transmission engineering to have put into operation, mutual inductor is generally suspended on tubular bus, such as application publication number For CN104505720A, data of publication of application is a kind of 1000KV highly resistance disclosed in the Chinese invention patent application of 2015.04.08 Circuit column pipe parent structure, wherein voltage transformer is electrically connected by lower wire with pipe mother, and voltage transformer is suspended to pipe On shape bus.
Using above-mentioned connection type, there is interaction force between mutual inductor and tubular bus, mutual inductor is be easy to cause to damage It is bad.Therefore, there is the mutual inductor of more supporting form in newly-built direct-current ultra high voltage power transmission engineering, as shown in Figure 1, mutual inductor 105 are fixed on bracket 106, are later electrically connected mutual inductor 105 with tubular bus 101 by connection gold utensil, at this point, tubular mother It is mainly electrical connection, interaction force very little between line 101 and mutual inductor 105.
The connection gold utensil for connecting mutual inductor 105 and tubular bus 101 in the prior art is split type fitting, specifically, even Connecing fitting includes that embracing for split settings presss from both sides 102, terminal plate 104 and aluminum stranded conductor 103.Carry out mutual inductor 105 and tubular bus 101 When electrical connection, embraces folder 102 and hold tightly on tubular bus 101, terminal plate 104 is connect with the connecting terminal of mutual inductor 105, by more Terminal plate 104 is conductively connected by root aluminum stranded conductor 103 with folder 102 is embraced.According to requiring, mutual inductor and tubular bus pass through connection gold utensil After connection, the ability of relative displacement should ensure that.Therefore aluminum stranded conductor should be bent into diagram shape, to guarantee that it is certain that aluminum stranded conductor has Stroke meets the relative displacement requirement between mutual inductor and tubular bus indirectly.
But when the distance between mutual inductor and tubular bus are shorter, the difficulty of aluminum stranded conductor bending is carried out at the construction field (site) Spend larger, and aluminum stranded conductor is easy broken lot after bending, and the anticorona performance of aluminum stranded conductor itself after broken lot substantially reduces.
Summary of the invention
The purpose of the present invention is to provide a kind of connection gold utensil components, are used to connect to solve connection gold utensil in the prior art Connection difficult problem when distance shorter mutual inductor and tubular bus;The object of the invention is also to provide a kind of solution is above-mentioned The soft connection component of problem.
Connection gold utensil component of the invention adopts the following technical scheme that
Connection gold utensil component includes embracing folder and terminal plate, embraces folder for holding tightly in tubular bus, terminal plate is used for and mutual inductor Connecting terminal be fixedly connected;
The connection gold utensil component further includes that the soft connection component embraced between folder and terminal plate, the soft connection component packet is arranged in Include aluminum stranded conductor and the adapter for being fixed on aluminum stranded conductor both ends, the aluminum stranded conductor outer projection domed with respect to the line of two adapters It sets;
The adapter has fitting coupling part and a wire interconnecting piece point, the fitting coupling part be used for it is corresponding embrace folder or Terminal plate connection, the wire interconnecting piece point are connect with aluminum stranded conductor;
The fitting coupling part and the L-shaped arrangement of wire interconnecting piece point, the wire interconnecting piece point edge armful folder and terminal plate Septal direction extends;The wire interconnecting piece point is equipped with jack, and the aluminum stranded conductor is inserted into jack, and is passed through with adapter It is welded and fixed.
The beneficial effect of connection gold utensil component of the invention is: aluminum stranded conductor of soft connection component itself is with respect to two adapters The domed evagination setting of line, when carrying out soft connection component and embracing the attended operation of folder, terminal plate, adapter and aluminum stranded conductor are It is welded to be fixed together, adapter need to be only fixedly connected with corresponding armful of folder or terminal plate;Due to fitting interconnecting piece Divide and divide L-shaped arrangement with wire interconnecting piece, not needing at the scene can be by adapter and corresponding armful to aluminum stranded conductor progress bending Folder or terminal plate are fixed, and even for mutual inductor and the shorter situation of tubular bus distance, can also easily pass through the group that is flexible coupling Part will embrace folder and be electrically connected with terminal plate, meet the connection requirement of distance shorter mutual inductor and tubular bus.In addition, aluminum stranded conductor is in The setting of arch evagination, fitting coupling part and the L-shaped arrangement of wire interconnecting piece point, aluminum stranded conductor is integrally bent into arch can be real The connection of existing aluminum stranded conductor and adapter embraces folder compared with the aluminum stranded conductor between terminal plate with being connected in the prior art, aluminum stranded conductor Bending number and bending angle reduce, can preferably avoid aluminum stranded conductor broken lot.
The jack is groove backwards to the part of inserted terminal as a preferred technical solution,.
The utility model has the advantages that further increasing the stability maintenance of aluminum stranded conductor and joint.
The fitting coupling part is bolted to connection with armful folder or terminal plate as a preferred technical solution,.
The utility model has the advantages that adapter and armful folder or terminal plate are convenient for disassembly and assembly.
The adapter is L-shaped laminated structure as a preferred technical solution,.
The utility model has the advantages that adapter structure is simple, design is easy to process, and light weight.
Soft connection component of the invention adopts the following technical scheme that
Soft connection component includes for the soft connection component embraced between folder and terminal plate to be arranged in, and the soft connection component includes aluminium Twisted wire and the adapter for being fixed on aluminum stranded conductor both ends, the aluminum stranded conductor are arranged with respect to the domed evagination of the line of two adapters;
The adapter has fitting coupling part and a wire interconnecting piece point, the fitting coupling part be used for it is corresponding embrace folder or Terminal plate connection, the wire interconnecting piece point are connect with aluminum stranded conductor;
The fitting coupling part and the L-shaped arrangement of wire interconnecting piece point, the wire interconnecting piece point embrace folder and wiring for edge The septal direction of plate extends;The wire interconnecting piece point is equipped with jack, and the aluminum stranded conductor is inserted into jack, and and adapter By being welded and fixed.
The beneficial effect of soft connection component of the invention is: company of the aluminum stranded conductor of soft connection component with respect to two adapters itself The domed evagination setting of line, when carrying out soft connection component and embracing the attended operation of folder, terminal plate, adapter and aluminum stranded conductor are It is welded and fixed together, adapter need to be only fixedly connected with corresponding armful of folder or terminal plate;Due to fitting coupling part With the L-shaped arrangement of wire interconnecting piece point, do not need that adapter and corresponding embrace can be pressed from both sides to aluminum stranded conductor progress bending at the scene Or terminal plate is fixed, and even for mutual inductor and the shorter situation of tubular bus distance, can also easily pass through soft connection component Folder will be embraced to be electrically connected with terminal plate, meet the connection requirement of distance shorter mutual inductor and tubular bus.In addition, aluminum stranded conductor is in arch The setting of shape evagination, fitting coupling part and the L-shaped arrangement of wire interconnecting piece point, aluminum stranded conductor is integrally bent into arch can be realized The connection of aluminum stranded conductor and adapter embraces folder compared with the aluminum stranded conductor between terminal plate with being connected in the prior art, aluminum stranded conductor Bending number and bending angle reduce, and can preferably avoid aluminum stranded conductor broken lot.
The jack is groove backwards to the part of inserted terminal as a preferred technical solution,.
The utility model has the advantages that further increasing the stability maintenance of aluminum stranded conductor and joint.
The adapter is L-shaped laminated structure as a preferred technical solution,.
The utility model has the advantages that adapter structure is simple, design is easy to process, and light weight.
Detailed description of the invention
Fig. 1 is the connection status figure of mutual inductor and tubular bus in the prior art;
Fig. 2 is the main view of the specific embodiment of connection gold utensil component of the invention;
Fig. 3 is the left view of the specific embodiment of connection gold utensil component of the invention;
Fig. 4 is the top view of the specific embodiment of connection gold utensil component of the invention;
Fig. 5 is that the connection gold utensil component in Fig. 2 is connected to the state diagram between mutual inductor and tubular bus;
Fig. 6 is the structural schematic diagram of adapter in Fig. 2;
Fig. 7 is the structural schematic diagram that folder is embraced in Fig. 2;
Fig. 8 is the structural schematic diagram of terminal plate in Fig. 2.
In figure: 1- embraces folder;2- terminal plate;3- aluminum stranded conductor;4- adapter;5- bolt;6- connecting terminal;11- adapter connects Socket part point;21- horizontal connecting portions;The vertical coupling part 22-;23- mounting hole;41- fitting coupling part;The connection of 42- conducting wire Part;43- jack;44- bolt hole;101- tubular bus;102- embraces folder;103- aluminum stranded conductor;104- terminal plate;105- mutual inductance Device;106- bracket;107- connection gold utensil component.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The specific embodiment of connection gold utensil component of the invention, as shown in Figures 2 to 4, connection gold utensil component include embracing folder 1 With terminal plate 2, as shown in figure 5, carry out mutual inductor 105 with tubular bus 101 when being electrically connected by connection gold utensil component 107, Mutual inductor 105 is fixed on bracket 106, and connection gold utensil component 107 is connected electrically between mutual inductor 105 and tubular bus 101, tool Body, it embraces folder 1 and holds tightly on tubular bus 101, terminal plate 2 is fixedly connected with the connecting terminal 6 of mutual inductor 105.Connection gold utensil Component 107 further includes that the soft connection component embraced between folder 1 and terminal plate 2 is arranged in, and soft connection component includes aluminum stranded conductor 3 and fixes Adapter 4 at 3 both ends of aluminum stranded conductor, aluminum stranded conductor 3 is with respect to the domed evagination setting of the line of two adapters 4.
As shown in fig. 6, the adapter 4 in the present embodiment is L-shaped, L shape has 42 Hes of orthogonal wire interconnecting piece point Fitting coupling part 41, and wire interconnecting piece point 42 extends along the septal direction for embracing folder 1 and terminal plate 2, wire interconnecting piece point 42 It is equipped with jack 43, jack 43 is groove backwards to the part of inserted terminal, and aluminum stranded conductor 3 is inserted into jack 43 and is weldingly fixed on switching On first 4.Bolt hole 44 there are three setting on fitting coupling part 41 is equipped at intervals with adapter interconnecting piece on folder 1 as shown in figure 4, embracing Divide 11, is equipped with threaded hole corresponding with the bolt hole 44 on corresponding adapter 4 on each adapter coupling part 11.
As shown in figure 8, terminal plate 2 includes horizontal connecting portions 21 and vertical coupling part 22, on horizontal connecting portions 21 Equipped with threaded hole corresponding with the bolt hole 44 on corresponding adapter 4.The bolt hole 44 that bolt 5 passes through adapter 4 is threadedly coupled In corresponding threaded hole, realize embrace folder 1, terminal plate 2 be fixedly connected with corresponding adapter 4, realization mutual inductor 105 with it is tubular Through-flow connection between bus 101.
As shown in fig. 7, the folder 1 of embracing in the present embodiment is two halves formula, the both ends for embracing 1 circumferential direction of folder are equipped with connecting hole, After embracing folder 1 and being clamped on 101 periphery of tubular bus, bolt 5 passes through and embraces the connecting hole at 1 both ends of folder, is arranged washer on bolt 5 And fixed with nut, make to embrace 1 holding of folder on tubular bus 101.Folder 1 of embracing in the present embodiment is cast as by cast aluminium alloy gold Type, and embrace 1 all seamed edges of folder and carry out corners processing, it can effectively prevent and embrace 1 generation corona phenomenon of folder;Setting is on embracing folder 1 Connecting hole be counterbore,
As shown in figure 8, the vertical coupling part 22 of terminal plate 2 is equipped with the mounting hole connecting with the connecting terminal 6 of mutual inductor 105 23,105 connecting terminal of mutual inductor is fixedly connected with vertical coupling part 22 by bolt 5, washer and nut.In the present embodiment Terminal plate 2 carries out corners processing by cast aluminium alloy gold integral casting forming, all seamed edges, can effectively prevent the production of terminal plate 2 Raw corona phenomenon.
Soft connection component in the present embodiment is equipped with six groups, and every group of soft connection component includes an aluminum stranded conductor 3 and be fixed on Two adapters 4 at 3 both ends of aluminum stranded conductor, and six groups of soft connection components are circumferentially evenly distributed with state, form cage type screening arrangement, prevent Corona effects are good.
The connection of the mutual inductor 105 and tubular bus 101 in converter station is able to satisfy by the connection gold utensil component 107, and It is easy for installation, it is artistically decorated, anti-corona effect is good;And it can guarantee that tubular bus 101 and mutual inductor 105 are twisted in aluminium when earthquake In opposite free state in 3 length allowed band of line, it is ensured that normal use wants under strong wind, earthquake and other bad working environments It asks, guarantees power grid reliability service;It can solve between the connecting terminal of mutual inductor 105 and 101 spacing of tubular bus and theory simultaneously It can not installation question away from connection gold utensil caused by inconsistent.In addition, being embraced between folder and terminal plate with being connected in the prior art Aluminum stranded conductor is compared, and of the invention aluminum stranded conductor 3 need to integrally be bent into arch, the bending number and bending angle of aluminum stranded conductor 3 Reduce, can preferably avoid 3 broken lot of aluminum stranded conductor.
It is groove that adapter 4 in the present embodiment, which is equipped with the jack 43 being inserted into for flexible circuit conductor 3 backwards to the part of inserted terminal,. In other embodiments, the jack on adapter can also be in the consistent straight hole of axial aperture.
Adapter 4 in the present embodiment is fixedly connected with an armful folder 1, adapter 4 with terminal plate 2 by bolt 5;In other realities It applies in example, adapter can also be fixedly connected by welding with terminal plate or an armful folder or adapter passes through with terminal plate or an armful folder Clamping element grips connection.
Adapter 4 in the present embodiment is L-shaped laminated structure, in other embodiments, adapter can also for thickness compared with Big L shape block structure.
The specific embodiment of soft connection component of the invention, soft connection component and above-mentioned connection gold utensil group in the present embodiment The structure of soft connection component described in the specific embodiment of part is identical, repeats no more.

Claims (7)

1. connection gold utensil component, including folder and terminal plate are embraced, folder is embraced for holding tightly in tubular bus, and terminal plate is used for and mutual inductance The connecting terminal of device is fixedly connected;
It is characterized in that the connection gold utensil component further includes that the soft connection component embraced between folder and terminal plate is arranged in, it is described soft Connection component includes aluminum stranded conductor and the adapter for being fixed on aluminum stranded conductor both ends, and the aluminum stranded conductor is in arch with respect to the line of two adapters The setting of shape evagination;
The adapter has fitting coupling part and a wire interconnecting piece point, the fitting coupling part be used for it is corresponding embrace folder or Terminal plate connection, the wire interconnecting piece point are connect with aluminum stranded conductor;
The fitting coupling part and the L-shaped arrangement of wire interconnecting piece point, the wire interconnecting piece point edge armful folder and terminal plate Septal direction extends;The wire interconnecting piece point is equipped with jack, and the aluminum stranded conductor is inserted into jack, and is passed through with adapter It is welded and fixed.
2. connection gold utensil component according to claim 1, characterized in that the jack is slope backwards to the part of inserted terminal Mouthful.
3. connection gold utensil component according to claim 1 or 2, characterized in that the fitting coupling part presss from both sides or connects with embracing Line plate is bolted to connection.
4. connection gold utensil component according to claim 1 or 2, characterized in that the adapter is L-shaped laminated structure.
5. soft connection component, characterized in that including for the soft connection component embraced between folder and terminal plate, the soft company to be arranged in Connected components include aluminum stranded conductor and the adapter for being fixed on aluminum stranded conductor both ends, and the aluminum stranded conductor is domed with respect to the line of two adapters Evagination setting;
The adapter has fitting coupling part and a wire interconnecting piece point, the fitting coupling part be used for it is corresponding embrace folder or Terminal plate connection, the wire interconnecting piece point are connect with aluminum stranded conductor;
The fitting coupling part and the L-shaped arrangement of wire interconnecting piece point, the wire interconnecting piece point embrace folder and wiring for edge The septal direction of plate extends;The wire interconnecting piece point is equipped with jack, and the aluminum stranded conductor is inserted into jack, and and adapter By being welded and fixed.
6. soft connection component according to claim 5, characterized in that the jack is groove backwards to the part of inserted terminal.
7. soft connection component according to claim 5 or 6, characterized in that the adapter is L-shaped laminated structure.
CN201910650516.3A 2019-07-18 2019-07-18 A kind of connection gold utensil component and soft connection component Pending CN110534986A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910650516.3A CN110534986A (en) 2019-07-18 2019-07-18 A kind of connection gold utensil component and soft connection component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910650516.3A CN110534986A (en) 2019-07-18 2019-07-18 A kind of connection gold utensil component and soft connection component

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CN201594591U (en) * 2010-01-14 2010-09-29 浙江泰昌实业有限公司 Header double-layer T-connection two-to-one telescopic hardware fitting for 500KV power transformation direct current melting ice
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CN206313190U (en) * 2016-12-27 2017-07-07 江苏捷峰电力器材有限公司 A kind of adjustable pitch pipe bus telescoping wire clamp
CN206332409U (en) * 2016-10-17 2017-07-14 国家电网公司 A kind of current conversion station is with sliding/be fixedly connected excessively stream gold utensil
CN107359574A (en) * 2017-08-15 2017-11-17 南方电网科学研究院有限责任公司 A kind of pipe mother connection gold utensil
CN206908237U (en) * 2017-07-06 2018-01-19 浙江侨泰电力设备有限公司 Pipe bus telescoping wire clamp
CN207053142U (en) * 2017-08-15 2018-02-27 南方电网科学研究院有限责任公司 A kind of pipe mother connection gold utensil
CN207426618U (en) * 2017-09-20 2018-05-29 中国电建集团四平线路器材有限公司 Ultra-high voltage transformer station tube type bus lead-out wire gold utensil
CN210007316U (en) * 2019-06-26 2020-01-31 洛阳万基发电有限公司 kinds of cross-road pipe bus and cross-road hardware

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101237130A (en) * 2007-01-31 2008-08-06 李谋祥 Tubular bus telescopic wire clamp
CN201360126Y (en) * 2009-01-09 2009-12-09 兰州超高压输变电公司 Tube bus sliding support type T connection fitting
CN201466614U (en) * 2009-06-19 2010-05-12 河南省电力勘测设计院 Pipe type bus bar telescopic hardware
CN101593877A (en) * 2009-06-26 2009-12-02 中国电力工程顾问集团公司 A kind of connected system that comprises ultra-high voltage main device and aluminum tubular conductor
CN201590489U (en) * 2010-01-14 2010-09-22 浙江泰昌实业有限公司 Tubular bus T-joint hardware fitting for 500kV power transformation direct-current thawing
CN201594591U (en) * 2010-01-14 2010-09-29 浙江泰昌实业有限公司 Header double-layer T-connection two-to-one telescopic hardware fitting for 500KV power transformation direct current melting ice
CN201656364U (en) * 2010-04-30 2010-11-24 浙江省电力设计院 Large-current wall bushing link end fitting
CN202153559U (en) * 2011-08-16 2012-02-29 中国电力工程顾问集团公司 Flexible connection fitting for connecting pipe-type aluminum conductor and main equipment
CN202276111U (en) * 2011-10-25 2012-06-13 浙江泰昌实业有限公司 Anti-corona type tubular bus T-connected tubular bus telescoping tool
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CN103915799A (en) * 2014-04-02 2014-07-09 国家电网公司 Hardware fitting for 800 kV direct-current wall bushing and current transformer connecting and supporting
CN206022660U (en) * 2016-09-30 2017-03-15 中国南方电网有限责任公司超高压输电公司 Valve tower single tube mother's corner link fitting
CN206332409U (en) * 2016-10-17 2017-07-14 国家电网公司 A kind of current conversion station is with sliding/be fixedly connected excessively stream gold utensil
CN206313190U (en) * 2016-12-27 2017-07-07 江苏捷峰电力器材有限公司 A kind of adjustable pitch pipe bus telescoping wire clamp
CN206908237U (en) * 2017-07-06 2018-01-19 浙江侨泰电力设备有限公司 Pipe bus telescoping wire clamp
CN107359574A (en) * 2017-08-15 2017-11-17 南方电网科学研究院有限责任公司 A kind of pipe mother connection gold utensil
CN207053142U (en) * 2017-08-15 2018-02-27 南方电网科学研究院有限责任公司 A kind of pipe mother connection gold utensil
CN207426618U (en) * 2017-09-20 2018-05-29 中国电建集团四平线路器材有限公司 Ultra-high voltage transformer station tube type bus lead-out wire gold utensil
CN210007316U (en) * 2019-06-26 2020-01-31 洛阳万基发电有限公司 kinds of cross-road pipe bus and cross-road hardware

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Application publication date: 20191203