CN208127096U - A kind of high-power disconnecting switch of middle pressure AC and DC - Google Patents
A kind of high-power disconnecting switch of middle pressure AC and DC Download PDFInfo
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- CN208127096U CN208127096U CN201820450465.0U CN201820450465U CN208127096U CN 208127096 U CN208127096 U CN 208127096U CN 201820450465 U CN201820450465 U CN 201820450465U CN 208127096 U CN208127096 U CN 208127096U
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Abstract
The high-power disconnecting switch that AC and DC is pressed in one kind is disclosed in the utility model, including base and the conduction being arranged on base and insulating element, the conductive and insulating element includes the conductive component of the insulator being arranged on base and setting on the insulator, the conductive component includes input terminal, output terminal and one end and the hinged dynamic plug-in strip component of output terminal being arranged on the insulator, the dynamic plug-in strip component includes more copper bars, the copper bar both ends are respectively arranged with contact, the contact uses beryllium-bronze, hardness HRC42-44.The disconnecting switch has the characteristics that performance is stable, at low cost, long service life, can meet the wilderness demand of the tractive power supply systems such as subway in urban rail transit in China, light rail, cloud rail and high power three-phase four-wire system alternating current power grid.
Description
Technical field
The utility model relates to a kind of to can turn in high-power electrical power trans mission/distribution system/power supply is disconnected, using in middle pressure
(3.6kV), high current (5.3kA), the dual-purpose high-power disconnecting switch of AC and DC；It is mainly used in urban track traffic traction
In the electrical power trans mission/distribution system of power supply substation.By the output of high-power disconnecting switch, city underground, light rail, cloud rail, rail are provided
Electric energy needed for electric car, trolleybus operation.
In middle pressure three-phase four-wire system utility grid, and in metallurgy, machinery, chemical industry, automobile, shipbuilding, water power, wind-powered electricity generation, original
It is sub can industry, and be related to middle pressure in every case, the field of high current suffers from and is widely applied.
Background technique
China starts late in field of urban rail, and the technical level in certain fields lags behind developed country；It cuts
Only 2015, all city rail tractive power supply systems in China, critical electrical accessory, all using external import, wherein wrapping
Include high-power disconnecting switch product.
China's high-power disconnecting switch applied by tractive power supply system is initially the France introduced by Siemens Company
Shu Matuo (SHAWMUT) Products, the followed by Sai Xuelong (SECHRON) of Switzerland and the Alpha (ALFA) of Czech, substantially
On monopolized entire Chinese rail traffic market.Shu Matuo (SHAWMUT) Products are preferable, but the production of same size and model
The price that imperial (SECHRON) and Alpha (ALFA) company is avenged in the match of product price wants high, therefore mainly answers on domestic market
It is Sai Xuelong (SECHRON) and this two product of Alpha (ALFA) company.
Existing high-power disconnecting switch usually there is a problem of following on conductive component：
1. disconnecting switch moves plug-in strip upper contact head using silver contact, both ends input is pressed to, output copper tip generallys use
Be sheet-type leaf spring, pressure is weaker, and insufficient pressure causes contact resistance to increase, and disconnecting switch temperature in use can increase
Greatly.
2. the dynamic plug-in strip component of disconnecting switch and input, output copper tip are using due in manufacture and material
In current density be up to 2.5-3A/mm2, in use, its temperature can further be made to increase in enclosed type electric gas holder.Hold in this way
The fever of switch is easily caused, and forms vicious circle： And
User is caused to need to carry out forced air cooling in electrical cabinet using two fans, and some disconnecting switch to break down are conductive
Component can all become black, it is known that the disconnecting switch temperature to break down often alreadys exceed 400 DEG C.
3. disconnecting switch base is formed by 4mm thick steel plate bending, Form and position error makes all in 0.2mm or more mounted in machine
All parts on seat can only adjust at random one by one, and Product Assembly size is different, and interchangeability is poor.
4. disconnecting switch overall mechanism is cumbersome, operator often can't see the correct position of dynamic plug-in strip component, practicability
There are hidden danger in operability.
Utility model content
Utility model aims to solve the above-mentioned technical problems in the prior art, a kind of high quality is provided
The high-power disconnecting switch of middle pressure AC and DC, to meet the tractions such as subway in urban rail transit in China, light rail, cloud rail confession
The wilderness demand of electric system and high power three-phase four-wire system alternating current power grid.
In order to solve the above technical problems, the technical solution adopted in the utility model is as follows：
A kind of high-power disconnecting switch of middle pressure AC and DC, including base and the conduction and insulation that are arranged on base
Component, the conductive and insulating element include the conductive component of the insulator being arranged on base and setting on the insulator, institute
Stating conductive component includes input terminal, output terminal and one end and the hinged dynamic lock of output terminal being arranged on the insulator
Knife assembly, the dynamic plug-in strip component include more copper bars, and the copper bar both ends are respectively arranged with contact, and the contact is green using beryllium
Copper, hardness HRC42-44.
In above-mentioned technical proposal, further, the beryllium-bronze uses QBe2.
In above-mentioned technical proposal, further, the contact is snap rivet structure, and riveting connects between contact and copper bar
It connects, contact cup head diameter is 12-15mm.
In above-mentioned technical proposal, further, it is respectively set on each copper bar there are three contact, three contacts are in copper bar
Upper distribution triangular in shape, each contact are located at the end positions of each copper bar.
In above-mentioned technical proposal, further, two of them contact, which is located on copper bar, moves plug-in strip member hinges one end, another
Contact, which is located on copper bar, moves plug-in strip component free end.
In above-mentioned technical proposal, further, the dynamic plug-in strip component includes four row's copper bar components of horizontal Tile setting,
Every row's copper bar component is made of side by side two copper bars.
In above-mentioned technical proposal, further, the output terminal and input terminal include wiring end plate and conducting end
Head, the conduction end are welded on wiring end plate by phosphor-copper soldering processes.
In above-mentioned technical proposal, further, it is provided on the wiring end plate and is matched with conductive end lower end surface
Groove, conductive end lower end is arranged in groove, is provided with certain gap between groove inner wall and conductive end, described to lead
Multiple boss are provided on electric end lower end surface, make that there is certain gap between conductive end lower end surface and bottom portion of groove；
Be provided with connecting hole in the groove, on conductive end be provided with fixation hole on connecting hole corresponding position, it is conductive
End between screw and wiring end plate by being fixedly connected；
P-Cu Brazing Materials are placed in gap between above-mentioned groove and conductive end, heating makes brazing filler metal melts, after making fusing
Solder flow into and be filled into the gap between groove and conductive end, conductive end is fixedly connected on after solder cooled and solidified
On wiring end plate.
Beneficial effect possessed by the utility model：
1) isolation switch contact uses beryllium-bronze material, and after heat treatment hardness can reach HRC43 ± 1, hardness to contact
Height, wear in use it is small will not even wear, improve the service life of disconnecting switch；Beryllium bronze alloy material
Contact folding when will not generate electric arc, make contact have good anti electric arc corrosion performance；Beryllium-bronze itself has simultaneously
Good conductivity, conducts electricity very well, and can effectively reduce the contact resistance of disconnecting switch, meets relevant criterion requirement；
2) 3 structure of contact terminals are set on the disconnecting switch conductive component copper bar, using the first two latter topology layout, shape
At three-point support structure, each copper bar can be automatically adjusted, make sufficiently connect between contact and conductive terminal on each copper bar
Touching, without being influenced by each component processing, assembly accumulation error；
3) conductive terminal uses phosphor bronze soldering processes in the disconnecting switch, reduces the processing cost of conductive terminal；It leads
Welding structure in electric terminal between wiring end plate and conductive end is simple, can effectively ensure that between wiring end plate and conductive end
Welding quality.
Detailed description of the invention
Fig. 1 is the utility model structural front view.
Fig. 2 is base and transmission parts structure chart in the utility model.
Fig. 3 is conductive and insulating element structure chart in the utility model.
Fig. 4 is conductive terminal welding structure schematic diagram in the utility model；Wherein A is that the cooperation of conductive terminal welding structure is shown
It is intended to, B is welding structure schematic diagram on wiring end plate.
Fig. 5 is copper bar upper contact head position distribution schematic diagram in the utility model.
Fig. 6 is driving and control unit structure chart in the utility model；Wherein A is control unit structure chart, and B is driving portion
Part structure chart.
In figure：
I, base and transmission parts；
1001, base；1002, main shaft；1003, left end cap；1004, intermediate swing rod；1005, pendulum shaft；1006, washer；
1007, right end cap；
II, conductive and insulating element；
2001, conductive terminal；2002, upper copper bar；2003, lower copper bar；2004, pin shaft；2005, insulator；2006, it insulate
Pull rod；2007, front contact；2008, partition；2009, disk spring；2010, compression spring axis, 2013, rear contact；2014, terminals
Plate；2015, conductive end；2016, groove, 2017, boss, 2018, connecting hole, 2019, fixation hole；
III, driving and control unit；
3001, upper padding plate；3002, lower bolster；3004, collision block disk；3006, motor base；3007, shield；3008, big
Bevel gear；3009, microswitch；3011, combined floodgate collision block；3012, separating brake collision block；3014, bevel pinion；3016, DC low-speed
Motor.
Specific embodiment
Such as Fig. 1, the disconnecting switch in the utility model is mainly by base and transmission parts I, conductive and insulating element II
With driving and control unit III, three big component compositions.The disconnecting switch and each component are carried out below in conjunction with attached drawing detailed
It is described as follows：
Base and transmission parts I
Such as Fig. 2, the braking when the left and right sides, which is respectively arranged with, can make plug-in strip component in final position on aluminium base 1001
Left end cap 1003, and the right end cap 1007 of main shaft end-play can be set up, main shaft is provided between left end cap and right end cap
1002 and the intermediate swing rod 1004 that is connected on main shaft, pendulum shaft 1005, pendulum shaft are provided on intermediate 1004 end of swing rod
Insulated pull rod 2006 is connected on 1005, is connected between insulated pull rod 2006 and pendulum shaft 1005 for turning joint.Insulated pull rod
2006 other ends connect dynamic plug-in strip component, and hinge connects between insulated pull rod 2006 and dynamic plug-in strip component.When main shaft 1002 rotates
Intermediate swing rod 1004 is driven to rotate, intermediate swing rod 1004 pulls insulated pull rod 2006, and insulated pull rod 2006 pulls dynamic plug-in strip component
It makes rotating motion, realizes " combined floodgate " downwards and the operation of " separating brake " upwards.
In the component, rotation connection between main shaft and left end cap and right end cap and between pendulum shaft and intermediate swing rod,
It is all made of needle roller bearing without inner ring.All through Overheating Treatment, hardness reaches HRC62 ± 1 for main shaft and pendulum shaft, using as needle roller axis
The inner ring held.It can be reduced between main shaft and left end cap and right end cap using needle roller bearing without inner ring to assembly essence in disconnecting switch
The requirement of degree, to reduce the requirement of concentricity between left end cap and right end cap on base.Compared to traditional Dry Sliding
Pair, the friction between rotatable parts can be reduced to coefficient of rolling friction 0.003 by Dry Sliding coefficient 0.15, make entirely to be isolated
The operating force of switch transmission parts reduces 50 times.
Conductive and insulating element II
Such as Fig. 3, there are two insulators 2005 for setting on above-mentioned aluminium base, and installation is led respectively on two insulators 2005
The copper conductive terminal 2001 of electrical components, respectively input terminal and outlet terminal.Insulator 2005 is in aluminium base and conductive terminal
Between formed it is electrically isolated.Disconnecting switch is vertically-mounted when in use, and input terminal is fixedly mounted on the insulator being located above, and makees
For input supply terminal；Output terminal is fixedly mounted in underlying insulator, as out-put supply end.
Dynamic plug-in strip component includes four row's copper bar components of horizontal Tile setting, and every row's copper bar component is by two arranged side by side group of copper bar
At respectively upper copper bar 2002 and lower copper bar 2003.Dynamic plug-in strip component in the disconnecting switch includes totally 8 copper bars, in copper bar
Upper riveting has copper alloy contact.Pass through compression spring axis 2010, butterfly spring 2009, the connection composition of partition 2008 between each copper bar component
Dynamic plug-in strip component.Dynamic plug-in strip component one end is articulated on underlying output terminal by pin shaft 2004, as dynamic plug-in strip group
The center of rotation of part rotates under the pulling of insulated pull rod, and dynamic plug-in strip component is rotated down disconnecting switch " combined floodgate ", rotates upwards
Disconnecting switch " separating brake ".
In the dynamic plug-in strip component formed such as Fig. 5, above-mentioned 8 copper bars, pressing has three copper alloys respectively on every copper bar
Contact, the distribution triangular in shape on copper bar of three contacts form 3 point-supported rock-steady structures.Two of them contact is located at copper bar
Upper dynamic plug-in strip member hinges one end, is front contact 2007；Another contact, which is located on copper bar, moves plug-in strip component free end, is rear contact
2013；The first two latter topology layout is formed on copper bar.Since copper bar processing thickness is there are error, copper alloy on every copper bar
Rigging error and conductive terminal processing and rigging error etc. of the height error and contact of contact on copper bar, these above-mentioned mistakes
The accumulative of difference will cause effectively contact between copper bar and conductive terminal, to reduce between contact and conductive terminal
Contact area increases contact resistance, increases the current loss of disconnecting switch.Using the three of three contacts of setting on copper bar
Point support construction acts in conjunction with the activity adjustment of butterfly spring, can be automatically adjusted to each copper bar, make the contact on each copper bar
It can be come into full contact between conductive terminal, ensure that the contact resistance between dynamic plug-in strip component and conductive terminal.
Above-mentioned copper alloy contact is all made of beryllium-bronze, after Overheating Treatment, its hardness is made to reach HRC43 ± 1.It is preferred that using
QBe2.Using beryllium-bronze as contact material, disconnecting switch will not generate electric arc in moving process, increase the use of contact
Service life.Since contact hardness wants high compared with conductive terminal hardness, wiping only occurs in use, will not even grind for contact
Damage solves the problems, such as easily to wear in conventional electrical industry using silver contact.Compared to silver contact, which is adopted
With beryllium-bronze, the processing cost of contact is reduced.
Contact in dynamic plug-in strip component is snap rivet structure, and riveting connects between contact and copper bar, contact cup head
Diameter is 12-15mm.
1 different metal conductivity coefficient vs of table
As can be known from Table 1, conductivity difference and little between silver and beryllium-bronze；Each copper bar on dynamic plug-in strip component simultaneously
On be respectively set three contacts, 8 copper bars totally 24 copper alloy contacts；And by increasing contact diameter, increase each contact
Contact area between conductive terminal makes to move the contact resistance between plug-in strip component and conductive terminal in disconnecting switch in 6-8 μ
Ω meets the requirement of disconnecting switch electrical performance criteria (international standard requires to be lower than 20 μ Ω).
Above-mentioned copper conductive terminal 2001 (input terminal and output terminal) is welded to form by two parts, including wiring end plate
2014 and conductive end 2015, it is welded to connect between the two using soldering processes.Made using good fluidity, low-cost phosphor bronze
Conductive end is fixed on wiring end plate instead of noble silver solder for solder.
The welding structure and welding procedure that conductive terminal uses are as follows：As shown in figure 4, on wiring end plate 2014 setting with
The groove 2016 that conductive 2015 lower end surface of end matches, conductive 2015 lower end of end are arranged in groove 2016, groove
Certain gap is provided between 2016 inner walls and conductive end 2015；It is arranged on conductive 2015 lower end surface of end simultaneously multiple
Boss 2017 makes have certain gap between conductive end lower end surface and bottom portion of groove.It is arranged in 2016 bottom of groove and connects
Hole 2018, on conductive end with fixation hole 2019, connecting hole 2018 and fixation hole 2019 are set on the corresponding position of connecting hole
It is threaded hole, conductive end is fixed on the groove of wiring end plate by screw by the mounting screw in connecting hole and fixation hole
It is interior.
When welding operation, phosphor bronze solder is placed in the gap between groove and conductive end, conductive terminal is put into
Into batch-type furnace, it is passed through protection gas, after being heated to 750-800 DEG C, forces heating to keep solder sufficiently molten at soldering with oxy-acetylene
Change, the solder after fusing flows into and be filled into the gap between groove and conductive end, can be realized after solder cooled and solidified
Soldering connection between conductive end and wiring end plate.
Driving and control unit III
As shown in Figure 6B, the utility model disconnecting switch is formed using DC low-speed motor 3016 and two-stage gear reduction case
Low speed power device drives main shaft, provides driving force for the rotation of main shaft；It is 15 revs/min that it, which is exported, torque 12N*M.
DC low-speed motor 3016 is fixedly mounted on base 1001 by motor base 3006.90 ° of friendships are connected in its output end simultaneously
Pitch the 1 of angle：3 deceleration bevel gear pairs, bevel gear pair include the bevel gear wheel 3008 and bevel pinion 3014 of engagement, pass through bevel gear
Pair is further decelerated to 5 revs/min, while torque rises to 36N*M, can meet the requirement of disconnecting switch transmission parts driving.
Bevel gear pair is protected using shield 3007 made of transparent polycarbonate material, and the movement of bevel gear can be observed
Situation, convenient for the artificial monitoring to bevel gear.
As shown in Figure 6A, control unit is included in when dynamic plug-in strip component movement is at the final position of " combined floodgate " and " separating brake "
When corresponding setting 4 microswitches 3009, microswitch 3009 is fixedly mounted on machine by upper padding plate and lower bolster respectively
The two sides of collision block disk on seat.Collision block disk 3004 is provided on one end that main shaft 1002 stretches out outside left end cap, on collision block disk 3004
It is provided with combined floodgate collision block 3011 and separating brake collision block 3012, combined floodgate collision block 3011 and separating brake collision block 3012 are arrived in dynamic plug-in strip component movement
When conjunction/open position, touched respectively with 4 microswitches of the position, control action process is as follows：
1. when dynamic plug-in strip component movement is to " combined floodgate " or " separating brake " final position, i.e. combined floodgate collision block or separating brake collision block difference
It is touched with 4 microswitches of the corresponding position, cuts off the power supply of DC low-speed motor at this time, move the stop motion of plug-in strip component；
2. the dynamic online position signal of plug-in strip component is sent to central control board by disconnecting switch, central control board is obtained completely
Each disconnecting switch in line position information, realize the on-line monitoring to all fronts power transmission and distribution situation.
The design of high-power disconnecting switch and technical requirements that AC and DC is pressed in the utility model follow International Power committee
It is closed in the international standard and national standard (GB14048.3-2002) of member's meeting (IEC60947.1-2011) and (IEC60947.3-2005)
In disconnecting switch product design standard and specification, and every type approval test is passed through.
The description and the appended drawings of the utility model be considered as it is illustrative and not restrictive, the utility model basis
On, for those skilled in the art according to disclosed technology contents, not needing creative labor can be to some of technology
Feature makes some replacements and deformation, within the protection scope of the present utility model.
Claims (8)
1. the high-power disconnecting switch of AC and DC is pressed in one kind, including base and the conduction being arranged on base and insulation division
Part, the conductive and insulating element includes the conductive component of the insulator being arranged on base and setting on the insulator, special
Sign is：The conductive component includes input terminal, output terminal and one end and the output terminal hinge being arranged on the insulator
The dynamic plug-in strip component of connection, the dynamic plug-in strip component includes more copper bars, and the copper bar both ends are respectively arranged with contact, the touching
Head uses beryllium-bronze, hardness HRC42-44.
2. the high-power disconnecting switch of pressure AC and DC according to claim 1, it is characterised in that：The beryllium-bronze is adopted
Use QBe2.
3. the high-power disconnecting switch of middle pressure AC and DC according to claim 1 or claim 2, it is characterised in that：The contact
For snap rivet structure, riveting is connected between contact and copper bar, and contact cup head diameter is 12-15mm.
4. the high-power disconnecting switch of pressure AC and DC according to claim 1, it is characterised in that：On each copper bar
It is respectively set there are three contact, the distribution triangular in shape on copper bar of three contacts, each contact is located at the both ends position of each copper bar
It sets.
5. the high-power disconnecting switch of pressure AC and DC according to claim 4, it is characterised in that：Two of them contact
Plug-in strip member hinges one end is moved on copper bar, another contact, which is located on copper bar, moves plug-in strip component free end.
6. the high-power disconnecting switch of pressure AC and DC according to claim 4, it is characterised in that：The dynamic plug-in strip group
Part includes four row's copper bar components of horizontal Tile setting, and every row's copper bar component is made of side by side two copper bars.
7. the high-power disconnecting switch of pressure AC and DC according to claim 1, it is characterised in that：The output terminal
It include wiring end plate and conductive end with input terminal, the conduction end is welded on wiring end plate by phosphor-copper soldering processes
On.
8. the high-power disconnecting switch of pressure AC and DC according to claim 7, it is characterised in that：The wiring end plate
On be provided with the groove matched with conductive end lower end surface, conductive end lower end is arranged in groove, groove inner wall with lead
It is provided with certain gap between electric end, is provided with multiple boss on the conduction end lower end surface, makes conductive end lower end
There is certain gap between face and bottom portion of groove；
Be provided with connecting hole in the groove, on conductive end with fixation hole, conductive end are provided on connecting hole corresponding position
By being fixedly connected between screw and wiring end plate；
P-Cu Brazing Materials are placed in gap between above-mentioned groove and conductive end, heating makes brazing filler metal melts, the pricker after making fusing
Stream enters and is filled into the gap between groove and conductive end, and conductive end is fixedly connected on wiring after solder cooled and solidified
On end plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820450465.0U CN208127096U (en) | 2018-04-02 | 2018-04-02 | A kind of high-power disconnecting switch of middle pressure AC and DC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820450465.0U CN208127096U (en) | 2018-04-02 | 2018-04-02 | A kind of high-power disconnecting switch of middle pressure AC and DC |
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| Publication Number | Publication Date |
|---|---|
| CN208127096U true CN208127096U (en) | 2018-11-20 |
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ID=64194387
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820450465.0U Active CN208127096U (en) | 2018-04-02 | 2018-04-02 | A kind of high-power disconnecting switch of middle pressure AC and DC |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962663A (en) * | 2018-04-02 | 2018-12-07 | 杨维雄 | A kind of high-power disconnecting switch of middle pressure AC and DC |
| CN109461614A (en) * | 2018-12-21 | 2019-03-12 | 广东精益电力设备有限公司 | A kind of operator brake gear of novel disconnecting switch |
-
2018
- 2018-04-02 CN CN201820450465.0U patent/CN208127096U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962663A (en) * | 2018-04-02 | 2018-12-07 | 杨维雄 | A kind of high-power disconnecting switch of middle pressure AC and DC |
| CN109461614A (en) * | 2018-12-21 | 2019-03-12 | 广东精益电力设备有限公司 | A kind of operator brake gear of novel disconnecting switch |
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Effective date of registration: 20200519 Address after: No. 1501, unit 1, building 1, No. 11, Dongzhu street, Qingyang District, Chengdu City, Sichuan Province Co-patentee after: Yang Weixiong Patentee after: Jin Xiaoliang Co-patentee after: Xu Zhongfang Address before: 315000 Room 401, Chaoyang new village, Haishu District, Ningbo, Zhejiang, 401 Patentee before: Yang Weixiong |