CN2909495Y - Double-break combined column superhigh voltage multi-speed breaking circuit breaker - Google Patents
Double-break combined column superhigh voltage multi-speed breaking circuit breaker Download PDFInfo
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- CN2909495Y CN2909495Y CN 200620086099 CN200620086099U CN2909495Y CN 2909495 Y CN2909495 Y CN 2909495Y CN 200620086099 CN200620086099 CN 200620086099 CN 200620086099 U CN200620086099 U CN 200620086099U CN 2909495 Y CN2909495 Y CN 2909495Y
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Abstract
The utility model relates to a breaker used for electric equipment, in particular to a double-break assembled-pillar ultra-high-voltage multiple-speed-breaking beaker, comprising an insulating pillar and a breaking apparatus mounted on the top of the insulating pillar. The breaking apparatus is connected in parallel with an equalizing capacitor. The breaking device comprises two breaking devices connected in series and two switching resistance boxes. The insulating pillar comprises a side insulating pillar supported on the breaking device and a middle insulating pillar supported on the common end of the two breaking devices, wherein the side insulating pillar comprises three side-supporting insulating pillars arranged in a triangle, and the middle insulating pillar comprises a insulating pull-bar pillar and a middle-supporting insulating pillar arranged in parallel. The utility model adopts assembled insulating pillars. The extra-high-voltage insulating pillars may be assembled to be ultra-high-voltage insulating pillars, which can efficiently reduce the cost. The breaking device has a multiple-speed-breaking function, which reduces the switching arc and operating multi-voltage.
Description
Technical field
The utility model relates to circuit breaker, especially the double-fracture combination column type superhigh voltage multiplier breaking circuit breaker that a kind of power equipment uses.
Background technology
The power equipment switch often will be used circuit breaker, The faster the better, the time is short more good more to require breaking speed in the time of as high pressure or breaker in extra high voltage use, because the moving contact of high voltage electric equipment and fixed contact are easy to generate electric arc in the time of approaching, the time of the fast more generation electric arc of breaking speed is short more, and is more little to the infringement of equipment.In addition, the alive circuit that long distance is non-loaded or load is very little minute, can in electrical network, form very high switching overvoltage when closing a floodgate.If the special equipment of these overvoltage neither ones is limited, in extra-high voltage grid, will take excessive insulation measures so, and this will inevitably increase considerably cost.The effective way of restriction switching overvoltage is exactly to come these circuit are switched with the circuit breaker that branch, switching-on resistance be housed, and divides, switching-on resistance can be with overvoltage Limiting a relatively low level.The existing primary cut-out contact that has switching-on resistance, FXT16D type SF6 contact of breaker with Alstom (China) company (ALSTOM) is representative, be made up of the moving contact and the fixed contact that are installed in the insulation cavity, fixed contact is fixedly mounted in the insulation cavity, is connected with switching-on resistance; Moving contact is hinged on the insulated tension pole, the speed of related movement of moving contact and fixed contact depends on the movement velocity of insulated tension pole, in order to improve the breaking speed of switch, has only the movement velocity that improves insulated tension pole, and this can increase substantially production cost and power consumption, the movement velocity of insulated tension pole can cause bigger motion impulsive force again after improving simultaneously, influences the useful life of equipment.My another patent application " four pole multi speed disjunction contact of extra-high-voltage breaker " (application number CN200510112962.7) provides a kind of high speed break contact, when separating brake moves, moving contact and fixed contact move simultaneously in the opposite direction, greatly improved the breaking speed of contact, the breaking capacity of circuit breaker is greatly improved.But this contact only inserts switching-on resistance when closing a floodgate, can avoid closing overvoltage, but can not avoid the gate-dividing super-voltage phenomenon.Japan is breaker in extra high voltage research country early, but mainly is to adopt the GIS scheme, must join two above operating mechanisms and ultra high voltage insulating sleeve, and reliability is low, and difficulty of processing is big.I also have a patent application " multi-stage arc suppressing breaking device for extra-high voltage circuit breaker ", and this device is equipped with branch, switching-on resistance simultaneously, has solved the problems referred to above preferably.When reality was used, above-mentioned break-up device must be furnished with insulating sleeve and just can use.Voltage level is high more, and also high more to the requirement of insulation property, the difficulty of manufacturing is also big more, and how utilizing the low insulation column that requires to be assembled into simple and reliable breaker in extra high voltage is one of new problem of facing of numerous engineers and technicians.
Summary of the invention
The purpose of this utility model provide a kind of simple and reasonable for structure reliable, with low cost, breaking speed is fast, and the double-fracture combination column type superhigh voltage multiplier breaking circuit breaker of quenching resistance is installed simultaneously.
For achieving the above object, the utility model adopts following technical scheme:
Double-fracture combination column type superhigh voltage multiplier breaking circuit breaker described in the utility model comprises insulation column and is installed in the break-up device on insulation column top, be parallel with equalizing capacitance on the break-up device, described break-up device comprises two breakers of series connection, each one group of equalizing capacitance in parallel on the breaker, insulation column comprise the side insulation column that is supported on respectively on the breaker and are supported on the intermediate insulation pillar of two breaker common ports; The side insulation column comprises three side supports insulative pillars that are triangularly arranged, and the intermediate insulation pillar comprises insulated tension pole pillar and the intermediate supports insulation column that be arranged in parallel.
Described breaker comprises insulation crust, be installed in the insulating sleeve in the insulation crust and be arranged on fixed contact and moving contact in the insulating sleeve; Be positioned at the fixedly connected resistance box of a side of fixed contact at insulation crust;
Fixed contact comprises the insulation guide plate that is fixedly installed in the insulating sleeve and is inserted into main contacts, resistance contact point and the arcing contact of insulation on the guide plate, is fixedly installed on the end casing of insulating sleeve end face, main contacts, resistance contact point and arcing contact are connected with insulation guide plate elasticity by spring respectively, main contacts is electrically connected by flexible conductor with the arcing contact, and the end of main contacts is electrically connected with the connecting rod that fixedly is inserted in the end casing; Elastic movement gap between main contacts and the insulation guide plate is less than the elastic movement gap between arcing contact and the insulation guide plate; Elastic movement gap between resistance contact point and the insulation guide plate is greater than the elastic movement gap between arcing contact and the insulation guide plate; The end of resistance contact point is electrically connected with the resistance binding post that fixedly is inserted in the end casing by flexible conductor;
Moving contact comprises interior insulation support plate, the external insulation supporting bracket that is fixedly installed in the insulating sleeve and is inserted into arc extinguishing moving contact in the two-layer insulation support plate, be installed with conductive plate on the arc extinguishing moving contact, conductive plate is between interior insulation support plate and external insulation supporting bracket; Initiatively contact and resistance moving contact are fixed together by this conductive plate and arc extinguishing moving contact, in initiatively contact, resistance moving contact, arc extinguishing moving contact are inserted on the insulation support plate, its position is corresponding with main contacts, resistance contact point, arcing contact respectively, be provided with cylinder sleeve with resistance moving contact, the corresponding position of arc extinguishing moving contact on the interior insulation support plate, the stage casing of resistance moving contact, arc extinguishing moving contact has piston, and form piston with the inwall of cylinder sleeve and cooperate, the end of arc extinguishing moving contact has connecting plate;
Resistance box comprises housing and the quenching resistance, the connecting rod extension rod that are fixedly mounted in the housing, the two ends of housing fixedly mount the resistance box end cap respectively, the two ends of quenching resistance and connecting rod extension rod all are inserted in the resistance box end cap, stretch out the plug that is partly with of resistance box end cap, one end plug matches with resistance binding post and connecting rod on the fixed contact, and other end plug is plugged on metal end caps;
The moving contact of two breakers becomes the in-line arrangement relatively and is cascaded, and connecting plate is in transmission connection by connecting rod crank arm mechanism and the drive unit that is arranged on intermediate supports insulation column bottom, and the connecting plate of two breakers is electrically connected by flexible conductor.
Described insulating sleeve comprises urceolus and is sleeved on inner core in the urceolus, and inner core is a segmental structure, and insulation guide plate, interior insulation support plate and external insulation supporting bracket are installed in the junction of each segmentation of inner core;
Under gate-dividing state, main contacts the and initiatively distance between the contact is maximum, the distance between arcing contact and the arc extinguishing moving contact secondly, between resistance contact point and the resistance moving contact apart from minimum;
The arcing contact be positioned at the insulation guide plate the center, a plurality of main contactss and resistance contact point be looped around the arcing contact around;
One side of arc extinguishing moving contact and resistance moving contact is provided with the arc blow-out pipe, and the top of arc blow-out pipe is respectively towards the top of arc extinguishing moving contact and resistance moving contact, and the piston on arc extinguishing moving contact or the resistance moving contact is run through in its lower end; Have the exhaust outlet that unidirectional valve is installed on the piston.
Drive unit is the Driven by Hydraulic Cylinder device, and its line shaft is connected with connecting plate with crank arm mechanism by insulated tension pole.
A side that is positioned at the intermediate insulation pillar at breaker is equipped with the luminous energy electronic current transducer, described luminous energy electronic current transducer comprises induction coil and the optical cable that is wrapped on the annular core, annular core and induction coil are sleeved on the connecting plate, optical cable is wrapped on the intermediate supports insulation column, induction coil is connected to the signal input part of analog-digital converter, the signal output part of analog-digital converter is connected to the signal input part of optical modulator, the signal output part of optical modulator is connected to the signal input part of optical demodulator by optical cable, the signal output part of optical demodulator is connected to signal reader, and optical demodulator and signal reader are installed on the base of intermediate supports insulation column.
Drive unit is a permanent-magnet locked hydraulic operating mechanism, comprise the differential type hydraulic cylinder, by the line shaft of Driven by Hydraulic Cylinder, the rod chamber oil duct junction of hydraulic cylinder is communicated with main accumulator by oil pipe, the rodless cavity oil duct junction of hydraulic cylinder connects main accumulator by main reversing valve, passage both sides of main reversing valve connect the rodless cavity oil duct junction and the main accumulator of hydraulic cylinder respectively by pipeline, the both sides of another passage connect the rodless cavity oil duct junction and the fuel tank of hydraulic cylinder respectively by pipeline, the oil-out of fuel tank is communicated with main accumulator by hydraulic pump and unidirectional valve; Line shaft is connected with blocking mechanism by bearing pin;
Described blocking mechanism comprises mechanism shell, be installed in iron core, wound core in the mechanism shell is arranged on permanent magnet in the mechanism shell, permanent magnet is fixedly mounted on the inwall of mechanism shell, the axis normal setting of its magnetic pole and iron core, the two ends of iron core have the latch actuation axle, the latch actuation axle passes the both sides end cap, and wherein the latch actuation axle of an end is connected with line shaft with lever by bearing pin.
After adopting technique scheme, the utlity model has following advantage:
1, adopts the combined insulation pillar, can utilize the superhigh pressure insulation column to be assembled into ultra-high-voltage post, effectively reduce production costs and difficulty of processing, and the bending resistance of pillar is strong more than 1 times.
2, resistance adopts the grouping disjunction, can satisfy simultaneously close a floodgate and separating brake to the requirement of resistance, the power that can reduce resistance consumption is more than 60%, and makes the approaching ideal value of branch, closing overvoltage value.
3, adopt the combination column type circuit breaker can remove insulating sleeve from, solved the huge difficult problem that breaker in extra high voltage is made.
4, adopt the luminous energy electric mutual inductor, do not need to be provided with separately current transformer in the breaker protection.The specification requirement that the ultra high voltage current transformer is produced is very high, cost is big, and this mode can also utilize the optical cable pillar to strengthen the mechanical strength of circuit breaker when reducing cost.
5, use permanent-magnet locked operating mechanism, hydraulic circuit is simplified significantly, and further improved the reliability of switch.
6, adopt single operation mechanism, simplified breaker in extra high voltage operating system, and improved the precision of progressive operation.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the present utility model;
Fig. 2 is the D-D cutaway view of Fig. 1;
Fig. 3 is the structural representation of break-up device;
Fig. 4 is the B-B cutaway view of Fig. 3;
Fig. 5 is the structural representation of resistance box;
Fig. 6 is the A-A cutaway view of Fig. 5;
Fig. 7 is the structural representation of luminous energy electronic current transducer;
Fig. 8 is the electrical schematic diagram of luminous energy electronic current transducer;
Fig. 9 is the structural representation of permanent-magnet locked hydraulic operating mechanism.
Embodiment
As shown in Figure 1, double-fracture combination column type superhigh voltage multiplier breaking circuit breaker described in the utility model comprises insulation column and is installed in the break-up device on insulation column top, is parallel with equalizing capacitance on the break-up device.Described break-up device comprises two breaker B1, B2 of series connection, breaker B1, B2 last each one group of equalizing capacitance C1, C2 in parallel, and the effect of equalizing capacitance C1, C2 is to be fitted on two breaker B1, B2 with voltage averaged.Insulation column comprises side insulation column that is supported on respectively on breaker B1, the B2 and the intermediate insulation pillar that is supported on two breaker common ports; The outer surface of each insulation column and breaker B1, B2 all has the insulation magnet ring.As shown in Figure 2, the side insulation column comprises three side supports insulative pillar A1 that are triangularly arranged, and the intermediate insulation pillar comprises insulated tension pole pillar A2 and the intermediate supports insulation column A3 that be arranged in parallel.This structure makes the diameter of single pillar reduce significantly, both has been convenient to production and processing, can improve integrally-built bending resistance degree and reliability again, and overall structure still can keep stable when single pillar broke down.Three side supports insulative pillar A1 only play the effect of support, insulated tension pole pillar A2 also has the effect of housing insulation pull bar A6 concurrently when having support breaker B1, B2 effect, it still is the support bar of optical cable T7 simultaneously that intermediate supports insulation column A3 not only has the effect of supporting breaker B1, B2.
Shown in Fig. 3-6, break-up device described in the utility model comprises insulation crust 1, be installed in the insulating sleeve 7 in the insulation crust 1 and be arranged on fixed contact and moving contact in the insulating sleeve 7, and the resistance box 35 that is fixedly mounted on insulation crust 1 one ends.The outside of insulation crust 1 has the magnetic skirt, has air chamber 77 between insulation crust 1 and the insulating sleeve 7, can fill insulating gass such as SF6 in the air chamber 77, also can fill insulating cement, to improve insulation effect.
In addition, for ease of installing, insulating sleeve 7 can also be designed to the structure of can segmentation installing.Insulating sleeve 7 comprises urceolus and is sleeved on inner core in the urceolus, and inner core is a segmental structure, and the parts of horizontally sets such as insulation guide plate 34, interior insulation support plate 72 and external insulation supporting bracket 73 are installed in the junction of each segmentation of inner core.In the production process, as long as sectional assembly segmentation is fitted together.Certainly, insulating sleeve 7 also can be designed to the integral structure of not segmentation.
Fixed contact comprises the insulation guide plate 34 that is fixedly installed in the insulating sleeve 7 and is inserted into main contacts 31, resistance contact point 32 and the arcing contact 33 of insulation on the guide plate 34, is fixedly installed on the end casing 50 of insulating sleeve 7 end faces.Arcing contact 33 is positioned at the center of insulation guide plate 34, spring 10 is sleeved on the arcing contact 33, and by be fixed on the arcing contact 33 spring base with spring 10 be fixed on spring base and the insulation guide plate 34 between, be fixed with the positioning tube 101 of tubular on the insulation guide plate 34 of spring base below, be enclosed within the outside of spring 10.Main contacts 31, resistance contact point 32 and arcing contact 33 all adopt this similar structure to be connected with insulation guide plate 34 elasticity by spring respectively.The effect of positioning tube 101 is spring can be located on the one hand, also just can adjust the movement clearance of arcing contact 33 by the height of adjusting positioning tube 101 on the other hand, so that match with the time difference of other contacts.Main contacts 31 and resistance contact point 32 respectively have three, spacer ring around be arranged on arcing contact 33 around.Be provided with by this annular, the diameter of arcing contact 33 is significantly increased, the curvature on top reduces, and can effectively reduce the resume combustion of capacitive electric arc.In addition, main contacts 31 separate with resistance contact point 32 be provided with after, the motional inertia of contact reduces, the speed of help improving branch, closing a floodgate.Main contacts 31 and arcing contact 33 are electrically connected by flexible conductor, and the end of main contacts 31 is electrically connected with connecting rod 37 in fixedly being inserted into end casing 50, and arcing contact 33 is inserted in the connecting rod 37 slidably; When designing the length of each contact, make main contacts 31 and the elastic movement gap of insulation between the guide plate 34 less than arcing contact 33 and the elastic movement gap of insulating between the guide plate 34; Elastic movement gap between resistance contact point 32 and the insulation guide plate 34 is greater than the elastic movement gap between arcing contact 33 and the insulation guide plate 34; The end of resistance contact point 32 is electrically connected with resistance binding post 51 in fixedly being inserted into end casing 50 by flexible conductor;
As shown in Figure 3, the moving contact active contact 141 and the resistance moving contact 142 that comprise interior insulation support plate 72, the external insulation supporting bracket 73 that is fixedly installed in the insulating sleeve 7 and be inserted into the arc extinguishing moving contact 143 that can slide up and down in the two-layer insulation support plate, can slide in the insulation support plate 72 in being inserted into.At the partial fixing between interior insulation support plate 72 and external insulation supporting bracket 73 on the arc extinguishing moving contact 143 conductive plate 1421 is installed, initiatively contact 141 and resistance moving contact 142 are fixed together with arc extinguishing moving contact 143 by this conductive plate 1421.As shown in Figure 4, in initiatively contact 141, resistance moving contact 142, arc extinguishing moving contact 143 are inserted into respectively slidably on the insulation support plate 72, its position is corresponding with main contacts 31, resistance contact point 32, arcing contact 33 respectively, is provided with cylinder sleeve 144 with resistance moving contact 142, arc extinguishing moving contact 143 corresponding positions on the interior insulation support plate 72.The stage casing of resistance moving contact 142 and arc extinguishing moving contact 143 has piston and lays respectively in separately the cylinder sleeve 144, forms piston with the inwall of cylinder sleeve and cooperates.In order to utilize the efficient of the Compressed Gas raising arc extinguishing in the cylinder sleeve 144, the piston of resistance moving contact 142 and arc extinguishing moving contact 143 is provided with the arc blow-out pipe 145 that connects piston, and the upper end open of arc blow-out pipe 145 is respectively towards the top of resistance moving contact 142 and arc extinguishing moving contact 143.In order to reduce the combined floodgate resistance, on piston, be provided with the exhaust outlet 41 of unidirectional valve.For the ease of being connected, have connecting plate 1422 at the end of arc extinguishing moving contact 143 with other equipment.
For guarantee that main contacts 31 does not produce electric arc when closing a floodgate, guarantee quenching resistance 352 effective turn-on time, prevent closing overvoltage, under gate-dividing state, should guarantee that the distance between main contacts 31 and the active contact 141 is maximum, distance between arcing contact 33 and the arc extinguishing moving contact 143 secondly, the distance minimum between resistance contact point 32 and the resistance moving contact 142.That is to say that as shown in this embodiment, under the identical situation of each contact length of moving contact, the main contacts 31 on the fixed contact is the shortest, takes second place in arcing contact 33, and resistance contact point 32 is the longest.
As shown in Figure 6, quenching resistance 352 is divided into three groups, is electrically connected with three resistance contact points 32 by lead, resistance binding post 51 respectively.The installation method of main contacts 31 and resistance contact point 32 is identical with arcing contact 33, and just according to its different effect, the movement clearance of each contact is different.Elastic movement gap between main contacts 31 and the insulation guide plate 34 is less than the elastic movement gap between arcing contact 33 and the insulation guide plate 34; Elastic movement gap between resistance contact point 32 and the insulation guide plate 34 is greater than the elastic movement gap between arcing contact 33 and the insulation guide plate 34.Concrete numerical value can calculate as required.Do not do further argumentation at this.
Certainly, initiatively the quantity of contact 141, resistance moving contact 142 is not limited to three, also can be two or more.Perhaps change distance between each contact, as long as the distance relation between each contact is with above-mentioned consistent by the length of adjusting each contact on the moving contact.
In addition, molecular sieve 71 devices such as grade can also be set in insulating sleeve 7.In the present embodiment molecular sieve 71 is inlaid on the insulation guide plate 34.Certainly, also can adopt other mounting means, for example molecular sieve 71 can also be arranged in the insulating sleeve 7 as independent one deck.
When contact is initially at engagement state, main contacts 31 contact with contact 141 initiatively, and electric current is directly by active contact 141 and main contacts 31 conductings.When receiving breaking signal, operating mechanism drives moving contact and moves downward, and fixed contact overcomes spring under each contact frictional force effect of moving contact elastic force moves downward together.Meanwhile, spring 10 is compressed under the effect of each contact, and when the spring base lower end on each contact of fixed contact moved to positioning tube 101 places, the tube 101 that is positioned stopped, no longer move downward, and moving contact continues to move downward.
Because the free gap minimum of main contacts 31, what therefore at first disconnect is main contacts 31 and active contact 141.And this moment, resistance contact point 32, arcing contact 33 also engage with resistance moving contact 142, arc extinguishing moving contact 143 respectively, overwhelming majority electric currents are through arcing contact 33 and arc extinguishing moving contact 143, so main contacts 31 and initiatively can not produce electric arc 141 disjunctions of contact the time.
At this moment, moving contact continues to move downward, and separate with arc extinguishing moving contact 143 arcing contact 33, under the double action of brake separating mechanism power and spring force, arcing contact 33 and arc extinguishing moving contact 143 move round about with the relative velocity that doubles brake separating mechanism, and electric arc extinguishes rapidly.When cutting off big electric current, the heat energy that electric arc produces expands arc control device gas rapidly, promotes moving contact and quickens to move downward, and electric arc is extinguished more rapidly.Arc extinguishing efficient during for the little electric current of further raising, side at arc extinguishing moving contact 143 is provided with arc blow-out pipe 145, when arc extinguishing moving contact 143 produces Compressed Gas for 144 li at cylinder sleeve when the separating brake direction moves, these gases blow to arc extinguishing moving contact 143 tops by arc blow-out pipe 145, and electric arc is blown out.The effect that exhaust outlet 41 is set is can pass through exhaust outlet 41 air inlets when arc extinguishing moving contact 143 when the combined floodgate direction moves, avoids producing vacuum in cylinder sleeve 144 speed that influence is closed a floodgate.
Because the elastic movement gap maximum of resistance contact point 32, therefore resistance contact point 32 separates at last with resistance moving contact 142 in the separating brake process.33 separate the about 30 milliseconds of resistance contact points 32 in back and just separate with resistance moving contact 142 with arc extinguishing moving contact 143 in the arcing contact, make quenching resistance 352 guarantee effective turn-on time when separating brake, can prevent to produce gate-dividing super-voltage.Certainly, concrete parameter can be provided with according to actual needs, is not described further at this.For example, 3 resistance contact heads contact simultaneously during combined floodgate, reduce closing overvoltage; And be adjustable to during separating brake two separate in advance, the 30 milliseconds of separation that lag behind, when reducing gate-dividing super-voltage, can also reduce resistance capacity.
Because main contacts 31, resistance contact point 32 and arcing contact 33 all are to be connected on the insulation guide plate 34 by spring floating, therefore these three contacts all have the ability of doubly fast disjunction when separating, promptly moving contact and fixed contact move respectively in the opposite direction in separating process, speed of related movement is fast, and arc quenching effect is good.
During feed motion, drive unit A5 drives moving contact and moves upward, because resistance contact point 32 is the longest, that is to say that the distance between resistance contact point 32 and the resistance moving contact 142 is minimum, therefore, resistance contact point 32 is at first connected with resistance moving contact 142, with quenching resistance 352 places in circuit, resistance contact point 32 is connected about 10 milliseconds of back with resistance moving contact 142, and arcing contact 33 is connected with arc extinguishing moving contact 143, main circuit is connected, and the electric current in the main circuit is by arcing contact 33 and 143 conductings of arc extinguishing moving contact; Be only main contacts 31 and initiatively contact 141 connections at last.Because quenching resistance 352 inserted before main circuit was connected, and circuit is charged in advance, the steepness that line voltage waveform changes when making the main circuit conducting slows down, thereby avoids producing closing overvoltage.During combined floodgate; if close a floodgate on the electric network fault circuit; can produce bigger combined floodgate electric arc; but because arcing contact 33 is connected earlier; therefore most electric arc all is created on the arcing contact 33; main contacts 31 can not produce electric arc almost connecting with active contact 141 under the idiostatic situation, and protection main contacts 31 is not burnt out.
It more than is the operation principle of breaker B1, B2.
The moving contact of two breaker B1, B2 becomes the in-line arrangement relatively and is cascaded, and connecting plate 1422 is in transmission connection with the drive unit A5 that is arranged on intermediate supports insulation column A3 bottom by the connecting rod crank arm mechanism.Drive unit A5 is the Driven by Hydraulic Cylinder device, and its line shaft A52 is connected with connecting plate 1422 with crank arm mechanism by insulated tension pole A6.Two connecting plates 1422 link together by flexible conductor.The end of equalizing capacitance C1, C2 is electrically connected with the metal shell 351 of resistance box 35, and the other end is electrically connected with connecting plate 1422 by flexible conductor.
Drive unit A5 is a permanent-magnet locked hydraulic operating mechanism, comprise hydraulic cylinder A51, line shaft A52 by hydraulic cylinder A51 driving, described hydraulic cylinder A51 is the differential type hydraulic cylinder, the rod chamber oil duct junction of hydraulic cylinder A51 is communicated with main accumulator A53 by oil pipe, the rodless cavity oil duct junction of hydraulic cylinder A51 connects main accumulator A53 by main reversing valve A54, the passage both sides of main reversing valve A54 connect rodless cavity oil duct junction and the main accumulator A53 of hydraulic cylinder A51 respectively by pipeline, the both sides of another passage connect rodless cavity oil duct junction and the fuel tank A55 of hydraulic cylinder A51 respectively by pipeline, the oil-out of fuel tank A55 is communicated with main accumulator A53 by hydraulic pump A58 and unidirectional valve A59; Line shaft A52 is connected with blocking mechanism A56 by bearing pin.Also be connected with standby switching valve A510 on the oil circuit between the rod chamber oil duct junction of hydraulic cylinder A51 and the main accumulator A53, this standby switching valve A510 is a rotary reversing valve, the passage both sides of standby switching valve A510 connect rod chamber oil duct junction and the main accumulator A53 of hydraulic cylinder A51 respectively by pipeline, the both sides of another passage connect rod chamber oil duct junction and the standby accumulator A511 of hydraulic cylinder A51 respectively by pipeline, also have a passage to be serially connected between main accumulator A53 and the main reversing valve A54, have manual switch mechanism on the rotating shaft A5101 of standby switching valve A510.
The utility model adopts two accumulators that power source is provided, and during operate as normal, hydraulic pump A58 presses oil to main accumulator A53 and standby accumulator A511 respectively by unidirectional valve A59, A591, makes two accumulators all keep certain pressure.But this moment, the passage between the rod chamber oil duct junction of standby accumulator A511 and hydraulic cylinder A51 is closed by standby switching valve A510.Hydraulic oil can only be entered the rod chamber of hydraulic cylinder A51 by main accumulator A53 through the passage in the standby switching valve A510.Circuit breaker branch, combined floodgate rely on main accumulator A53 fuel feeding.
During breaker closing, handle main reversing valve A54, the rodless cavity oil duct junction of hydraulic cylinder A51 and the passage between the main accumulator A53 are opened, close the rodless cavity oil duct junction of hydraulic cylinder A51 and the passage between the fuel tank A55 simultaneously.Like this, the pressure of hydraulic cylinder A51 both sides is identical, but because piston both sides compression area does not wait, and rodless cavity one side compression area is big, thereby piston drives line shaft A52 and moves axially breaker closing to rod chamber one side shifting.
During breaker open operation, handle main reversing valve A54, make the rodless cavity oil duct junction of hydraulic cylinder A51 and the pathway closure between the main accumulator A53, open the rodless cavity oil duct junction of hydraulic cylinder A51 and the passage between the fuel tank A55 simultaneously.Like this, the rodless cavity of hydraulic cylinder A51 rushes down pressure by fuel tank A55, and rod chamber is still kept high pressure, thereby piston drives line shaft A52 and moves axially breaker open operation to rodless cavity one side shifting.
When main accumulator A53 oil supply system breaks down or during decompression, pressure controller A531 sends alarm signal, at this moment, branch, the closing function of main hydraulic system completely lose.When the staff confirms to be badly in need of separating brake, can handle manual switch mechanism standby switching valve A510 is switched to standby accumulator A511.At this moment, standby switching valve A510 cuts off two passages between hydraulic cylinder A51 and the main accumulator A53 simultaneously, connect the passage between hydraulic cylinder A51 rod chamber oil duct junction and the standby accumulator A511 simultaneously, because hydraulic cylinder A51 rodless cavity oil duct junction is decompression, piston drives line shaft A52 and moves to the separating brake direction fast, finishes the once purpose of emergent separating brake when realizing the main hydraulic system fault.
The structure of manual switch mechanism can be taked various ways, and for example, my another patent application " extra-high-voltage breaker permanent-magnet locked hydraulic operating mechanism CN200510112963.1 " once disclosed a kind of manual-operating mechanism of quick bistable state conversion.No longer repeat at this.
The effect of blocking mechanism A56 is to make line shaft A52 operation put afterwards, keep blocking in place before next operation.As shown in Figure 9, blocking mechanism A56 comprise round barrel shape mechanism shell A561, be installed in cylinder iron core A562, wound core A562 among the mechanism shell A561 and be arranged on permanent magnet A563 among the mechanism shell A561, permanent magnet A563 is fixedly mounted on the inwall of mechanism shell A561, the axis normal setting of its magnetic pole and iron core A562, the two ends of iron core A562 have latch actuation axle A564, latch actuation axle A564 passes the both sides end cap, and wherein the latch actuation axle A564 of an end is connected with line shaft A52 with lever A521 by bearing pin.
Iron core A562 has an end that is positioned at mechanism shell A561 under the magneticaction of permanent magnet A563, when moving, iron core A562 must overcome the magnetic force of permanent magnet A563, in case and iron core A562 moves to the centre position of permanent magnet A563 and crosses after the mid point, magnetic force will promote iron core A562 and move to opposite side, up to being adsorbed on the end cap.After breaker operator is finished, even the pressure among the hydraulic cylinder A51 changes, as long as this deficient change just can guarantee the locking of circuit breaker with the magnetic force that overcomes permanent magnet A563.On the other hand, in the operating process of circuit breaker, drive iron core A562 moves and crosses after the magnetic balanced point when line shaft A52 moves, and the magneticaction of permanent magnet A563 can be accelerated the speed that line shaft A52 moves, and helps to improve the firm sum velocity of firm branch.
The effect of main reversing valve A54 is conversion realization branch, the closing operation by oil circuit, can select rotary reversing valve for use, also can select the slip reversal valve for use.
The structure and the operation principle thereof that more than are drive unit A5 are described.
A side that is positioned at the intermediate insulation pillar at breaker B1, B2 is equipped with luminous energy electronic current transducer CT1, CT2.As Fig. 7, shown in Figure 8, described luminous energy electronic current transducer CT1, CT2 comprises that being installed in the instrument transformer high-pressure side promptly is sleeved on iron core and induction coil on the connecting plate 1422, analog-digital converter T2, optical modulator T3, induction coil is connected to the signal input part of analog-digital converter T2, the signal output part of analog-digital converter T2 is connected to the signal input part of optical modulator T3, the signal output part of optical modulator T3 is connected to the signal input part of optical demodulator T4 by optical cable T7, the signal output part of optical demodulator T4 is connected to signal reader T41, and optical demodulator T4 and signal reader T41 are installed on the base A31 of intermediate supports insulation column A3.Signal reader T41 can be connected to system controlled by computer and metering system, constitutes the signals collecting end, and the control of power supply power, protection and metering are used.
Above-mentioned induction coil comprises guard signal induction coil T11 and metering signal induction coil T12; also has power supply coupling coil T13; power supply coupling coil T13 is connected to voltage-stabilized power supply circuit T5; the input of voltage-stabilized power supply circuit T5 also is connected with solar panel T6, and the output of voltage-stabilized power supply circuit T5 is connected with the power end of optical modulator T3 with analog-digital converter T2.
The operation principle of luminous energy electronic current transducer CT1, CT2 is as follows: the high pressure primary current produces alternating magnetic field through primary winding, and alternating magnetic field passes the secondary coil of current transformer, produces electromotive force in secondary coil.This electromotive force is added in and just produces induced current on the sample resistance, and sample resistance adopts thermo-compensator, and its resistance is not subjected to the influence of variation of ambient temperature.According to the principle of transformer, this induced current is directly proportional with primary current in useful load.Just can calculate the size of actual primary current by the size of sample resistance both end voltage.Induced voltage signal is input to and is delivered to optical demodulator T4 to control protection and metering system by optical modulator T3 and fiber optic cables after analog-digital converter T2 converts digital signal to.Pass through the storage battery accumulation of energy again after the power supply process voltage-stabilized power supply circuit T5 voltage stabilizing that the working power of analog-digital converter T2 and optical modulator T3 adopts power supply coupling coil T13 and solar panel T6 to export, at last stable, the continuous working power of output.
Because high-pressure side reads end with signal and separates fully, the centre has only the good optical cable of insulation property to connect, and has thoroughly solved the Insulation Problems that the extra-high voltage electric power current transformer exists.Eliminated the ultra high voltage current transformer accident potential of blast easily.
The structure and the operation principle that more than are luminous energy electronic current transducer CT1, CT2 are described.
Certainly, luminous energy electronic current transducer CT1, CT2 are a slave part of the present utility model.The utility model is not limited to use the current transformer of this structure, and the current transformer of other various structures also can use.As use independent other forms of instrument transformer or do not use instrument transformer.
Claims (6)
1, double-fracture combination column type superhigh voltage multiplier breaking circuit breaker, comprise insulation column and the break-up device that is installed in the insulation column top, be parallel with equalizing capacitance on the break-up device, it is characterized in that: described break-up device comprises two breakers (B1, B2) of series connection, breaker (B1, B2) is gone up each one group of equalizing capacitance in parallel (C1, C2), and insulation column comprises the side insulation column that is supported on respectively on the breaker (B1, B2) and is supported on the intermediate insulation pillar of two breaker common ports; The side insulation column comprises the three side supports insulative pillars (A1) that are triangularly arranged, and the intermediate insulation pillar comprises insulated tension pole pillar (A2) and the intermediate supports insulation column (A3) that be arranged in parallel.
2, double-fracture combination column type superhigh voltage multiplier breaking circuit breaker according to claim 1 is characterized in that: described breaker (B1, B2) comprises insulation crust (1), be installed in the insulating sleeve (7) in the insulation crust (1) and be arranged on fixed contact and moving contact in the insulating sleeve (7); Be positioned at the fixedly connected resistance box of a side (35) of fixed contact at insulation crust (1);
Fixed contact comprises the insulation guide plate (34) that is fixedly installed in the insulating sleeve (7) and is inserted into main contacts (31) in insulation guide plate (34), resistance contact point (32) and arcing contact (33), be fixedly installed on the end casing (50) of insulating sleeve (7) end face, main contacts (31), resistance contact point (32) is connected with insulation guide plate (34) elasticity by spring respectively with arcing contact (33), main contacts (31) is electrically connected by flexible conductor with arcing contact (33), and the end of main contacts (31) is electrically connected with connecting rod (37) in fixedly being inserted into end casing (50); Elastic movement gap between main contacts (31) and the insulation guide plate (34) is less than the elastic movement gap between arcing contact (33) and the insulation guide plate (34); Elastic movement gap between resistance contact point (32) and the insulation guide plate (34) is greater than the elastic movement gap between arcing contact (33) and the insulation guide plate (34); The end of resistance contact point (32) is electrically connected with resistance binding post (51) in fixedly being inserted into end casing (50) by flexible conductor;
Moving contact comprises interior insulation support plate (72), the external insulation supporting bracket (73) that is fixedly installed in the insulating sleeve (7) and is inserted into arc extinguishing moving contact (143) in the two-layer insulation support plate, be installed with conductive plate (1421) on the arc extinguishing moving contact (143), conductive plate (1421) is positioned between insulation support plate (72) and the external insulation supporting bracket (73); Initiatively contact (141) and resistance moving contact (142) are fixed together by this conductive plate (1421) and arc extinguishing moving contact (143), active contact (141), resistance moving contact (142), arc extinguishing moving contact (143) is inserted on the interior insulation support plate (72), its position respectively with main contacts (31), resistance contact point (32), arcing contact (33) is corresponding, interior insulation support plate (72) is gone up and resistance moving contact (142), the corresponding position of arc extinguishing moving contact (143) is provided with cylinder sleeve (144), resistance moving contact (142), the stage casing of arc extinguishing moving contact (143) has piston, and form piston with the inwall of cylinder sleeve (144) and cooperate, the end of arc extinguishing moving contact (143) has connecting plate (1422);
Resistance box (35) comprises housing (351) and is fixedly mounted on quenching resistance (352), connecting rod extension rod (371) in the housing (351), the two ends of housing (351) fixedly mount resistance box end cap (353,354) respectively, the two ends of quenching resistance (352) and connecting rod extension rod (371) all are inserted in the resistance box end cap (353,354), stretch out the plug that is partly with of resistance box end cap (353,354), one end plug matches with resistance binding post (51) and connecting rod (37) on the fixed contact, and other end plug is plugged on metal end caps (355);
The moving contact of two breakers (B1, B2) becomes the in-line arrangement relatively and is cascaded, connecting plate (1422) is in transmission connection by connecting rod crank arm mechanism and the drive unit (A5) that is arranged on intermediate supports insulation column (A3) bottom, and the connecting plate (1422) of two breakers (B1, B2) is electrically connected by flexible conductor.
3, double-fracture combination column type superhigh voltage multiplier breaking circuit breaker according to claim 2, it is characterized in that: described insulating sleeve (7) comprises urceolus and is sleeved on inner core in the urceolus, inner core is a segmental structure, and insulation guide plate (34), interior insulation support plate (72) and external insulation supporting bracket (73) are installed in the junction of each segmentation of inner core;
Under gate-dividing state, main contacts (31) the and initiatively distance between contact (141) is maximum, the distance between arcing contact (33) and the arc extinguishing moving contact (143) secondly, between resistance contact point (32) and the resistance moving contact (142) apart from minimum;
Arcing contact (33) be positioned at the insulation guide plate (34) the center, a plurality of main contactss (31) and resistance contact point (32) be looped around arcing contact (33) around;
One side of arc extinguishing moving contact (143) and resistance moving contact (142) is provided with arc blow-out pipe (145), the top of arc blow-out pipe (145) is respectively towards the top of arc extinguishing moving contact (143) and resistance moving contact (142), and the piston on arc extinguishing moving contact (143) or the resistance moving contact (142) is run through in its lower end; Have the exhaust outlet (41) that unidirectional valve is installed on the piston.
4, according to claim 1 or 2 or 3 described double-fracture combination column type superhigh voltage multiplier breaking circuit breakers, it is characterized in that: drive unit (A5) is the Driven by Hydraulic Cylinder device, and its line shaft (A52) is connected with connecting plate (1422) with crank arm mechanism by insulated tension pole (A6).
5, according to claim 1 or 2 or 3 described double-fracture combination column type superhigh voltage multiplier breaking circuit breakers, it is characterized in that: at breaker (B1, B2) side that is positioned at the intermediate insulation pillar is equipped with luminous energy electronic current transducer (CT1, CT2), described luminous energy electronic current transducer (CT1, CT2) comprise the induction coil (T11 that is wrapped on the annular core, T12) and optical cable (T7), annular core and induction coil (T11, T12) be sleeved on the connecting plate (1422), optical cable (T7) is wrapped on the intermediate supports insulation column (A3), induction coil (T11, T12) be connected to the signal input part of analog-digital converter (T2), the signal output part of analog-digital converter (T2) is connected to the signal input part of optical modulator (T3), the signal output part of optical modulator (T3) is connected to the signal input part of optical demodulator (T4) by optical cable (T7), the signal output part of optical demodulator (T4) is connected to signal reader (T41), and optical demodulator (T4) and signal reader (T41) are installed on the base (A31) of intermediate supports insulation column (A3).
6, according to claim 2 or 3 described double-fracture combination column type superhigh voltage multiplier breaking circuit breakers, it is characterized in that: drive unit (A5) is a permanent-magnet locked hydraulic operating mechanism, comprise differential type hydraulic cylinder (A51), line shaft (A52) by hydraulic cylinder (A51) driving, the rod chamber oil duct junction of hydraulic cylinder (A51) is communicated with main accumulator (A53) by oil pipe, the rodless cavity oil duct junction of hydraulic cylinder (A51) connects main accumulator (A53) by main reversing valve (A54), passage both sides of main reversing valve (A54) connect the rodless cavity oil duct junction and the main accumulator (A53) of hydraulic cylinder (A51) respectively by pipeline, the both sides of another passage connect the rodless cavity oil duct junction and the fuel tank (A55) of hydraulic cylinder (A51) respectively by pipeline, the oil-out of fuel tank (A55) is communicated with main accumulator (A53) by hydraulic pump (A58) and unidirectional valve (A59); Line shaft (A52) is connected with blocking mechanism (A56) by bearing pin;
Described blocking mechanism (A56) comprises mechanism shell (A561), be installed in the iron core (A562) in the mechanism shell (A561), wound core (A562) is arranged on the permanent magnet (A563) in the mechanism shell (A561), permanent magnet (A563) is fixedly mounted on the inwall of mechanism shell (A561), the axis normal setting of its magnetic pole and iron core (A562), the two ends of iron core (A562) have latch actuation axle (A564), latch actuation axle (A564) passes the both sides end cap, and wherein the latch actuation axle (A564) of an end is connected with line shaft (A52) with lever (A521) by bearing pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620086099 CN2909495Y (en) | 2006-06-26 | 2006-06-26 | Double-break combined column superhigh voltage multi-speed breaking circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620086099 CN2909495Y (en) | 2006-06-26 | 2006-06-26 | Double-break combined column superhigh voltage multi-speed breaking circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2909495Y true CN2909495Y (en) | 2007-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620086099 Expired - Lifetime CN2909495Y (en) | 2006-06-26 | 2006-06-26 | Double-break combined column superhigh voltage multi-speed breaking circuit breaker |
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| Country | Link |
|---|---|
| CN (1) | CN2909495Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100454461C (en) * | 2006-06-26 | 2009-01-21 | 王光顺 | Double-fracture combination column type superhigh voltage multiplier breaking circuit breaker |
| CN104347323A (en) * | 2013-07-23 | 2015-02-11 | 株式会社东芝 | Gas circuit breaker |
-
2006
- 2006-06-26 CN CN 200620086099 patent/CN2909495Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100454461C (en) * | 2006-06-26 | 2009-01-21 | 王光顺 | Double-fracture combination column type superhigh voltage multiplier breaking circuit breaker |
| CN104347323A (en) * | 2013-07-23 | 2015-02-11 | 株式会社东芝 | Gas circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090121 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |