CN104241027A - Modular vacuum magnetic starter - Google Patents
Modular vacuum magnetic starter Download PDFInfo
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- CN104241027A CN104241027A CN201410380397.1A CN201410380397A CN104241027A CN 104241027 A CN104241027 A CN 104241027A CN 201410380397 A CN201410380397 A CN 201410380397A CN 104241027 A CN104241027 A CN 104241027A
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Abstract
The invention discloses a modular vacuum magnetic starter. The modular vacuum magnetic starter is provided with a starter body, wherein the starter body comprises a contactor 1 and a controller 2, the contactor 1 is provided with a contactor shell 3, three containing cavities are arranged in the contactor shell 3 in sequence from top to bottom, an electromagnetic device 4, a vacuum pipe 6 connected with the electromagnetic device 4 through a connecting mechanism 5 and a current transformer 7 connected with the vacuum pipe 6 are arranged in each containing cavity, the controller 2 is provided with a controller box 8 which is matched with the contactor shell 3, an electric wire is connected between the controller box 8 and the contactor shell 3, and the controller box 8 and the contact shell 3 are locked together through a locking mechanism. The modular vacuum magnetic starter has the advantages that the size is small, maintenance is convenient, a control system is arranged, and mechanical and electronic integration is achieved.
Description
Technical field
The invention relates to magnetic starter technical field, is specifically related to a kind of modular vacuum magnetic starter.
Background technology
As everyone knows, the contactor in magnetic starter is at voltage 3300V, and 1140V, 660V, 380V grade, purposes is more extensive.Existing magnetic starter has contactor body stand alone type; auxiliary relay; intrinsic safety plug-in unit; the associated components compositions such as magnetic protector; and the contactor in traditional magnetic starter is generally electromagnetism sheet iron strip three-phase (individual) vacuum tube; although modular contactor is three electricity keep electromagnet (hereinafter referred to as electromagnet); be with three vacuum tubes respectively; but the electromagnet of current existing modular contactor generally has three reaction springs; when not having electricity, its pulling force enough separately vacuum tube and main circuit disconnects.Common electromagnet counter-force spring is all in the outside of electromagnet.One, the interval object insulated of electromagnet and vacuum tube, the release of electromagnet and adhesive, drive the opening and closing of vacuum tube.If reaction spring is in the outside of electromagnet, due to module housing close grand after, when locking vacuum tube and electromagnet, fine setting contactor opens distance and the excess of stroke, is easy to that electromagnet is rubbed mutually with the conductive tissue of vacuum tube and touches, and causes that the ferromagnetic cylinder of electromagnetism is charged jeopardizes personal safety.Therefore to have volume large for existing magnetic starter, and circuit is many and numerous and diverse, and fault point is difficult to investigation more, and maintenance is inconvenient, changes components and parts loaded down with trivial details and the defect such as cannot to ensure personal safety.
Summary of the invention
For solving prior art existing problems and defect, the invention provides a kind of modular vacuum magnetic starter, adopts modular contactor i.e. three electromagnet apparatus to drive combined floodgate and the separating brake of three vacuum tubes, and effective connection of modular controller makes starter integral module, there is volume little, easy to maintenance, combine again the control system carried, make split in prior art, volume is large, circuit is many, and the situation of Measuring error inconvenience is improved, and realizes electromechanical integration function.
The technical scheme that the invention adopts is:
A kind of modular vacuum magnetic starter, there is starter body, comprise contactor 1 and controller 2, described contactor 1 has contactor housing 3, three containing cavities are provided with from top to bottom successively in contactor housing 3, calutron 4, the vacuum tube 6 be connected by bindiny mechanism 5 with calutron 4 and the current transformer 7 be connected with vacuum tube 6 is equipped with in each containing cavity, described controller 2 has the controller box 8 matched with contactor housing 3, be connected with electric wire between controller box 8 and contactor housing 3, and locked mutually by retaining mechanism.
Described modular vacuum magnetic starter, reactor 81 is provided with in described controller box 8, power panel 89, guide and coil control board 82, on off state detection and detection of electrical leakage plate 84, analog quantity detection, communication and master control borad 87, and be connected with the static terminal seat 9 be positioned at above controller box respectively, static terminal seat 9 is provided with the spring needle moved end stroma 10 be mated; Described power panel 89, reactor 81, guide and coil control board 82, analog quantity detection, communication and master control borad 87 are fixed in controller box 8 by binding post, and on off state detects and detection of electrical leakage plate 84 is arranged on controller box 8 inwall.
Described modular vacuum magnetic starter, there is in described vacuum tube 6 two moving contacts be oppositely arranged 12 and fixed contact 11, the bar portion of fixed contact 11 extends vacuum tube 6 outer end and extends the input 14 of housing sidewall I 13 as vacuum tube through after current transformer 7, another outer end that vacuum tube 6 is extended in the bar portion of moving contact 12 is connected with calutron 4 by bindiny mechanism 5, the bar portion of stretching out the moving contact 12 of another outer end of vacuum tube 6 is connected with conducting block 15, conducting block 15 is connected with the output 16 of vacuum tube 6 by conductive strips, output 16 extends housing sidewall I 13, input 14 and output 16 are conductive columns, be crisscross arranged in the outside of housing sidewall I 13.
Described modular vacuum magnetic starter, calutron 4 has cylindrical body 17, coil 18 is provided with in cylindrical body 17, position corresponding with coil 18 on cylindrical body 17 is provided with line outlet I, be provided with dynamic iron core 21 in coil 18, dynamic iron core 21 has axial cavity and through hole, and bindiny mechanism 5 has the flange 19 extended in cylindrical body 17, be placed in follower spring 22 one end in cavity and flange 19 is conflicted, the other end and dynamic iron core 21 are conflicted; To be placed in cavity and tripping spring 23 one end be enclosed within outside follower spring 22 and cylindrical body 17 are conflicted, the other end and dynamic iron core 21 are conflicted; One end that two ends have the not threaded power transmission screw 24 of tool in the middle of screw thread is threaded through dynamic iron core 21, follower spring 22 and flange 19 successively, and the outside that the other end is arranged in dynamic iron core 21 is outer and penetrate controller box 8 by the fastening contactor housing 3 that extends to of nut 25.
Described modular vacuum magnetic starter, described controller box 8 is provided with incoming line 26 with the contact site of contactor housing 3, terminal block 28 is provided with outside housing sidewall III 32, position corresponding with current transformer 7 in housing sidewall III 32 is provided with line outlet II 29, the position corresponding with conductive strips is provided with line outlet III 30, the position corresponding with line outlet I is provided with line outlet IV 31, the electric wire of described current transformer is drawn from line outlet II 29, to be detected with on off state by terminal block 28 and detection of electrical leakage plate 84 is connected, the electric wire of drawing from conductive strips is drawn by line outlet III 30, be connected with reactor 81 by terminal block 28, the electric wire of coil 18 is drawn through terminal block 28 from line outlet I and IV 31 and is connected with guide and coil control board 82.
Described modular vacuum magnetic starter, also comprise module rack 38, Switch main body is placed in module rack 38, described module rack 38 has collet 39, starter body is placed on collet 39, the left and right edges of collet 39 is provided with slideway 40, and middle part is provided with two groups of Bearning mechanisms 41, the axle of Bearning mechanism 41 is respectively equipped with guide spring sheet 42.
Described modular vacuum magnetic starter, the top of described module rack 38 is provided with load push-pull 44, load push-pull 44 comprises fixed head 45, the both sides of fixed head 45 are fixed on the top of module rack 38 by bolt IV 46, another both sides have downward prolongation wall I 47 and II 48, extend on wall I 47 and there are three through holes I, II and III, prolongation wall II 48 has and extends three through holes I ' that on wall I 47, through hole is corresponding, II ' and III ' is positioned at the push-pull mechanism below fixed head 45, push-pull mechanism has base plate 49, the both sides of base plate 49 are provided with wing plate 50, wing plate 50 is interacted by stopping means and Switch main body, base plate 49 is installed with movable block 51, movable block 51 has three through holes I corresponding with the through hole extended on wall I 47 and II 48 ", II " and III ", main shaft 52 inserts three through holes being positioned at middle a group, two axis of guides 53 insert two groups of three through holes being positioned at both sides respectively, described main shaft 52 has trapezoidal thread.
Described modular vacuum magnetic starter, described stopping means has the handle 34 of band fulcrum, handle rotation axle 37 is through the fulcrum place of handle 34, handle 34 is fixed in the edge of controller box 8 sidewall near contactor housing 3, the end of handle 34 sets firmly the handle axis of guide 33, and wing plate 50 is between the handle axis of guide 33 and handle rotation axle 37.
Described modular vacuum magnetic starter, also comprise the spring needle moved end stroma 10 coordinated with described spring needle static terminal seat 9, described spring needle moved end stroma 10 is positioned at above controller box 8, the outside of spring needle moved end stroma 10 is provided with fixed mount 54, the both sides of fixed mount 54 are provided with gathering sill 55, the side wall upper part of module rack 38 is provided with the slideway matched with gathering sill 55, and fixed mount 54 is connected with elevating mechanism.
Described modular vacuum magnetic starter, described retaining mechanism comprises on controller box 8 sidewall I and II and extends several binding 35 respectively to the direction of contactor housing 3, and binding 35 is connected with contactor housing 3 by bolt II 36.
A kind of modular vacuum magnetic starter of the invention compared with prior art has following beneficial effect:
1, a kind of modular vacuum magnetic starter of the invention, by the architecture advances to calutron and vacuum tube, be arranged to directly drive the combined floodgate of three vacuum tubes and the version of gate separating type respectively with three calutrons, after making contact modules, volume reduces, circuit reduces, little by contactor being had volume after controller is in conjunction with comprising modules formula magnetic starter after the modularization of controller, safeguard and easy to maintenance, module time can not (contactor in the past goes wrong and wants discriminatory analysis to be the problem of contactor or the problem of controller more than three minutes in replacing, perhaps be other relaying, power supply etc. problem.Used time is just quite long), in conjunction with the control system carried, the situation of contactor and controller split is in the past improved, realizes electromechanical integration function.Contact modules, conforms to concerned countries standard completely, because controller and contactor are combined in one piece, is able to very large improvement in volume and weight.Such as same 630A contactor assembly is that the half of original contactless contactor volume and weight also wanted point.Because three-phase uses three magnet control respectively, alternate difference 120 degree, can make disjunction at zero point (sinusoidal wave zero point), the contact arcing damage of protection vacuum tube and adhesion phenomenon.
After magnetic starter modularization, reach 25KV according to the standard of GB/T14808 is withstand voltage, solve contactor in the past and coordinate the difficult problem not reaching withstand voltage 25KV with electronic controller.Electric current is electric power system within 630A, and voltage can adopt the modular vacuum magnetic starter of the invention from 380V to 3300V.
After magnetic starter modularization, the constrained input end of vacuum tube is arranged in side and is staggered, can with magnetic starter module outside framework and module rack form push-pull mechanism (drawer type), make magnetic starter conveniently be separated with main circuit and close grand, realize quick-replaceable object.
2, three-phase vacuum tube and calutron, often organizing is all form respectively.With the disjunction at zero point of Electronic Control three high-speed double electromagnet vacuum tube big current.Solve vacuum tube when main circuit phase fault, big current disjunction produces the phenomenon that electric arc makes the dynamic/static contact melting welding of vacuum tube.Modular vacuum magnetic starter of the present invention adopts direct current adhesive and maintenance, the operating voltage range of electromagnet is increased greatly, the adhesive of about 300V direct current, is low to moderate 15V voltage and also can maintains.
3, after magnetic starter modularization, mix module rack, with the fixed mount on the stroma of elevating mechanism control spring pin moved end along the upper and lower vertical sliding motion of the slideway in module rack, just neatly the spring needle static terminal seat in controller and spring needle moved end stroma can be carried out Engage and disengage, reach and control circuit opening and closing object.Operator is made not have live line work, safety first, and it is simply easy to maintenance, volume is little, powerful, modular vacuum magnetic starter is connected with not having wire between module rack, the power supply of controller and relevant data acquisition, mechanical enabling blocking mechanism can be utilized with aviation pin, realize with the conduction of module and shelf with separate.During enabling aviation pin automatically and module depart from, automatically connect the control device of module at closing time.
4, may be used for explosion-proof occasion, be beneficial to and do flameproof enclosure, modular contactor and controller are disjunctors, contact without line with between module rack, plug push-and-pull between complete independently and main circuit, adopt mechanical latching with explosion-proof shell, enabling front module 6 main contacts are all separated from backbone, not live line work.To person safety.
5, contactor and controller are integrated in a module by the invention, have volume little, feature easy for installation, save peripheral cell and distribution simultaneously, as the volume greatly can saving complete machine when combinationally using, are convenient to transport and install and use.Each module can realize exchanging, easy to maintenance.Adopt intelligentized color liquid crystal large-size screen monitors to show, user friendly operation simultaneously.
Accompanying drawing explanation
Fig. 1 is the external structure schematic diagram of a kind of modular vacuum magnetic starter of the invention.
Fig. 2 is contactor internal structure schematic diagram in the invention.
Fig. 3 is the cutaway view that shown in Fig. 2, single group vacuum tube is connected by bindiny mechanism with calutron.
Fig. 4 is the schematic diagram of the lateral wall of housing one shown in Fig. 2.
Fig. 5 is the casing schematic diagram of the invention middle controller.
Fig. 6 is spring needle static terminal seat schematic diagram in the invention.
Fig. 7 is spring needle moved end stroma schematic diagram in the invention.
Fig. 8 is the structural representation after the assembling of the invention modular vacuum magnetic starter and module rack.
Fig. 9 is the structural representation of the module rack shown in Fig. 8.
Figure 10 is the structural representation of collet in module rack shown in Fig. 8.
Figure 11 is the structural representation of load push-pull in module rack shown in Fig. 8.
The internal structure schematic diagram that Figure 12 is load push-pull shown in Figure 11.
Figure 13 is the combination schematic diagram of base and movable block in load push-pull shown in Figure 11.
Figure 14 is Fig. 1 middle controller box inner structure schematic diagram.
Figure 15 is the end view of Figure 14.
Figure 16 is the circuit block diagram of modular vacuum magnetic starter of the present invention.
Figure 17 be in Figure 16 analog quantity detect, the circuit theory diagrams of communication and master control borad.
Figure 18 is the circuit theory diagrams of power panel in Figure 16.
Figure 19 is the circuit theory diagrams of guide and coil control board in Figure 16.
Figure 20 is the circuit theory diagrams of Figure 16 breaker in middle state and electric leakage state-detection plate.
Wherein, contactor 1, controller 2, contactor housing 3, calutron 4, bindiny mechanism 5, vacuum tube 6, current transformer 7, controller box 8, spring needle static terminal seat 9, spring needle moved end stroma 10, fixed contact 11, moving contact 12, housing sidewall I 13, input 14, conducting block 15, output 16, cylindrical body 17, coil 18, flange 19, dynamic iron core 21, follower spring 22, tripping spring 23, power transmission screw 24, nut 25, incoming line 26, housing sidewall II 27, terminal block 28, line outlet II 29, line outlet III 30, line outlet IV 31, housing sidewall III 32, bolt I 33, handle 34, connecting plate 35, bolt II 36, rotating shaft screw bolt 37, module rack 38, collet 39, slideway 40, Bearning mechanism 41, clamping leaf spring 42, bolt III 43, load push-pull 44, limiting plate 45, bolt IV 46, extend wall I 47, extend wall II 48, base plate 49, wing plate 50, movable block 51, main shaft 52, the axis of guide 53, fixed mount 54, gathering sill 55, 56-jump ring, reactor 81, guide and coil control board 82, on off state detects and detection of electrical leakage plate 84, analog quantity detects, communication and master control borad 87, power panel 89.
Embodiment
As shown in Figure 1, a kind of modular vacuum magnetic starter, has starter body, comprises contactor 1 and controller 2.Described contactor 1 has contactor housing 3 as shown in Figure 2, be provided with three containing cavities from top to bottom successively in contactor housing 3, in each containing cavity, be equipped with calutron 4, the vacuum tube 6 be connected by bindiny mechanism 5 with calutron 4 and the current transformer 7 be connected with vacuum tube 6.As described in figures 1 and 5, controller 2 has the controller box 8 matched with contactor housing 3, electric wire is connected with between controller box 8 and contactor housing 3, and locked mutually by retaining mechanism, as shown in Figure 1, retaining mechanism is comprised and controller box 8 sidewall I and II extends 4 bindings, 35,4 bindings 35 respectively to the direction of contactor housing 3 is connected with contactor housing 3 by bolt II 36.
Reactor 81 is provided with in controller box 8, power panel 89, guide and coil control board 82, on off state detection and detection of electrical leakage plate 84, analog quantity detection, communication and master control borad 87, and be connected with the static terminal seat 9 be positioned at above controller box 8 respectively, static terminal seat 9 is provided with the spring needle moved end stroma 10 be mated;
As Figure 2-3, there is in vacuum tube 6 in modular vacuum magnetic starter two moving contacts be oppositely arranged 12 and fixed contact 11, the bar portion of fixed contact 11 extends vacuum tube 6 outer end and extends the input 14 of housing sidewall I 13 as vacuum tube through after current transformer 7, another outer end that vacuum tube 6 is extended in the bar portion of moving contact 12 is connected with calutron 4 by bindiny mechanism 5, the bar portion of stretching out the moving contact 12 of another outer end of vacuum tube 6 is connected with conducting block 15, conducting block 15 is connected with the output 16 of vacuum tube 6 by conductive strips, output 16 extends housing sidewall I 13, input 14 and output 16 are conductive columns, be crisscross arranged in the outside of housing sidewall I 13.
As shown in Figure 3, the calutron 4 in modular vacuum magnetic starter has cylindrical body 17, is provided with coil 18 in cylindrical body 17, is provided with jump ring 56 in the middle of one end of coil 18 and cylindrical body 17, and slippage is out from cylindrical body to prevent coil 18.Position corresponding with coil 18 on cylindrical body 17 is provided with line outlet I, dynamic iron core 21 is provided with in coil 18, dynamic iron core 21 has axial cavity and through hole, bindiny mechanism 5 has the flange 19 extended in cylindrical body 17, be placed in follower spring 22 one end in cavity and flange 19 is conflicted, the other end and dynamic iron core 21 are conflicted; To be placed in cavity and tripping spring 23 one end be enclosed within outside follower spring 22 and cylindrical body 17 are conflicted, the other end and dynamic iron core 21 are conflicted; One end that two ends have the not threaded power transmission screw 24 of tool in the middle of screw thread is threaded with flange 19 through dynamic iron core 21, follower spring 22 successively, and the outside that the other end is arranged in dynamic iron core 21 extends to contactor housing 3 and penetrate controller box 8 outward by nut 25 is fastening.
Controller box 8 is provided with incoming line 26 with the contact site of contactor housing 3, terminal block 28 is provided with as shown in Figure 4 outside housing sidewall III 32, position corresponding with current transformer 7 in housing sidewall III 32 is provided with line outlet II 29, the position corresponding with conductive strips is provided with line outlet III 30, the position corresponding with line outlet I is provided with line outlet IV 31, the electric wire of described current transformer is drawn from line outlet II 29, to be detected with on off state by terminal block 28 and detection of electrical leakage plate 84 is connected, the three-phase high-voltage of drawing from conductive strips is drawn by line outlet III 30 via electric wire, be connected with reactor 81 by terminal block 28, the electric wire of coil 18 is drawn through terminal block 28 from line outlet I and IV 31 and is connected with guide and coil control board 82.
Preferably, modular vacuum magnetic starter also comprises module rack 38 as seen in figs. 8-10, starter body is placed in module rack 38, described module rack 38 has collet 39, starter body is placed on collet 39, the left and right edges of collet 39 is provided with slideway 40, and middle part is provided with two groups of Bearning mechanisms 41, the axle of Bearning mechanism 41 is respectively equipped with guide spring sheet 42.Starter body is by the effect of Bearning mechanism 41 with guide spring sheet 42, can pass in and out rapidly in module rack 38, in order to prevent machine in transportation because tilt and vibration or other reason make starter body shift out in module rack 38, therefore, in transportation, baffle plate can be provided with above module rack 38 is imported and exported.
As Fig. 8, 9, 11, 12, the top of module rack 38 shown in 13 is provided with the load push-pull 44 for starter body mobile in module rack 38, load push-pull 44 comprises fixed head 45 as Figure 8-9, the both sides of fixed head 45 are fixed on the top of module rack 38 by bolt IV 46, another both sides have downward prolongation wall I 47 and II 48 as shown in figure 12, extend on wall I 47 and there are three through holes I, II and III, prolongation wall II 48 has and extends three through holes I ' that on wall I 47, through hole is corresponding, II ' and III ' is positioned at the push-pull mechanism below fixed head 45, push-pull mechanism has base plate 49 as shown in figure 13, the both sides of base plate 49 are provided with wing plate 50, wing plate 50 is interacted by stopping means and Switch main body, stopping means has the handle 34 of band fulcrum as shown in Figure 1, handle rotation axle 37 is through the fulcrum place of handle 34, handle 34 is fixed in the edge of controller box 8 sidewall near contactor housing 3, the end of handle 34 sets firmly the handle axis of guide 33, wing plate 50 is between the handle axis of guide 33 and handle rotation axle 37.As shown in figure 13 base plate 49 is installed with movable block 51, movable block 51 has three through holes corresponding with the through hole extended on wall I 47 and II 48 I ", II " and III "; main shaft 52 inserts three through holes being positioned at middle a group as shown in figure 12; two axis of guides 53 insert two groups of three through holes being positioned at both sides respectively, and described main shaft 52 has trapezoidal thread.By starter body by the inside shift-in in the gateway of module rack 38, when wing plate 50 contacts with handle rotation axle 37, by handle 34 with handle rotation axle 37 for fulcrum presses to terminal, the handle axis of guide 33 now on handle 34 moves, wing plate 50 is between the handle axis of guide 33 and handle rotation axle 37, act on main shaft by crank, make starter body in immigration module rack 38 by load push-pull 44 and keep fixing.When shifting out, by crank effect and main shaft, starter body is moved a certain distance by load push-pull 44 to the gateway of module rack 38 after, on lift handle 34, the handle axis of guide 33 moves down, and departs from wing plate 50, is being pulled out by starter body by handle 34 from module rack 38.
Modular vacuum magnetic starter also comprises the spring needle moved end stroma 10 coordinated with described spring needle static terminal seat 9 as Figure 8-9, described spring needle moved end stroma 10 is positioned at above controller box 8, the outside of spring needle moved end stroma 10 is provided with fixed mount 54, the both sides of fixed mount 54 are provided with gathering sill 55, the side wall upper part of module rack 38 is provided with the slideway matched with gathering sill 55, and fixed mount 54 is connected with elevating mechanism.Neatly the static terminal seat 9 of controller 2 is carried out Engage and disengage with spring needle moved end stroma 10 by elevating mechanism, reach and main circuit opening and closing object, make operator's not live line work, ensure the personal safety of operation.
As shown in figs. 14-15, described power panel 89, reactor 81, guide and coil control board 82, analog quantity detection, communication and master control borad 87 are fixed in controller box 8 by binding post, and on off state detects and detection of electrical leakage plate 84 is arranged on controller box 8 inwall; As shown in figure 16, on off state detects and detection of electrical leakage plate 84, first guide plate and coil control board 82 detect with analog quantity respectively and master control borad 87 is connected for its entire block diagram.
As shown in figure 17, described analog quantity detection, communication and master control borad 87 are one piece of circuit board, for detect electric current voltage resistance temperature the analog electric signal such as electric degree, and the signal of each circuit board of processing controls, sends to display by result; Be made up of main control part, test section and communication part;
Be specially: main control part comprises master chip, communication module and power module and peripheral circuit, the model of master chip is STM32F407VCT6.Master control borad operating voltage is provided by power module, for DC12V, during master control borad work, first by power-switching circuit, DC12V being converted to DC5V and DC3.3V is master chip and other chip power supply, and communication module comprises interface chip MAX485,2 photoelectrical coupler HCPL600,1 linear optical coupling 3H7; Also comprise output interface drive circuit, reference voltage circuit, the ferroelectric memory FM24C16 circuit of unlimited read-write is for preserving the various data of running parameter.
Test section comprises current detection module, voltage detection module; Be specially: current detection module is divided into 3 tunnels, IA, IB, IC are respectively via filter circuit, and amplifying circuit output current signal accesses master chip A/D measuring-signal input, and the operational amplifier model that it adopts is MCP6004; Voltage detection module is divided into 3 tunnels, and UA, UB, UC are respectively via filter circuit, and amplifying circuit output voltage signal accesses master chip A/D measuring-signal input, and the operational amplifier model that it adopts is MCP6004; Communication part comprises, communication power supply DY-05S05-1W, MAX485 chip, and high speed photo coupling HCPL600, optocoupler 3H7 etc., for communication between master control borad and display screen, realize transfer of data and preservation
As shown in figure 18, described power panel 89, working power is provided to all circuit boards, comprising two power module models is XRA15-12, YAS25-15, AC220V voltage transitions become DC12V and DC15V to other circuit supply, also integrated two Auxiliary relay control on power panel 89, are used to indicate contactor and whether connect whether have fault with controller work.
As shown in figure 19, guide and coil control board 82, control for each controller module manual opening-closing, the communication interface of the first guide plate of all controller modules is in parallel with host communication interface simultaneously, realizes controller module and monitor information exchanges and transmits.Pilot section comprises first guide module, auxiliary output module, and first guide module comprises 1 multivibrator NE555,2 optocoupler NE2703 and peripheral circuit thereof; Auxiliary output module comprises 2 optocoupler NE2703 and peripheral circuit.Coil control section, for controlling vacuum tube break-make, comprises capacitor charging part, auxiliary power circuit, and output control circuit forms, and capacitor charging part comprises optocoupler MOC3042, bidirectional triode thyristor BT138, multivibrator NE555 and its peripheral circuit;
Auxiliary power circuit comprises power supply chip LM7812, DC/DC power module DC-12D1212.
Output control circuit comprises power tube 18N50, fast recovery diode MUR860, relay J DQ1, optocoupler 3H7 and peripheral circuit thereof.3 tunnels export and receive the control power tube 18N50 conducting of master control borad master chip switching signal and relay adhesive with same power tube 18N50, optocoupler 3H7, and contactor is closed a floodgate.After closing a floodgate, power tube disconnects, and by relay tip, DC15V voltage is added to electromagnet coil and maintains contactor combined floodgate, and during separating brake, optocoupler 3H7 receives master control borad master chip sub-gate signal control relay and disconnects, and discharges, make contactor separating brake after electromagnet coil power-off.
Described reactor 81 is three-phase transformers, for detecting leak resistance and system voltage.
Described on off state and electric leakage state-detection plate 84, as shown in figure 20, for detecting the conjunction point state of three-phase vacuum tube, specifically comprise resistance detection module, temperature detecting module, zero-sequence current input module, residual voltage input module, phase detecting circuit; Wherein resistance detection module is for detecting a major loop load-side three-phase any insulation resistance relatively, and when detecting that insulation resistance is less than standard value, the master chip meeting output alarm of master control borad and fault-signal, simultaneous faults information can be recorded in storage chip.
Temperature detecting module comprises signal sampling circuit, and through amplifying circuit output temperature signal access master control borad signal measurement input, for detecting the temperature of vacuum tube when circuit breaker works, the operational amplifier model that it adopts is TLC2262;
The function of zero-sequence current input module, residual voltage input module be respectively by zero sequence current signal, residual voltage signal via filter circuit, the signal input part of amplifying circuit access master control borad, the operational amplifier model that it adopts is TL2262, LM224.Also has the phase detecting circuit of zero-sequence current I0 and residual voltage U0, sine wave is become square wave by shaping circuit by U0 and the I0 signal after filter and amplification, then the zero crossing of two waveforms is compared, forward is when U0 and I0 phase difference is less than 90 degree, testing circuit finally can export the pulse signal feeding CPU that one-period is 10ms, otherwise is oppositely.Meeting output low level signal always.
This magnetic starter is the key components of magnetic combination switch, 2-16 magnetic starter can form a magnetic combination switch, three-phase voltage is after AC220V is connected with static terminal seat by the spring needle of moved end stroma by main power transformer step-down. for whole magnetic starter provides working power .AC220V power supply to be converted to direct voltage through power panel 89, by wire be guide and coil control board 82, analog quantity detects, communication and master control borad 87, on off state detects and detection of electrical leakage plate 84 provides working power.
Analog quantity detection, communication and master control borad 87 power supply are connected rear CPU and are started working, and detect voltage in real time, current signal, start to detect leak resistance, U0, I0, the signals such as temperature simultaneously by analog quantity testing circuit.And the on off operating mode of real-time inspection vacuum tube, the connection that all information can be detected by analog quantity, the communicating circuit of communication and master control borad 87 is connected with static terminal seat 9 is connected with display screen control board, the information of module is shown in real time.Simultaneously all working parameter of magnetic starter also can be kept in the memory FM24C16 of master control borad 87 by key assignments by display screen.If under disjunction (i.e. separating brake) state, master control borad 87 detected by off state and detection of electrical leakage plate 84 detection module earth leakage search/lockout whether normal, do not having in out of order situation, operating personnel input switching signal to master control borad 87 by guide and coil control board 82, after the master chip of master control borad 87 receives switching signal, export again switching signal to guide and coil control board 82 control solenoid drive bindiny mechanism vacuum tube moving contact 12 and fixed contact 11 are connected, when on off state detection and detection of electrical leakage plate 84 detect that three vacuum tubes are all in on-state, namely assert that contactor is "on" position, now master control borad starts the operating state starting to detect contactor by the parameter of setting, judge whether overload, short circuit, uneven, disconnected phase, overvoltage, under-voltage, the faults such as electric leakage, when Arbitrary Fault being detected, analog quantity detects and the time output sub-gate signal of master control borad 87 follow procedure setting controls solenoid separating brake to guide and coil control board 82, electromagnet power-off makes vacuum tube moving contact 12 and fixed contact 11 separately.When on off state detects and detection of electrical leakage plate 84 detects that three vacuum tubes are all in disjunction state, namely assert that contactor is gate-dividing state, display screen can demonstrate the reason of fault trip and the current operating state of module simultaneously.
Claims (10)
1. a modular vacuum magnetic starter, it is characterized in that, there is starter body, comprise contactor (1) and controller (2), described contactor (1) has contactor housing (3), three containing cavities are provided with from top to bottom successively in contactor housing (3), calutron (4) is equipped with in each containing cavity, the vacuum tube (6) be connected by bindiny mechanism (5) with calutron (4) and the current transformer (7) be connected with vacuum tube (6), described controller (2) has the controller box (8) matched with contactor housing (3), electric wire is connected with between controller box (8) and contactor housing (3), and locked mutually by retaining mechanism.
2. modular vacuum magnetic starter as claimed in claim 1, it is characterized in that, reactor (81) is provided with in described controller box (8), power panel (89), guide and coil control board (82), on off state detection and detection of electrical leakage plate (84, analog quantity detection, communication and master control borad (87, and be connected with the static terminal seat (9) be positioned at above controller box respectively, static terminal seat (9) is provided with spring needle moved end stroma (10) be mated; Described power panel (89), reactor (81), guide and coil control board (82), analog quantity detection, communication and master control borad (87) are fixed in controller box (8) by binding post, and on off state detects and detection of electrical leakage plate (84) is arranged on controller box (8) inwall.
3. modular vacuum magnetic starter as claimed in claim 2, it is characterized in that, there is in described vacuum tube (6) two moving contacts be oppositely arranged (12) and fixed contact (11), the bar portion of fixed contact (11) extends vacuum tube (6) outer end and extends the input (14) of housing sidewall I (13) as vacuum tube through after current transformer (7), another outer end that vacuum tube (6) is extended in the bar portion of moving contact (12) is connected with calutron (4) by bindiny mechanism (5), the bar portion of stretching out the moving contact (12) of vacuum tube (6) another outer end is connected with conducting block (15), conducting block (15) is connected with the output (16) of vacuum tube (6) by conductive strips, output (16) extends housing sidewall I (13), input (14) and output (16) are conductive columns, be crisscross arranged in the outside of housing sidewall I (13).
4. modular vacuum magnetic starter as claimed in claim 3, it is characterized in that, calutron (4) has cylindrical body (17), coil (18) is provided with in cylindrical body (17), the upper position corresponding with coil (18) of cylindrical body (17) is provided with line outlet I, dynamic iron core (21) is provided with in coil (18), dynamic iron core (21) has axial cavity and through hole, bindiny mechanism (5) has the flange (19) extended in cylindrical body (17), be placed in follower spring (22) one end in cavity and flange (19) is conflicted, the other end and dynamic iron core (21) are conflicted, being placed in cavity and being enclosed within follower spring (22) tripping spring outward (23) one end and cylindrical body (17) is conflicted, the other end and dynamic iron core (21) are conflicted, one end that two ends have the not threaded power transmission screw of tool (24) in the middle of screw thread is threaded through dynamic iron core (21), follower spring (22) and flange (19) successively, and the outside that the other end is arranged in dynamic iron core (21) passes through that nut (25) is fastening extends to contactor housing (3) and penetrate controller box (8) outward.
5. modular vacuum magnetic starter as claimed in claim 4, it is characterized in that, described controller box (8) is provided with incoming line (26) with the contact site of contactor housing (3), terminal block (28) is provided with outside housing sidewall III (32), the upper position corresponding with current transformer (7) of housing sidewall III (32) is provided with line outlet II (29), the position corresponding with conductive strips is provided with line outlet III (30), the position corresponding with line outlet I is provided with line outlet IV (31), the electric wire of described current transformer is drawn from line outlet II (29), to be detected with on off state by terminal block (28) and detection of electrical leakage plate (84) is connected, the electric wire of drawing from conductive strips is drawn by line outlet III (30), be connected with reactor (81) by terminal block (28), the electric wire of coil (18) is drawn through terminal block (28) from line outlet I and IV (31) and is connected with guide and coil control board (82).
6. modular vacuum magnetic starter as claimed in claim 5, it is characterized in that, also comprise module rack (38), starter body is placed in module rack (38), described module rack (38) has collet (39), starter body is placed on collet (39), the left and right edges of collet (39) is provided with slideway (40), middle part is provided with two groups of Bearning mechanisms (41), the axle of Bearning mechanism (41) is respectively equipped with guide spring sheet (42).
7. modular vacuum magnetic starter as claimed in claim 6, it is characterized in that, the top of described module rack (38) is provided with load push-pull (44), load push-pull (44) comprises fixed head (45), the both sides of fixed head (45) are fixed on the top of module rack (38) by bolt IV (46), another both sides have downward prolongation wall I (47) and II (48), extend on wall I (47) and there are three through holes I, II and III, extend on wall II (48) and there are three through holes I ' corresponding with extending the upper through hole of wall I (47), II ' and III ' is positioned at the push-pull mechanism below fixed head (45), push-pull mechanism has base plate (49), the both sides of base plate (49) are provided with wing plate (50), wing plate (50) is interacted by stopping means and Switch main body, base plate (49) is installed with movable block (51), movable block (51) has three through holes I corresponding with the through hole extended on wall I (47) and II (48) ", II " and III ", main shaft (52) inserts three through holes being positioned at middle a group, two axis of guides (53) insert two groups of three through holes being positioned at both sides respectively, (52) have trapezoidal thread with described main shaft.
8. modular vacuum magnetic starter as claimed in claim 7, it is characterized in that, described stopping means has the handle (34) of band fulcrum, handle rotation axle (37) is through the fulcrum place of handle (34), to shake hands (34) be fixed in the edge of controller box (8) sidewall near contactor housing (3), the end of handle (34) sets firmly the handle axis of guide (33), and wing plate (50) is positioned between the handle axis of guide (33) and handle rotation axle (37).
9. modular vacuum magnetic starter as claimed in claim 7, it is characterized in that, also comprise spring needle moved end stroma (10) coordinated with described spring needle static terminal seat (9), described spring needle moved end stroma (10) is positioned at controller box (8) top, the outside of spring needle moved end stroma (10) is provided with fixed mount (54), the both sides of fixed mount (54) are provided with gathering sill (55), the side wall upper part of module rack (38) is provided with the slideway matched with gathering sill (55), and fixed mount (54) is connected with elevating mechanism.
10. the modular vacuum magnetic starter as described in as arbitrary in claim 1-9, it is characterized in that, described retaining mechanism comprises on controller box (8) sidewall I and II and extends several binding (35) respectively to the direction of contactor housing (3), and binding (35) is connected with contactor housing (3) by bolt II (36).
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| CN201410380397.1A CN104241027B (en) | 2014-08-04 | 2014-08-04 | A kind of modular vacuum magnetic starter |
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| CN201410380397.1A CN104241027B (en) | 2014-08-04 | 2014-08-04 | A kind of modular vacuum magnetic starter |
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| CN104241027B CN104241027B (en) | 2016-05-18 |
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| CN104241027B (en) | 2016-05-18 |
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Address after: 325000 Yueqing Economic Development Zone, Zhejiang Province, 278 Wei16 Road (Zhejiang Versaille Machinery Manufacturing Co., Ltd.) Patentee after: Qiaorong Electronic Technology Co., Ltd. Address before: 325000, No. seventeen, No. 261, weft Road, Yueqing Economic Development Zone, Wenzhou, Zhejiang Patentee before: WENZHOU QIAORONG ELECTRONIC TECHNOLOGY CO., LTD. |