CN102623252A - Capacitive contactor with bistable-state current-limiting contacts - Google Patents
Capacitive contactor with bistable-state current-limiting contacts Download PDFInfo
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- CN102623252A CN102623252A CN201210113720XA CN201210113720A CN102623252A CN 102623252 A CN102623252 A CN 102623252A CN 201210113720X A CN201210113720X A CN 201210113720XA CN 201210113720 A CN201210113720 A CN 201210113720A CN 102623252 A CN102623252 A CN 102623252A
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Abstract
The invention discloses a capacitive contactor with bistable-state current-limiting contacts. The capacitive contactor comprises a resistance wire group which is used for connecting a current-limiting contact group and a contactor body in parallel, wherein a base of the current-limiting contact group is arranged on the contactor body in an up-and-down combination manner; an auxiliary moving contact of the current-limiting contact group has an initial stable-state position and a release stable-state position; the release stable-state position is defined by an auxiliary contact support, a reaction spring and a cover plate on the base; and when the auxiliary moving contact is located at the initial stable-stage position, a main contact of the contactor body is disconnected and a magnetic coupling mechanism of the current-limiting contact group performs pulling-in. When the auxiliary contact is located at the release stable-state position, the main contact of the contactor body is pulled in, and the magnetic coupling mechanism performs releasing. At the initial stable-state position, an initial open distance L1 exists between the auxiliary contact and an auxiliary static contact of the current-limiting contact group, at the release stable-state position, a release open distance L11 exists between the auxiliary moving contact and the auxiliary static contact, and in addition, in each operation of the contactor, the open distance between the auxiliary contacts is automatically switched between the two different open distances L1 and L11. The invention can be applied to contactors of any specification.
Description
Technical field
The present invention relates to a kind of capacitor switching contactor; Be meant that especially a kind of versatility with bistable state current limliting contact is extremely strong, can prevent the capacitor switching contactor that current limliting contact secondary is connected; Can be used in the compensation equipment of automatic compensating power, through switch capacitor, to improve power factor.
Background technology
Adopting the capacitor switching contactor switched capacitor is a kind of traditional capacitor switching mode.Capacitor switching contactor derives from straight-style ac contactor; Structurally generally be divided into two kinds of forms: a kind of is to be that application for a patent for invention or the Granted publication of CN1262774A number gone up formula for the utility model patent of CN2606963Y is disclosed like publication number, and their current limliting sets of contacts is located at the top of contactor main body; Another kind be as Granted publication number be the disclosed gauche form structure of utility model patent of CN2480973Y, its current limliting sets of contacts be in the contactor main body about.Capacitor switching contactor is made up of the contactor main body that is provided with main circuit, the current limliting sets of contacts that is provided with current-limiting circuit and current-limiting resistance line; The contactor main body is connected in series between the low-voltage capacitance of main circuit and switching, and main circuit comprises the circuit of this contactor main body that is connected in series; The current limliting sets of contacts is connected the both sides of contactor main body through the current-limiting resistance line parallel, and promptly current-limiting circuit comprises the circuit of this be connected in parallel current limliting sets of contacts and resistive conductor.
The operation principle and the primary structure of conventional capacitor switching contactor are: in the making operation process of contactor main body; The current limliting sets of contacts is closed earlier; The current-limiting circuit of being made up of current limliting sets of contacts and current-limiting resistance line is connected earlier, carried out and suppress surge current and absorb superpotential task, the contactor main body is closed then; Main circuit is connected, carried out the task of switched capacitor.The contactor main body comprises each extremely shared main contact support, every extremely a pair of active contact and main fixed contact; The active contact of each utmost point is installed in main contact respectively and supports, and moving up and down and carry out closure or disjunction compounding practice with the main fixed contact of each utmost point respectively with the main contact support.The current limliting sets of contacts comprise one each extremely shared attach the contact support, whenever extremely a pair ofly attach moving contact and attach fixed contact; The moving contact that attaches of each utmost point is installed in and attaches contact and support, and encloses moving up and down of contact support and carry out closure or disjunction compounding practice with the fixed contact that attaches of each utmost point respectively.The current limliting sets of contacts by pedestal, attach contact support, loam cake and reaction spring etc. and form, be located at of the shell connection of the current limliting sets of contacts of contactor main body top through pedestal and contactor main body.The active contact of each utmost point of contactor main body and main fixed contact are connected in series in respectively in the main circuit of each utmost point; The attaching moving contact, attach fixed contact and be connected in series in respectively in the current-limiting circuit of each utmost point of each utmost point of current limliting sets of contacts; Main circuit is connected through the current-limiting resistance line with current-limiting circuit; Form current-limiting circuit and main circuit parallel-connection structure, promptly by active contact, main fixed contact connect the main circuit that constitutes with by attach moving contact, attach fixed contact, the current-limiting resistance line current-limiting circuit that constitutes of connecting is connected in parallel.The contact supporting assembly that attaches of current limliting sets of contacts is divided into two parts up and down; Top comprises the moving contact that attaches that attaches contact support and each utmost point; The lower part comprises an action bars moving up and down (or being the handle of extending); And through being located at the permanent magnet connection on top, the contact support of lower part and contactor body articulates and realizes interlock.Generally; Permanent magnet is located to be attached in the contact support; Magnetic conductive board is located on the action bars, and it is downward that permanent magnet acts on the magnetic force direction of attaching in the contact support, and the elastic force of reaction spring also acts on to be attached in the contact support; But its force direction upwards, promptly acts on the elastic force direction of attaching in the contact support and act on that to attach the magnetic force direction that contact supports opposite.Distance between permanent magnet and magnetic conductive board is during less than critical distance, and magnetic force is greater than elastic force, attaches the contact support and can link downwards with action bars thereby cause.Distance between permanent magnet and magnetic conductive board is during greater than critical distance, and magnetic force does not have interaction relation less than elastic force thereby cause to attach between contact support and the action bars, attaches contact and is supported in and gets back to stable initial condition under the elastic force effect.Under initial condition, attach moving contact and attach the fixed contact disjunction, attach moving contact with attaching between the fixed contact and keep opening normally distance, the main contact support of action bars and contactor body articulates and realizes to link.In the making operation process of capacitor switching contactor: the permanent magnet and the magnetic conductive board of current limliting sets of contacts assembly are in attracting state earlier, make to attach the contact support and move down with action bars interlock and with the main contact support of contactor main body; Because the clearance between open contacts that attaches of current limliting sets of contacts is opened distance less than the main contact of contactor main body, so attach moving contact and to attach fixed contact closed earlier and current-limiting circuit is connected earlier, the current-limiting resistance silk in this moment current-limiting circuit plays the effect of shoving of suppressing.Then; The main contact support drives action bars and continues to move down; Distance between requirement permanent magnet and the magnetic conductive board makes less than critical distance to attach moving contact and attach fixed contact and still remains closed; And initiatively contact is closed again and connect after making main circuit with main fixed contact after certain time of delay, if moving contact occurs attaching and attach the fixed contact disjunction in this process, then causes the fault of secondary disjunction.Main contact support drive action bars continues to move down then; Behind the ad-hoc location of distance between a permanent magnet and the magnetic conductive board greater than critical distance; Make the contact that attaches of current limliting sets of contacts be supported under the reaction spring effect and get back to initial position; And make and attach moving contact and attach the fixed contact disjunction, thereby cut off current-limiting circuit and make the contactor main body get into normal switching operating state.In the breaking course of capacitor switching contactor; The action bars of current limliting sets of contacts moves up with the main contact support of contactor main body earlier; Make initiatively contact and the elder generation's disjunction of main fixed contact and cut off main circuit; Then main contact support and action bars continue to move up arrive the ad-hoc location of distance between another permanent magnet and the magnetic conductive board less than critical distance after; Make the permanent magnet and the magnetic conductive board adhesive of current limliting sets of contacts, attach the contact support and move down but require to attach moving contact and attach fixed contact and still keep disjunction.If attaching the contact support at this moves down and occurs attaching moving contact in the process and attach the fixed contact closure, the fault that then can cause the current-limiting circuit secondary to connect.Then, main contact support and action bars continue upwards again, and drive attaches the moving contact support and moves up, and returns initial position up to attaching the contact support, thereby make capacitor switching contactor get into the disjunction state, promptly withdraw from the switching operating state.
Visible from the operation principle and the design feature of the existing capacitor switching contactor of above introduction, present capacitor switching contactor is particularly gone up following formula structure capacitive contactor, and ubiquity and principle structure design the technical problem due to unreasonable.For example; Existing current limliting sets of contacts adopts the design of monostable theory structure; Still be the disjunction normality regardless of being in the connection normality promptly at capacitor switching contactor; Attach the contact support and attach the stable state that moving contact all is in same initial position; Thereby the two large problems that has been difficult to overcome in having caused manufacturing and designing: the one, the coupling contradiction between the stroke of each STATEMENT OF FEDERALLY SPONSORED, position relation and variation (motion) characteristic, the 2nd, there is bigger random drift between the design characteristics of the variable of each stroke, position and the actual characteristic.Specifically; Because stroke, the location variable of each STATEMENT OF FEDERALLY SPONSORED have constituted complicated multiple sealing dimension chain; And each variable not only will satisfy the operation principle requirement of capacitor switching contactor; But also to satisfy structural requirement separately, be very difficult, that have or even conflicting so will in the sealing dimension chain, satisfy two kinds of requirements simultaneously; And because stroke, the location variable of each STATEMENT OF FEDERALLY SPONSORED have constituted complicated multiple sealing dimension chain; And a variable receives multiple stochastic factor again; In fact can receive performance, scale error, the alignment error of permanent magnet less than critical distance like the distance between permanent magnet and the magnetic conductive board; Factor affecting such as the elastic force error of reaction spring and excess of stroke spring; So random drift will inevitably occur between the design characteristics of variable and the actual characteristic; And when drift appears in one of them variable, will inevitably cause the random drift of other variable; Thereby caused poor reliability (failure rate of connecting like the secondary disjunction in the connection process, secondary in breaking course is high), poor stability (susceptibility as to temperature rise is high), manufactured difficulty (require high, Installation and Debugging difficulty), versatility poor (can not be applicable to the contactor main body of different size with a kind of current limliting sets of contacts) and be difficult to promote a series of defectives such as credit rating of product like machining accuracy, assembly precision to correlated parts.
Summary of the invention
The objective of the invention is to overcome the defective of above-mentioned prior art; A kind of capacitor switching contactor with last formula of bistable state current limliting contact is provided; It not restricted flow attach contact opening apart from the restriction; Can guarantee that current limliting attaches contact and connect prior to main contact, the fault that can avoid the current-limiting circuit secondary to connect again fully, and can be applied to the contactor of any specification.
Above-mentioned purpose is so realized by the present invention: a kind of capacitor switching contactor with bistable state current limliting contact; Comprise having and be installed in active contact 23 and the resistive conductor group 3 that is fixedly mounted on contactor main body 2, the current limliting sets of contacts 1 of the main fixed contact 25 on the shell block 21 and is used for current limliting sets of contacts 1 and contactor main body 2 are connected in parallel in the main contact support 22 by excess of stroke mode; Described current limliting sets of contacts 1 comprise be installed on the pedestal 11 attach contact support 12 and attach contact bottom 15, attach fixed contact 14 and being installed in of cooperating with its closure/disjunction that are fixed on the pedestal 11 attach attaching moving contact 13, be arranged on and attach contact support 12 and attach magnetic force coupling mechanism 16 between the contact bottom 15, be arranged on the reaction spring 17 and the position-limit mechanism 18 that attach between contact support 12 and the pedestal 11 in the contact support 12; The pedestal 11 of described current limliting sets of contacts 1 is fixedly mounted on the shell block 21 of contactor main body 2 by compound mode up and down, and it attaches contact bottom 15 and supports 22 to be connected and mutual the interlock with the main contact of contactor main body 2.The moving contact 13 that attaches of described current limliting sets of contacts 1 has an initial steady state location and a release stable position; This release stable position is to be limited 111 of cover plates that attach on contact support 12, reaction spring 17 and the pedestal 11; And it is described when attaching moving contact 13 and being in initial steady state location; The active contact 23 and main fixed contact 25 disjunctions of contactor main body 2, magnetic force coupling mechanism 16 adhesives of current limliting sets of contacts 1; Described attach moving contact 13 and be in when discharging stable position, the active contact 23 and main fixed contact 25 closures of contactor main body 2, and the magnetic force coupling mechanism 16 of current limliting sets of contacts 1 discharges.In said initial steady state location; The attaching moving contact 13 and attach to have between the fixed contact 14 and initially open of described current limliting sets of contacts 1 apart from L1; And in said release stable position; Attaching moving contact 13 and attaching to have between the fixed contact 14 of current limliting sets of contacts 1 discharges apart from L11, and in each operation of contactor, described current limliting sets of contacts 1 attach contact opening apart from all these two different opening to 13, between 14 apart from automatic switchover between the value.
Recommendablely be; Described attach moving contact 13 when discharging stable position and attach discharging apart from L11 when attaching moving contact 13 in initial steady state location and attach initially opening apart from L1 between the fixed contact 14 between the fixed contact 14, and this is initially opened apart from L1 less than opening apart from L2 between active contact 23 and the main fixed contact 25 of contactor main body 2 when the stable disjunction state.
What especially have advantage is that the magnetic force coupling mechanism 16 of described current limliting sets of contacts 1 comprises permanent magnet 161 and inhale iron 162 that when the attraction between permanent magnet 161 and the suction iron 162 equaled the elastic force of reaction spring 17, the adhesive critical distance between the two was S; Described attach moving contact 13 and have distance h from discharging stable position to the initial steady state location; And in described initial steady state location; Said distance of attaching between contact support 12 and its cover plate 111 is h; In described release stable position, said distance h of attaching between contact support 12 and the cover plate 111 is zero.Aforesaid distance h, initially open, open apart from L2 and adhesive critical distance S and should meet the following conditions apart from L1:
L1＜L2 and h＜S＜L1+h; Perhaps
h＜S＜L1＜L2。
Another enforcement structure with advantage is; Described position-limit mechanism 18 comprises that contact supports the boss 114 on block 124 and the pedestal 11 on 12; When attaching moving contact 13 and attaching fixed contact 14 disjunctions, block 124 separates with boss 114, and the distance between said block 124 and the boss 114 is D1; After attaching moving contact 13 and attaching fixed contact 14 closures, block 124 contacts with boss 114; When attaching moving contact 13 and be in initial steady state location, said distance B 1, attach moving contact 13 and attach initially opening between the fixed contact 14 apart from opening apart from L2 and should meet the following conditions between the active contact 23 of L1, contactor main body 2 and the main fixed contact 14:
L1＜D1＜L2+C。
When contactor main body 2 of the present invention is in stable disjunction state; Be arranged on and attach contact support 12 and attach magnetic force coupling mechanism 16 adhesives between the contact bottom 15; Attach contact support 12 and attached 15 qualifications of contact bottom; Attach contact bottom 15 and be connected with main contact support 22 and be defined, make the moving contact 13 that attaches that attaches in the contact support 12 be stabilized in initial steady state location.And contactor main body 2 of the present invention is when being in stable on-state; Being arranged on the magnetic force coupling mechanism 16 that attaches contact support 12 and attach between the contact bottom 15 discharges; Attach contact support 12 under the elastic force effect of reaction spring 17 with pedestal 11 on cover plate 111 contact and be defined, make the moving contact 13 that attaches that attaches in the contact support 12 be stabilized in the release stable position.
On making and assembling be very easily, an end of described reaction spring 17 is supported that with attaching contact 12 are connected, the other end of reaction spring 17 is connected with pedestal 11.And the permanent magnet 161 of described magnetic force coupling mechanism 16 is arranged on and attaches contact and support on 12, inhales iron 162 and is arranged on and attaches on the contact bottom 15.The suction iron of perhaps described magnetic force coupling mechanism 16 is arranged on to be attached in the contact support 12, and permanent magnet is arranged on to be attached on the contact bottom 15.
As previously mentioned, the capacitor switching contactor that generally adopts at present, suppose L1 represent when initial steady state location current limliting sets of contacts attach contact between initially open distance; L2 represent contactor main body 2 when stable disjunction state main contact between open distance, S represents the permanent magnet 161 of magnetic force coupling mechanism 16 and inhales adhesive critical distance between the iron 162 (this moment, the attraction between the two equaled the elastic force of reaction spring 17), in the breaking course of capacitor switching contactor; The contact supporting assembly bottom that attaches of current limliting sets of contacts moves upward with the main contact support of main body contactor, and when the distance of attaching contact supporting assembly bottom and top during less than S, being located at the permanent magnet that attaches contact supporting assembly top can be pulled together the upper and lower; If the current limliting sets of contacts attaches clearance between open contacts L1 less than S; Will produce the fault that the current-limiting circuit secondary is connected, therefore require the L1 must be greater than S, but in the connection process of capacitor switching contactor; Connect prior to main circuit for realizing current-limiting circuit; Require L1 promptly to satisfy S＜L1＜L2 again, to this conflicting requirement less than L2; The contactor of small dimension is difficult to solve; As the synchronism, permanent magnet magnetic force of considering contact again are with temperature rising these unfavorable factors that can diminish, even big specification contactor also need propose higher requirement to the synchronism of product, the performance of permanent magnet.By contrast; Having removed to the invention property main contact opens apart from L2, attaches the problem that clearance between open contacts L1 is limited by S; Make with a kind of current limliting sets of contacts and be applicable to that the contactor of different size becomes possibility; Versatility is extremely strong, and capacitor switching contactor of the present invention is lower to the technological requirement of machining accuracy and assembly precision, also can reduce the performance requirement of permanent magnet.
Description of drawings
Fig. 1 is the operation principle sketch map with capacitor switching contactor of bistable state current limliting contact of the present invention.
Fig. 2 is the three-dimensional appearance sketch map with capacitor switching contactor of bistable state current limliting contact of the present invention.
Fig. 3 has specifically illustrated the structural representation of current limliting sets of contacts and contactor main body, and the moving contact that attaches shown in the figure is in initial steady state location.
Fig. 4 shows the structural representation of current limliting sets of contacts, and the moving contact that attaches shown in the figure is in the release stable position.
Fig. 5 to Figure 12 is respectively the structural representation sketch with capacitor switching contactor of bistable state current limliting contact of the present invention, wherein:
Fig. 5 to Fig. 8 shows respectively attaches moving contact, the position of each movement parts in contact, magnetic force coupling mechanism, the position-limit mechanism initiatively under contactor main body each state from stable disjunction state to the operating process of stable on-state; Wherein the moving contact that attaches of the current limliting sets of contacts among Fig. 5 is in initial steady state location;
Fig. 9 to Figure 12 shows the position that attaches each movement parts in moving contact, active contact, magnetic force coupling mechanism, the position-limit mechanism under each state the operating process of contactor main body from stable on-state to stable disjunction state respectively; The moving contact that attaches of current limliting sets of contacts is in the release stable position among Fig. 9, Figure 10.
In the accompanying drawings; Symbol L1 representative when initial steady state location the current limliting sets of contacts attach contact between initially open distance; L2 represent contactor main body 2 when stable disjunction state main contact between open distance; L11 representative when discharging stable position, attach contact between discharge distance; L21 representative contactor main body 2 main contacts shown in Figure 6 between open distance, the L22 representative discharge main contact when not reaching stable state disjunction position between open distance, the distance when on behalf of contactor main body 2, D1 be in stable disjunction state between block 124 and the boss 114; On behalf of contactor main body 2, D2 be in the distance between the block 124 and boss 114 when stablizing on-state; The excess of stroke that on behalf of main contact, C support, the residue excess of stroke that on behalf of main contact, C1 support, S represents the permanent magnet 161 of magnetic force coupling mechanism 16 and inhales the adhesive critical distance between the iron 162; Attraction between the two equals the elastic force of reaction spring 17 at this moment; S1 represents the permanent magnet 161 of magnetic force coupling mechanism 16 shown in Figure 7 and inhales the distance between the iron 162, the distance when on behalf of contactor main body 2, S2 be in stable on-state, 16 releases of magnetic force coupling mechanism between permanent magnet 161 and the suction iron 162, permanent magnet 161 when on behalf of magnetic force coupling mechanism 16, S3 discharge and the distance between the suction iron 162; The h representative attaches the distance between contact support 12 and the cover plate 111, i.e. expression attaches moving contact 13 from discharging stable position to the distance the initial steady state location.
Embodiment
Specify the embodiment with capacitor switching contactor of bistable state current limliting contact of the present invention below in conjunction with accompanying drawing.Capacitor switching contactor with bistable state current limliting contact of the present invention is not limited to the description of following examples.
Fig. 1 is the operation principle sketch map with capacitor switching contactor of bistable state current limliting contact of the present invention, and Fig. 2 is the three-dimensional appearance sketch map.Referring to Fig. 1 and 2; The resistive conductor group 3 that capacitor switching contactor with bistable state current limliting contact of the present invention comprises current limliting sets of contacts 1, contactor main body 2 and is used for current limliting sets of contacts 1 and contactor main body 2 are connected in parallel; Current limliting sets of contacts 1 adopts with contactor main body 2 and goes up formula, and current limliting sets of contacts 1, contactor main body 2, resistive conductor group 3 can adopt known connected mode to realize with the capacitance group 4 of switching.Current limliting sets of contacts 1 shown in Fig. 3 and Fig. 4 comprise be installed on the pedestal 11 attach contact support 12 and be installed in attach in the contact support 12 attach moving contact 13, attach contact bottom 15, be fixed on the pedestal 11 attach fixed contact 14, be arranged on attach contact support 12 and attach magnetic force coupling mechanism 16 (referring to Fig. 5) between the contact bottom 15, be arranged on attach the reaction spring 17 between contact support 12 and the pedestal 11 and be arranged on attach contact support 12 and pedestal 11 between position-limit mechanism 18 (referring to Fig. 5), wherein attach moving contact 13 with attach fixed contact 14 be can contact closure each other or separate cooperation to attach contact right.Magnetic force coupling mechanism 16 comprises and is arranged on the permanent magnet 161 that attaches in the contact support 12, is arranged on the suction iron 162 that attaches on the contact bottom 15.When the distance between permanent magnet 161 and the suction iron 162 is less than or equal to adhesive critical distance S; Attraction between permanent magnet 161 and the suction iron 162 is greater than the elastic force of reaction spring 17; So that permanent magnet 161 can link or the ability adhesive with suction iron 162 each other, promptly the distance between permanent magnet 161 and the suction iron 16 equals 0.And at permanent magnet 161 and when inhaling distance between the iron 162 greater than adhesive critical distance S; Attraction between permanent magnet 161 and the suction iron 162 is less than the elastic force of reaction spring 17; Discharge between permanent magnet 161 and the suction iron 16; Be that magnetic force coupling mechanism 16 discharges, can not each other link between permanent magnet 161 and the suction iron 162 this moment, more can not adhesive.Position-limit mechanism 18 comprises that contact supports the boss 114 on block 124 and the pedestal 11 on 12.When attaching moving contact 13 and attaching fixed contact 14 disjunctions; Block 124 separates with boss 114, is promptly attaching moving contact 13 and is attaching any moment of fixed contact 14 disjunctions, and block 124 always separates with boss 114; And after attaching moving contact 13 and attaching fixed contact 14 closures, block 124 contacts with boss 114.One end of reaction spring 17 with attach contact and support 12 to be connected; The other end of reaction spring 17 is connected with pedestal 11; Through such connection; Make and attach contact and support 12 to obtain an elastic force, this elastic force orders about to be attached contact support 12 and drives and attach moving contact 13 and attach fixed contact 14 disjunctions, and the direction of this elastic force and magnetic force coupling mechanism 16 act on the in the opposite direction of the attraction of attaching in the contact support 12.Of the present invention attach moving contact 13 to arrive and be stabilized in initial steady state location be in the breaking operation process of the capacitor switching contactor of bistable state current limliting contact, to realize; Arrive and be stabilized in that to discharge stable position be in the making operation process of the capacitor switching contactor of bistable state current limliting contact, to realize and attach moving contact 13; Is the control procedure of on-state in contactor main body 2 from the disjunction state exchange; Attaches moving contact 13 earlier from being transformed into closed crossover position with the initial steady state location of attaching fixed contact 14 disjunctions; Initiatively contact 23 and main fixed contact 25 convert closure into by disjunction then; Magnetic force coupling mechanism 16 converts release into by adhesive, attaches moving contact 13 at last and is transformed into the release stable position from closed crossover position.Convert into the control procedure of disjunction state from on-state in contactor main body 2; Initiatively contact 23 converts disjunction with main fixed contact 25 into by closure earlier; Magnetic force coupling mechanism 16 is changed to adhesive by blind forwarding then, attaches moving contact 13 at last and is transformed into initial steady state location from discharging stable position.Have initial steady state location and discharge two stable position of stable position owing to attach moving contact 13, so capacitor switching contactor of the present invention has bistable current limliting contact.Have two stable position just because of attaching moving contact 13; So capacitor switching contactor of the present invention not only can not appear at secondary disjunction fault in the connection process, can not appear at the fault that the secondary in the breaking course is connected, but also solved stroke, the position relation of each STATEMENT OF FEDERALLY SPONSORED that foregoing prior art exists and changed bigger this two large problems of random drift of existence between design characteristics and the actual characteristic of variable of coupling contradiction and each stroke between (motion) characteristic, position.
Referring to Fig. 3 and 4; Contactor main body 2 comprises the main contact support 22 that is installed on the shell block 21, is installed in the active contact 23 in the main contact support 22 and is fixedly mounted on the main fixed contact 25 on the shell block 21 by excess of stroke mode, initiatively can contact closure/disjunction cooperation between contact 23 and the main fixed contact 25.Here excess of stroke mode is meant that main contact supports 22 can also continue a mobile segment distance along said closing motion direction under active contact 23 and main fixed contact 25 firm closed states, and the mobile ultimate range of this continuation is exactly excess of stroke C.Generally, in order to obtain the contact performance behind the better initiatively contact 23 and main fixed contact 25 closures, the active contact 23 of contactor main body 2 supports that with main contact 22 all press the connection of excess of stroke mode.And in contactor of the present invention, this known excess of stroke connection also can be used to the connection and the breaking operation of current limliting sets of contacts 1.The pedestal 11 of current limliting sets of contacts 1 is fixedly mounted on the shell block 21 of contactor main body 2 by compound mode up and down; The contact bottom 15 that attaches of ductility limit sets of contacts 1 supports that with the main contact of contactor main body 2 22 are connected; And attach contact bottom 15 and support 22 to move with main contact, the syndeton that this realization links each other can adopt known like accompanying drawing 3, the hanging structure shown in 4.After the attaching moving contact 13 and attach fixed contact 14 closures of above-mentioned current limliting contact; Block 124 contacts the two kinds of situation that comprise with boss 114 on the pedestal 11: a kind of is that block 124 is to accomplish simultaneously with the closure of attaching fixed contact 14 with attaching moving contact 13 with contacting of boss 114, and another kind is that block 124 is certain moment after attaching moving contact 13 and attaching fixed contact 14 closures with contacting of boss 114.Under normal conditions; Contacting of block 124 and boss 114 all lags behind the closure of attaching moving contact 13 and attaching fixed contact 14; Its purpose is after attaching moving contact 13 and attaching fixed contact 14 closures, can obtain better contact performance, and what realize that this purpose adopts is knownly to attach moving contact 13 and the excess of stroke mounting structure that attaches between the contact support 12.Certainly, if do not adopt said excess of stroke mounting structure, then must adopt block 124 and contacting of boss 114 to be and attach moving contact 13 and attach the structure that fixed contact 14 closures realize simultaneously.Attach contact support 12, attach contact bottom 15, attach fixed contact 14 and adopt known mounting structure with the installation of pedestal 11 respectively.The permanent magnet 161 of magnetic force coupling mechanism 16 shown in the drawings with inhale iron 162 and be separately positioned on and attach contact support 12, attach on the contact bottom 15; Alternative scheme is: magnetic force coupling mechanism 16 comprises and is arranged on the suction iron that attaches in the contact support 12, is arranged on the permanent magnet that attaches on the contact bottom 15; When the distance between permanent magnet and suction iron was less than or equal to adhesive critical distance S, the attraction between permanent magnet and the suction iron was greater than the elastic force of reaction spring 17.
Fig. 5 to Figure 12 is respectively the structural principle simplified schematic diagram with capacitor switching contactor of bistable state current limliting contact of the present invention, and wherein: Fig. 5 to Fig. 8 shows respectively attaches moving contact 13, the position of each movement parts in contact 23, magnetic force coupling mechanism 16, the position-limit mechanism 18 initiatively under contactor main body 2 each state from stable disjunction state to the operating process of stable on-state; Fig. 9 to Figure 12 shows the position that attaches each movement parts in moving contact 13, active contact 23, magnetic force coupling mechanism 16, the position-limit mechanism 18 under each state the operating process of contactor main body 2 from stable on-state to stable disjunction state respectively.Wherein Fig. 4 and shown in Figure 9 be that capacitor switching contactor is in the connection operating state.
Referring to Fig. 4 and Fig. 9; Corresponding capacitor switching contactor is in the connection operating state; Attach moving contact 13 and have one and discharge stable position, this releases stable position is to attach attaching contact support 12, being arranged on the reaction spring 17 and the cover plate on the pedestal 11 111 that attach between contact support 12 and the pedestal 11 and limiting jointly of moving contact 13 installation.Specifically; When contactor main body 2 is in stable on-state; Being arranged on the magnetic force coupling mechanism 16 that attaches contact support 12 and attach between the contact bottom 15 discharges; The release of magnetic force coupling mechanism 16 make attach contact support 12 under the elastic force effect of reaction spring 17 with pedestal 11 on cover plate 111 contact and be defined, the qualification that attaches contact support 12 makes the moving contact 13 that attaches that attaches in the contact support 12 be stabilized in the release stable position.Visible by Fig. 9; Be in when discharging stable position attaching moving contact 13; The active contact 23 of contactor main body 2 is in stable closure state with main fixed contact 25, attach simultaneously contact support 12 with pedestal 11 on cover plate 111 contact, promptly attach distance h=0 between contact support 12 and the cover plate 111.Promptly as shown in Figure 9; When contactor main body 2 is in stable on-state; Attach moving contact 13 and attach fixed contact 14 disjunctions and attach moving contact 13 and attach distance L 11 between the fixed contact 14 and (promptly attach contact when discharging stable position, attaching moving contact 13 and attach the distance of opening between the fixed contact 14; Be called for short discharge apart from) maximum, magnetic force coupling mechanism 16 discharge and permanent magnet 161 with inhale between the iron 162 apart from S2 maximum, the block 124 of position-limit mechanism 18 and distance B 2 maximums between the boss 114.
Fig. 3 and capacitor switching contactor shown in Figure 5 are in the disjunction state; Attach moving contact 13 and have an initial steady state location, this initial steady state location be installation attach moving contact 13 attach contact support 12, be connected with main contact support 22 attach contact bottom 15 and be arranged on the magnetic force coupling mechanism 16 that attaches contact support 12 and attach between the contact bottom 15 and limit jointly.Specifically; When contactor main body 2 is in stable disjunction state; Be arranged on and attach contact support 12 and attach magnetic force coupling mechanism 16 adhesives between the contact bottom 15; The adhesive of magnetic force coupling mechanism 16 makes to be attached contact support 12 and is attached contact bottom 15 and limit, and attaches contact bottom 15 and is connected with main contact support 22 and is defined, thereby make the moving contact 13 that attaches that attaches in the contact support 12 be stabilized in initial steady state location.Visible by Fig. 5, when attaching moving contact 13 and be in initial steady state location, contactor main body 2 is in stable disjunction state; Initiatively contact 23 and main fixed contact 25 disjunctions; Initiatively open maximum between contact 23 and the main fixed contact 25, attach contact support 12 and separate, attach between contact support 12 and the cover plate 111 and have distance h with cover plate 111 on the pedestal 11 apart from L2; Though attach moving contact 13 and attach fixed contact 14 disjunctions; But initially opening apart from L1 (promptly attach moving contact 13 and attach the distance between the fixed contact 14 when the initial steady state location, that also claims to attach moving contact 13 initially opens distance, is called for short and initially opens apart from L1) between them less than shown in Figure 9 discharging apart from L11; 16 adhesives of magnetic force coupling mechanism; Permanent magnet 161 contacts with inhaling iron 16, and promptly the distance between them is 0, when position-limit mechanism 18 is in stable disjunction state in contactor main body 2; Distance B 1 between its block 124 and the boss 114 is greater than attaching initially the opening apart from L1 when initial steady state location (promptly attach moving contact 13 and attach the distance between the fixed contact 14) of moving contact 13, with guarantee to attach moving contact 13 with attach fixed contact 14 can normally closeds.
Like Fig. 5 and shown in Figure 9, attaches moving contact 13 when discharging stable position and attach discharging between the fixed contact 14 and should when attaching moving contact 13 and attach initially opening between the fixed contact 14 apart from L1 in initial steady state location apart from L11.As shown in Figure 5, when attaching moving contact 13 and be in initial steady state location, initiatively contact 23 and main fixed contact 25 disjunctions, 16 adhesives of magnetic force coupling mechanism.As shown in Figure 9, be in when discharging stable position attaching moving contact 13, initiatively contact 23 and main fixed contact 25 closures, magnetic force coupling mechanism 16 discharges.
Is the operating process of on-state in above-mentioned contactor main body 2 from the disjunction state exchange, attaches moving contact 13, initiatively state and position such as Fig. 5 of each movement parts in contact 23, magnetic force coupling mechanism 16, the position-limit mechanism 18 be to shown in Figure 9.In contactor main body 2 is the control procedure of on-state shown in Figure 9 from disjunction state exchange shown in Figure 5; Attach moving contact 13 and be transformed into the crossover position closed shown in Figure 6 from initial steady state location shown in Figure 5 earlier with attaching fixed contact 14; Initiatively contact 23 and main fixed contact 25 convert closure into by disjunction then; Magnetic force coupling mechanism 16 converts release into by adhesive, attaches moving contact 13 at last and is transformed into the release stable position from closed crossover position.Further specifying the capacitor switching contactor with bistable state current limliting contact of the present invention below in conjunction with Fig. 5 to Fig. 9 is the operating process of on-state by the disjunction state exchange.
At first referring to Fig. 5, contactor main body 2 is in stable disjunction state, and the active contact 23 of contactor main body 2 and the distance between the main fixed contact 25 are for opening apart from L2; Attach moving contact 13 and be in initial steady state location; Attach moving contact 13 and attach distance between the fixed contact 14 for initially opening apart from L1, the distance of attaching between contact support 12 and the cover plate 111 is h, 16 adhesives of magnetic force coupling mechanism; The block 124 and the distance between the boss 114 of position-limit mechanism 18 are D1, and main contact support 22 leaves excess of stroke C.Support 22 from state shown in Figure 5 to drop-down main contact, main contact support 22 drives to be attached contact bottom 15 and moves down, because 16 adhesives of magnetic force coupling mechanism, drives and attaches moving contact 13 and move down so attach contact bottom 15, up to position shown in Figure 6.Then referring to Fig. 6; The active contact 23 of contactor main body 2 and the distance L 21 between the main fixed contact 25 are opened apart from L2 (promptly be in active contact 23 and the distance between the main fixed contact 25 under the stable disjunction state in contactor main body 2, also claim initiatively opening apart from L2 of contact 23, be called for short and open apart from L2) less than shown in Figure 5; Attach moving contact 13 and attach fixed contact 14 closures and be in excessive stable position; The distance of attaching between contact support 12 and the cover plate 111 is L1+h, and 16 adhesives of magnetic force coupling mechanism contact between the block 124 of position-limit mechanism 18 and the boss 114; Attaching contact support 12 with restriction can not move down again, and the excess of stroke of main contact support 22 still remains C.Continue to support 22 from state shown in Figure 6 to drop-down main contact; Owing to contact between block 124 and the boss 114; So it is motionless and remain on excessive stable position to attach moving contact 13, the permanent magnet 161 of magnetic force coupling mechanism 16 with inhale iron 162 and begin to separate, up to position shown in Figure 7.Referring to Fig. 7; Contact closed between the active contact 23 of contactor main body 2 and the main fixed contact 25; Attach moving contact 13 and attach fixed contact 14 and still remain closed and be in excessive stable position; The distance of attaching between contact support 12 and the cover plate 111 still keeps L1+h and since the permanent magnet 161 of magnetic force coupling mechanism 16 with inhale between the iron 162 apart from S1 less than its adhesive critical distance S, so the attraction between permanent magnet 161 and the suction iron 162 is greater than the elastic force of reaction spring 17; Attraction still can make attaches moving contact 13 maintenances and attaches fixed contact 14 closures; Still keep in touch between the block 124 of position-limit mechanism 18 and the boss 114, attaching contact support 12 with restriction can not move down, and main contact supports 22 excess of stroke still to remain C.Continue to support 22 from state shown in Figure 7 then to drop-down main contact; Owing to contact between block 124 and the boss 114; So it is still motionless and remain on excessive stable position to attach moving contact 13; The permanent magnet 161 of magnetic force coupling mechanism 16 strengthens with the distance that suction iron 162 separates, and the excess of stroke of main contact support 22 reduces, up to instantaneous position shown in Figure 8.Again referring to Fig. 8; Still keep in touch closure between the active contact 23 of contactor main body 2 and the main fixed contact 25; Attach moving contact 13 and still remain closed and be in excessive stable position with attaching fixed contact 14, the distance of attaching between contact support 12 and the cover plate 111 still keeps L1+h, and the distance between the permanent magnet 161 of magnetic force coupling mechanism 16 and the suction iron 162 becomes adhesive critical distance S; Still keep in touch between the block 124 of position-limit mechanism 18 and the boss 114; Attaching contact support 12 with restriction can not move down, and main contact support 22 still leaves residue excess of stroke C1, and C1 is less than aforementioned excess of stroke C for the residue excess of stroke.Because the permanent magnet 161 of magnetic force coupling mechanism 16 and the distance of inhaling between the iron 162 are adhesive critical distance S; So at the permanent magnet 161 of this moment and inhale the elastic force that attraction between the iron 162 equals reaction spring 17, this moment also is to attach moving contact 13 to be transformed into the moment that discharges before the stable position by excessive stable position.Continue to support 22 from momentary status shown in Figure 8 at last to drop-down main contact; The permanent magnet 161 of magnetic force coupling mechanism 16 and the distance of inhaling between the iron 162 continue to strengthen; The excess of stroke of main contact support 22 continues to reduce; Because the distance between permanent magnet 161 and the suction iron 162 is greater than adhesive critical distance S; So at the permanent magnet 161 of this moment and inhale attraction between the iron 162 less than the elastic force of reaction spring 17, thus attach moving contact 13 under the elastic force effect of reaction spring 17 past moved back and with attach fixed contact 14 and separate, up to position shown in Figure 9.
In Fig. 9, still keep in touch closure between the active contact 23 of contactor main body 2 and the main fixed contact 25 and be in stable on-state, attach moving contact 13 and attach fixed contact 14 disjunctions and be in the release stable position; Attach moving contact 13 and attach distance L 11 between the fixed contact 14 (promptly discharge apart from) greater than initially opening apart from L1; Attach contact and support 12 to contact, be i.e. h=0,16 releases of magnetic force coupling mechanism with cover plate 111; Permanent magnet 161 and inhale between the iron 162 apart from S3 much larger than adhesive critical distance S shown in Figure 7; The block 124 of position-limit mechanism 18 separates with boss 114, and the distance between block 124 and the boss 114 satisfies D2＞D1, and the excess of stroke of main contact support 22 is used up; Be C=0, main contact support 22 can not move down again.Owing to receiving the control of the operating mechanism (not shown) of contactor main body 2, main contact support 22 is stabilized in position shown in Figure 9; So initiatively contact 23 is stabilized in on-state shown in Figure 9 with main fixed contact 25; And support 12 under the elastic force effect of reaction spring 17, to stablize and contact with cover plate 111 owing to attach contact; Be that reaction spring 17 will attach contact support 12 and be pressed against on the cover plate 111; And magnetic force coupling mechanism 16 is in release condition, stably is limited to the release stable position so attach moving contact 13.
Explain that referring to Fig. 5,9 to Figure 12 the capacitor switching contactor with bistable state current limliting contact of the present invention is converted into the operating process of disjunction state by on-state; Convert into from on-state shown in Figure 9 the control procedure of Figure 12 and disjunction state shown in Figure 5 in contactor main body 2, attach moving contact 13 and be transformed into initial steady state location shown in Figure 5 from release stable position shown in Figure 9.Contactor main body 2 above-mentioned converts into the control procedure of disjunction state from on-state, attaches state and position such as Fig. 9 to Figure 12 and shown in Figure 5 of each movement parts in moving contact 13, active contact 23, magnetic force coupling mechanism 16, the position-limit mechanism 18.Below in conjunction with Fig. 9 to Figure 12 and Fig. 5, further specify the capacitor switching contactor with bistable state current limliting contact of the present invention is converted into the disjunction state by on-state operating process.
Referring to Fig. 9; Upwards push away main contact from state shown in Figure 9 and support 22; Because main contact supports 22 to recover the excess of stroke earlier; So initiatively still keep in touch closure between contact 23 and the main fixed contact 25, suction iron 162 move up with main contact support 22 and to permanent magnet 161 near, up to position shown in Figure 10.Referring to Figure 10, still keep in touch closure between the active contact 23 of contactor main body 2 and the main fixed contact 25, attach moving contact 13 and attach fixed contact 14 disjunctions and be in the release stable position; Attach moving contact 13 and attach distance L 11 between the fixed contact 14 greater than initially opening apart from L1; Attach contact and support 12 to contact, be i.e. h=0,16 releases of magnetic force coupling mechanism with cover plate 111; Permanent magnet 161 and the distance of inhaling between the iron 162 satisfy S2＞S; The block 124 of position-limit mechanism 18 still keeps separating with boss 114, and the distance between block 124 and the boss 114 satisfies D2＞D1, and the excess of stroke of main contact support 22 has returned to C; Continue upwards to push away main contact from state shown in Figure 10 and support 22, because the excess of stroke of main contact support 22 has returned to C, so initiatively contact 23 begins to separate with main fixed contact 25, up to instantaneous position shown in Figure 11.Referring to Figure 11; Separate but the stable disjunction position of no show between the active contact 23 of contactor main body 2 and the main fixed contact 25; Initiatively the distance between contact 23 and the main fixed contact 25 satisfies L22＜L2; The excess of stroke of main contact support 22 still remains C, attaches moving contact 13 and attaches fixed contact 14 disjunctions and be in an unsure state, and attaches moving contact 13 and attaches distance L 11 between the fixed contact 14 greater than initially opening apart from L1; Attach contact support 12 and cover plate 111 unsettled contacts; Be h=0, the permanent magnet 161 of magnetic force coupling mechanism 16 and the distance of inhaling between the iron 162 are adhesive critical distance S and begin transition status that the block 124 of position-limit mechanism 18 and the distance between the boss 114 satisfy D2＞D1.At instantaneous position shown in Figure 11; Because permanent magnet 161 is adhesive critical distance S with the distance of inhaling between the iron 162, promptly the attraction between permanent magnet 161 and the suction iron 162 can overcome the elastic force of reaction spring 17 and order about and attaches moving contact 13 and move to position shown in Figure 12 to closing direction.Referring to Figure 12; The active contact 23 of contactor main body 2 and the distance between the main fixed contact 25 still keep L22＜L2, and the excess of stroke of contact support 22 still remains C, attach moving contact 13 and attach fixed contact 14 still to keep disjunction; But attach moving contact 13 and leave the release stable position; Attach contact support 12 and separate with cover plate 111, magnetic force coupling mechanism 16 converts adhesive into, still is between the block 124 of position-limit mechanism 18 and the boss 114 and separates.In position shown in Figure 12; Continue upwards to push away main contact and support 22, because adhesive between permanent magnet 161 and the suction iron 162 moves up so the promotion that moves up of main contact support 22 attaches contact bottom 15; The promotion suction iron 162 that moves up that attaches contact bottom 15 moves up; Inhale moving up of iron 162 and promote permanent magnet 161 and move up, the moving up of permanent magnet 161 promotes to attach contact support 12 and attaches moving contact 13 and move up, up to state position shown in Figure 5; In state position shown in Figure 5, contactor main body 2 is in stable disjunction state, attaches moving contact 13 and is in initial steady state location.
Moving up and down of main contact support 22 is that existing operating mechanism (not shown) by contactor main body 2 drives, and the location that main contact support 22 is stabilized in disjunction state shown in Figure 5 and on-state shown in Figure 9 respectively also is by the operating mechanism control of contactor main body 2.At permanent magnet 161 and when inhaling distance between the iron 162 less than adhesive critical distance S, the contact bottom 15 that attaches that attaches moving up and down of contact support 12 and be by routine drives and control, receives main contact to support 22 driving and control and attach contact bottom 15.And at permanent magnet 161 and when inhaling distance between the iron 162 greater than adhesive critical distance S, attach contact support 12 and under the driving of reaction spring 17, can only move up.Visible from above-mentioned operating process; Because attaching moving contact 13 has two stable position; So the capacitor switching contactor with bistable current limliting contact of the present invention not only can not appear at the secondary disjunction in the connection process, the fault that the secondary in breaking course is connected; But also each STATEMENT OF FEDERALLY SPONSORED coupling contradiction and random drift two large problems that prior art exists have been solved; The present invention has had benefited from adopting the technical scheme of following optimization for the rational Match between stroke, position relation and variation (motion) characteristic of each STATEMENT OF FEDERALLY SPONSORED.
It at first is the distance of opening of attaching moving contact 13.Because attaching moving contact 13 has two stable position; So attaching moving contact 13 has two and opens distance; One of them is opened apart from initially opening apart from L1 (referring to Fig. 5) when attaching moving contact 13 and be in initial steady state location, and another is opened apart from being in discharging apart from L11 (referring to Fig. 9) when discharging stable position for attaching moving contact 13.Visible from Fig. 5 and Fig. 9; Attach moving contact 13 and attach discharging apart from L11 between the fixed contact 14 greater than attaching moving contact 13 and attaching initially opening between the fixed contact 14 apart from L1; Promptly satisfy L11＞L1, and L11, L1 and to attach moving contact 13 be L11=L1+h from discharging stable position to the relation between the distance h three the initial steady state location.
Next be attach moving contact 13 from discharge stable position to the distance h the initial steady state location, attach moving contact 13 and attach initially opening between the fixed contact 14 apart from opening between L1, active contact 23 and the main fixed contact 25 apart from the relation between the adhesive critical distance S of L2, magnetic force coupling mechanism 16.Referring to Fig. 5, attach moving contact 13 and the operation principle requirement of the closure of attaching fixed contact 14 in the making operation process in order to satisfy prior to the closure of active contact 23 and main fixed contact 25, L1 and L2 must satisfy the condition of L1＜L2.Referring to Figure 11 and Figure 12; To attach moving contact 13 in the breaking operation process and when release stable position shown in Figure 11 moves to position shown in Figure 12, attach moving contact 13 and attach fixed contact 14 and still be in the disjunction state in order to satisfy; Guaranteeing not take place in the breaking operation process fault that secondary is connected, thereby need satisfy the condition that S＜L1+h is S＜L11.In order further to reduce the volume of current limliting sets of contacts 1, get h＜L1, thereby the relation that obtains after the optimization between h, L1, L2, the S is: L1＜L2 and h＜S＜L1+h; Perhaps h＜S＜L1＜L2.
The 3rd is to attach moving contact 13 and attach initially opening apart from opening apart from the relation between distance B 1 three between L2, block 124 and the boss 114 between L1, active contact 23 and the main fixed contact 14 between the fixed contact 14.Referring to Fig. 5 to Fig. 6; For satisfy attach in the making operation process moving contact 13 can be reliable with attach fixed contact 14 and contact closure; Thereby need satisfy the condition of L1＜D1; In order to guarantee that attaching moving contact breaks off after the active contact closure, should satisfy the condition of D1＜L2+C, the span that gets D1 thus is L1＜D1＜L2+C.
According to above-mentioned each parameter relationship formula that provides from three aspects considerations, just can confirm optimum parameters such as L1, L2, S, h, C, D1 at an easy rate, just can confirm the structure of current limliting sets of contacts 1 and contactor main body 2 at an easy rate according to the parameters optimization of confirming.Owing to introduced the h parameter; And optimize relation between each parameter again in order to be greater than or less than; So not only can not constitute the dimension chain of sealing; But also overcome effectively that prior art exists because of the wherein foozle of certain parameter or the random drift of other parameters that characteristic variations causes, thereby can reduce manufacture difficulty and cost greatly, improved reliability of products and stability simultaneously greatly.
Claims (9)
1. capacitor switching contactor with bistable state current limliting contact; Comprise having and be installed in the active contact (23) in the main contact support (22) and be fixedly mounted on the contactor main body (2) of the main fixed contact (25) on the shell block (21) by excess of stroke mode; The resistive conductor group (3) that current limliting sets of contacts (1) and being used for is connected in parallel current limliting sets of contacts (1) and contactor main body (2); Described current limliting sets of contacts (1) comprises and is installed in attaching contact support (12) and attaching contact bottom (15) on the pedestal (11); Attach fixed contact (14) and being installed in of cooperating with its closure/disjunction that are fixed on the pedestal (11) are attached and attach moving contact (13) in the contact support (12); Be arranged on and attach contact support (12) and attach the magnetic force coupling mechanism (16) between the contact bottom (15); Be arranged on the reaction spring (17) and the position-limit mechanism (18) that attach between contact support (12) and the pedestal (11); The pedestal (11) of described current limliting sets of contacts (1) is fixedly mounted on the shell block (21) of contactor main body (2) by compound mode up and down; It attaches, and contact bottom (15) is connected with the main contact support (22) of contactor main body (2) and interlock each other
It is characterized in that:
The moving contact (13) that attaches of described current limliting sets of contacts (1) has an initial steady state location and a release stable position; This release stable position is to be limited the cover plate (111) that attaches on contact support (12), reaction spring (17) and the pedestal (11); And described attach moving contact (13) when being in initial steady state location; The active contact (23) of contactor main body (2) and main fixed contact (25) disjunction, magnetic force coupling mechanism (16) adhesive of current limliting sets of contacts (1); Described attach moving contact (13) and be in when discharging stable position, the active contact (23) of contactor main body (2) and main fixed contact (25) closure, and the magnetic force coupling mechanism (16) of current limliting sets of contacts (1) discharges;
In said initial steady state location; The attaching moving contact (13) and attach to have between the fixed contact (14) and initially open of described current limliting sets of contacts (1) apart from L1; And in said release stable position; Attaching moving contact (13) and attaching to have between the fixed contact (14) of current limliting sets of contacts (1) discharges apart from L11, and in each operation of contactor, the contact that attaches of described current limliting sets of contacts (1) all automaticallyes switch these two different opening between the distance value to the distance opened between (13,14).
2. the capacitor switching contactor with bistable state current limliting contact according to claim 1; It is characterized in that; Described attach moving contact (13) when discharging stable position and attach discharging apart from L11 when attaching moving contact (13) in initial steady state location and attach initially opening apart from L1 between the fixed contact (14) between the fixed contact (14), and this is initially opened apart from L1 less than opening apart from L2 between active contact (23) and the main fixed contact (25) of contactor main body (2) when the stable disjunction state.
3. the capacitor switching contactor with bistable state current limliting contact according to claim 2 is characterized in that,
The magnetic force coupling mechanism (16) of described current limliting sets of contacts (1) comprises permanent magnet (161) and inhales iron (162) that when the attraction between permanent magnet (161) and the suction iron (162) equaled the elastic force of reaction spring (17), the adhesive critical distance between the two was S;
Described attach moving contact (13) and have distance h from discharging stable position to the initial steady state location; And in described initial steady state location; Said distance of attaching between contact support (12) and its cover plate (111) is h; In described release stable position, said distance h of attaching between contact support (12) and the cover plate (111) is zero;
Described distance h, initially open, open apart from L2 and adhesive critical distance S and should meet the following conditions apart from L1:
L1＜L2 and h＜S＜L1+h; Perhaps
h＜S＜L1＜L2。
4. the capacitor switching contactor with bistable state current limliting contact according to claim 1 and 2 is characterized in that:
Described position-limit mechanism (18) comprises block (124) and the boss (114) on the pedestal (11) in the contact support (12), and when attaching moving contact (13) and attaching fixed contact (14) disjunction, block (124) separates with boss (114); After attaching moving contact (13) and attaching fixed contact (14) closure, block (124) contacts with boss (114); And attaching moving contact (13) when being in initial steady state location, the distance between said block (124) and the boss (114) is D1 and attach initially the opening apart from L1, the opening apart from the excess of stroke C of L2, contact support 22 and should meet the following conditions of contact (23) initiatively of moving contact (13): L1＜D1＜L2+C.
5. the capacitor switching contactor with bistable state current limliting contact according to claim 1; It is characterized in that: when described contactor main body (2) is in stable disjunction state; Be arranged on and attach contact support (12) and attach magnetic force coupling mechanism (16) adhesive between the contact bottom (15); Attach contact support (12) and attached contact bottom (15) and limit, attach contact bottom (15) and be connected with main contact support (22) and be defined, make the moving contact (13) that attaches that attaches in the contact support (12) be stabilized in initial steady state location.
6. the capacitor switching contactor with bistable state current limliting contact according to claim 1; It is characterized in that: when described contactor main body (2) is in stable on-state; Being arranged on the magnetic force coupling mechanism (16) that attaches contact support (12) and attach between the contact bottom (15) discharges; Attach contact support (12) under the elastic force effect of reaction spring (17) with pedestal (11) on cover plate (111) contact and be defined, make the moving contact (13) that attaches that attaches in the contact support (12) be stabilized in the release stable position.
7. the capacitor switching contactor with bistable state current limliting contact according to claim 1 is characterized in that: an end of described reaction spring (17) with attach contact support (12) and be connected, the other end of reaction spring (17) is connected with pedestal (11).
8. according to the capacitor switching contactor with bistable state current limliting contact described in the claim 3, it is characterized in that: the permanent magnet (161) of described magnetic force coupling mechanism (16) is arranged on to be attached in the contact support (12), and suction iron (162) is arranged on to be attached on the contact bottom (15).
9. according to the capacitor switching contactor with bistable state current limliting contact described in the claim 3, it is characterized in that: the suction iron of described magnetic force coupling mechanism (16) is arranged on to be attached in the contact support (12), and permanent magnet is arranged on to be attached on the contact bottom (15).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210113720.XA CN102623252B (en) | 2012-01-31 | 2012-04-17 | Capacitive contactor with bistable-state current-limiting contacts |
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| CN201210022040 | 2012-01-31 | ||
| CN201210022040.7 | 2012-01-31 | ||
| CN201210113720.XA CN102623252B (en) | 2012-01-31 | 2012-04-17 | Capacitive contactor with bistable-state current-limiting contacts |
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| CN 201220165033 Withdrawn - After Issue CN202616144U (en) | 2012-01-31 | 2012-04-17 | Capacitor contactor having bistable current-limiting contact |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562822A (en) * | 2018-05-17 | 2018-09-21 | 浙江天正电气股份有限公司 | Switching capacitor contactor resistive conductor detects fixture |
| CN109490762A (en) * | 2017-09-12 | 2019-03-19 | 浙江正泰电器股份有限公司 | The method and apparatus for detecting contactor mirror image contact |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623252B (en) * | 2012-01-31 | 2014-10-15 | 上海诺雅克电气有限公司 | Capacitive contactor with bistable-state current-limiting contacts |
| EP3002769B1 (en) | 2014-10-01 | 2017-06-14 | Siemens Aktiengesellschaft | Integrated circuit breaker |
| CN114628177A (en) * | 2022-03-11 | 2022-06-14 | 厦门山秀阳光科技有限公司 | Isolating switch for preventing zero-breaking fault |
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| CA1149845A (en) * | 1980-03-13 | 1983-07-12 | Helmut Lemmer | Electromagnetically operated switch |
| CN2251794Y (en) * | 1995-11-17 | 1997-04-09 | 天水秦城长城电器厂 | Charging surge arrester for ac contactor |
| CN2708489Y (en) * | 2004-06-25 | 2005-07-06 | 苏州市华中电器有限公司 | Switching capacitor contactor |
| JP2009158179A (en) * | 2007-12-25 | 2009-07-16 | Hitachi Industrial Equipment Systems Co Ltd | Electromagnetic contactor |
| CN201741636U (en) * | 2010-05-17 | 2011-02-09 | 常州市默顿电气有限公司 | Switched capacitor contactor |
| CN202616144U (en) * | 2012-01-31 | 2012-12-19 | 上海诺雅克电气有限公司 | Capacitor contactor having bistable current-limiting contact |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490762A (en) * | 2017-09-12 | 2019-03-19 | 浙江正泰电器股份有限公司 | The method and apparatus for detecting contactor mirror image contact |
| CN109490762B (en) * | 2017-09-12 | 2024-05-14 | 浙江正泰电器股份有限公司 | Method and device for detecting mirror contact of contactor |
| CN108562822A (en) * | 2018-05-17 | 2018-09-21 | 浙江天正电气股份有限公司 | Switching capacitor contactor resistive conductor detects fixture |
| CN108562822B (en) * | 2018-05-17 | 2024-02-20 | 浙江天正电气股份有限公司 | Detection clamp for resistance wire of switching capacitor contactor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN202616144U (en) | 2012-12-19 |
| CN102623252B (en) | 2014-10-15 |
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Application publication date: 20120801 Assignee: ZHEJIANG CHINT ELECTRICS Co.,Ltd. Assignor: SHANGHAI NOARK ELECTRIC Co.,Ltd. Contract record no.: X2021330000593 Denomination of invention: Capacitor contactor with bistable current limiting contact Granted publication date: 20141015 License type: Common License Record date: 20211025 |
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