CN1184655C - Contact for integrated multi-pole power switch with longitudinal magnetic field - Google Patents
Contact for integrated multi-pole power switch with longitudinal magnetic field Download PDFInfo
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- CN1184655C CN1184655C CNB011295546A CN01129554A CN1184655C CN 1184655 C CN1184655 C CN 1184655C CN B011295546 A CNB011295546 A CN B011295546A CN 01129554 A CN01129554 A CN 01129554A CN 1184655 C CN1184655 C CN 1184655C
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Abstract
The present invention relates to a contact for an integrated power switch with a multi-pole longitudinal magnetic field. An arcing component, a conductive component and a magnetic field generating component are arranged in a container of which the upper part is provided with an opening; the conductive component and the magnetic field generating component are mutually matched and are arranged at the lower part of the container, the arcing component is arranged at a top surface formed by forming the conductive component and the magnetic field generating component, the conductive component passes through the center of the container and equally divides the container from top to bottom, and the magnetic field generating component is separated by the conductive component and is arranged in the rest of the position in the container. The contact surface of the present invention can generate the multi-pole longitudinal magnetic field, and thus, the present invention is suitable for an integrated contact for turning on or turning off a vacuum switch tube with heavy current capacity in an arc-extinguish chamber. The present invention belongs to the technical field of an electric appliance.
Description
The present invention relates to a kind of structure of power switch contact, especially a kind of contact surface can produce multipole longitudinal magnetic field, be more suitable for cut-offfing the interior integrated contact of vacuum switch tube arc control device of high current capacity, belongs to technical field of electricity.
Switchgear is a kind of equipment that must use in the circuit, and it plays a part to close closes, cut-offs circuit.Under switch off state, switchgear has very high resistance, so that bear certain voltage; Close under the state in the switch pass, switchgear should have very low resistance, allows rated current to pass through, and does not produce too high temperature.Need in the interrupting process of switch contact to carry out arc extinguishing, so that the contact disjunction is resolute.Existing switchgear has different arc-extinguishing mediums: oil, sulphur hexafluoride, air, semiconductor, vacuum etc.The corresponding construction of switch difference of different arc-extinguishing mediums, performance are also different.Because vacuum switch has less clearance, high proof voltage ability, low arc voltage, high breaking current ability, low electrical wear and high electric life, therefore is widely used in the power circuit.But, prior art, as shown in Figure 1, the core component of vacuum switch tube 7 is the vacuum interrupters 6 in the housing 5.The performance of vacuum interrupter 6 inside contact 1,2 directly determines the performance of vacuum switch tube 7.Contacts of vacuum switch 1,2 rear portions of vacuum switch tube 7 connect moving conductive rod 3 and static conductive rod 4 respectively, and the action that contact 1,2 disconnects is to divide open contact 1,2 by controlling moving conductive rod 3 machineries.During disconnection, the contact area of contact 1,2 is more and more littler, up to contact 1,2 contact point is only arranged, contact resistance increases simultaneously, the temperature in zone is increasing, and up to contact point fusing, evaporation and ionization, metal vapors makes the discharge in the vacuum be maintained, produce vacuum arc, finish the electric disconnection of contact at last.In order to improve the rupture capacity of vacuum switch tube, need apply longitudinal magnetic field to vacuum arc, make vacuum arc remain on state stable and diffusion, electric current can comparatively be evenly distributed in contact surface like this, also can reduce simultaneously the temperature rise of contact surface, avoid a large amount of evaporations of contact material, make arc voltage remain on lower level, reduce the electrical wear of contact.Therefore contact must possess the ability in arcing, conduction, generation magnetic field in the vacuum switch tube arc control device, and technical parameter must satisfy that resistance fusion welding is good, compressive resistance is high, the drop-out current ability big, the requirement of aspects such as the arc resistant ablation property is good, shut off value is low, gas content is low, conductance is high and physical dimension is little, reliability height.At present, the concrete structure of contact is made up of arcing parts, conductive component, magnetic field production part substantially.As shown in Figure 2, arcing parts 11 are arranged on the middle part, adopt copper chromium material, and it has big breaking current connecting-disconnecting function and resistance fusion welding preferably, can produce metal vapors in the moment of cut-offfing, so that keep electric current; Conductive component 12 is provided with a circle of contact body, generally adopts copper product; Magnetic field production part 13 is an induction coil, is arranged on the outside of the body of contact, the still vertical magnetic of horizontal magnetic in the time of no matter, and its magnetic field intensity is lower.During these component-assembled, need under vacuum high-temperature, use silver-copper brazing alloy to carry out soldering, just can link together.Because each modular construction complexity, a soldering often can only be finished the part welding, therefore in reality is made, not only need repeatedly to enter high-temperature vacuum furnace and carry out repeatedly soldering, the contact of the face of weld is not to be absolutely to contact yet, be difficult to ensure the fixing of solder side quality and welding, and have burr of the face of weld etc. inevitably, cause the electric energy of contact globality relatively poor.For above-mentioned reasons, the vacuum switch tube of prior art not only rate of finished products is low, and the method complexity causes cost too high, and the piece electrical performance is undesirable.In addition, the processing of each parts needs the various chromiumcopper materials that use specialty configuration moulding, for mechanical car's milling method complexity of this alloy material.
Also have a kind of product in the prior art, by the exploitation of Dutch HOLEC company, its magnetic field production part 13 has been abandoned original coil form.On the copper chromium arcing parts 11 of contact body, stack setting, and utilize rivet 14 riveted joints from level to level as the electrical pure iron sheet 13 of magnetic field production part 13.Iron plate 13 has the opening 131,132,133 of different sizes, produces magnetic field by electrical pure iron sheet induced current, and concrete structure is shown in Fig. 3,4.The stacking of magnetic field production part 13 iron plates on the copper chromium arcing parts 11 forms from big to small trapezoidal shape from the front view direction, so not only simplified the structure of original contact, and magnetic field intensity improves greatly.The method for welding but even such structure also still has to use, the conductive component 12 that separation could be provided with, magnetic field production part 13 iron plates etc. combine.Because the method for the required use of its structure does not have big change substantially, so still there are many problems in its cost, quality.In addition, because production part 13 iron plates in magnetic field are that the plane stacks, according to screw law, magnetic induction makes progress away after arriving the iron plate opening more from level to level, forms the longitudinal flux line of force, and magnetic resistance is bigger.Having, is eccentric body because of stacking of magnetic field production part 13 iron plates is trapezoidal shape, heat carrier again, and this asymmetric heat carrier is inevitable poor in the instantaneous heat dispersion effect, not only influences the breaking capacity of contact, and whole easy deformation.
Of paramount importance is that existing structure of contact terminal is regardless of style, without exception, its each assembly all is to separate to be provided with, and manufacturing process is various, quality shakiness, performance are not high, just,, need a large amount of resolution element of welding for realizing a kind of electric work energy as early stage separate type electronic device, not only operation increases, and reliability is low, and poor-performing must be that volume is bigger simultaneously.Result for retrieval shows widely, and for many years, the continuous development efforts of the technical staff of countries in the world is to be primarily focused on the shape and material of each parts more, in the never bigger improvement of overall structure of contact.
In addition, remove above-mentioned because the complexity of structure and manufacture method, and be with the cost increase except that crossing, the structure of contact terminal of making prior art also causes the wide variety of materials waste, no matter be the leftover pieces under each parts turnning and milling of traditional structure of contact terminal as shown in Figure 2, or shown in Fig. 3,4, improve in the structure the remaining leftover pieces of component processing such as iron plate and can't rationally be used simultaneously, so also must increase the cost of switching tube.
Also having the important point is that the distribution of contact surface longitudinal magnetic field of prior art is very uneven, and extraneous simultaneously stray magnetic field also has tangible influence to the breaking capacity of contact.The contact of especially big capacity switching tube, its longitudinal magnetic field magnetic force more concentrates on the part, must cause contact breaking capacity under big current conditions poor.This drawback has seriously limited the production of high-capacity vacuum switch pipe always.And in the practical application, along with electric power is used more widely, increase rapidly for the demand of high-capacity vacuum switch pipe, for example: the generator unit requires I
BGreater than 120KA, the control of being transported to electric line of 110KVA also needs to adopt vacuum switch tube as break-up device, and therefore existing structure of contact terminal also is unsuitable for the high-capacity vacuum switch pipe.
Main purpose of the present invention is to provide a kind of contact for integrated multi-pole power switch with longitudinal magnetic field, and integral body is integrated direct package assembly, does not need to carry out soldering and connects, and changes the structure that each isolation of components is provided with in the prior art.
The object of the present invention is to provide a kind of contact for integrated multi-pole power switch with longitudinal magnetic field, its magnetic field intensity is big, and good heat conductivity has high breaking current capacity and long electric life.
Another object of the present invention is to provide a kind of contact for integrated multi-pole power switch with longitudinal magnetic field, the longitudinal magnetic field of its contact is evenly distributed contact surface, is more suitable for having bigger breaking capacity in big capacity switch.
The object of the present invention is achieved like this:
A kind of contact for integrated multi-pole power switch with longitudinal magnetic field, it comprises the column shape container of arcing parts, conductive component, magnetic field production part and an open ports, and described arcing parts, conductive component, magnetic field production part all are arranged in the container that this top has open ports; Conductive component and magnetic field production part cooperatively interact and are arranged at the bottom of container, and the arcing parts are arranged on conductive component and the magnetic field production part is formed on the end face of back formation; The configuration that conductive component and magnetic field production part are equipped with forms whole integrated structure for producing the longitudinal magnetic field configuration.
Described conductive component setting is by the container axis, and perpendicular to the arcing parts, with described open ports container five equilibrium, the magnetic field production part is isolated by conductive component, is arranged on remaining position in the container.
Described conductive component setting is by the container axis, perpendicular to the arcing parts, with container left and right sides five equilibrium.
Described conductive component setting perpendicular to the arcing parts, is divided into two with top with container by the container axis.
Described conductive component and production part forward cross section, magnetic field are trapezoidal, and conductive component and magnetic field production part is trapezoidal involutory mutually.
Described magnetic field production part can be the multi-layer cylinder structure of the above different-diameter cylindrical shell of one deck fit, mutually insulated between each layer wherein, in the multi-layer cylinder at least one deck be layer of soft magnetic material.
Described multi-layer cylinder is a layer of soft magnetic material more than one deck wherein.
Described multi-layer cylinder is layer of soft magnetic material.
Described conductive component is the multi-layer cylinder structure of different-diameter cylindrical shell fit, and the center of cylindrical shell is provided with the cylinder that inserts production part middle part, magnetic field through hole.
Described magnetic field production part multi-layer cylinder equates with the multi-layer cylinder number of plies of conductive component.
Described magnetic field production part is the above lamina of one deck.
Described conductive component is the above lamina of one deck.
Described magnetic field production part layer equates with the number of plies of the multilayer of conductive component.
Described conductive component and magnetic field production part make progress from the bottom, and every layer conductive component area occupied reduces gradually, and corresponding magnetic field production part increases gradually.
Described container can be cup.The container material is the rigidity material that fusing point is higher than inner each parts fusing point.
The material of described container can be fusing point and is higher than 1100 ℃ of stainless steels.
Described arcing parts are copper, chromium powder mixture.
Sheet material or bulk that described arcing parts are the chromiumcopper material.
Described copper material is replaceable to be silver-colored material.
Described conductive component can be the material of conduction, high magnetic resistance and heat conduction.
Described conductive component copper material.
The form of described conductive component can be powder or sheet material or bar or tubing or bulk.
The form of described magnetic field production part part is powder or sheet material or bar or tubing or bulk.
Described magnetic field production part partly or entirely is the soft magnetism material.
Described soft magnetism material is the electrical pure iron material.
The form of described soft magnetism material can be powder or sheet material or bar or tubing or bulk.
According to the technique scheme analysis as can be known, the present invention has following advantage:
1, the technical conceive of integrated structure of the present invention is arranged in the integrated outer package whole integrated structure with each parts of original contact, changed the structure that the prior art isolation of components is provided with fully, compact physical dimension has been dwindled volume, increases water conservancy diversion density.It is for the change of power switch structure of contact terminal and progressive compared with prior art as change and the progress of discrete component in the electronic applications to integrated circuit.
2, the various derivation compound modes of magnetic field production part and conductive component have not only been expanded greatly, and because the outer package container is arranged, therefore the material of on-fixed shape such as some flours also can be used, so the present invention has also expanded the extensive use of various conventional materials on the vacuum switch tube contact greatly.
3, magnetic produces the efficient height, longitudinal magnetic field intensity is very big, and contact surface produces the turnover magnetic line of force repeatedly, the magnetic line of force oneself constitutes closed loop, magnetic field distribution is even, and can avoid the influence of the stray magnetic field in the external world to the contact breaking capacity preferably, thereby control action is in electric arc preferably, make electric arc be in disperse state, breaking capacity is strong.
4, since magnetic field production part and conductive component tangent plane cooperatively interact, not only increased heat transfer efficiency, further improved the breaking capacity of switching tube, also overcome in the prior art the asymmetric deformation that brings of heat carrier to the infringement of contact body, and saved manufactured materials greatly, the parts of each cutting-out all can be complementary with another corresponding components, and production process does not almost have how discarded leftover pieces.
5, choosing of each component materials no longer is adopted as production vacuum tube contact and chromiumcopper material professional production, that have certain proportioning, also shape that need not each component processing moulding is specific, but adopt the section bar such as copper, iron, stainless steel of existing common form, greatly reduce difficulty of processing and manufacturing cost.
6, each modular construction is simple, and processing, installation just can be finished whole assembling by once advancing stove, one-step seal-exhaust method easily, and the qualification rate height.
7, production method does not re-use solderer's preface, has not only saved scolder, and has guaranteed the reliability that each parts connect.
The present invention is described in further detail below in conjunction with accompanying drawing and specific embodiments.
Fig. 1 is existing vacuum switch tube arc control device basic structure schematic diagram;
Fig. 2 is the structural representation of contact in the existing arc control device;
Fig. 3 is the perspective view of existing another kind of contact;
Fig. 4 is a magnetic field shown in Figure 3 production part planar structure schematic diagram;
Fig. 5 is a kind of preferred embodiment perspective view of contact of the present invention;
Fig. 6 is the circuit theory figure of preferred embodiment longitudinal magnetic field shown in Figure 5;
Fig. 7 is provided with the matching relationship structural representation for centre section embodiment illustrated in fig. 5 magnetic field production part and conductive component tubular;
Fig. 8 is Fig. 5, Fig. 6, contact surface longitudinal magnetic field distribution schematic diagram embodiment illustrated in fig. 7;
Fig. 9 is the another kind of preferred embodiment structural representation of contact of the present invention;
Figure 10 is provided with the matching relationship structural representation for centre section embodiment illustrated in fig. 9 magnetic field production part and conductive component stratiform;
Figure 11 is Fig. 9, contact surface longitudinal magnetic field distribution schematic diagram embodiment illustrated in fig. 10.
Main theme of the present invention is each parts of contact that original separation is provided with, and is placed in the container of an outer package, makes contact have integrated overall structure.More specifically conductive component and magnetic field production part are cooperatively interacted and be arranged at the bottom of container, the arcing parts are arranged on conductive component and magnetic field production part and form on the end face that the back forms; The magnetic field production part has the opening that magnetic circuit disconnects, and the configuration form that conductive component and magnetic field production part cooperatively interact can make the surface of contact produce longitudinal magnetic field.Can be cup as the cooperatively interact container of outer package of arcing parts, conductive component and magnetic field production part.The container material is the rigidity material that fusing point is higher than inner each parts fusing point.For example, container can be fusing point and is higher than 1100 ℃ of stainless steels.Because conductive component can be the material of conduction, high magnetic resistance and heat conduction, when adopting fine copper or red copper material, its fusing point is 1083 ℃.Institute thinks that reaching conductive component is in molten condition in high temperature furnace, and the temperature of high temperature furnace should be higher than 1083 ℃, and the fusing point of outer package container just should be higher than 1100 ℃ so, just can satisfy the demand.The magnetic field production part partly or entirely is the soft magnetism material.Electrical pure iron material for example.
Just because of the contact outside shell of an overall package is arranged, the form of arcing parts wherein, magnetic field production part and conductive component also just can be powder or sheet material or bar or tubing or bulk.As long as can producing in contact surface, the version of forming have the magnetic line of force to pass in and out magnetic field longitudinally.
Embodiment 1: referring to Fig. 5,6,7,8, be a kind of preferred embodiment structural representation of the present invention.Specifically arcing parts 84, conductive component 821,822 and the magnetic field production part 831,832 of contact 8 all is arranged in the cup 81 that a top has open ports.Conductive component 821,822 and magnetic field production part 831,832 cooperatively interact and are arranged at the bottom of cup 81, and arcing parts 84 are arranged on conductive component 82 and form on the end face of back formation with magnetic field production part 831,832.The involutory back of magnetic field production part 831,832 and conductive component 821,822 base shape is for meeting the column of cup 81 shapes.Like this as Fig. 6, shown in Figure 8, according to screw law, when conductive component 821,822 energisings, magnetic field production part 831,832 produces magnetic field, contact surface must form the repeatedly longitudinal flux line of force of turnover, just the magnetic line of force oneself constitutes turnover magnetic field closed loop repeatedly by the contact that is oppositely arranged, so the Distribution of Magnetic Field of contact surface is very even, thereby makes contact be more suitable for the disjunction of big electric current.
In the present embodiment, conductive component 821,822 and magnetic field production part 831,832 forward cross sections are trapezoidal, and conductive component 821,822 and magnetic field production part 831,832 is trapezoidal involutory mutually, constitute the column that meets the cup container shapes.
Conductive component 821,822 is provided with by cup 81 centers, and from top to bottom cup about 81 is divided into two halves, and magnetic field production part 831,832 is isolated by conductive component 821,822, is arranged on remaining position in the cup 81.In the present embodiment, conductive component 821,822 concrete forms are the multi-layer cylinder structure of different-diameter cylindrical shell fit, and the center of cylindrical shell is provided with the cylinder that inserts production part middle part, magnetic field through hole.Magnetic field production part 831,832 can be the above different-diameter cylindrical shell of one deck layer by layer between the insulation fit multi-layer cylinder 833 structures.It is layer of soft magnetic material that one deck is wherein arranged in the multi-layer cylinder 833, or is layer of soft magnetic material more than one deck, or all is layer of soft magnetic material, to produce the magnetic field that varying strength requires.Certainly, production part 831,832 multi-layer cylinders in magnetic field equate with the multi-layer cylinder number of plies of conductive component 821,822.Certainly conductive component 821,822 also can be a complete entity.Further, in the contact top side location, the width of conductive component 821,822 can be greater than electromagnetism physical clearance actual between switching tube two contacts staggered relatively, to guarantee the intensity of longitudinal magnetic field between two contacts.
Embodiment 2: conductive component 82 is arranged on the central authorities of cup 81, from top to bottom cup 1 is divided into trisection.Magnetic field production part 83 and the trapezoidal from top to bottom matching relationship that is provided with of conductive component 82 stratiforms.Wherein conductive component 82 stacks for one or more layers layer by layer with magnetic field production part 83, every layer conductive component 82 and 83 mutual amalgamations of magnetic field generating unit, conductive component 82 and magnetic field production part 83 make progress from the bottom, every layer conductive component 82 area occupied reduce gradually, corresponding magnetic field production part 83 increases gradually, the shape of forming after conductive component 82 and the 83 mutual amalgamations of magnetic field production part meets the inner wall shape of cup 81, on the end face after conductive component 82 makes up with magnetic field production part 83 arcing parts 84 is set.Its DISTRIBUTION OF MAGNETIC FIELD is equally according to screw law, when conductive component 82 energisings, magnetic field production part 83 produces magnetic field, contact surface is from the plane, the longitudinal flux line of force that must form to advance for 3 times, 3 times goes out, just the magnetic line of force oneself constitutes the magnetic field closed loop of 3 turnover by the contact that is oppositely arranged, so the Distribution of Magnetic Field of contact surface is more even, powerful, thereby makes contact be more suitable for the disjunction of big electric current.
The material of each parts of the present invention and physical form can be various.For example, conductive component 82 can be the material of conduction, high magnetic resistance and heat conduction, and as copper material, form can be powder or sheet material or bar or tubing or bulk; Magnetic field production part 83 is the soft magnetism material partly or entirely, as the electrical pure iron material.The form of magnetic field production part 83 parts is powder or sheet material or bar or tubing or bulk.The form of soft magnetism material can be powder or sheet material or bar or tubing or bulk.
According to structural design of the present invention, the technology of switch contact production can be reduced to once to be advanced stove, one-step seal-exhaust method and finishes whole assembling, and production method do not re-use solderer's preface, has not only saved scolder, and guaranteed the reliability that each parts connect, and qualification rate height.
Claims (26)
1, a kind of contact for integrated multi-pole power switch with longitudinal magnetic field, it comprises arcing parts, conductive component, magnetic field production part, it is characterized in that: also comprise the column shape container of an open ports, described arcing parts, conductive component, magnetic field production part all are arranged in the container that this top has open ports; Conductive component and magnetic field production part cooperatively interact and are arranged at the bottom of container, and the arcing parts are arranged on conductive component and the magnetic field production part is formed on the end face of back formation; The configuration that conductive component and magnetic field production part are equipped with forms whole integrated structure for producing the longitudinal magnetic field configuration.
2, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 1, it is characterized in that: described conductive component setting is by the container axis, perpendicular to the arcing parts, with described open ports container five equilibrium, the magnetic field production part is isolated by conductive component, is arranged on remaining position in the container.
3, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 2 is characterized in that: described conductive component setting is by the container axis, perpendicular to the arcing parts, with container left and right sides five equilibrium.
4, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 2 is characterized in that: described conductive component setting perpendicular to the arcing parts, is divided into two with top with container by the container axis.
5, according to claim 3 or 4 described contact for integrated multi-pole power switch with longitudinal magnetic field, it is characterized in that: described conductive component and production part forward cross section, magnetic field are trapezoidal, and conductive component and magnetic field production part is trapezoidal involutory mutually.
6, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 1, it is characterized in that: described magnetic field production part can be the multi-layer cylinder structure of the above different-diameter cylindrical shell of one deck fit, mutually insulated between each layer, wherein one deck is a layer of soft magnetic material at least.
7, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 6 is characterized in that: the layer of soft magnetic material in the described multi-layer cylinder is more than one deck.
8, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 6 is characterized in that: described multi-layer cylinder is layer of soft magnetic material.
9, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 1 is characterized in that: described conductive component is the multi-layer cylinder structure of different-diameter cylindrical shell fit, and the center of cylindrical shell is provided with the cylinder that inserts production part middle part, magnetic field through hole.
10, according to claim 6 or 9 described contact for integrated multi-pole power switch with longitudinal magnetic field, it is characterized in that: described magnetic field production part multi-layer cylinder equates with the multi-layer cylinder number of plies of conductive component.
11, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 1 is characterized in that: described magnetic field production part is one or more layers of lamina.
12, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 1 is characterized in that: described conductive component is one or more layers of lamina.
13, according to claim 11 or 12 described contact for integrated multi-pole power switch with longitudinal magnetic field, it is characterized in that: described magnetic field production part layer equates with the number of plies of the multilayer of conductive component.
14, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 13, it is characterized in that: described conductive component and magnetic field production part make progress from the bottom, every layer conductive component area occupied reduces gradually, and corresponding magnetic field production part increases gradually.
15, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 1 is characterized in that: described container can be cup, and material is the rigidity material that fusing point is higher than inner each parts fusing point.
16, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 7 is characterized in that: it is characterized in that: the material of described container can be fusing point and is higher than 1100 ℃ of stainless steels.
17, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 1 is characterized in that: described arcing parts are copper, chromium powder mixture.
18, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 1 is characterized in that: sheet material or bulk that described arcing parts are the chromiumcopper material.
19, according to claim 17 or 18 described contact for integrated multi-pole power switch with longitudinal magnetic field, it is characterized in that: described copper material is replaceable to be silver-colored material.
20, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 1 is characterized in that: described conductive component can be the material of conduction, high magnetic resistance and heat conduction.
21, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 20 is characterized in that: described conductive component copper material.
22, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 1 is characterized in that: the form of described conductive component can be powder or sheet material or bar or tubing or bulk.
23, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 1 is characterized in that: the form of described magnetic field production part part is powder or sheet material or bar or tubing or bulk.
24, according to claim 1 or 23 described contact for integrated multi-pole power switch with longitudinal magnetic field, it is characterized in that: described magnetic field production part partly or entirely is the soft magnetism material.
25, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 24 is characterized in that: described soft magnetism material is the electrical pure iron material.
26, contact for integrated multi-pole power switch with longitudinal magnetic field according to claim 25 is characterized in that: the form of described soft magnetism material can be powder or sheet material or bar or tubing or bulk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011295546A CN1184655C (en) | 2001-06-27 | 2001-06-27 | Contact for integrated multi-pole power switch with longitudinal magnetic field |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011295546A CN1184655C (en) | 2001-06-27 | 2001-06-27 | Contact for integrated multi-pole power switch with longitudinal magnetic field |
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| CN1393901A CN1393901A (en) | 2003-01-29 |
| CN1184655C true CN1184655C (en) | 2005-01-12 |
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| CNB011295546A Expired - Fee Related CN1184655C (en) | 2001-06-27 | 2001-06-27 | Contact for integrated multi-pole power switch with longitudinal magnetic field |
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| CN102881511B (en) * | 2012-09-21 | 2016-04-13 | 西安交通大学 | A kind of have the contact controlling the directed extension movement function of vacuum arc |
| CN111999611B (en) * | 2020-08-11 | 2021-10-15 | 南京航空航天大学 | Test device and method for improving breakdown voltage of vacuum arc-extinguishing chamber |
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