CN201266575Y - Vacuum switch contact - Google Patents
Vacuum switch contact Download PDFInfo
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- CN201266575Y CN201266575Y CNU2008201360907U CN200820136090U CN201266575Y CN 201266575 Y CN201266575 Y CN 201266575Y CN U2008201360907 U CNU2008201360907 U CN U2008201360907U CN 200820136090 U CN200820136090 U CN 200820136090U CN 201266575 Y CN201266575 Y CN 201266575Y
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Abstract
The utility model relates to a vacuum switch contact, comprising conductive parts which extend along the same direction and are adjacent to form contact bodies, and a magnetic conduction part, wherein, the shape of the cross section of the magnetic conduction part is divided into a first region and a second region by a middle line, and the area of the first region is larger than that of the second region. The utility model adopts the technical method that the vacuum switch contact has one end of large area and the other end of small area, thus ensuring that the magnetic field formed by the magnetic conduction part can flow into another contact body as the distance between the two contact bodies is relatively small, providing a vertical magnetic field for arc quenching, and being capable of reducing the probability of reignition when voltage breaks, reducing the arc voltage, realizing effective arc quenching and meeting the requirements of high voltage breaking.
Description
Technical field
The utility model relates to a kind of contacts of vacuum switch, relates in particular to the contact in a kind of vacuum switch tube arc control device, belongs to technical field of electricity.
Background technology
Switchgear is the equipment that must use in the circuit, and it plays a part to close closes, cut-offs circuit.Two contacts in the switchgear can produce electric arc in breaking course, producing arc column from the cathode protection burning is the plasma arc of the conical surface.Especially in high-tension circuit, the electric arc that produces between switch contact is especially strong.
Electric arc can make the temperature of switch raise and the loss switch, and the existence of electric arc can reduce the electric current breaking capacity of contact.Therefore must carry out arc extinguishing in the switching process of switch contact.Use mostly in the present switchgear and carry out arc extinguishing, its corresponding characteristics difference of different arc-extinguishing mediums such as oil, sulphur hexafluoride, air, semiconductor or vacuum etc.Because vacuum switch has less contact gap, higher proof voltage ability, lower arc voltage, higher breaking current ability, lower electrical wear and higher electric life, therefore is widely used in the power circuit.
Generally be provided with in the contact body of existing contacts of vacuum switch in abutting connection with the magnetic conductive part and the conductive component of combination, switch is when disconnecting, the contact area of switchgear two ends contact body reduces gradually, have only a contact point up between contact body, contact resistance increases gradually simultaneously, so the temperature of contact point region raises gradually, the fusing point that is higher than contact point up to temperature, contact point fusing and evaporation ionization, metal vapors makes the discharge in the vacuum be maintained, and produces vacuum arc.At this moment, after the key of breaking current success was the arc current zero passage, contact body gap insulation resume speed was faster than the transient recovery voltage speed between the contact body gap, hit pay dirk with regard to not restriking and cut-off.During the vacuum interrupter drop-out current, the rapid diffusion of the metallic vapour that electric arc is emitted meeting when the arc current zero passage runs into contact body or can condense immediately in the radome surface.Therefore, the metallic vapour density that produces when needing the corresponding contact body size of appropriate design drop-out current, material, form, contact body gap and electric current to cut-off, influencing factors such as charged particle densities.Generally speaking, between contact body, rely on magnetic conductive part to form good longitudinal magnetic field and can reach the effect of quickening extinguishing arc, insulation recovery characteristic behind the very good arc is arranged.But present contacts of vacuum switch is because the restriction of planform often is difficult to form good longitudinal magnetic field and carries out extinguishing arc, and the electric field that is occurred when being difficult to solve the high pressure disjunction is concentrated, the withstand voltage not enough and problems such as possibility is big of restriking.Disjunction for high-tension circuit, prior art can realize the disjunction of 36 kilovoltages, for higher potential circuit, especially 72 kilovolts high pressure, the requirement of effective arc extinguishing when also not existing a kind of contacts of vacuum switch structure to satisfy disjunction at present, this is in the existing vacuum switch technology one of problem to be solved to be arranged.
The utility model content
The purpose of this utility model provides a kind of contacts of vacuum switch, and the possibility of restriking during with the disjunction of reduction voltage reduces arc voltage, realizes effective arc extinguishing, satisfies the requirement of high pressure disjunction.
For achieving the above object, the utility model provides a kind of contacts of vacuum switch, comprise along the equidirectional extension and adjoin each other and form the conductive component and the magnetic conductive part of contact body, wherein, the shape of cross section of described magnetic conductive part is divided into first area and second area by its neutrality line, and the area of described first area is greater than the area of second area.
Particularly, the cross section of contact body is circle or similar round; And the cross section of described contact body is divided into top left region, zone, lower-left, right regions and lower right area by self longitudinal midline and transversal centerline; Described right regions is divided in abutting connection with first right regions of top left region and first right regions, second right regions in addition; Zone, described lower-left is divided in abutting connection with the zone, first lower-left of lower right area and the zone, second lower-left beyond the zone, first lower-left; Described conductive component is arranged in described first right regions, top left region and the zone, second lower-left; Described magnetic conductive part is arranged in zone, described first lower-left, lower right area and second right regions.
And described first right regions and/or zone, described first lower-left are semicircle, crown, the trapezoidal or triangle of circle, and the long limit of described first right regions and described top left region adjacency, the long limit in zone, described first lower-left and described lower right area adjacency.
The cross section of contact body is circle or similar round; And the cross section of described contact body is divided into top left region, zone, lower-left, right regions and lower right area by self longitudinal midline and transversal centerline; Described top left region is divided in abutting connection with first top left region in zone, lower-left and first top left region, second top left region in addition; Zone, described lower-left is divided in abutting connection with the zone, first lower-left of lower right area and the zone, second lower-left beyond the zone, first lower-left; Described right regions is divided in abutting connection with first right regions of top left region and first right regions, second right regions in addition; Described lower right area is divided in abutting connection with first lower right area of right regions and first lower right area, second lower right area in addition; Described conductive component is arranged in described first right regions, second top left region, zone, first lower-left and second lower right area; Described magnetic conductive part is arranged in zone, described first lower-left, second right regions, first top left region and the zone, second lower-left.
And, described first top left region, first right regions, zone, first lower-left and/or first lower right area are semicircle, round crown or trapezoidal, and the long limit of described first top left region and zone, described second lower-left adjacency, the long limit of described first right regions and the described second top left region adjacency, the long limit in zone, described first lower-left and the described second lower right area adjacency, the long limit of described first lower right area and the described second right regions adjacency.
Further, the length on the long limit of described first right regions equals the length of described right regions and described top left region abutment line.
The length on the long limit in zone, described first lower-left equals the length of zone, described lower-left and described lower right area abutment line.
The length on the long limit of described first top left region equals the length of described top left region and zone, described lower-left abutment line.
The length on the long limit of described first lower right area equals the length of described right regions and described lower right area abutment line.
The shape setting in the shape of a spiral of magnetic conductive part in the contact body and magnetic conductive part has an angle between the magnetic conductive part in each cross section of described contact body, shape setting in the shape of a spiral between the magnetic conductive part in promptly described each cross section of contact body.
Preferably, described contact body is made up of folded successively the establishing of several lamellar bodies, and each lamellar body is constituted by conducting strip and magnetic conduction sheet adjacency, and several conducting strips are formed conductive components, and several magnetic conduction sheets are formed magnetic conductive parts.
Further, offer on described conducting strip and the magnetic conduction sheet and make the fixing hole of fixed lever through several lamellar bodies.
Described contact body can also be by several bodies of rod closely in abutting connection with forming, and the body of rod of several electric conducting materials constitutes described conductive component, and the body of rod of several permeability magnetic materials constitutes described magnetic conductive part.
Described contact body also can be by several particles closely in abutting connection with forming, and the particle of several electric conducting materials constitutes described conductive component, and the particle of several permeability magnetic materials constitutes described magnetic conductive part.
Contacts of vacuum switch can also comprise the housing that the shape of shape and described contact body adapts, and is used for ccontaining described contact body.
The utility model provides a kind of contacts of vacuum switch, in the conductive component and magnetic conductive part of forming contact body, the shape of cross section of magnetic conductive part is that an end area is big, little irregularly shaped of one end area, therefore it is strong to form an end magnetic field intensity, the non-uniform magnetic field that one end magnetic field intensity is weak, be provided with by magnetic conductive part antisymmetry in the use two contacts of vacuum switch, when making the magnetic field formation field circuit that the magnetic conductive part of magnetic field that the magnetic conductive part of a contacts of vacuum switch forms and another contacts of vacuum switch forms, between two contacts of vacuum switch, form existing horizontal magnetic field, there are the vertical magnetic field and the magnetic line of force to be the rotating magnetic field of rotating shape again, the possibility of restriking when effectively reducing the voltage disjunction, reduced arc voltage, realize effective arc extinguishing, can satisfy the requirement of high pressure disjunction.
Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.
Description of drawings
Fig. 1 is the cross-sectional view of the utility model contacts of vacuum switch specific embodiment one;
Fig. 2 is the cross-sectional view of the utility model contacts of vacuum switch specific embodiment two;
Fig. 3 is the cross-sectional view of the utility model contacts of vacuum switch specific embodiment three;
Fig. 4 is the cross-sectional view of the utility model contacts of vacuum switch specific embodiment four;
Fig. 5 is the cross-sectional view of the utility model contacts of vacuum switch one embodiment;
Fig. 6 is the cross-sectional view of another embodiment of the utility model contacts of vacuum switch;
Fig. 7 is the cross-sectional view of the utility model contacts of vacuum switch specific embodiment five;
Fig. 8 is the structural representation of the utility model contacts of vacuum switch specific embodiment eight;
Fig. 9 is the cross-sectional view of the utility model contacts of vacuum switch specific embodiment eight;
Figure 10 is the structural representation of the utility model contacts of vacuum switch specific embodiment nine.
Among the figure:
Zone, 10-top left region, 20-lower-left 30-right regions
40-lower right area, 11-the first top left region, 12-the second top left region
Zone, 22-the second lower-left, zone, 21-the first lower-left 31-the first right regions
32-the second right regions, 41-the first lower right area, 42-the second lower right area
50-fixing hole, 60-conductive component, 70-magnetic conductive part
Embodiment
In the technical scheme of the utility model contacts of vacuum switch, contacts of vacuum switch comprises along the equidirectional extension and adjoins each other forms the conductive component and the magnetic conductive part of contact body, magnetic conductive part to be shaped as an end area big, little irregularly shaped of other end area, the shape of cross section that is magnetic conductive part is divided into first area and second area by its neutrality line, and the area of first area is greater than the area of second area.As long as the magnetic conductive part shape of contacts of vacuum switch meets above-mentioned features of shape all within technical conceive of the present utility model.
Contacts of vacuum switch embodiment one
Be illustrated in figure 1 as the cross-sectional view of the utility model contacts of vacuum switch specific embodiment one, this contacts of vacuum switch comprises along the equidirectional extension and adjoins each other forms the conductive component and the magnetic conductive part of contact body, as shown in Figure 1, the shape of cross section of this contact body is circular, and any one cross section is divided into top left region 10, zone, lower-left 20, right regions 30 and lower right area 40 by self longitudinal midline Y and transversal centerline X.Right regions 30 is divided into second right regions 32 that forms with exterior domain in abutting connection with first right regions 31 of top left region 10 and first right regions 31.This zone, lower-left 20 is divided into the zone, second lower-left 22 that forms with exterior domain in abutting connection with the zone 21,21 and first lower-left, zone, first lower-left of lower right area 40.This first right regions 31, top left region 10 and zone, second lower-left 22 are provided with electric conducting material and form conductive component, for example copper metal.This zone, first lower-left 21, lower right area 40 and second right regions 32 are provided with permeability magnetic material and form magnetic conductive part, for example ferrous metal.
In the present embodiment, first right regions 31 and zone, first lower-left 21 are semicircle, and long limit of the diameter of first right regions 31 and top left region 10 adjacency, the length on the long limit of the diameter of first right regions 31 equals the length of right regions 30 and top left region 10 abutment line.Long limit of the diameter in zone, first lower-left 21 and lower right area 40 adjacency, the length on the long limit of the diameter in zone, first lower-left 21 equals the length of zone 20, lower-left and lower right area 40 abutment line, and concrete shape is as shown in Figure 1.Then conductive component and magnetic conductive part have formed the female and male fish shape that adjoins each other and cooperate.
In the process of contacts of vacuum switch work, when aliving, magnetic conductive part can produce the magnetic line of force in conductive component, and the distribution trend of the magnetic line of force is that the bigger end from female and male fish flows into than small end.When using this contacts of vacuum switch, two contact body antisymmetry with spline structure can be provided with, the position opposite of magnetic conductive part, distance between two contact body is less than a half of contact body section girth, then from the bigger end of female and male fish flow into than the magnetic line of force of small end will change into the magnetic conductive part that flows into an other contact body than small end, thus, between the contact surface of two relative contact body, just can form the magnetic line of force of rotation.This scheme based on principle be that the magnetic line of force is always selected the shortest path profile.
Technique scheme is because the structural design of magnetic conductive part makes the magnetic line of force have the trend that flows into another contact body from turning to around the contact body periphery, can between two contact body, form existing horizontal magnetic field, again the rotating magnetic field of longitudinal magnetic field be arranged, and, in the switch disjunction, when the distance between two contact body increased gradually, longitudinal magnetic field still can be maintained.Thereby, adopt the contacts of vacuum switch of said structure design, the longitudinal magnetic field of effective arc extinguishing can be provided, the raising of arc extinguishing ability, the possibility of restriking when helping reducing the voltage disjunction reduces arc voltage, thereby can satisfy the requirement of high pressure disjunction, the technical scheme of present embodiment can reach the ability of disjunction voltage more than 40.5 kilovolts, for example voltage such as 55 kilovolts, 72.5 kilovolts of disjunctions and 110 kilovolts.
In the present embodiment, the contour shape of contact body can have various ways, because the magnetic resistance of contact body inside is much smaller than the magnetic resistance of vacuum environment, so when distance between contact body promptly can realize forming the condition of longitudinal magnetic field less than section girth one half on the two contact body facing surfaces.Two contact body relatively can be from the contact body internal delivery on two contact body facing surfaces than the magnetic line of force of far-end.In concrete the application, contact body can be cylinder, or Rotary-table, or spheroid etc. has the shape of circular cross section arbitrarily, and perhaps, shape of cross section also can be similar round, ellipse etc. for example, then first right regions and first lower-left zone is accordingly shapes such as class semicircle.
Contacts of vacuum switch embodiment two
Be illustrated in figure 2 as the cross-sectional view of the utility model contacts of vacuum switch specific embodiment two, the structure of present embodiment and embodiment one is roughly the same, difference is that being shaped as of zone, first lower-left 21 and first right regions 31 is round crown, and the length limit of first right regions 31 and top left region 10 adjacency, the length limit in zone, first lower-left 21 and lower right area 40 adjacency, as shown in Figure 2.
The contacts of vacuum switch of present embodiment is similar to the contacts of vacuum switch operation principle of embodiment one, the longitudinal magnetic field of effective arc extinguishing can be provided, the raising of arc extinguishing ability, the possibility of restriking when helping reducing the voltage disjunction, reduce arc voltage, thereby can satisfy the requirement of high pressure disjunction, the technical scheme of present embodiment can reach the ability of disjunction voltage more than 40.5 kilovolts, for example voltage such as 55 kilovolts, 72.5 kilovolts of disjunctions and 110 kilovolts.
Contacts of vacuum switch embodiment three
Be illustrated in figure 3 as the cross-sectional view of the utility model contacts of vacuum switch specific embodiment three, the structure of present embodiment and embodiment one is roughly the same, difference is that being shaped as of zone, first lower-left 21 and first right regions 31 is trapezoidal, and the trapezoidal base of first right regions 31, promptly long limit and top left region 10 adjacency, the trapezoidal base in zone, first lower-left 21, promptly long limit and lower right area 40 adjacency, as shown in Figure 3.
The contacts of vacuum switch of present embodiment is similar to the contacts of vacuum switch operation principle of embodiment one, the longitudinal magnetic field of effective arc extinguishing can be provided, the raising of arc extinguishing ability, the possibility of restriking when helping reducing the voltage disjunction, reduce arc voltage, thereby can satisfy the requirement of high pressure disjunction, the technical scheme of present embodiment can reach the ability of disjunction voltage more than 40.5 kilovolts, for example voltage such as 55 kilovolts, 72.5 kilovolts of disjunctions and 110 kilovolts.
Contacts of vacuum switch embodiment four
Be illustrated in figure 4 as the cross-sectional view of the utility model contacts of vacuum switch specific embodiment four, the structure of present embodiment and embodiment one is roughly the same, difference is the triangle that is shaped as of zone, first lower-left 21 and first right regions 31, and the leg-of-mutton base of first right regions 31, promptly long limit and top left region 10 adjacency, the leg-of-mutton base in zone, first lower-left 21, promptly long limit and lower right area 40 adjacency, as shown in Figure 4.
The contacts of vacuum switch of present embodiment is similar to the contacts of vacuum switch operation principle of embodiment one, the longitudinal magnetic field of effective arc extinguishing can be provided, the raising of arc extinguishing ability, the possibility of restriking when helping reducing the voltage disjunction, reduce arc voltage, thereby can satisfy the requirement of high pressure disjunction, the technical scheme of present embodiment can reach the ability of disjunction voltage more than 40.5 kilovolts, for example voltage such as 55 kilovolts, 72.5 kilovolts of disjunctions and 110 kilovolts.
In the technical scheme of the utility model contacts of vacuum switch the various embodiments described above, contacts of vacuum switch comprises along the equidirectional extension and adjoins each other forms the conductive component and the magnetic conductive part of contact body, and first right regions, top left region and zone, second lower-left have formed the shape of cross section of conductive component jointly, and second right regions, lower right area and zone, first lower-left have formed the shape of cross section of magnetic conductive part.The shape that the common ground of magnetic conductive part and conductive component shape of cross section is to be arranged in the conductive component of the same cross section of contact body and the magnetic conductive part cooperation that adjoins each other, and magnetic conductive part to be shaped as an end area big, little irregularly shaped of other end area, the shape of cross section that is magnetic conductive part is by its neutrality line, be divided into first area and second area, the area of first area is greater than the area of second area.So-called neutrality line, it is the characteristic length line that a zone of arbitrary shape has a maximum, this zone can be clipped in therebetween by two parallel lines perpendicular to this characteristic length line, article two, the center line of distance is this regional neutrality line between the parallel lines, as shown in Figure 1, when the cross section of magnetic conductive part was clipped in the middle by two the longest parallel lines in interval, the transversal centerline X of contact body was exactly the neutrality line of magnetic conductive part cross section.Therefore, if the magnetic conductive part shape that meets this features of shape all within technical conceive of the present utility model.For example, the shape in first right regions 31 and zone, first lower-left 21 can also be trapezoidal for polygon or class, as shown in Figure 5 and Figure 6, and its long limit and longitudinal midline adjacency.The length of first right regions 31 and first top left region 11 and longitudinal midline adjacency also can be less than half length of longitudinal midline, preferably greater than the length of 1/4th longitudinal midlines.And the technical solution of the utility model can also be used in combination difform first right regions and first top left region, and for example, first right regions adopts semicircle, and first top left region adopts trapezoidal; First right regions adopts polygon, and first top left region adopts semicircle.The i.e. combination that first right regions and first top left region can above-mentioned arbitrary shapes.
Contacts of vacuum switch of the present utility model, in the conductive component and magnetic conductive part of forming contact body, the shape of cross section of magnetic conductive part is that an end area is big, little irregularly shaped of one end area, therefore it is strong to form an end magnetic field intensity, the non-uniform magnetic field that one end magnetic field intensity is weak, be provided with by magnetic conductive part antisymmetry in the use two contacts of vacuum switch, when making the magnetic field formation field circuit that the magnetic conductive part of magnetic field that the magnetic conductive part of a contacts of vacuum switch forms and another contacts of vacuum switch forms, between two contacts of vacuum switch, form existing horizontal magnetic field, there are the vertical magnetic field and the magnetic line of force to be the rotating magnetic field of rotating shape again, the possibility of restriking when effectively reducing the voltage disjunction, reduced arc voltage, realize effective arc extinguishing, can satisfy the requirement of high pressure disjunction.
Contacts of vacuum switch embodiment five
Be illustrated in figure 7 as the cross-sectional view of the utility model contacts of vacuum switch specific embodiment five, the cross section of the contact body of present embodiment is circular, also can be similar round.This cross section is divided into top left region 10, zone, lower-left 20, right regions 30 and lower right area 40 by self longitudinal midline and transversal centerline.Top left region 10 is divided into again in abutting connection with first top left region 11 in zone, lower-left 20 and first top left region 11, second top left region 12 in addition; Zone, lower-left 20 is divided into the zone, second lower-left 22 in addition, zone, 21 and first lower-left, zone, first lower-left 21 in abutting connection with lower right area 40 again; Right regions 30 is divided into again in abutting connection with first right regions 31 of top left region 10 and first right regions 31, second right regions 32 in addition; Lower right area 40 is divided into again in abutting connection with first lower right area 41 of right regions 30 and first lower right area 41, second lower right area 42 in addition.Conductive component is arranged in first right regions 31, second top left region 12, zone, first lower-left 21 and second lower right area 42.Magnetic conductive part is arranged in zone, first lower-left 21, second right regions 32, first top left region 11 and the zone, second lower-left 22.As shown in Figure 7, first top left region 11, first right regions 31, zone, first lower-left 21 and first lower right area 41 are semicircle.And long limit of the diameter of first top left region 11 and zone, second lower-left 22 adjacency, long limit of the diameter of first right regions 31 and second top left region, 12 adjacency, long limit of the diameter in zone, first lower-left 21 and second lower right area, 42 adjacency, long limit of the diameter of first lower right area 41 and second right regions, 32 adjacency.
The technical scheme of present embodiment has been laid magnetic conductive part and conductive component respectively in contact body, and conductive component and magnetic conductive part in the same cross section have been divided into two parts separately.Principle and aforementioned each embodiment of present embodiment contacts of vacuum switch formation longitudinal magnetic field are similar, and difference is that the distance between two contact body should be less than 1/4th length of contact body section girth.Present embodiment contacts of vacuum switch formed longitudinal magnetic field when being used can effectively play the effect of arc extinguishing, satisfies the requirement of disjunction high-tension circuit.
Contacts of vacuum switch embodiment six
The utility model contacts of vacuum switch specific embodiment six is roughly the same with the foregoing description five, and difference is that being shaped as of first top left region, zone, first lower-left, first right regions and second right regions is round crown.And the length limit of first top left region and zone, second lower-left adjacency, the length limit of first right regions and the second top left region adjacency, the length limit in zone, first lower-left and the second lower right area adjacency, the length limit of first lower right area and the second right regions adjacency.
The contacts of vacuum switch of present embodiment is similar to the contacts of vacuum switch operation principle of embodiment five, the longitudinal magnetic field of effective arc extinguishing can be provided, the raising of arc extinguishing ability, the possibility of restriking when helping reducing the voltage disjunction, reduce arc voltage, thereby can satisfy the requirement of high pressure disjunction, the technical scheme of present embodiment can reach the ability of disjunction voltage more than 40.5 kilovolts, for example voltage such as 55 kilovolts, 72.5 kilovolts of disjunctions and 110 kilovolts.
Contacts of vacuum switch embodiment seven
The utility model contacts of vacuum switch specific embodiment seven is roughly the same with the foregoing description five, and difference is that being shaped as of first top left region, zone, first lower-left, first right regions and second right regions is trapezoidal.And the trapezoidal base of first top left region, promptly long limit and zone, second lower-left adjacency, the trapezoidal base of first right regions, the promptly long limit and the second top left region adjacency, the trapezoidal base in zone, first lower-left, the promptly long limit and the second lower right area adjacency, the trapezoidal base of first lower right area, the promptly long limit and the second right regions adjacency.
The contacts of vacuum switch of present embodiment is similar to the contacts of vacuum switch operation principle of embodiment five, the longitudinal magnetic field of effective arc extinguishing can be provided, the raising of arc extinguishing ability, the possibility of restriking when helping reducing the voltage disjunction, reduce arc voltage, thereby can satisfy the requirement of high pressure disjunction, the technical scheme of present embodiment can reach the ability of disjunction voltage more than 40.5 kilovolts, for example voltage such as 55 kilovolts, 72.5 kilovolts of disjunctions and 110 kilovolts.
Situation with embodiment one～embodiment four is similar, and the shape of first top left region, first right regions, zone, first lower-left and first lower right area is not limited to above-mentioned three kinds of situations, for example can also be polygon, triangle etc.And the long limit of first top left region, first right regions, zone, first lower-left and first lower right area can be less than the length of adjacent two regional abutment line, preferably greater than 1/2nd of the length of abutment line.
In the various embodiments described above of the present utility model, describe the shape of magnetic conductive part and conductive component in each cross section in the contact body in detail, in concrete the application, in the neighbouring two-layer cross section, magnetic conductive part can be over against setting, has an angle, certain angle that promptly staggers between the magnetic conductive part in each cross section of contact body, shape setting in the shape of a spiral between the magnetic conductive part in also can each cross section of contact body.
Contacts of vacuum switch embodiment eight
Be illustrated in figure 8 as the structural representation of the utility model contacts of vacuum switch specific embodiment eight.In the present embodiment, the outline of contact body is a globoid, form by folded successively the establishing of several lamellar bodies, each lamellar body is constituted by conducting strip and magnetic conduction sheet adjacency, several conducting strips are formed conductive component, several magnetic conduction sheets are formed magnetic conductive part, the structural relation of the shape of cross section of conducting strip and magnetic conduction sheet and conductive component wherein and magnetic conductive part can adopt the technical scheme in the various embodiments described above, all lamellar bodies are folded to be located at the outer contour shape that constitutes contact body together, is illustrated in figure 8 as a hemisphere contact body.
The technical scheme of present embodiment is convenient to the manufacturing of contact body, after preparing a plurality of lamellar bodies with easy moulding process, lamellar body can be put into the housing of a corresponding conductive component shape profile or magnetic conductive part shape profile, can feed big electric current generation heat heats, make the lamellar body metal molten, after temperature lowers, just can solidify the conductive component and the magnetic conductive part that form integral body, and form the contact body of one.
For making lamellar body before fusing is solidified, the relative position of conductive component and magnetic conductive part is fixed, can further on conducting strip and magnetic conduction sheet, offer and make the fixing hole 50 of fixed lever through several lamellar bodies, among each lamellasome, as shown in Figure 9, the material of fixed lever can be identical with the conductive component material, for example the copper metal.The quantity of fixing hole and fixed lever is not limited to two, preferably four.
Lamellar body not only can vertically be provided with respect to contact axis as mentioned above, and the setting of also can paralleling to the axis perhaps is provided with at an angle.Be that contact body can be formed by the lamellar body combination in any, be arranged within the metal shell that high temperature melting is in aggregates.
Contacts of vacuum switch embodiment nine
Be the structural representation of the utility model contacts of vacuum switch specific embodiment nine as shown in figure 10.In the present embodiment, conductive component in the contact body and magnetic conductive part are tight in abutting connection with forming by several bodies of rod, the body of rod of several electric conducting materials bears against and constitutes conductive component 60 together, the body of rod of several permeability magnetic materials bears against and constitutes magnetic conductive part 70 together, and all bodies of rod bear against the outer contour shape that together constitutes contact body.
The technical scheme of present embodiment is convenient to the manufacturing of contact body, prepare a plurality of bodies of rod with easy moulding process after, the body of rod can be put into the metal shell of a corresponding conductive component shape profile or magnetic conductive part shape contour shape.Can feed big electric current and produce heat and heat, make body of rod metal molten, when temperature lowers after, just can solidify and form conductive component and magnetic conductive part respectively, and the contact body of composition one.
The body of rod not only can be arranged in parallel with respect to contact axis as mentioned above, also can perhaps be provided with at an angle perpendicular to the axis setting.The body of rod can be straight, also can be crooked, and the shape of cross section of the body of rod can be arbitrary shapes such as circle, rectangle, triangle, can be arranged within the metal shell, and high temperature melting is in aggregates to get final product.
Contacts of vacuum switch embodiment ten
In the utility model contacts of vacuum switch specific embodiment ten, conductive component in the contact body and magnetic conductive part are tight in abutting connection with forming by several particles, the particle of several electric conducting materials bears against and constitutes conductive component together, the particle of several permeability magnetic materials bears against and constitutes magnetic conductive part together, and all particles bear against the outer contour shape that together constitutes contact body.The concrete shape of particle can be shapes such as globoid, class cuboid.
The technical scheme of present embodiment is convenient to the manufacturing of contact body, after preparing a plurality of particles with easy moulding process, grain packing can be gone in the metal shell of a corresponding conductive component shape profile or magnetic conductive part shape contour shape, can also further place spacer in the metal shell with the fixing relative position of magnetic conduction particle and conductive particle.Can feed big electric current and produce heat and heat, make the granular metal fusing, when temperature lowers after, just can solidify and form conductive component and magnetic conductive part respectively, and the contact body of composition one.
It should be noted that at last: above embodiment only in order to the explanation the technical solution of the utility model, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (10)
1, a kind of contacts of vacuum switch, comprise along the equidirectional extension and adjoin each other and form the conductive component and the magnetic conductive part of contact body, it is characterized in that: the shape of cross section of described magnetic conductive part is divided into first area and second area by its neutrality line, and the area of described first area is greater than the area of second area.
2, contacts of vacuum switch according to claim 1 is characterized in that: the cross section of contact body is circle or similar round; And the cross section of described contact body is divided into top left region, zone, lower-left, right regions and lower right area by self longitudinal midline and transversal centerline; Described right regions is divided in abutting connection with first right regions of top left region and first right regions, second right regions in addition; Zone, described lower-left is divided in abutting connection with the zone, first lower-left of lower right area and the zone, second lower-left beyond the zone, first lower-left; Described conductive component is arranged in described first right regions, top left region and the zone, second lower-left; Described magnetic conductive part is arranged in zone, described first lower-left, lower right area and second right regions.
3, contacts of vacuum switch according to claim 2, it is characterized in that: described first right regions and/or zone, described first lower-left are semicircle, crown, the trapezoidal or triangle of circle, and the long limit of described first right regions and described top left region adjacency, the long limit in zone, described first lower-left and described lower right area adjacency.
4, contacts of vacuum switch according to claim 1 is characterized in that: the cross section of contact body is circle or similar round; And the cross section of described contact body is divided into top left region, zone, lower-left, right regions and lower right area by self longitudinal midline and transversal centerline; Described top left region is divided in abutting connection with first top left region in zone, lower-left and first top left region, second top left region in addition; Zone, described lower-left is divided in abutting connection with the zone, first lower-left of lower right area and the zone, second lower-left beyond the zone, first lower-left; Described right regions is divided in abutting connection with first right regions of top left region and first right regions, second right regions in addition; Described lower right area is divided in abutting connection with first lower right area of right regions and first lower right area, second lower right area in addition; Described conductive component is arranged in described first right regions, second top left region, zone, first lower-left and second lower right area; Described magnetic conductive part is arranged in zone, described first lower-left, second right regions, first top left region and the zone, second lower-left.
5, contacts of vacuum switch according to claim 4, it is characterized in that: described first top left region, first right regions, zone, first lower-left and/or first lower right area are for semicircle, round crown or trapezoidal, and the long limit of described first top left region and zone, described second lower-left adjacency, the long limit of described first right regions and the described second top left region adjacency, the long limit in zone, described first lower-left and the described second lower right area adjacency, the long limit of described first lower right area and the described second right regions adjacency.
6, according to the described arbitrary contacts of vacuum switch of claim 1～5, it is characterized in that: have an angle between the magnetic conductive part in each cross section of described contact body, the magnetic conductive part shape setting in the shape of a spiral in promptly described each cross section of contact body.
7, contacts of vacuum switch according to claim 1, it is characterized in that: described contact body is made up of folded successively the establishing of several lamellar bodies, each lamellar body is constituted by conducting strip and magnetic conduction sheet adjacency, and several conducting strips are formed conductive components, and several magnetic conduction sheets are formed magnetic conductive parts.
8, contacts of vacuum switch according to claim 7 is characterized in that: offer on described conducting strip and the magnetic conduction sheet and make the fixing hole of fixed lever through several lamellar bodies.
9, contacts of vacuum switch according to claim 1, it is characterized in that: described contact body is tight in abutting connection with forming by several bodies of rod or particle, the body of rod of several electric conducting materials or particle constitute described conductive component, and the body of rod of several permeability magnetic materials or particle constitute described magnetic conductive part.
10, according to claim 7 or 8 or 9 described contacts of vacuum switch, it is characterized in that: also comprise the housing that the shape of shape and described contact body adapts, be used for ccontaining described contact body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201360907U CN201266575Y (en) | 2008-09-28 | 2008-09-28 | Vacuum switch contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201360907U CN201266575Y (en) | 2008-09-28 | 2008-09-28 | Vacuum switch contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201266575Y true CN201266575Y (en) | 2009-07-01 |
Family
ID=40832950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201360907U Expired - Fee Related CN201266575Y (en) | 2008-09-28 | 2008-09-28 | Vacuum switch contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201266575Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881511A (en) * | 2012-09-21 | 2013-01-16 | 西安交通大学 | Contact with function of controlling directional extension movement of vacuum arc |
-
2008
- 2008-09-28 CN CNU2008201360907U patent/CN201266575Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881511A (en) * | 2012-09-21 | 2013-01-16 | 西安交通大学 | Contact with function of controlling directional extension movement of vacuum arc |
| 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 |
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| DD01 | Delivery of document by public notice |
Addressee: Han Yujie Document name: Notification to Pay the Fees |
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Granted publication date: 20090701 Termination date: 20110928 |