CN104332345A - Ultra high speed mechanical switch, switch fracture thereof and switch contacts thereof - Google Patents
Ultra high speed mechanical switch, switch fracture thereof and switch contacts thereof Download PDFInfo
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- CN104332345A CN104332345A CN201410547898.4A CN201410547898A CN104332345A CN 104332345 A CN104332345 A CN 104332345A CN 201410547898 A CN201410547898 A CN 201410547898A CN 104332345 A CN104332345 A CN 104332345A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
- H01H1/10—Laminated contacts with divided contact surface
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
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Abstract
The invention provides an ultra high speed mechanical switch, a switch fracture thereof and switch contacts thereof. The ultra high speed mechanical switch comprises a shell which is internally provided with a first switch contact and a second switch contact. The shell is also provided with an operating mechanism for driving opening and closing. The first switch contact and a second switch contact are orderly provided with conductive metal pieces with intervals along a movement direction. Each two adjacent conductive metal pieces are mutually insulated. The conductive metal pieces have span length which satisfies the following condition that in a closing position, the conductive metal piece on the first switch contact is connected to across two adjacent conductive metal pieces on a matched second switch contact orderly and the switch-on of the first switch contact and the second switch contact is realized, in an opening position, at least one end of the conductive metal piece on the first switch contact is at the interval position between two adjacent conductive metal pieces on the matched second switch contact, and the switch-off of the first switch contact and the second switch contact is realized. The switch-on and switch-off time of the ultra high speed mechanical switch is short, and a user requirement can be satisfied.
Description
Technical field
The present invention relates to high-voltage direct-current transmission system field, particularly relate to a kind of ultrahigh speed mechanical switch and switch fracture thereof and switch contact thereof.
Background technology
Multi-terminal HVDC transmission based on Technology of HVDC based Voltage Source Converter is more and more applied in countries and regions such as Europe, North America, China, although existing several multi-terminal direct current transmission system has dropped into operation in the world at present, but owing to lacking DC circuit breaker, the reliability of multi-terminal high-voltage direct current transportation, flexibility, continuity are very restricted, it is applied and causes serious hindrance, also great impact is brought on the structure of following direct current network.The shortage of high voltage DC breaker has become affects the bottleneck problem that the world builds following direct current network, and its development work is extremely urgent.
When current flexible direct current and multi-terminal direct current transmission system break down, very large short circuit current can be produced, and fault current rises quickly, needs DC circuit breaker to complete within the extremely short time and cut-offs.Be the 320kV DC side electric current rate of climb with regard to electric pressure be 3.5kA/ms, assuming that current value is 2kA on normal working line, short circuit current after 2ms on circuit can reach 9kA, namely the high voltage DC breaker of an energy beginning 9kA electric current must quick acting within the time of 2ms, cuts off electric current.Existing breaker vacuum arc control device can only accomplish below 126kV grade, if meet more than 200kV grade, the series connection of multiple vacuum interrupter just must can reach and cut-off object, like this to multiple vacuum interrupters of series connection on the sync rates controlling the beginning, there is higher requirement.More than the 200kV grade single-break circuit breaker of technology maturation, sulphur hexafluoride arc control device are only had to satisfy condition, and sulphur hexafluoride arc control device also exist stroke is long, switch off time is longer problem, the sulfur hexafluoride breaker stroke of current routine is more than 200 millimeters, switch off time is a few tens of milliseconds, does not reach the branch wire time requirement of ultrahigh speed switch far away.
Summary of the invention
The object of the present invention is to provide the ultrahigh speed mechanical switch that a kind of branch wire time is shorter; Meanwhile, the present invention also provides a kind of switch fracture being applicable to this ultrahigh speed mechanical switch; Present invention also offers a kind of switch contact being applicable to this ultrahigh speed switch.
Ultrahigh speed mechanical switch of the present invention adopts following technical scheme:
A kind of ultrahigh speed mechanical switch, comprise insulation shell, described insulation shell inside is provided with switch fracture, described switch fracture comprises the first switch contact and second switch contact, be provided with in described insulation shell for driving first, the operating mechanism of second switch Contact Breaking/Making Operations lock, close a floodgate time first, second switch contact is all in closing position, when separating brake first, second switch contact is all in open position, first, second switch contact is interval with conducting metal part successively along the direction of motion, interval location place insulation often between adjacent two conducting metal parts, described conducting metal part has cross-over connection length, this cross-over connection length makes satisfied two conditions: first, when closing position, adjacent two conducting metal parts on the second switch contact of the conducting metal part on the first switch contact cross-over connection and its adaptation successively also realize first, the conducting of second switch contact, the second, when open position, the interval location place between adjacent two the conducting metal parts on the second switch contact of its adaptation of at least one end of the conducting metal part on the first switch contact also realizes cut-offfing of first, second switch contact.
Conducting metal part on first, second switch contact described is all insulated successively by insulated connecting piece and separates, and described second switch contact has to coincide with the outer peripheral face of the first switch contact and coordinates and insert for the first switch contact and realize the spliced eye of divide-shut brake in the relative movement of contact axis.
Conducting metal part on first, second switch contact described and insulated connecting piece are circular tube shaped, and the first switch contact is identical with the structure of the conducting metal part on second switch contact, first switch contact is identical with the insulated connecting piece structure on second switch contact, and the length of conducting metal part is all greater than the length of insulated connecting piece.
Switch fracture of the present invention adopts following technical scheme:
A kind of switch fracture, comprise the first switch contact and second switch contact, first, second switch contact under the driving of corresponding operating mechanism relatively near or away from realization close a floodgate or separating brake, close a floodgate time first, second switch contact is all in closing position, when separating brake first, second switch contact is all in open position, first, second switch contact is interval with conducting metal part successively along the direction of motion, interval location place insulation often between adjacent two conducting metal parts, described conducting metal part has cross-over connection length, this cross-over connection length makes satisfied two conditions: first, when closing position, adjacent two conducting metal parts on the second switch contact of the conducting metal part on the first switch contact cross-over connection and its adaptation successively also realize first, the conducting of second switch contact, the second, when open position, the interval location place between adjacent two the conducting metal parts on the second switch contact of its adaptation of at least one end of the conducting metal part on the first switch contact also realizes cut-offfing of first, second switch contact.
Conducting metal part on first, second switch contact described is all insulated successively by insulated connecting piece and separates, and described second switch contact has to coincide with the outer peripheral face of the first switch contact and coordinates and insert for the first switch contact and realize the spliced eye of divide-shut brake in the relative movement of contact axis.
Conducting metal part on first, second switch contact described and insulated connecting piece are circular tube shaped, and the first switch contact is identical with the structure of the conducting metal part on second switch contact, first switch contact is identical with the insulated connecting piece structure on second switch contact, and the length of conducting metal part is all greater than the length of insulated connecting piece.
Switch contact of the present invention adopts following technical scheme:
A kind of switch contact, comprise contact body, described contact body is interval with conducting metal part successively along moving, interval location place insulation often between adjacent two conducting metal parts, described conducting metal part has cross-over connection length, this cross-over connection length meets two conditions: the first, and when closing position, the conducting metal part in this contact body can adjacent two conducting metal parts in the contact body of cross-over connection and this contact body adaptation; The second, when open position, the interval location place between adjacent two the conducting metal parts in the contact body of its adaptation of at least one end of the conducting metal part in this contact body.
Conducting metal part in described contact body is by insulated connecting piece insulation gap successively, and described conducting metal part and insulated connecting piece are tubulose.
Each conducting metal part structure in described contact body is all identical, and each insulated connecting piece structure in described contact body is all identical, and the length of conducting metal part is greater than the length of insulated connecting piece.
The switch contact of ultrahigh speed mechanical switch of the present invention is interval with conducting metal part successively along the direction of motion, interval location place insulation often between adjacent two conducting metal parts, conducting metal part has cross-over connection length, this cross-over connection length makes satisfied two conditions: first, when closing position, adjacent two the conducting metal parts on the second switch contact of the conducting metal part on the first switch contact cross-over connection and its adaptation successively also realize the conducting of first, second switch contact; The second, when open position, the interval location place between adjacent two the conducting metal parts on the second switch contact of its adaptation of at least one end of the conducting metal part on the first switch contact also realizes cut-offfing of first, second switch contact.This switch of the present invention in use, two switch contacts close to each other or away from, when conducting metal part axial location on switch contact is interlaced, conducting metal part on first switch contact and adjacent two the conducting metal parts cross-over connection on corresponding second switch contact, so by the cross-over connection successively of each conducting metal part, make to form through-flow loop between two switch contacts, can realize closing a floodgate, during interval location between two the conducting metal parts on second switch contact of at least one end of the conducting metal part on the first switch contact, insulate between every two adjacent conducting metal parts and separate, through-flow loop can not be formed, now be separating brake, this divide-shut brake principle and construction of switch make two switch contacts only need move extremely short distance, even if the one end of the conducting metal part that one end of the conducting metal part on the first switch contact is left or contacted on second switch contact can realize separating brake or combined floodgate, divide-shut brake stroke is shorter, divide-shut brake required time is also shorter.
Further, conducting metal part on first, second switch contact is all insulated successively by insulated connecting piece and separates, conducting metal part connects the intensity improving whole contact by insulated connecting piece interval, first switch contact is adaptive by the spliced eye on outer peripheral face and second switch contact, two contact coaxial cooperation, improve the stability of contact when divide-shut brake moves.
Further, the conducting metal part of second switch pull bar and insulated connecting piece are round tube shape structure, significantly reduce the weight of switch contact, when the actuating force that operating mechanism provides is limited, the maximum acceleration of motion improving switch contact, decreases branch wire time, simultaneously, tubular structure makes the conductive contact surfaces of contact be the face of cylinder, and flow area is comparatively large, because the electric field of through-flow generation is also more stable and even.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of a kind of ultrahigh speed mechanical switch of the present invention;
Fig. 2 is the enlarged drawing of repulsion operating mechanism I in Fig. 1;
Fig. 3 is the structural representation of the first switch lever in Fig. 1;
Fig. 4 is the structural representation of second switch pull bar in Fig. 1;
The schematic diagram of switch incision position when Fig. 5 is open position;
The schematic diagram of switch incision position when Fig. 6 is closing position;
The schematic diagram of switch incision position when Fig. 7 is the open position of embodiment two;
The schematic diagram of switch incision position when Fig. 8 is the closing position of embodiment three;
The schematic diagram of switch incision position when Fig. 9 is the open position of embodiment three.
Embodiment
The embodiment of a kind of ultrahigh speed mechanical switch of the present invention: as shown in figures 1 to 6, comprise the insulating cylinder body 1 of sealing, high pressure sulfur hexafluoride is filled with in the inner space C of insulating cylinder body 1, the two ends of insulating cylinder body 1 respectively relative spacing are sealedly connected with the identical repulsion operating mechanism of structure I and III, repulsion operating mechanism I and III is connected with the switch lever 191 and 192 that extends along insulating cylinder body 1 axis direction respectively and the two ends close to each other of switch lever 191 and 192 are respectively equipped with and cut-off contact, the periphery wall of insulating cylinder body 1 is sealedly connected with respectively the first conducting end A and the second conducting end B, first conducting end A and the second conducting end B was positioned at the same plane of insulating cylinder body axis and was located at the both sides of insulating cylinder body 1 respectively, first conducting end A and the second conducting end B conduct electricity be connected with the contacts that cut-offs in switch lever 191 and 192 respectively, repulsion operating mechanism I and III respectively driving switch pull bar 191 and 192 relative motion realizes divide-shut brake.
The concrete structure of the repulsion operating mechanism I of the embodiment of the present invention as shown in Figure 2, comprise the shackle rod 19 along insulating cylinder body Axis Extension, the right-hand member of shackle rod 19 is coaxially fixedly connected with switch lever 191, shackle rod 19 is fixed with repulsion dish 90, repulsion dish 90 place plane is vertical with shackle rod 19, the left and right sides of repulsion dish 90 is provided with two collets 61 respectively relatively, 62, collets 61, 62 structures are identical, collets 61, be respectively equipped with on 62 opening relatively and opening all towards the groove of repulsion dish 90, collets 61, the periphery of the groove on 62 and repulsion dish 90 coincide and the bottom land of groove is installed with the first coil 91 and the second coil 92 respectively, first, second coil 91, the external diameter of 92 is identical with the external diameter of repulsion dish 90 and identical with the groove footpath of groove, first, second coil 91, 92 is all parallel with repulsion dish 90 and be positioned at the both sides of repulsion dish 90, collets 61, on the cell wall of the close bottom land of the groove of 62, circumference is evenly equipped with the radial through hole 610 extended, all through holes are positioned at the same periphery perpendicular to axis, the two ends, left and right of shackle rod 19 are each passed through first, second coil 91, 92 and collets 61, 62, shackle rod 19 and first, second coil 91, 92 and collets 61, 62 are slidably matched, collets 61, the sealing ring 600 for sealing is provided with in the hole be slidably matched with shackle rod 19 of 62, collets 61, 62 openings relatively and be fixedly mounted in metal fixed muffle 21, collets 61, 62 relative away from two ends outer peripheral face on be respectively equipped with outer convex edge, these two evaginations are diametrically equal and equal the diameter of bore of fixed muffle 21, at collets 61, between two outer convex edges of 62, collets 61, there is between the outer peripheral face of 62 and the internal face of fixed muffle 21 certain flow channel for buffer medium circulation, the groove of two collets forms an insulation cavity, fixed muffle 21 right-hand member has at the bottom of the cylinder of block collets 61, left side opening part has the outward flange for connecting, the left side openend of fixed muffle 21 is connected with metal holder 4, the tubular that holder 4 extends for left and right, and its two ends are respectively equipped with adpting flange 41, 42, adpting flange 41 to be connected with the outward flange of fixed muffle 21 by screw and the flange face top of adpting flange 41 is pressed in the left side of collets 62, cooperatively interact collets 61 at the bottom of adpting flange 41 and the right side cylinder of fixed muffle 21, 62 are fixed together, first, second coil 91, 92 and collets 61, the sidewall of 62 jointly encloses and forms cushion chamber 7, the two ends, left and right of shackle rod 19 are stretched out respectively to seal at the bottom of the flange face of holder 4 and the cylinder of fixed muffle 21 and with the centre bore at the bottom of flange face and cylinder and are slidably matched, repulsion dish 90 fixing on shackle rod 19 can at collets 61, in the cushion chamber 7 of 62 pairs of synthesis, left and right reciprocatingly slides and realizes divide-shut brake, the circumference barrel of fixed muffle 21 is evenly provided with strip hole 211 and in grid-like, it should be noted that, in use fixed muffle 21 be located at one sealing be full of in the space of gases at high pressure, gases at high pressure can be full of buffering cavity by strip hole 211, namely buffer medium is gases at high pressure, strip hole 211 can be discharged in the outside seal space of fixed muffle after can also make the gas in cushion chamber 7 be discharged by through hole when repulsion dish moves simultaneously, certainly, in other embodiments, the barrel of fixed muffle can be offered the hole of other shapes or other arrangement modes, or the barrel not perforate of fixed muffle, now, the damping through hole of the repulsion dish direction of motion side gas of discharging can enter cushion chamber by flow channel from the damping hole of repulsion dish direction of motion side dorsad.In other embodiments, buffer medium also can adopt other media, and as hydraulic pressure wet goods, now damping through hole needs to be communicated with hydraulic pressure cargo tank.Evenly be provided with elongated hole 212 around shackle rod 19 at the bottom of the right side cylinder of fixed muffle 21, and at the bottom of cylinder on be also provided with the wire hole of wire 101 outlet for being connected with first, second coil 91,92, reduce the weight of whole device by arranging elongated hole 212.
The end that shackle rod 19 stretches out the adpting flange 41 of holder 4 is provided with jacking block 18, jacking block 18 is symmetrical with downward-extension on shackle rod 19 perpendicular to shackle rod 19, holder 4 sidewall is provided with divide-shut brake holding structure 5, directly being fixed on holder by divide-shut brake maintaining body makes structure simpler, certainly, in other embodiments, divide-shut brake maintaining body can also be fixed on other fixtures.Divide-shut brake maintaining body 5 comprise be symmetrically set in holder 4 up and down sidewall on two spacing collars 50, the cylinder heart and the jacking block 18 of two spacing collars 50 are positioned at same plane, the openend of two spacing collars 50 is concordant with the internal face of tubular holder 4, limit spring 51 is respectively installed with in two spacing collars 50, the periphery of limit spring 51 coincide with the endoporus of spacing collar 50 and coordinates, avoid limit spring at sleeve diameter to skew, in spacing collar 50, also slidable fit has slide block 52, limit spring at the bottom of the cylinder of slide block 52 and spacing collar 50 between, one end face top of two slide blocks 52 is pressed in one end of limit spring 51, the other end is hinged with the two ends up and down of jacking block 18 respectively by contiguous block 17, when shackle rod 19 left and right horizontal moves, upper and lower two slide blocks 52 slide up and down respectively and extrude and loosen the limit spring 51 in upper and lower two spacing collars 50, at the bottom of the cylinder of spacing collar 50, adjusting bolt 53 is also housed, adjusting bolt 53 and the screwed hole threaded engagement at the bottom of regulating sleeve 50, one end at the bottom of adjusting bolt 53 stretches into tin is connected with and regulates pressing plate 54, pressing plate 54 top is regulated to be pressed in the end of limit spring 51, length at the bottom of adjustment adjusting bolt 53 stretches into tin can realize the adjustment to limit spring 51 length.
The flange face of the adpting flange 41 of holder 4 is provided with first gear stops 122 in the side that shackle rod 19 stretches out, first gear stops 122 has two and is symmetrically set in the both sides up and down of shackle rod 19 and is positioned at the right side of jacking block 18, upper and lower two first gear stops 122 correspond respectively to the two ends up and down of jacking block 18, the highest distance position that first gear stops 122 moves right for limiting block jacking block 18 when shackle rod 19 moves right, namely close a floodgate stroke; The endoporus center of holder 4 is also provided with second gear stops 121, and second gear stops 121 is positioned at the left side of jacking block 18, the maximum distance that second gear stops 121 is moved to the left for the spacing jacking block 18 of block when shackle rod 19 is moved to the left, i.e. separating brake stroke.The adpting flange 42 of holder 4 is connected with metal cover board 3, cover plate 3 is connected by screw binding post 110, in binding post 110, injection moulding is enclosed with the wire 100 be connected with the pulse power 10, the pulse power 10 is fixedly located at the left side of binding post 110, the one end pulse power 10 being located at metal holder 4 is conducive to reducing circuit induction reactance, improve energy conversion efficiency, make whole mechanism structure compacter simultaneously, certainly, in other embodiments, consider that other practical factors suitably can adjust the installation site of the pulse power.Wire 100 is directly connected with two first, second coils 91,92, and conductive track can be made so the shortest, avoids the resistance that produces because wire is long and inductance paired pulses electric current to have an impact.
The switch fracture II of ultrahigh speed mechanical switch embodiment of the present invention comprises the first switch lever 191 and second switch pull bar 192, the structure of the first switch lever 191 as shown in Figure 3, comprise the connecting portion 1911 for being connected with the drive link of repulsion operating mechanism I, connecting portion 1911 is coaxially connected with insulated connecting rod 1912, connecting valve contact on two insulated connecting rods 1912, switch contact is coaxially connected with insulated connecting rod 1912, switch contact is connected to form at interval successively by five sections of conductive metal pipes and four sections of insulation tube connectors, tubular structure is used to significantly reduce the weight of switch contact, the divide-shut brake acceleration of motion of switch lever is substantially increased under certain divide-shut brake actuating force, further reduce branch wire time, certainly, in other embodiments, conductive metal pipe and insulation tube connector can be replaced by solid cylindrical conductive metalwork and solid cylindrical insulated connecting piece difference correspondence, the conducting metal part of the switch contact in the first switch lever and the concrete quantity of insulated connecting piece also can design alternatives as required.Five sections of conductive metal pipe diameters are identical, four sections of insulation tube connector diameters are identical, the length of five sections of conductive metal pipes is all greater than the length of four sections of insulation tube connectors, the right-hand member of insulated connecting rod 1912 is connected with the left end of conductive metal pipe 1913, the right-hand member of 1913 connects other conductive metal pipes and insulation tube connector, successively as the annexation of insulate in figure tube connector 1914 and conductive metal pipe 1915, the structure of second switch pull bar 192 as shown in Figure 4, the structure of second switch pull bar 192 is corresponding with the first switch lever 191, comprise the connecting portion 1921 for being connected with the drive link of repulsion operating mechanism III, connecting portion 1921 is coaxially connected with insulated connecting rod 1922, two insulated connecting rods 1922 are connected with switch contact, switch contact is coaxially connected with insulated connecting rod 1922, switch contact is connected at interval successively by four sections of conductive metal pipes and three sections of insulation tube connectors, identical, in other embodiments, the conducting metal part of the switch contact in the first switch lever and the concrete quantity of insulated connecting piece also can design alternatives as required.These conductive metal pipes on second switch pull bar are identical with the tube connector that insulate with the conductive metal pipe in the first switch lever with the shape of insulation tube connector, the left end of insulated connecting rod 1922 is connected with the right-hand member of conductive metal pipe 1923, the left end of 1923 connects other conductive metal pipes and insulation tube connector successively, as in figure 1924,1925 and 1926 annexation; The internal diameter of the metal guide fulgurite wherein on second switch pull bar 192 just equals the external diameter of the metal guide fulgurite in the first switch lever 191, and the switch contact in the first switch lever 191 just can plug together in the switch contact of second switch pull bar 192.
In embodiments of the invention, conductive metal pipe 1913 in first switch lever 191 conducts electricity with the pull bar Connection Block 4a of the first conducting end A and is connected, pull bar Connection Block 4a has the joint sleeve extended along switch lever axis direction and the connectivity port be vertical in the middle part of joint sleeve, the two ends of joint sleeve are respectively equipped with shading ring 5a, the joint sleeve of pull bar Connection Block 4a is sleeved on conductive metal pipe 1913 periphery in the first switch lever 191 and coincide and coordinates, contact tube 3a is connected with by spring touch finger conduction in the connectivity port of pull bar Connection Block 4a, the other end of contact tube 3a is connected in the electrical connection 2a be installed in the middle part of insulating basin 1a by spring touch finger conduction, identical, conductive metal pipe 1923 on second switch pull bar 192 conducts electricity with the pull bar Connection Block 4b of the second conducting end B and is connected, pull bar Connection Block 4b has the joint sleeve extended along switch lever axis direction and the connectivity port be vertical in the middle part of joint sleeve equally, the two ends of joint sleeve are provided with shading ring 5b, the joint sleeve of pull bar Connection Block 4b is sleeved on conductive metal pipe 1923 periphery on second switch pull bar 192 and coincide and coordinates, contact tube 3b is connected with by spring touch finger conduction in the connectivity port of pull bar Connection Block 4b, the other end of contact tube 3b is connected in the electrical connection 2b be installed in the middle part of insulating basin 1b by spring touch finger conduction.
The principle that ultrahigh speed Switching embodiments of the present invention realizes divide-shut brake is as follows: the first switch lever 191 and second switch pull bar 192 under the driving of repulsion operating mechanism close to each other or away from, conducting metal part on switch contact on first switch lever 191 and second switch pull bar 192 has two kinds of position relationships, the first: when the conducting metal part on the switch contact in the first switch lever 191 axially moves to identical with the insulated connecting piece axial location on the switch contact on second switch pull bar 192, the conducting metal part of the switch contact of the conducting metal part in the first switch lever 191 successively on cross-over connection second switch pull bar 192, as shown in Figure 6, 1913, 1926, 1915, 1924 until 1923 are communicated with successively, now, first switch lever 191 and second switch pull bar 192 form conductive path, electric current can from the first conducting end A conducting to the second conducting end B, be switch to close a floodgate, the second: when the conducting metal part on the switch contact in the first switch lever 191 moves to identical with the conducting metal part axial location on the switch contact on second switch pull bar 192, first switch lever 191 is identical with insulated connecting piece axial location with the conducting metal part on second switch pull bar 192 and separate successively, as shown in Figure 5, separate by 1914 between 1913 and 1915, separate by 1925 between 1915 and 1924, now, the current circuit of conducting can not be formed between first switch lever 191 and second switch pull bar 192, be switch separating brake, it should be noted that, in the first switch lever 191 and second switch pull bar 192 movement travel, the conducting metal part 1913 of the first switch lever 191 conducts electricity with the pull bar Connection Block 4a of the first conducting end A all the time and is connected, conducting metal part 1923 on second switch pull bar 192 conducts electricity with the pull bar Connection Block 4b of the second conducting end B all the time and is connected.
The course of work of the repulsion operating mechanism of the embodiment of the present invention is as follows: when separating brake, shackle rod 19 is in closing position, namely the jacking block 18 on shackle rod is positioned at the low order end of movement travel, repulsion dish is positioned at the low order end of closed dielectric chamber, the pulse power 10 is energized to the first coil 91, repulsion dish 90 produces inductive loop, inductive loop is contrary with the sense of current of the first coil 91, repulsion is produced between repulsion dish 90 and the first coil 91, thus repulsion dish 90 drives shackle rod 19 and then drive switch lever 191 to left movement, wherein, the motion process of shackle rod is divided into two stages: the first stage, due to the existence of through hole 610, at the motion initial stage of repulsion dish 90, the gases at high pressure of repulsion dish 90 direction of motion side can be discharged from damping through hole, the square active force of gases at high pressure to repulsion dish is little and constant, ensure the high speed divide-shut brake motion of shackle rod, the branch wire time of switch can not be affected in use, second stage, repulsion dish 90 moves to damping through hole left, along with the continuation campaign of repulsion dish, the excircle of repulsion dish can gradually shutoff damping through hole until shutoff damping through hole completely, in this section of process, the aperture for gases at high pressure discharge of damping through hole is more and more less, the discharge rate of high-pressure buffer gas is fewer and feweri, the reaction force of gases at high pressure to repulsion dish 90 is increasing, increasing to the buffer-braking power of repulsion dish, the speed of repulsion dish is reduced gradually, until the jacking block 18 of shackle rod contacts stop motion with second gear stops 121, namely separating brake process is completed, this repulsion operating mechanism is achieved when being applied in high-speed switch by such gas buffer, can quick acting switching-off, and minimum distance after separating brake completes and realize braking in the time, avoid repulsion dish and first, the collision of the second coil.In whole separating brake process, limit spring in divide-shut brake maintaining body is in the motion early stage of repulsion dish, jacking block 18 is close to spacing collar, limit spring is compressed, switch lever drive jacking block cross spacing collar to left movement time, limit spring extend, switch lever move to jacking block contact with limit block fast 121 time, limit spring can apply a confining force to jacking block, and maintained switch pull bar is in open position; During combined floodgate, the pulse power 10 is energized to the second coil 92, and produce repulsion between the second coil 92 and repulsion dish 90, the motion process of switch lever is contrary.
In the present embodiment, the conducting metal part of switch contact is connected by insulated connecting piece successively interval, in other embodiments, first switch contact can adopt and arrange conducting metal circle in the periphery of an insulated column successively interval, same, second switch contact can adopt and arrange conducting metal circle in interval successively at the inwall of an insulated tube, and the outer peripheral face of conducting metal circle for the first time on switch contact coincide with the outer peripheral face of the conducting metal circle on second switch contact and coordinates, as shown in Figure 7.
In the present embodiment, first, the conducting metal part identical length etc. of second switch contact, the length of insulated connecting piece is also all equal, in other embodiments, the length of the conducting metal part on the first switch contact can be not equal to the length of the conducting metal part on second switch contact, the length of the insulated connecting piece on the first switch contact also can be not equal to the length of the insulated connecting piece on second switch contact, as long as the length of the conducting metal part that the length meeting the conducting metal part on the first switch contact is greater than on the length of the insulation linkage section on second switch contact and second switch contact is greater than the length of the insulated connecting piece on the first switch contact, be the schematic diagram during mechanical switch separating brake of this execution mode as shown in Figure 8, the schematic diagram during mechanical switch combined floodgate of this execution mode is shown in Fig. 9.
In the present embodiment, first, second switch contact is circular tube shaped, in other embodiments, internal via shape can be adopted to be quadrangle or triangle or hexagon etc.
Two groups of switch lever in the ultrahigh speed switch of the embodiment of the present invention all use tubular structure, not only in divide-shut brake motion process to heart better performances, significantly reduce the overall weight of switch lever simultaneously, two switch lever are also less likely to occur relativity shift or distortion in motion process, ensure that the stability of divide-shut brake, the external diameter of the conducting metal part of the first switch lever just equals the internal diameter of the conducting metal part of second switch pull bar, first, when the relative motion of second switch pull bar realizes closing a floodgate, first, inside and outside circle side face close contact can be passed through in second conducting metal part two ends, not only there is good kinetic stability, also increase flow area, improve through-current capability.
Claims (9)
1.
a kind of ultrahigh speed mechanical switch, comprise insulation shell, described insulation shell inside is provided with switch fracture, described switch fracture comprises the first switch contact and second switch contact, the operating mechanism for driving the first second switch Contact Breaking/Making Operations lock is provided with in described insulation shell, close a floodgate time first, second switch contact is all in closing position, when separating brake first, second switch contact is all in open position, it is characterized in that, first, second switch contact is interval with conducting metal part successively along the direction of motion, interval location place insulation often between adjacent two conducting metal parts, described conducting metal part has cross-over connection length, this cross-over connection length makes satisfied two conditions: first, when closing position, adjacent two conducting metal parts on the second switch contact of the conducting metal part on the first switch contact cross-over connection and its adaptation successively also realize first, the conducting of second switch contact, the second, when open position, the interval location place between adjacent two the conducting metal parts on the second switch contact of its adaptation of at least one end of the conducting metal part on the first switch contact also realizes cut-offfing of first, second switch contact.
2.
ultrahigh speed mechanical switch according to claim 1, it is characterized in that, conducting metal part on first, second switch contact described is all insulated successively by insulated connecting piece and separates, and described second switch contact has to coincide with the outer peripheral face of the first switch contact and coordinates and insert for the first switch contact and realize the spliced eye of divide-shut brake in the relative movement of contact axis.
3.
ultrahigh speed mechanical switch according to claim 2, it is characterized in that, conducting metal part on first, second switch contact described and insulated connecting piece are circular tube shaped, and the first switch contact is identical with the structure of the conducting metal part on second switch contact, first switch contact is identical with the insulated connecting piece structure on second switch contact, and the length of conducting metal part is all greater than the length of insulated connecting piece.
4. a switch fracture, comprise the first switch contact and second switch contact, first, second switch contact under the driving of corresponding operating mechanism relatively near or away from realization close a floodgate or separating brake, close a floodgate time first, second switch contact is all in closing position, when separating brake first, second switch contact is all in open position, it is characterized in that, first, second switch contact is interval with conducting metal part successively along the direction of motion, interval location place insulation often between adjacent two conducting metal parts, described conducting metal part has cross-over connection length, this cross-over connection length makes satisfied two conditions: first, when closing position, adjacent two conducting metal parts on the second switch contact of the conducting metal part on the first switch contact cross-over connection and its adaptation successively also realize first, the conducting of second switch contact, the second, when open position, the interval location place between adjacent two the conducting metal parts on the second switch contact of its adaptation of at least one end of the conducting metal part on the first switch contact also realizes cut-offfing of first, second switch contact.
5.
switch fracture according to claim 4, it is characterized in that, conducting metal part on first, second switch contact described is all insulated successively by insulated connecting piece and separates, and described second switch contact has to coincide with the outer peripheral face of the first switch contact and coordinates and insert for the first switch contact and realize the spliced eye of divide-shut brake in the relative movement of contact axis.
6.
switch fracture according to claim 5, it is characterized in that, conducting metal part on first, second switch contact described and insulated connecting piece are circular tube shaped, and the first switch contact is identical with the structure of the conducting metal part on second switch contact, first switch contact is identical with the insulated connecting piece structure on second switch contact, and the length of conducting metal part is all greater than the length of insulated connecting piece.
7.
a kind of switch contact, it is characterized in that, comprise contact body, described contact body is interval with conducting metal part successively along moving, interval location place insulation often between adjacent two conducting metal parts, described conducting metal part has cross-over connection length, and this cross-over connection length meets two conditions: first, when closing position, the conducting metal part in this contact body can adjacent two conducting metal parts in the contact body of cross-over connection and this contact body adaptation; The second, when open position, the interval location place between adjacent two the conducting metal parts in the contact body of its adaptation of at least one end of the conducting metal part in this contact body.
8.
switch contact according to claim 7, is characterized in that, the conducting metal part in described contact body is by insulated connecting piece insulation gap successively, and described conducting metal part and insulated connecting piece are tubulose.
9.
switch contact according to claim 8, it is characterized in that, each conducting metal part structure in described contact body is all identical, and each insulated connecting piece structure in described contact body is all identical, and the length of conducting metal part is greater than the length of insulated connecting piece.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410547898.4A CN104332345B (en) | 2014-10-16 | 2014-10-16 | A kind of ultrahigh speed mechanical switch and its switch fracture and its switch contact |
| PCT/CN2015/092027 WO2016058549A1 (en) | 2014-10-16 | 2015-10-15 | Ultra-high-speed mechanical switch, switch fracture thereof and switch contacts thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410547898.4A CN104332345B (en) | 2014-10-16 | 2014-10-16 | A kind of ultrahigh speed mechanical switch and its switch fracture and its switch contact |
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| Publication Number | Publication Date |
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| CN104332345A true CN104332345A (en) | 2015-02-04 |
| CN104332345B CN104332345B (en) | 2017-03-01 |
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| CN201410547898.4A Active CN104332345B (en) | 2014-10-16 | 2014-10-16 | A kind of ultrahigh speed mechanical switch and its switch fracture and its switch contact |
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| Country | Link |
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| CN (1) | CN104332345B (en) |
| WO (1) | WO2016058549A1 (en) |
Cited By (6)
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| WO2016058548A1 (en) * | 2014-10-16 | 2016-04-21 | 国家电网公司 | Repulsion operation mechanism |
| WO2016058549A1 (en) * | 2014-10-16 | 2016-04-21 | 国家电网公司 | Ultra-high-speed mechanical switch, switch fracture thereof and switch contacts thereof |
| CN108878211A (en) * | 2018-08-29 | 2018-11-23 | 浙江紫光电器有限公司 | A kind of synchronization mechanism of high pressure double break circuit breaker |
| CN109036952A (en) * | 2018-08-29 | 2018-12-18 | 浙江紫光电器有限公司 | A kind of switching acceleration mechanism of vacuum circuit breaker |
| CN109036951A (en) * | 2018-08-29 | 2018-12-18 | 浙江紫光电器有限公司 | A kind of module of multi-break high-voltage circuitbreaker |
| CN111751602A (en) * | 2020-07-15 | 2020-10-09 | 武汉启亦电气有限公司 | Electroscope for distribution network insulated conductor |
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| WO2016058548A1 (en) * | 2014-10-16 | 2016-04-21 | 国家电网公司 | Repulsion operation mechanism |
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| CN109036951B (en) * | 2018-08-29 | 2024-04-16 | 浙江紫光电器有限公司 | Module of multi-fracture high-voltage circuit breaker |
| CN109036952B (en) * | 2018-08-29 | 2024-04-16 | 浙江紫光电器有限公司 | Switching brake accelerating mechanism of vacuum circuit breaker |
| CN111751602A (en) * | 2020-07-15 | 2020-10-09 | 武汉启亦电气有限公司 | Electroscope for distribution network insulated conductor |
| CN111751602B (en) * | 2020-07-15 | 2022-04-08 | 武汉启亦电气有限公司 | Electroscope for distribution network insulated conductor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016058549A1 (en) | 2016-04-21 |
| CN104332345B (en) | 2017-03-01 |
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