CN104347304A - Ultra-high-speed mechanical switch - Google Patents
Ultra-high-speed mechanical switch Download PDFInfo
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- CN104347304A CN104347304A CN201410547980.7A CN201410547980A CN104347304A CN 104347304 A CN104347304 A CN 104347304A CN 201410547980 A CN201410547980 A CN 201410547980A CN 104347304 A CN104347304 A CN 104347304A
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- switch
- conducting metal
- collets
- speed mechanical
- mechanical switch
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/66—Power reset mechanisms
- H01H71/68—Power reset mechanisms actuated by electromagnet
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides an ultra-high-speed mechanical switch, which comprises an insulation casing, wherein an electromagnetic operating mechanism used for driving a switch pull rod to realize switching-on and switching-off movement is arranged inside the insulation casing, the electromagnetic operating mechanism comprises a movable iron core in transmission connection with the switch pull rod and a sealing cavity used for allowing the movable iron core to do reciprocating movement for completing the switching-on and switching-off operation, the movable iron core is respectively positioned in a switching-on position and a switching-off position when moving to two ends of the sealing cavity, the movable iron core is a moving disc which isolates the sealing cavity into two parts, and through holes which are communicated with the inside and the outside of the sealing cavity and are used for buffer medium inlet and outlet are formed in the switching-on and switching-off positions or positions near the switching-on and switching-off positions on the circumferential cavity wall of the sealing cavity. The ultra-high-speed mechanical switch has the advantages that the switch pull rod can be effectively buffered in the switching-on and switching-off movement process, and the mechanical impact is avoided.
Description
Technical field
The present invention relates to a kind of DC circuit breaker ultrahigh speed mechanical switch.
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.But, existing breaker mechanical switch operation mechanism mostly is spring actuating structure, hydraulic actuating mechanism, its switch off time is a few tens of milliseconds, all cannot realize cut-offfing circuit breaker within the so short time, can not meet the branch wire time requirement of ultrahigh speed mechanical switch.
Notification number is that the Chinese invention patent application of CN102214522A discloses a kind of height with air brake separating buffer device, low tension switch permanent-magnet manipulating mechanism, the dynamic iron core of this permanent-magnet manipulating mechanism and air chamber form air brake separating buffer device, move iron core in air chamber along the air in compressed air cell during its axis high-speed motion, compressed air has reaction force to dynamic iron core, thus form buffering, wherein there is gap between the dynamic iron core of this permanent-magnet manipulating mechanism and the inner hole wall of air chamber, can be overflowed from this gap by the air compressed, this operating mechanism is with in the mechanism of footpath, the lower end of dynamic iron core is fixed with piston panel, piston panel is provided with bleeder port, when dynamic iron core motion compresses air, gas can be discharged from bleeder port.This permanent-magnet manipulating mechanism is when dynamic iron core separating brake motion, owing to there is gap between dynamic iron core and the inwall of air chamber, simultaneously, the piston panel of dynamic iron core lower end is provided with bleeder port, the buffering of such pore to dynamic iron core is limited, the buffer requirements of ultrahigh speed mechanical switch can not be met, hold very much because buffer invalidation produces mechanical shock and cause operating mechanism to damage.
Summary of the invention
The object of the present invention is to provide a kind of when switch lever divide-shut brake moves, can the ultrahigh speed mechanical switch of the effective mechanical shock of buffer switch pull bar.
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 the electromagnetic operating mechanism for the motion of driving switch pull bar divide-shut brake, described electromagnetic operating mechanism comprises the dynamic iron core be in transmission connection with switch lever and the seal chamber completing divide-shut brake for dynamic iron core reciprocating motion, described dynamic iron core is moving to time-division other places, seal chamber two ends in closing position and open position, described dynamic iron core is for completely cut off for two-part moving coil by seal chamber, the circumferential cavity wall of described seal chamber is provided with inside and outside communication seals cavity in divide-shut brake position or close divide-shut brake position, for passing in and out the through hole of buffer medium.
The collets that described seal chamber is docking together by two, docking end face is respectively equipped with groove form, the groove cell wall of moving coil and collets seals and is slidably matched, two coils for actuation movement dish of electromagnetic operating mechanism are fixedly arranged on the bottom portion of groove of two collets respectively, two end faces settings that the adjacent coil of described through hole is close to each other.
Two the fixed muffle fixing docking of collets by being enclosed within collets periphery, two collets relatively away from two ends be provided with the outward flange coordinated that to coincide with the endoporus of fixed muffle, the two ends of described fixed muffle are respectively equipped with the stopping surface clamping two collets for block.
The barrel of described fixed muffle is provided with the hole of through barrel.
One end of described fixed muffle is provided with spring retaining mechanisms, described spring retaining mechanisms comprises the limit spring that two are symmetrically set in fixed muffle axis both sides, when divide-shut brake position, the end of switch lever lays respectively at the axis both sides of limit spring, the end of described switch lever is hinged with by being pressed in the contiguous block of limit spring near one end of fixed muffle axis respectively, and the other end of described limit spring is provided with the adjusting device for regulating limit spring pre compressed magnitude.
Two limit spring are located in two spacing collars respectively, described contiguous block slidable fit is in spacing collar, described adjusting device comprises the adjusting bolt of spinning in the bottom of spacing collar, described adjusting bolt puts in one end bottom spacing collar and connects the adjustment pressing plate that top is pressed in limit spring end, screws adjusting bolt and can regulate precommpression to limit spring.
The both sides of described spring holding structure respectively relative spacing are provided with the stop block for the movement travel of block limit switch pull bar.
Described ultrahigh speed mechanical switch also comprises switch fracture, the switch contact of described switch fracture comprises 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: 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.
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.
It is two parts that seal chamber completely cuts off by the moving coil of ultrahigh speed mechanical switch of the present invention, there is not gap in the face that is slidably matched of moving coil and seal chamber, moving coil compresses the gas in the seal chamber of its direction of motion side when driving switch lever to do divide-shut brake motion, divide-shut brake position due to seal chamber or the perisporium near divide-shut brake position are provided with the through hole inside and outside communication seals cavity, can be discharged by through hole by the gas compressed, so just substantially reduce by the gas that compresses the reaction force of moving coil, enable switch lever divide-shut brake at a high speed, and when moving coil is about to move to divide-shut brake position, the outer weekly assembly of the moving coil through hole gradually on shutoff seal chamber perisporium, reduced gradually by the amount that the gas compressed is discharged from through hole like this, the pressure of gas unprecedentedly increases, the reaction force of moving coil is sharply increased, play the effective buffering to moving coil, avoid moving coil to the impact at seal chamber two ends, simultaneously, because through hole is opened in the divide-shut brake position of seal chamber or close divide-shut brake position, gas to be only from the periphery of moving coil shutoff moving coil to complete this process of shutoff moving coil to moving coil buffering course, can make like this switch lever under the drive of moving coil at a high speed leave closing position, and when moving to open position fast cache that speed is dropped to is minimum, cushion stroke is shorter, braking effect is better.
Further, housing is formed by two collets notch relative combinations, the current versus portion metal parts that efficiently avoid in coil produces electromagnetic effect, improve the conversion efficiency of electric energy and kinetic energy, two coils are installed in the bottom land of the groove of two collets respectively, moving coil is between coil and be slidedly assemblied in groove, and coil and moving coil are all positioned at the buffering cavity of insulation, avoid the damage because colliding other elements.
Further, one end of shackle rod is connected with spring retaining mechanisms, effectively maintain that switch lever is stable after divide-shut brake has moved is in divide-shut brake position, and spring retaining mechanisms structure is simple, instead of the design of conventional magnetic force maintaining body, structure is simple while, also there is higher maintenance reliability.Meanwhile, bottom the spacing collar of divide-shut brake maintaining body, being provided with adjusting bolt, the pre compressed magnitude of limit spring can be regulated by screwing adjusting bolt, thus regulate limit spring to the maintenance size of switch lever.
Further, the effective block switch lever of stop block that the both sides relative spacing of spring retaining mechanisms is arranged is moved, and by switch lever block in divide-shut brake position, effectively avoid moving coil high-speed motion further and cause the mechanical shock to the coil in seal chamber.
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 structural representation of switch fracture II when Fig. 5 is open position;
The structural representation of switch fracture II 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 gas 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 moving coil 90, moving coil 90 place plane is vertical with shackle rod 19, the left and right sides of moving coil 90 is provided with two collets 61 respectively relatively, 62, collets 61, 62 structures are identical, collets 61, opening is respectively equipped with relatively and the groove of the equal orientation movements dish 90 of opening on 62, collets 61, the periphery of the groove on 62 and moving coil 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 moving coil 90 and identical with the groove footpath of groove, first, second coil 91, 92 is all parallel with moving coil 90 and be positioned at the both sides of moving coil 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, wherein, the quantity of through hole can be arranged according to actual needs.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 outward flange, this two outward flange equal diameters and equal the diameter of bore of fixed muffle 21, at collets 61, between two outward flanges 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, in the present embodiment, the stopping surface of fixed muffle right-hand member provides by the bottom of the cylinder of right side, in other embodiments, also can be bolted and realize at the stop catch plate of fixed muffle right-hand member.The sidewall of first, second coil 91,92 and collets 61,62 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, moving coil 90 fixing on shackle rod 19 can realize divide-shut brake at collets 61,62 to reciprocatingly sliding about in the cushion chamber 7 of synthesis, the circumference barrel of fixed muffle 21 is evenly provided with strip hole 211 and in grid-like, greatly reducing the weight of fixed muffle like this, is that whole device is lighter.It should be noted that in addition, high pressure sulfur hexafluoride is full of in the inner space of insulation shell in use, the sulfur hexafluoride gas of high pressure serves as buffer medium, gases at high pressure can be full of buffering cavity by strip hole 211, 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 moving coil 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 through hole of the moving coil direction of motion side gas of discharging can enter cushion chamber by flow channel from the damping hole of moving coil direction of motion side dorsad.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, 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 section 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 section on the switch contact in the first switch lever 191 axially moves to identical with the insulation linkage section axial location on the switch contact on second switch pull bar 192, the conducting metal section of the switch contact of the conducting metal section 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 section on the switch contact in the first switch lever 191 moves to identical with the conducting metal section axial location on the switch contact on second switch pull bar 192, first switch lever 191 and the conducting metal section on second switch pull bar 192 are identical with insulation linkage section axial location 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 section 1913 of the first switch lever 191 is conducted electricity with the pull bar Connection Block 4a of the first conducting end A all the time and is connected, conducting metal section 1923 on second switch pull bar 192 is conducted 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, moving coil is positioned at the low order end of closed dielectric chamber, the pulse power 10 is energized to the first coil 91, moving coil 90 produces inductive loop, inductive loop is contrary with the sense of current of the first coil 91, repulsion is produced between moving coil 90 and the first coil 91, thus moving coil 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 moving coil 90, the gases at high pressure of moving coil 90 direction of motion side can be discharged from through hole, the square active force of gases at high pressure to moving coil 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, moving coil 90 moves to through hole left, along with the continuation campaign of moving coil, the excircle of moving coil can gradually shutoff through hole until shutoff through hole completely, in this section of process, the aperture for gases at high pressure discharge of through hole is more and more less, the discharge rate of high-pressure buffer gas is fewer and feweri, the reaction force of gas to moving coil 90 is increasing, increasing to the buffer-braking power of moving coil, the speed of moving coil 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 moving coil 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 moving coil, 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 moving coil 90, the motion process of switch lever is contrary.
In above-described embodiment, electromagnetic operating mechanism comprises the coil that two are respectively used to actuation movement dish separating brake and combined floodgate, in other embodiments, electromagnetic operating mechanism can adopt a coil and permanent magnet with the use of permanent magnet mechanism.
In above-described embodiment, housing is docking together by two and docks on end face and establishes reeded collets to form, in other embodiments, housing can be formed at the block sealing plate of tubbiness collets opening part by tubbiness collets and block, now, first, second coil is located at the bottom of the bucket of collets and on block sealing plate respectively.
In above-described embodiment, two collets are fixed by fixed muffle and are formed one for the cushion chamber moved back and forth about moving coil to being combined and being enclosed by first, second coil, in other embodiments, two collets can also realize by the clamping plate being located at two collets left and right sides being fixedly clamped.
In above-described embodiment, the endoporus of fixed muffle is avoided contacting with the outward flange at collets two ends, in other embodiments, outward flange can not be established in the two ends of collets, the periphery of collets can coincide with the endoporus of fixed muffle and coordinate, now, the hole on the barrel of fixed muffle needs to communicate with the through hole on collets, and the gas in the seal chamber formed to enable collets is discharged by the hole on through hole and fixed muffle and entered.
In above-described embodiment, buffer medium is high pressure sulfur hexafluoride, in other embodiments, can be hydraulic oil, and now, need the through hole on collets to be communicated with oil tank, this execution mode structure is comparatively complicated.
In above-described embodiment, holder is provided with divide-shut brake maintaining body, and this divide-shut brake maintaining body adopts spring retaining mechanisms, in other embodiments, divide-shut brake maintaining body can not be set, the divide-shut brake maintaining body of other types also can be set, as electromagnetism maintaining body.
In above-described embodiment, limit spring is contained in spacing collar, the bottom of spacing collar is installed with adjusting bolt, in other embodiments, limit spring can be enclosed within the periphery of hollow cylinder, a hinged periphery, end of shackle rod has the pipe on block edge, pipe is enclosed within hollow cylinder, block is along the end of block in limit spring, shackle rod athletic meeting drives pipe to slide on hollow cylinder, thus compress or loosen limit spring, the other end endoporus of hollow cylinder can offer screw thread, spiral connects a screw rod, the periphery of screw rod arranges the baffle plate being used for block limit spring end, screw the pre compressed magnitude that screw rod can regulate limit spring.
In above-described embodiment, holder is provided with first, second stop block for the movement travel of block limit switch pull bar divide-shut brake, in other embodiments, can not stop block be set, and break first, second coil in order to avoid moving coil high-speed motion, again first, second coil can arrange girth member, or the first second gear stops is located on other and the relatively-stationary fixed structure of fixed muffle.
In above-described embodiment, spring retaining mechanisms is located on holder and between fixed muffle and binding post, in other embodiments, spring retaining mechanisms can be located on other and the relatively-stationary fixture of housing.
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 (10)
1.
a kind of ultrahigh speed mechanical switch, comprise insulation shell, described insulation shell inside is provided with the electromagnetic operating mechanism for the motion of driving switch pull bar divide-shut brake, described electromagnetic operating mechanism comprises the dynamic iron core be in transmission connection with switch lever and the seal chamber completing divide-shut brake for dynamic iron core reciprocating motion, described dynamic iron core is moving to time-division other places, seal chamber two ends in closing position and open position, it is characterized in that, described dynamic iron core is for completely cut off for two-part moving coil by seal chamber, the circumferential cavity wall of described seal chamber is provided with inside and outside communication seals cavity in divide-shut brake position or close divide-shut brake position, for passing in and out the through hole of buffer medium.
2.
ultrahigh speed mechanical switch according to claim 1, it is characterized in that, the collets that described seal chamber is docking together by two, docking end face is respectively equipped with groove form, the groove cell wall of moving coil and collets seals and is slidably matched, two coils for actuation movement dish of electromagnetic operating mechanism are fixedly arranged on the bottom portion of groove of two collets respectively, two end faces settings that the adjacent coil of described through hole is close to each other.
3.
ultrahigh speed mechanical switch according to claim 2, it is characterized in that, two the fixed muffle fixing docking of collets by being enclosed within collets periphery, two collets relatively away from two ends be provided with the outward flange coordinated that to coincide with the endoporus of fixed muffle, the two ends of described fixed muffle are respectively equipped with the stopping surface clamping two collets for block.
4.
ultrahigh speed mechanical switch according to claim 1-3 any one, is characterized in that, the barrel of described fixed muffle is provided with the hole of through barrel.
5.
ultrahigh speed mechanical switch according to claim 1, it is characterized in that, one end of described fixed muffle is provided with spring retaining mechanisms, described spring retaining mechanisms comprises the limit spring that two are symmetrically set in fixed muffle axis both sides, when divide-shut brake position, the end of switch lever lays respectively at the axis both sides of limit spring, the end of described switch lever is hinged with by being pressed in the contiguous block of limit spring near one end of fixed muffle axis respectively, and the other end of described limit spring is provided with the adjusting device for regulating limit spring pre compressed magnitude.
6.
ultrahigh speed mechanical switch according to claim 5, it is characterized in that, two limit spring are located in two spacing collars respectively, described contiguous block slidable fit is in spacing collar, described adjusting device comprises the adjusting bolt of spinning in the bottom of spacing collar, described adjusting bolt puts in one end bottom spacing collar and connects the adjustment pressing plate that top is pressed in limit spring end, screws adjusting bolt and can regulate precommpression to limit spring.
7.
ultrahigh speed mechanical switch according to claim 5 or 6, is characterized in that, the both sides of described spring holding structure respectively relative spacing are provided with the stop block for the movement travel of block limit switch pull bar.
8.
ultrahigh speed mechanical switch according to claim 1, it is characterized in that, described ultrahigh speed mechanical switch also comprises switch fracture, the switch contact of described switch fracture comprises 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: first, when closing position, 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.
9.
ultrahigh speed mechanical switch according to claim 8, 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.
10.
ultrahigh speed mechanical switch according to claim 9, 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 |
|---|---|---|---|
| CN201410547980.7A CN104347304B (en) | 2014-10-16 | 2014-10-16 | A kind of ultrahigh speed mechanical switch |
| PCT/CN2015/092028 WO2016058550A1 (en) | 2014-10-16 | 2015-10-15 | Ultra-high-speed mechanical switch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410547980.7A CN104347304B (en) | 2014-10-16 | 2014-10-16 | A kind of ultrahigh speed mechanical switch |
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| CN104347304A true CN104347304A (en) | 2015-02-11 |
| CN104347304B CN104347304B (en) | 2017-07-21 |
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| CN201410547980.7A Active CN104347304B (en) | 2014-10-16 | 2014-10-16 | A kind of ultrahigh speed mechanical switch |
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| Country | Link |
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| WO (1) | WO2016058550A1 (en) |
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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 |
| WO2016058550A1 (en) * | 2014-10-16 | 2016-04-21 | 国家电网公司 | Ultra-high-speed mechanical switch |
| CN106057554A (en) * | 2015-04-08 | 2016-10-26 | 江苏海达电气有限公司 | Enhanced isolating switch housing |
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| CN117976463A (en) * | 2024-03-06 | 2024-05-03 | 博方电气有限公司 | High-power quick operating device of switch equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104347304B (en) | 2017-07-21 |
| WO2016058550A1 (en) | 2016-04-21 |
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