A kind of high pressure sulfur hexafluoride breaker and two dynamic transmission device thereof
Technical field
The invention belongs to high pressure sulfur hexafluoride breaker technical field, particularly a kind of double movement high voltage sulfur hexafluoride breaker and two dynamic transmission device thereof.
Background technology
Along with the research that deepens continuously to high pressure sulfur hexafluoride breaker arc quenching chamber structure, people have invented again self energy thermally expansive high pressure sulfur hexafluoride breaker arc control device on the basis of single pressure air pressing type SF 6 arc-extinguishing chamber of circuit breaker, it is owing to make use of the energy of electric arc own combustion, thus make operating work greatly reduce, be a a progressive step technically.However, but due to current single pressure type and self-blasting circuit breaker arc control device, a deciliter mode for its dynamic and static contact adopts stationary contact to fix, the motion of simple dependence moving contact end realize with fixed contact deciliter, so the stroke of moving contact is larger during its breaking-closing operating, divide-shut brake is longer for operate time, requires that the operating work of breaker operation mechanism is also larger in addition.
Make reduce as much as possible to reach arc extinguishing fracture apart from the required time during separating brake to realize reducing operating work and improving opening velocity, there is a kind of double movement high voltage circuit breaker, two dynamic transmission device has been set up between the moving contact and static arc contact of its arc control device, static arc contact and moving contact is made to do synchronous counter motion, namely opposing motion both when separating brake, move toward one another both during combined floodgate.Namely Chinese patent literature CN101599389B discloses a kind of double acting self energy thermal expansion type high pressure sulfur hexafluoride breaker arc extinguish chamber with this function, it comprises dynamic contact mechanism and is arranged on the static contact mechanism directly over dynamic contact mechanism, static contact mechanism comprises quiet main contact, static arc contact seat and static arc contact, dynamic contact mechanism comprises quenching nozzle, dynamic main contact and moving arcing contact, dynamic main contact is corresponding with quiet main contact and static arc contact respectively with moving arcing contact, quenching nozzle comprises the main injection jet of inside and outside coaxial setting and interior spout, moving arcing contact is positioned at spout internal, these arc control device are rotated by the pull bar shift fork be connected with dynamic contact mechanism, and then by the bearing pin that connects static arc contact and shift fork and horizontal pin-and-hole coordinate drive static arc contact vertically guide rail move up and down, realize the counter motion of moving contact and static arc contact, this employing shift fork, the two dynamic transmission device not only complex structure of guide rail form, take up room larger, also higher to the required precision of processing and assembling, production technology is more complicated, also exist processing and assembly difficulty larger, the technical problem that manufacturing cost is higher, the gearratio of shift fork transmission is wayward in addition, make the operate time of static arc contact and move distance wayward numerically constant, and easily there is the phenomenon that static arc contact action is delayed, the less stable of its operate time.
Summary of the invention
The object of this invention is to provide a kind of structure and the two dynamic transmission device of simple, the lower-cost high pressure sulfur hexafluoride breaker of manufacturing process.Meanwhile, the present invention also provides a kind of high pressure sulfur hexafluoride breaker that this two dynamic transmission device is housed.
For achieving the above object, a kind of high pressure sulfur hexafluoride breaker of the present invention adopts following technical scheme: a kind of high pressure sulfur hexafluoride breaker, comprise static arc contact, static contact component and the moving contact component of energy relative to the movement of static contact component linear reciprocation, two dynamic transmission device is provided with between moving contact component and static arc contact, moving contact component drives static arc contact to do counter motion by two dynamic transmission device, described two dynamic transmission device comprises and be arrangeding in parallel, all along active tooth bar and the static arc contact tooth bar of the extension of the moving contact component direction of motion, initiatively be provided with the gear with engaged transmission while of this two tooth bar between tooth bar and static arc contact tooth bar, the rotating shaft position of this gear is fixedly installed, initiatively tooth bar is fixedly connected on moving contact component, do linear reciprocation with moving contact component to move, initiatively tooth bar does counter motion by gear driven static arc contact tooth bar, static arc contact tooth bar is fixedly connected on static arc contact, drive static arc contact to do linear reciprocation to move.
Be provided with for resisting first strutting piece of active tooth bar to the direction strain away from gear in the side at the active tooth bar back side, be provided with for resisting second strutting piece of static arc contact tooth bar to the direction strain away from gear in the side at the static arc contact tooth bar back side, the position of first, second strutting piece is fixed and is coordinated with the Dorsal glide of respective rack or roll and coordinates.
First, second strutting piece described is support roller or supporting roller, and the center of circle conllinear of first, second strutting piece and gear three, three's circle center line connecting is perpendicular to the direction of motion of moving contact component.
Be provided with the guide plate that plate face is parallel to gear plane in the side of gear or both sides, guide plate is fixedly mounted on static contact component, and described pinion rotation is arranged on guide plate; Initiatively tooth bar upper end be opened in coordinating for guiding the first gathering sill of active tooth bar linear reciprocation movement to lead on guide plate; The upper end of static arc contact tooth bar and be opened in leading for the second gathering sill guiding static arc contact rack linear to move back and forth on guide plate and coordinate.
The upper end of the main injection jet of described moving contact component is fixed with spout keeper, and the lower end of described active tooth bar is fixedly connected on spout keeper; The lower end of described static arc contact tooth bar is fixedly connected on the upper end of static arc contact.
The upper end of the main injection jet of described moving contact component is fixed with spout keeper, and the lower end of described active tooth bar is fixedly connected on spout keeper; The lower end of described static arc contact tooth bar is fixedly connected on the upper end of static arc contact.
The two dynamic transmission device of a kind of high pressure sulfur hexafluoride breaker of the present invention adopts following technical scheme: a kind of two dynamic transmission device of high pressure sulfur hexafluoride breaker, this transmission device comprises and be arrangeding in parallel, the active tooth bar that all can extend along the moving contact component direction of motion and static arc contact tooth bar, initiatively be provided with the gear with engaged transmission while of this two tooth bar between tooth bar and static arc contact tooth bar, the rotating shaft position of gear is fixedly installed, initiatively tooth bar is used for being fixedly connected with moving contact component, do linear reciprocation with moving contact component to move, initiatively tooth bar does counter motion by gear driven static arc contact tooth bar, static arc contact tooth bar is used for being fixedly connected with static arc contact, drive static arc contact to do linear reciprocation to move.
Be provided with for resisting first strutting piece of active tooth bar to the direction strain away from gear in the side at the active tooth bar back side, be provided with for resisting second strutting piece of static arc contact tooth bar to the direction strain away from gear in the side at the static arc contact tooth bar back side, the position of first, second strutting piece is fixed and is coordinated with the Dorsal glide of respective rack or roll and coordinates.
First, second strutting piece described is support roller or supporting roller, and the center of circle conllinear of first, second strutting piece and gear three, three's circle center line connecting is perpendicular to the direction of motion of moving contact component.
Be provided with the guide plate that plate face is parallel to gear plane in the side of gear or both sides, guide plate is for being fixedly mounted on static contact component, and described pinion rotation is arranged on guide plate; The lower end of described active tooth bar is stiff end, for being fixedly connected on moving contact component, initiatively tooth bar upper end be opened in coordinating for guiding the first gathering sill of active tooth bar linear reciprocation movement to lead on guide plate; The lower end of described static arc contact tooth bar is stiff end, for being fixedly connected on static arc contact, the upper end of static arc contact tooth bar and be opened in leading for the second gathering sill guiding static arc contact rack linear to move back and forth on guide plate and coordinate.
In the present invention, after two dynamic transmission device between moving contact component and static arc contact adopts rack pinion structure, compared with the drive mechanism of existing shift fork form, the compact overall structure of this transmission device, the technique of the processing of gear, tooth bar and assembling is simple and precision is easy to guarantee, and manufacturing cost reduces; Rack-and-pinion transferring power is larger simultaneously, stable drive, reliability are high, its gearratio is constant simultaneously, transmission accuracy is high, static arc contact and moving contact component is made to have good synchronism and fast response time, through test, the opening velocity of circuit breaker of the present invention can reach 15m/s, well meets the requirement of circuit breaker to opening velocity, and makes the stability of divide-shut brake operate time and the reliability of divide-shut brake action be obtained for sound assurance.
After the present invention passes through to arrange the gathering sill corresponding with each tooth bar on guide plate, be convenient to guide the motion of each tooth bar, well ensure that positive engagement and the transmission of power of each rack and pinion, simultaneously, spacing effect can also be played, prevent the part of damage because of excessive velocities generation overshoot.After first, second strutting piece is set, effectively can reduces the strain of initiatively tooth bar and static arc contact tooth bar when divide-shut brake moves, ensure the reliability of engaged transmission; Two strutting pieces adopt the form of support roller or roller to be convenient to the loss reducing friction and reduce operating work.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of high pressure sulfur hexafluoride breaker of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the stereogram of the semilune body of spout keeper in pie graph 1.
Embodiment
The embodiment of the two dynamic transmission device of high pressure sulfur hexafluoride breaker provided by the invention is shown in the two dynamic transmission device shown in Fig. 1 and Fig. 2, it comprises and to be arranged in parallel, all along active tooth bar 6 and the static arc contact tooth bar 24 of the extension of the moving contact component direction of motion, initiatively be provided with the gear 22 with engaged transmission while of this two tooth bar between tooth bar and static arc contact tooth bar, the position of the rotating shaft of this gear is fixedly installed, initiatively tooth bar 6 is for being fixedly connected with moving contact component, do linear reciprocation with moving contact component to move, initiatively tooth bar 6 drives static arc contact tooth bar 24 to do counter motion by gear 22, static arc contact tooth bar 24 is for being fixedly connected with static arc contact 21, drive static arc contact to do linear reciprocation to move.
In the present embodiment, the guide plate 3 that plate face is parallel to gear plane is equipped with in the both sides of gear, the lower end of two guide plates is for being installed in the arcing contact seat 23 of static contact component, be folded with T-shaped cushion block 2 between the upper end of two guide plates, and linked together by this cushion block, to ensure the distance between two guide plates, the jut of this T-shaped cushion block is located at outside guide plate, this part can adopt cylinder, the form such as tetragonal body or bulb, holds use when being convenient to assembling; Gear 22 is arranged on two guide plates 3 by its axis of rotation; Initiatively the lower end of tooth bar 6 be stiff end, for being fixedly connected on moving contact component, initiatively tooth bar upper end by guide finger 4 disposed thereon be opened in coordinating for guiding the first gathering sill 31 of initiatively tooth bar linear reciprocation movement lead on guide plate, this fit form can be slip or rolling cooperation; The lower end of described static arc contact tooth bar 24 is stiff end, for being fixedly connected on static arc contact 21, being led by the second gathering sill 32 that guide finger disposed thereon and the confession be opened on guide plate guide static arc contact rack linear to move back and forth and coordinating in the upper end of static arc contact tooth bar, this fit form can be slide or roll to coordinate.
Guide plate 3 is rotatablely equipped with on the position at correspondence active tooth bar 6 back side for resisting first strutting piece 5 of active tooth bar to the direction strain away from gear 22, same, the position at corresponding static arc contact tooth bar 24 back side is rotatablely equipped with for resisting second strutting piece 25 of static arc contact tooth bar to the direction strain away from gear 22, two strutting pieces are support roller, and roll with the back side of corresponding tooth bar and coordinate, the center of circle conllinear of gear 22 and two strutting piece threes simultaneously, three's circle center line connecting is perpendicular to the direction of motion of moving contact component, also namely vertical with static arc contact tooth bar, can effectively prevent active tooth bar 6 and static arc contact tooth bar 24 when divide-shut brake from strain occurring thus affects positive engagement and the transmission of power of wheel and rack like this, make transmission of power more reliable and more stable, further increase stability and the reliability of divide-shut brake operate time.Certainly, if the three center of circle is not point-blank, the effect of certain resistance strain can be played equally.
A kind of embodiment of high pressure sulfur hexafluoride breaker provided by the invention is shown in Fig. 1--shown in Fig. 3, it comprises static arc contact 21, fixed static contact component and the moving contact component of energy relative to the movement of static contact component linear reciprocation, wherein, the main injection jet 18 that moving contact component comprises moving contact 10 and is arranged on moving contact, the upper end of main injection jet is fixedly connected with spout keeper 7, this spout keeper is relatively fastened on after on main injection jet by two semi-moon shaped bodies as shown in Figure 3, the mode of being tightened up by securing member radial direction is more tightly bound round on main injection jet, the mating surface of main injection jet and spout keeper is arranged with the draw-in groove for axial location and card edge, this assembly connection structure of spout keeper is simple, be convenient to install.Spout keeper 7 is also fixedly equipped with moved end radome 20, this radome is around in the periphery of main injection jet oral area to downward-extension, interior spout 17 is had in main injection jet, moving arcing contact 16 is had in interior spout, the lower end of moving arcing contact is equiped with pull bar 13, and whole moving contact component is sleeved in movable contact block 11, the upper and lower slippage of movable contact block relatively; Static contact component comprises fixed contact pedestal 8 and is arranged on the quiet bearing 1 of upper end of fixed contact pedestal, the inner chamber of fixed contact pedestal and the inner space of quiet bearing form a space that can move up and down for static arc contact 21 and two dynamic transmission device, static contact finger 19 is equiped with inside the bottom of fixed contact pedestal 8, bottom periphery is provided with the quiet end shield 9 be arranged on fixed contact pedestal, in fixed contact pedestal 8, described static arc contact 21 slides and is installed in arcing contact seat 23, and arcing contact seat is fixedly arranged on fixed contact pedestal 8.
In the present embodiment, two dynamic transmission device is provided with between moving contact component and the static arc contact of static contact component, moving contact component drives static arc contact 21 to do counter motion by two dynamic transmission device, this pair of dynamic transmission device is identical with the structure of the two dynamic transmission device that the invention described above provides, will not repeat herein, guide plate 3 in this pair of dynamic transmission device is positioned at quiet bearing 1, the lower end of guide plate is fixedly connected on the upper end of arcing contact seat 23, initiatively the lower end of tooth bar 6 is fixedly connected on the upper end of spout keeper 7, the lower end of static arc contact tooth bar 24 is fixedly connected on the upper end of static arc contact 21.
The divide-shut brake motion process of the present embodiment is as follows: during separating brake, pull bar 13 moves downward, drive moving contact component moves downward, and the spout keeper 7 in this assembly drives static arc contact 21 to move upward by the engaged transmission of active tooth bar 6, gear 22 and static arc contact tooth bar 24, realizes separating brake; During combined floodgate, pull bar 13 moves upward, and the direction of motion of each moving parts is just contrary with separating brake process, no longer carefully states; In divide-shut brake process, moved end radome 20 by spout keeper 7 with moving together.In Fig. 1, Fig. 2 12 is bearing, and 14 is the insulated parts in pull bar.
In other embodiments of the present invention, active tooth bar is fixedly connected with the mode that also can adopt other with moving contact component, the lower end of initiatively tooth bar or side such as can be utilized directly to be fixedly connected on main injection jet, at this moment just can omit spout keeper; The strutting piece that support roller in two dynamic transmission device also can adopt the form of supporting roller or coordinate with active tooth bar Dorsal glide, in addition, also strutting piece can be omitted when the rigidity of active tooth bar and intensity enough meet itself and gear positive engagement; Guide plate is fixing each rack and pinion and strutting piece and arrange, in the specific implementation, can arrange guide plate according to actual conditions at gear bilateral also can adopt in the one-sided form arranging guide plate of gear, and the structure of guide plate is not limited to plank frame, as long as play the effect that energy Stationary liquid answers part; Gathering sill on guide plate is not necessary yet, can carry out spacing to each tooth bar as long as have and lead the locating part coordinated with respective rack, if each tooth bar being fixedly connected with and can ensureing that it can move stably relatively with the cooperation of gear, support roller by lower end, now also can omit spacing and guide frame; Each gear and support roller also can adopt other supports be fixed on fixed contact pedestal or quiet bearing to install.