CN102915892B - Airflow control mechanism for equipment circuit breaker - Google Patents
Airflow control mechanism for equipment circuit breaker Download PDFInfo
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- CN102915892B CN102915892B CN201110223027.3A CN201110223027A CN102915892B CN 102915892 B CN102915892 B CN 102915892B CN 201110223027 A CN201110223027 A CN 201110223027A CN 102915892 B CN102915892 B CN 102915892B
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- housing
- breaker
- flexible board
- lower baffle
- feeler lever
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Abstract
The invention discloses an airflow control mechanism for an equipment circuit breaker, which comprises an upper baffle plate, a lower baffle plate and a grid-shaped groove structure. The upper baffle plate made of a flexible material is connected with a movable feeler lever and synchronously acts with the movable feeler lever; the lower baffle plate made of a flexible material rotates around a rotary shaft; when the movable feeler lever is opened, the lower baffle plate is matched with the upper baffle plate so as to perform synchronous sealing in a local area; and the grid-shaped groove structure is arranged on the inner side of the housing of the equipment circuit breaker and used for attenuating and cooling the leakage airflow in the space between the two sides of the movable feeler lever. Through the airflow control mechanism provided by the invention, the disjunction electric arc of the circuit breaker can enter into an arc-extinguishing chamber rapidly without rebounding; and simultaneously, the high-temperature gas and metal particles are prevented from blowing back so that the damage to the mechanism is reduced. According to the airflow control mechanism for the equipment circuit breaker, the disjunction performance of the equipment circuit breaker can be obviously improved, the service life is prolonged, and the operational reliability is also improved.
Description
Technical field
The present invention relates to breaker for device, more particularly, relate to a kind of airflow control mechanism of breaker for device.
Background technology
At present, the most of dropout mode that adopts hydraulic-electromagnetic of breaker for device on market, this has just determined that its break-time is long compared with other miniature circuit breaker, thus breaking capacity a little less than.Say with regard to external product is flat, the electric pressure of its use occasion is lower, relatively easy in the time of the same short circuit current of disjunction, thereby does not adopt special air-flow control measure; And most domestic product is to use under conventional voltage levvl, also to air-flow, special design is not taked in control, causes its breaking capacity poor.
Simultaneously because the volume of breaker for device is little, arc control device are little, find out by related experiment, the arc stream (high-temperature gas tramp metal particle) that uncontrolled short circuit produces can cause many-sided damage to breaker for device, conventionally have: movable feeler lever burn, the scaling loss that is flexible coupling, high-temperature metal particle makes mechanism's adhesion stuck, and burn handle makes material rotten easily broken etc.Therefore its fast arc extinction and protection actuating mechanism are had higher requirement, so controlling the interrupting performance of air-flow to breaker for device and useful life and reliability has very important meaning.
Summary of the invention
The present invention is intended to propose a kind of short circuit air flow controlling organization that is applied to breaker for device; can do not affect circuit breaker splitting or integrating action with and coordinate with auxiliary switch etc. under the prerequisite of normal function; by taking some special current-controlled structural measures; dynamic isolation arc control device and operating system; avoid electric arc resilience and high-temperature gas blowback, to promote arc extinguishing and protection actuating mechanism and electromagnetic system.
According to one embodiment of the invention, a kind of airflow control mechanism of breaker for device is proposed, comprise plate washer, lower baffle and grid shape groove structure.
Upper plate washer is made by flexible material and is connected with movable feeler lever, and overhead gage is with movable feeler lever synchronization action.Lower baffle plate is made by flexible material and is rotated around the axis, and lower baffle coordinates plate washer synchronously to seal at regional area in movable feeler lever opening procedure.Grid shape groove structure is located at the shell inner side of breaker for device, grid shape groove structure weaken and gap, cooling movable feeler lever two sides in leakage current.
In one embodiment, movable feeler lever is hinged by axle and frame, has the first hole and the second hole on the side plate of movable feeler lever, and the first hole is connected to operating mechanism, and the second hole is connected to overhead gage.
In one embodiment, the end riveted joint moving contact of movable feeler lever, one end of the torsion spring taking axle as mandrel is fixed in frame, and the other end is buckled in the button pawl of movable feeler lever to provide contact to open needed torque.Fixed contact coordinates with moving contact, and fixed contact is fixed on the second binding post, and fixed contact is relative fixing with the shell of breaker for device.
In one embodiment, overhead gage comprises flexible board, bottom plate, side plate and end panel, and bottom plate is connected to one end of flexible board, and side plate is connected to the both sides of bottom plate, and end panel is connected to the other end of flexible board, and the inner side of side plate has convex.Upper plate washer is installed by the convex on side plate in the second hole buckling on movable feeler lever; The belly of bottom plate and movable feeler lever is fitted so that overhead gage is fixed to movable feeler lever; Strain occurs the flexible board of overhead gage in the time that end panel is subject to External Force Acting and relative bottom plate is reversed, and after external force is cancelled, flexible board returns to previous status.
In one embodiment, the shell of breaker for device is formed by the first housing and the assembling of the second housing, and the first housing and the second housing are by tightening of rivet.Breaker for device has operating grip, the first binding post, the second binding post and the bottom baffles of the housing exterior of extending to, and bottom baffles is embedded in the slotted eye on the first housing and the second housing.Breaker for device is installed by mounting nuts.
In one embodiment, lower baffle plate comprises rotating shaft, middle part side plate, middle flexible board and bottom plate.One end of flexible board in the middle of rotating shaft is connected to, the other end of flexible board in the middle of bottom plate is connected to, the both sides of flexible board in the middle of middle part side plate stretches out at rotating shaft two ends place and is connected to.Lower baffle is connected to the first housing and the second housing by rotating shaft, and lower baffle plate rotates taking rotating shaft as axle center, in the time that lower baffle plate is subject to overhead gage compressing, and the rotation of lower baffle in axle is made certain limit, the upper surface laminating of middle part side plate and bottom baffles.In the time of the plate pressurized of bottom, middle part side plate with the upper surface laminating of bottom baffles, middle flexible board generation elastic deformation around axle torsional deflection, after pressure is cancelled, middle flexible board is reset to previous status.
In one embodiment, the shell of breaker for device is equipped with and is formed by the first housing and the second housing, and the first housing and the second housing are by tightening of rivet.Breaker for device has operating grip, the first binding post, the second binding post and the microswitch component of the housing exterior of extending to, microswitch component is embedded in the slotted eye on the first housing and the second housing, microswitch component comprises the sensitive switch being set in plastic sheath, and sensitive switch has button.Breaker for device is installed by mounting nuts.
In one embodiment, lower baffle plate comprises rotating shaft, middle part side plate, middle flexible board and bottom plate.One end of flexible board in the middle of rotating shaft is connected to, the other end of flexible board in the middle of bottom plate is connected to, the both sides of flexible board in the middle of middle part side plate stretches out at rotating shaft two ends place and is connected to.Lower baffle is connected to the first housing and the second housing by rotating shaft, and lower baffle plate rotates taking rotating shaft as axle center.When the bottom plate of the bottom plate compressing lower baffle plate of overhead gage, the flexible board of lower baffle plate and bottom plate rotate around the axis, and two side plates are spacing with the upper surface laminating of plastic sheath, and middle rods is oppressed the button of sensitive switch.Discharge middle flexible board and the bottom plate of lower baffle plate, discharge the button of sensitive switch, push-button reset, middle the flexible board of lower baffle plate resets, the stretching, extension reset under self elastic force effect of the flexible board of overhead gage.
In one embodiment, the first housing and the second housing are provided with dividing plate, and dividing plate and movable feeler lever, overhead gage and lower baffle plate form semi-surrounding structure jointly, by the arc control device in breaker for device and operating mechanism and electromagnetic structure isolation.On the first housing and the second housing, offer walkthrough mouth, staggered arc blow-out mouth and the main vent of offering.
In one embodiment, grid shape groove structure comprises convex and groove, and grid shape groove structure is opened on the first housing and the second housing.
The airflow control mechanism of breaker for device of the present invention can make the breaking arc of circuit breaker enter rapidly arc control device to avoid resilience.The airflow control mechanism of this breaker for device can stop high-temperature gas and metallic blowback, to reduce it, mechanism is caused to damage simultaneously.The airflow control mechanism of this breaker for device can obviously improve interrupting performance, life-span and the functional reliability of breaker for device.
Brief description of the drawings
The above and other feature of the present invention, character and advantage are by more obvious by what become below in conjunction with the description of drawings and Examples, and identical Reference numeral represents identical feature all the time in the accompanying drawings, wherein:
Fig. 1 disclosed according to the airflow control mechanism of the breaker for device of one embodiment of the invention at breaker for device the structural representation during in gate-dividing state.
Fig. 2 disclosed superposed type baffle plate (the flexible gas block panel of a pair of cooperation) according to the airflow control mechanism of the breaker for device of one embodiment of the invention at breaker for device the structural representation during in "on" position.
Fig. 3 has disclosed according to the structural representation of the upper plate washer of the airflow control mechanism of the breaker for device of one embodiment of the invention.
Fig. 4 has disclosed according to the structural representation of the lower baffle plate of the airflow control mechanism of the breaker for device of one embodiment of the invention.
Fig. 5 has disclosed according to the axle of the position, several gas outlet of the airflow control mechanism of the breaker for device of one embodiment of the invention and has surveyed view.
Schematic diagram to airflow influence when Fig. 6 has disclosed according to the airflow control mechanism of the breaker for device of one embodiment of the invention breaker for device disjunction.
Fig. 7 a and Fig. 7 b have disclosed grid shape groove structure and the principle schematic according to the airflow control mechanism of the breaker for device of one embodiment of the invention.
Structure when Fig. 8 has disclosed according to the airflow control mechanism of the breaker for device of one embodiment of the invention for breaker for device with auxiliary switch.
When Fig. 9 has disclosed according to the airflow control mechanism of the breaker for device of one embodiment of the invention for breaker for device with auxiliary switch at breaker for device the structural representation under "on" position.
Embodiment
As previously described; the object of the invention is to propose a kind of short circuit air flow controlling organization that is applied to breaker for device; can do not affect circuit breaker splitting or integrating action with and coordinate with auxiliary switch etc. under the prerequisite of normal function; by taking some special current-controlled structural measures; dynamic isolation arc control device and operating system; avoid electric arc resilience and high-temperature gas blowback, to promote arc extinguishing and protection mechanism system.
The object of the present invention is achieved like this, by adopting a kind of superposed type baffle plate to block the blowback passage of very big portion gas, coordinates the design of both sides grid shape groove structure, weakens the blowback air-flow leaking with cooling both sides.Its concrete structure comprises: an overhead gage connecting firmly with movable feeler lever that made by flexible material, and it can be with movable feeler lever synchronization action; A lower baffle plate that can rotate around a rotating shaft of being made by flexible material equally, it coordinates plate washer to reach the effect of synchronous partial closure in movable feeler lever opening procedure; Be located at two shells relevant position, inner side make grid shape groove structure, its can effectively weaken with gap, cooling movable feeler lever two sides in leakage current.
According to air-flow control structure of the present invention, adopt the baffle arrangement of two foldables, two baffle plates coordinate it to do certain motion in movable feeler lever opening procedure, realize the effect of dynamic (follow movable feeler lever opening degree and change) regional area sealing.Normally close a floodgate under operating state at breaker for device, two baffle plates are pushed down by movable feeler lever belly, it is in closed state, only account for very little space, and when in movable feeler lever opening procedure, two baffle plates stretch and follow movable feeler lever to rotate simultaneously because self is flexible, can close the spatial transition between movable feeler lever and arc control device always.Wherein overhead gage also covers the metal position between movable feeler lever belly and contact, electric arc cannot be returned and alter, and effectively protects movable feeler lever and being flexible coupling below.
Because movable feeler lever is moving component; there is certain gap in itself and shell both sides; in the time of arc burning; air pressure in arc control device sharply raises and forms air-flow; the present invention takes the position of corresponding movable feeler lever inside two shells to set up grid shape groove structure; reach cooling effect with decelerating flow simultaneously, further protected the actuating mechanism of breaker for device.
With the arc control device shape of gear gas respective outer side edges and the reasonable layout of gas outlet shape and position, can make electric arc enter rapidly cutting in arc-chute, extinguish.The rear side sealing that it realizes arc control device in breaking course, makes the arc blow-out better effects if of air-flow, and the arcing time is shorter, effectively improves the interrupting performance of breaker for device.
Fig. 1-Fig. 9 has disclosed according to the airflow control mechanism of the breaker for device of one embodiment of the invention.Shown in figure 1-Fig. 9, the airflow control mechanism of this breaker for device comprises overhead gage, lower baffle plate and grid shape groove structure.
Upper plate washer is made by flexible material and is connected with movable feeler lever, and overhead gage is with movable feeler lever synchronization action.Lower baffle is made by flexible material and is rotated around the axis, and lower baffle coordinates plate washer synchronously to seal at regional area in movable feeler lever opening procedure.Grid shape groove structure is located at the shell inner side of breaker for device, grid shape groove structure weaken and gap, cooling movable feeler lever two sides in leakage current.
Movable feeler lever 122 is hinged by axle 120 and frame 121, has the first hole 123 and 125, the first holes 123, the second hole and be connected to operating mechanism 105, the second holes 125 and be connected to overhead gage 130 on the side plate 124 of movable feeler lever 122.The end riveted joint moving contact 126 of movable feeler lever 122, one end of the torsion spring 119 taking axle 120 as mandrel is fixed in frame 121, and the other end is buckled in the button pawl 127 of movable feeler lever 122 to provide contact to open needed torque.
Fixed contact 110 coordinates with moving contact 126, and fixed contact 110 is fixed on the second binding post 111, and fixed contact 110 is relative fixing with the shell of breaker for device.
Overhead gage 130 comprises flexible board 134, bottom plate 133, side plate 131 and end panel 135, bottom plate 133 is connected to one end of flexible board 134, side plate 131 is connected to the both sides of bottom plate 135, and end panel 135 is connected to the other end of flexible board 134, and the inner side of side plate 131 has convex 132.Upper plate washer 130 is installed in the second hole 125 buckling on movable feeler lever 122 by the convex 132 on side plate 131, and bottom plate 133 is fitted so that overhead gage 130 is fixed to movable feeler lever 122 with the belly of movable feeler lever 122.Strain occurs the flexible board 134 of overhead gage 130 in the time that end panel 135 is subject to External Force Acting and relative bottom plate 133 is reversed, and after external force is cancelled, flexible board 134 returns to previous status.
The shell of breaker for device is assembled and is formed by the first housing 101 and the second housing 102, and the first housing 101 and the second housing 102 are fastening by rivet 112.Breaker for device has operating grip 103, the first binding post 107, the second binding post 111 and the bottom baffles 109 of the housing exterior of extending to, and bottom baffles 109 is embedded in the slotted eye 108 on the first housing 101 and the second housing 102.Breaker for device is installed by mounting nuts 104.
Lower baffle plate 136 comprises rotating shaft 138, middle part side plate 137, middle flexible board 139 and bottom plate 140.One end of flexible board 139 in the middle of rotating shaft 138 is connected to, the other end of flexible board 139 in the middle of bottom plate 140 is connected to, the both sides of flexible board 139 in the middle of middle part side plate 137 stretches out at rotating shaft 138 two ends places and is connected to.Lower baffle 136 is connected to the first housing 101 and the second housing 102 by rotating shaft 138, and lower baffle plate 136 rotates taking rotating shaft 138 as axle center.In the time that lower baffle plate 136 is oppressed by overhead gage 130, lower baffle 136 is done the rotation in certain limit around axle 138, and middle part side plate 137 is fitted with the upper surface of bottom baffles 109.In the time of plate 140 pressurized of bottom, middle part side plate 137 is fitted with the upper surface of bottom baffles 109, and elastic deformation occurs middle flexible board 139 and around axle 138 torsional deflections, after pressure is cancelled, middle flexible board 139 is reset to previous status.
The first housing 101 and the second housing 102 are provided with dividing plate 118, and dividing plate 118 and movable feeler lever 122, overhead gage 130 and the common formation semi-surrounding of lower baffle plate 136 structure, by the arc control device in breaker for device and operating mechanism and electromagnetic structure isolation.On the first housing 101 and the second housing 102, offer walkthrough mouth 113, staggered arc blow-out mouth 115 and the main vent 117 of offering.
Grid shape groove structure 141 comprises prominent footpath 143 and groove 142, and grid shape groove structure 141 is opened on the first housing 101 and the second housing 102.
With further reference to Fig. 1-Fig. 9.
First with reference to figure 1 and Fig. 2, the structure division of the breaker for device the present invention relates to comprises the fixed structure on motion structure part and housing, comprises offering of groove, aperture etc.The main shell of this breaker for device is assembled by the first housing 101 and the second housing 102, fastening through rivet 112.The parts that expose to outside the first housing 101 and the second housing 10210 mainly comprise operating grip 103, the first binding post 107 and the second binding post 111 and bottom baffles 109, and bottom baffles 109 is embedded in the slotted eye 108 on the first housing 101 and the second housing 102.Mounting nuts 104 is installed for the use of breaker for device.
In the present invention, the operating mechanism 105 in breaker for device and electromagnetic mechanism 106 all replace with dotted line frame.Movable feeler lever 122 is hinged by axle 120 and frame 121, the first hole 123 on two side plates 124 of movable feeler lever 122 and the second hole 125 join operation mechanism 105 and the overhead gage 130 keeping off in depressed structure respectively.Moving contact 126 riveted joints are fixed on the end of movable feeler lever 122, and torsion spring 119 one end taking axle 120 as mandrel are fixed in frame 121, and the other end is buckled in the button pawl 127 of movable feeler lever 122 to provide contact to open (comprising separating brake and dropout) needed torque.The fixed contact 110 matching with moving contact 126 is fixed on the second binding post 111, with the shell of whole breaker for device, comprises that the first housing 101 is relative fixing with the second housing 102.
Shown in figure 3, overhead gage 130 comprises two side plates 131, bottom plate 133, flexible board 134 and end panel 135.Bottom plate 133 is connected to one end of flexible board 134, and side plate 131 is connected to the both sides of bottom plate 135, and end panel 135 is connected to the other end of flexible board 134, and the inner side of side plate 131 has convex 132.Convex 132 on side plate 131 is buckled in the second hole 125 on movable feeler lever 122, is fitted simultaneously, thereby realize the fixing of upper plate washer 130 and movable feeler lever 122 by bottom plate 133 and the belly of movable feeler lever 122.Used time, can there is strain stressed work of end panel 135 in the flexible board 134 in overhead gage 130, its relative bottom plate 133 is reversed, and after external force is cancelled, flexible board 134 returns to previous status automatically.
Can with overhead gage 130 interoperations be lower baffle plate 136, shown in figure 4.Lower baffle plate 136 comprises rotating shaft 138, middle part side plate 137, middle flexible board 139 and bottom plate 140.One end of flexible board 139 in the middle of rotating shaft 138 is connected to, the other end of flexible board 139 in the middle of bottom plate 140 is connected to, the both sides of flexible board 139 in the middle of middle part side plate 137 stretches out at rotating shaft 138 two ends places and is connected to.Lower baffle 136 is fixed on the first housing 101 and the second housing 102 by rotating shaft 138, lower baffle 136 is done the rotation in certain limit around the shaft, in the time that lower baffle plate 136 is oppressed by overhead gage 130, lower baffle 136 138 is done certain rotation around the shaft, the bottom of two side plates 137 and the upper surface laminating that is embedded in the bottom baffles 109 in the slotted eye 108 of the first housing 101 and the second housing 102.Bottom plate 140 suffer oppression and the bottom of two middle part side plates 137 with the upper surface laminating of bottom baffles 109 after, there is elastic deformation in the middle flexible board 139 of lower baffle plate 136,138 one-tenth certain torsional deflections around the shaft, after oppressive force is cancelled, middle flexible board 139 is reset to former free form.
With reference to figure 5, Fig. 6 and Fig. 7 a and Fig. 7 b, the related structure of airflow control mechanism of breaker for device of the present invention also comprises: be arranged at the dividing plate 118 on the first housing 101 and the second housing 102.Dividing plate 118 and movable feeler lever 122, overhead gage 130 and the common formation semi-surrounding of lower baffle plate 136 structure, this semi-surrounding structure is isolated the operating mechanism of the relative circuit breaker of arc control device and electromagnetic structure.Meanwhile, the exhaust outlet of offering on the first housing 101 and the second housing 102 mainly contains walkthrough mouth 113, staggered arc blow-out mouth 115 and the main vent 117 of offering.Grid shape groove structure 141 is made up of prominent footpath 143 and groove 142, and grid shape groove structure 141 is opened on the housing of one-tenth relevant position, aforementioned upper and lower gas block panel both sides, is mainly used in weakening both sides gas leakage.
Operation principle of the present invention is as follows: while doing splitting or integrating motion by the movable feeler lever 122 of flexible overhead gage 130 and lower baffle 136 interoperation mechanism ends, namely in breaker for device breaking course, make gas in arc control device substantially isolate with operating mechanism 105 and electromagnetic mechanism 106.Leak portion gas and weakened by grid shape groove structure 141, air-flow forms vortex in groove.Due to viscous effect, when doing vorticla motion, air-flow body will consume kinetic energy, and while warp contacts with housing, and its temperature declines, thereby is not enough to other parts to form injury.Like this, the high-temperature gas producing in the time of breaking course is after sharply expanding, while impacting the semi-surrounding form that supreme lower baffle plate changes into, form bounce-back, concerning electric arc, have certain back pressure like this, thereby it is cut to force it to enter arc-chute 114, blows out so that extinguishes through arc blow-out mouth 115.In the time that electric arc just fires, because movable feeler lever 122 does not open to sub-gate position, overhead gage 130 does not open completely, so now there is larger blowback breach, easily cause high-temperature gas and charged particle to be altered to transmission mechanism and electromagnetic mechanism, so walkthrough gas port 113 is offered in the position that starts to separate with fixed contact 110 at moving contact 126, release a part of gas to reduce air pressure opening initial period, this has just been avoided gas to return altering.After movable feeler lever 122 is opened completely, form isolation structure, main air-flow is poured into main vent 117 through exhaust duct 116 and is discharged, the contraction that exhaust duct 116 and main vent 117 form---expansion and a crooked route, refrigerating gas and absorption charged particle largely, with shorten spray arc distance from, ensure the fail safe of breaker for device.Overhead gage 130 is coated on movable feeler lever 122 bellies, and in breaking course, when arc wandering, because overhead gage 110 is plastic part, electric arc capable of blocking prolongs movable feeler lever and alters for 122 times.
Utilize specific embodiment of the invention scheme to have:
Specific embodiments 1---the not breaker for device with auxiliary switch, as shown in Figure 5.
Specific embodiments 2---with the breaker for device of auxiliary switch, as shown in Figure 8 and Figure 9.
Specific embodiments 1:
In the time that breaker for device is not with auxiliary switch, the structure of the present invention under opening and closing state as shown in Figure 1 and Figure 2.Under gate-dividing state, two side plate 137 bottom surfaces of lower baffle 136 are spacing by the upper surface of bottom baffles 109.In making process, overhead gage 130 rotates around axle 120 with movable feeler lever 122, in the time that the end panel 135 of overhead gage 130 touches two side plates 137 of lower baffle plate 136.First order about lower baffle plate 136 138 corresponding rotations around the shaft, the bottom of two side plate 137 is fitted on bottom baffles 109.Along with being rotated further of movable feeler lever 122, the end panel 135 of overhead gage 130 is prolonged the upper surface slide of two side plates 137 of lower baffle plate 136,137 spacing guide effects of two side plates in process, the flexible board 134 of overhead gage 130 is with respect to 133 one-tenth certain torsions of its lower surface simultaneously, until moving contact 126 contacts with fixed contact 110, complete feed motion.In the time that movable contact rod 122 turns to certain angle, the lower surface 133 of overhead gage 130 contacts the bottom plate 140 of lower baffle plate 136, in the time further rotating, the lower surface 133 of overhead gage 130 is oppressed bottom plate 140 and the middle flexible board 139 of lower baffle plate 136 and 138 is done certain rotation around the shaft, until feed motion completes.Shown in figure 2, the flexible board of overhead gage 130 is deformed into 134 by 134 ', and the middle flexible board 139 ' of lower baffle plate 136 is deformed into 139.
In the time of disjunction or separating brake, with rotating backward of movable feeler lever 122, first discharge middle rods 139 and the bottom plate 140 of oppressed lower baffle plate 136, the end panel 135 of while overhead gage 130 is prolonged two side plates 137 and is slided, continue along with rotating, overhead gage 130 is full extension under the elastic reaction of himself, and isolation strip together with its flexible board 134 forms with lower baffle plate 136, prevents air-flow blowback.
Specific embodiments 2:
With the breaker for device of auxiliary switch, as shown in Figure 8 and Figure 9, referring to above-mentioned course of action and structure (as depicted in figs. 1 and 2) during not with auxiliary switch.Replace aforesaid bottom baffles 109 with microswitch component when mounted, this assembly comprises the sensitive switch 144 being set in plastic sheath 145.This assembly is installed in the position same with bottom baffles 109---in the groove 108 of the first housing 101 and the second housing 102.In making process, turn and go to certain angle at movable feeler lever 122, when the bottom plate 133 of overhead gage 130 is oppressed the bottom plate 140 of lower baffle plate 136, the flexible board 139 of lower baffle plate 136 and bottom plate 140 138 rotate around the shaft, two side plates 137 are fitted with the upper surface of plastic sheath 145, limited.Now the middle rods 139 of distortion is oppressed the button 146 of sensitive switch 144, until feed motion completes, the button state of sensitive switch 144 changes 146 into by 146 ', thereby realizes its function to circuit-breaker status instruction.Separating brake or breaking course are in contrast, in the time that movable feeler lever 122 rotates, first discharge middle flexible board 139 and the bottom plate 140 of lower baffle plate 136, discharge the button 146 of sensitive switch 144 simultaneously, along with further rotation, button 146 is reset to 146 ', and the middle flexible board 139 of lower baffle plate 136 resets, the flexible board 134 of overhead gage 130 stretches and resets under self elastic force effect, can be with the gear gas isolation structure of auxiliary switch interoperation thereby form.
The airflow control mechanism of breaker for device of the present invention can make the breaking arc of circuit breaker enter rapidly arc control device to avoid resilience.The airflow control mechanism of this breaker for device can stop high-temperature gas and metallic blowback, to reduce it, mechanism is caused to damage simultaneously.The airflow control mechanism of this breaker for device can obviously improve interrupting performance, life-span and the functional reliability of breaker for device.
Above-described embodiment is available to be familiar with person in the art and to realize or use of the present invention; those skilled in the art can be without departing from the present invention in the case of the inventive idea; above-described embodiment is made to various modifications or variation; thereby protection scope of the present invention do not limit by above-described embodiment, and it should be the maximum magnitude that meets the inventive features that claims mention.
Claims (10)
1. an airflow control mechanism for breaker for device, is characterized in that, comprising:
Overhead gage, upper plate washer is made by flexible material and is installed and be connected with movable feeler lever, and overhead gage is with movable feeler lever synchronization action;
Lower baffle plate, lower baffle is made by flexible material and is rotated around the axis, and lower baffle coordinates plate washer synchronously to seal at regional area in movable feeler lever opening procedure;
Grid shape groove structure, is located at the shell inner side of described breaker for device, grid shape groove structure weaken and gap, cooling movable feeler lever two sides in leakage current.
2. the airflow control mechanism of breaker for device as claimed in claim 1, is characterized in that,
Described movable feeler lever (122) is hinged by axle (120) and frame (121), on the side plate (124) of movable feeler lever (122), there is the first hole (123) and the second hole (125), the first hole (123) is connected to operating mechanism (105), and the second hole (125) are connected to described overhead gage (130).
3. the airflow control mechanism of breaker for device as claimed in claim 2, is characterized in that,
The end riveted joint moving contact (126) of described movable feeler lever (122), it is upper that one end of torsion spring (119) taking axle (120) as mandrel is fixed on frame (121), and the other end is buckled in the button pawl (127) of movable feeler lever (122) to provide contact to open needed torque;
Fixed contact (110) coordinates with moving contact (126), and it is upper that fixed contact (110) is fixed on the second binding post (111), and fixed contact (110) is relative fixing with the shell of described breaker for device.
4. the airflow control mechanism of breaker for device as claimed in claim 2, is characterized in that,
Described overhead gage (130) comprises flexible board (134), bottom plate (133), side plate (131) and end panel (135), bottom plate (133) is connected to one end of flexible board (134), side plate (131) is connected to the both sides of bottom plate (133), end panel (135) is connected to the other end of flexible board (134), and the inner side of side plate (131) has convex (132);
Described upper plate washer (130) is installed by the convex (132) on side plate (131) in the second hole (125) buckling on movable feeler lever (122); Described bottom plate (133) is fitted so that overhead gage (130) is fixed to movable feeler lever (122) with the belly of movable feeler lever (122); There is strain bottom plate (133) torsion relatively in the flexible board (134) of overhead gage (130), flexible board after external force is cancelled (134) returns to previous status in the time that end panel (135) is subject to External Force Acting.
5. the airflow control mechanism of breaker for device as claimed in claim 1, it is characterized in that, the shell of described breaker for device is equipped with and is formed by the first housing (101) and the second housing (102), and the first housing (101) and the second housing (102) are fastening by rivet (112);
Described breaker for device has operating grip (103), the first binding post (107), the second binding post (111) and the bottom baffles (109) of the housing exterior of extending to, and described bottom baffles (109) is embedded in the slotted eye (108) on the first housing (101) and the second housing (102);
Described breaker for device is installed by mounting nuts (104).
6. the airflow control mechanism of breaker for device as claimed in claim 5, is characterized in that,
Described lower baffle plate (136) comprises rotating shaft (138), middle part side plate (137), middle flexible board (139) and bottom plate (140); One end of flexible board (139) in the middle of rotating shaft (138) is connected to, the other end of flexible board (139) in the middle of bottom plate (140) is connected to, the both sides of flexible board (139) in the middle of middle part side plate (137) stretches out at rotating shaft (138) two ends place and is connected to;
Lower baffle (136) is connected to the first housing (101) and the second housing (102) by rotating shaft (138), lower baffle plate (136) rotates taking rotating shaft (138) as axle center, in the time that lower baffle plate (136) is subject to overhead gage (130) compressing, lower baffle (136) is done the rotation in certain limit around axle (138), and middle part side plate (137) is fitted with the upper surface of bottom baffles (109);
In the time of bottom plate (140) pressurized, middle part side plate (137) is fitted with the upper surface of bottom baffles (109), there is elastic deformation and around axle (138) torsional deflection in middle flexible board (139), after pressure is cancelled, middle flexible board (139) is reset to previous status.
7. the airflow control mechanism of breaker for device as claimed in claim 1, it is characterized in that, the shell of described breaker for device is equipped with and is formed by the first housing (101) and the second housing (102), and the first housing (101) and the second housing (102) are fastening by rivet (112);
Described breaker for device has operating grip (103), the first binding post (107), the second binding post (111) and the microswitch component of the housing exterior of extending to, described microswitch component is embedded in the slotted eye (108) on the first housing (101) and the second housing (102), described microswitch component comprises the sensitive switch (144) being set in plastic sheath (145), and sensitive switch (144) has button (146);
Described breaker for device is installed by mounting nuts (104).
8. the airflow control mechanism of breaker for device as claimed in claim 7, is characterized in that,
Described lower baffle plate (136) comprises rotating shaft (138), middle part side plate (137), middle flexible board (139) and bottom plate (140); One end of flexible board (139) in the middle of rotating shaft (138) is connected to, the other end of flexible board (139) in the middle of bottom plate (140) is connected to, the both sides of flexible board (139) in the middle of middle part side plate (137) stretches out at rotating shaft (138) two ends place and is connected to;
Lower baffle (136) is connected to the first housing (101) and the second housing (102) by rotating shaft (138), and lower baffle plate (136) rotates taking rotating shaft (138) as axle center;
When the bottom plate (133) of overhead gage (130) is oppressed the bottom plate (140) of lower baffle plate (136), the flexible board (139) of lower baffle plate (136) and bottom plate (140) around the shaft (138) rotate, two side plates (137) are spacing with the upper surface laminating of plastic sheath (145), the button (146) of middle rods (139) compressing sensitive switch (144);
Discharge middle flexible board (139) and the bottom plate (140) of lower baffle plate (136), discharge the button (146) of sensitive switch (144), button (146) resets, the middle flexible board (139) of lower baffle plate (136) resets, and the flexible board (134) of overhead gage (130) stretches and resets under self elastic force effect.
9. the airflow control mechanism of the breaker for device as described in any one in claim 5-8, it is characterized in that, the first housing (101) and the second housing (102) are provided with dividing plate (118), dividing plate (118) forms semi-surrounding structure jointly with movable feeler lever (122), overhead gage (130) and lower baffle plate (136), by the arc control device in breaker for device and operating mechanism and electromagnetic structure isolation;
On described the first housing (101) and the second housing (102), offer walkthrough mouth (113), staggered arc blow-out mouth (115) and the main vent (117) of offering.
10. the airflow control mechanism of the breaker for device as described in any one in claim 5-8, is characterized in that,
Described grid shape groove structure (141) comprises prominent footpath (143) and groove (142), and grid shape groove structure (141) is opened on the first housing (101) and the second housing (102).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110223027.3A CN102915892B (en) | 2011-08-04 | 2011-08-04 | Airflow control mechanism for equipment circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110223027.3A CN102915892B (en) | 2011-08-04 | 2011-08-04 | Airflow control mechanism for equipment circuit breaker |
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| CN102915892A CN102915892A (en) | 2013-02-06 |
| CN102915892B true CN102915892B (en) | 2014-09-17 |
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| CN201110223027.3A Active CN102915892B (en) | 2011-08-04 | 2011-08-04 | Airflow control mechanism for equipment circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9412542B2 (en) * | 2014-02-25 | 2016-08-09 | Sensata Technologies, Inc. | Particulate and pressure redirection shield for an electric circuit breaker |
| CN106531584B (en) * | 2016-11-30 | 2018-01-19 | 浙江诚通电力科技有限公司 | A kind of mechanical discontinuity formula arc-extinguishing mechanism of power circuit breaker |
| CN106783294B (en) * | 2016-11-30 | 2018-08-24 | 陶如意 | A kind of mechanical extruding type arc-extinguishing mechanism of power circuit breaker |
| CN114420517B (en) * | 2022-03-31 | 2022-06-24 | 晟望电气有限公司 | Sulfur hexafluoride gas insulation switch |
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| CN202189745U (en) * | 2011-08-04 | 2012-04-11 | 上海电科电器科技有限公司 | Airflow control mechanism for equipment circuit breaker |
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| JP2965332B2 (en) * | 1990-07-10 | 1999-10-18 | テンパール工業株式会社 | Circuit breaker |
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| CN202189745U (en) * | 2011-08-04 | 2012-04-11 | 上海电科电器科技有限公司 | Airflow control mechanism for equipment circuit breaker |
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| JP特开平4-71134A 1992.03.05 |
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