CN102779679A - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN102779679A CN102779679A CN2012102587656A CN201210258765A CN102779679A CN 102779679 A CN102779679 A CN 102779679A CN 2012102587656 A CN2012102587656 A CN 2012102587656A CN 201210258765 A CN201210258765 A CN 201210258765A CN 102779679 A CN102779679 A CN 102779679A
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- circuit breaker
- ambulatory splint
- knife switch
- clamping plate
- blade
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Abstract
The invention discloses a circuit breaker which comprises a knife switch piece, a fixed clamping plate and a movable clamping plate capable of being matched to clamp the knife switch piece and a baffle arranged on the outer sides of the fixed clamping plate and the movable clamping plate. The circuit breaker further comprises a compression spring arranged between the baffle and the movable clamping plate, and two ends of the compression spring respectively abut against the baffle and the movable clamping plate. According to the circuit breaker, the knife switch piece and the movable clamping plate adopt the spring compression mode to improve the mode in the prior structure that the movable clamping plate presses the knife switch piece only by self elasticity, and enables extrusion force of the movable clamping plate to the knife switch piece to be remarkably increased, namely the movable clamping plate can still ensure connection firmness between the knife switch piece and the movable clamping plate when anti-fatigue performance of the movable clamping plate is reduced. The circuit breaker improves working reliability and prolongs service.
Description
Technical field
The present invention relates to the electrical equipment control technical field, more particularly, a kind of circuit breaker such as relate to.
Background technology
Circuit breaker is deciliter switch in control apparatus loop, is divided into primary cut-out and low-voltage circuit breaker by its scope of application.Wherein, Primary cut-out (or claim high-voltage switch gear) it not only can cut off or the closed high circuit in no-load current and load current; And when system breaks down, can also play the effect of protecting power consumption equipment, cut off overload electric current and short circuit current in the circuit.It has fairly perfect arc extinguishing structure and enough cutout abilities, guarantee is provided for the safe transport and the use of high-tension current.
In the prior art; The HVDC circuit breaker mainly comprises base plate, porcelain vase, blade of knife switch, rear base, baffle plate, self rubber-like strap and ambulatory splint; In the process of closing a floodgate; After blade of knife switch gets into the gap between strap and the ambulatory splint; Strap and ambulatory splint push and are fixed in blade of knife switch between strap and the ambulatory splint through the elasticity that self material had, realizing contacting of blade of knife switch and strap and ambulatory splint, and then the conducting of realization circuit.But; After circuit breaker uses long period of time, through repeatedly the combined floodgate and the operation of separating brake, the unavoidable meeting of anti-fatigue performance of strap and ambulatory splint self weakening more or less; Make the blade of knife switch intensity of force that is squeezed reduce; In case the extruding force deficiency makes blade of knife switch be fixed between strap and the ambulatory splint, and circuit is opened circuit, produce bigger influence with using for the safe transport of high-tension current.
In sum; How a kind of circuit breaker is provided, imposes on the extruding force of blade of knife switch to realize raising strap and ambulatory splint, and then improve the functional reliability of circuit breaker; Prolonging the useful life of circuit breaker, is present those skilled in the art's problem demanding prompt solution.
Summary of the invention
In view of this, the invention provides a kind of circuit breaker, improved the extruding force that strap and ambulatory splint impose on blade of knife switch, and then improved the functional reliability of circuit breaker, prolonged the useful life of circuit breaker.
In order to achieve the above object, the present invention provides following technical scheme:
A kind of circuit breaker comprises blade of knife switch, the strap that can cooperate the said blade of knife switch of clamping and ambulatory splint, and the baffle plate that is arranged on the said strap and the ambulatory splint outside, also comprises:
Be arranged between said baffle plate and the said ambulatory splint, and the holddown spring that offsets with said baffle plate and said ambulatory splint respectively of two ends.
Preferably, in the above-mentioned circuit breaker, also comprise being arranged on said holddown spring bottom the arc flexure strip that two ends link to each other with the rear base of said ambulatory splint and said circuit breaker respectively through bolt.
Preferably, in the above-mentioned circuit breaker, also comprise the back-moving spring that is arranged between said strap and the said baffle plate and offsets with said strap and said baffle plate.
Preferably, in the above-mentioned circuit breaker, the top of said holddown spring and said back-moving spring is provided with protector, and said protector does not contact with ambulatory splint with said strap.
Preferably, in the above-mentioned circuit breaker, the semicircle sheath of said protector for steel pipe is formed along its axis cutting.
Preferably, in the above-mentioned circuit breaker, the insulator of said circuit breaker is a silica gel spiral insulation column.
Preferably, in the above-mentioned circuit breaker, the preceding base of said circuit breaker and said rear base are arranged on the base plate of said circuit breaker through said silica gel spiral insulation column respectively.
Preferably, in the above-mentioned circuit breaker, also comprise being arranged on the said base plate self-locking frame that is in the said blade of knife switch of separating brake shape body with placement.
Preferably, in the above-mentioned circuit breaker, also comprise the striking contact that is arranged on the said rear base.
Preferably, in the above-mentioned circuit breaker, comprise that also the top is provided with hook, be used to operate the cylindrical insulating bar of said blade of knife switch combined floodgate, separating brake.
In the circuit breaker provided by the invention, on the basis of conventional circuit breaker, set up holddown spring; This holddown spring is arranged between baffle plate and the ambulatory splint, and all offsets with baffle plate and ambulatory splint, when needs close a floodgate; Blade of knife switch can apply an extruding force away from blade of knife switch to ambulatory splint in the process that enters into small gap between ambulatory splint and the strap; Make the ambulatory splint stress deformation, and then extruding is arranged on the holddown spring between ambulatory splint and the baffle plate, holddown spring can apply a reverse elastic force and give ambulatory splint after being squeezed; Make ambulatory splint reversal deformation under the effect of reverse elastic force, thereby compress blade of knife switch.Circuit breaker provided by the invention; Adopt the mode of spring compression between blade of knife switch and the ambulatory splint; To improve the mode of the elastic compression blade of knife switch that ambulatory splint only has with self in the original structure, make ambulatory splint significantly increase, even ambulatory splint also can guarantee the connectivity robustness of blade of knife switch and ambulatory splint when anti-fatigue performance descends to the extruding force of blade of knife switch; Improve the functional reliability of circuit breaker, prolong circuit breaker useful life.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The front view of the circuit breaker that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is the right view of Fig. 1.
Among above Fig. 1-Fig. 2:
Blade of knife switch 1, strap 2, ambulatory splint 3, baffle plate 4, holddown spring 5, rear base 6, flexure strip 7, back-moving spring 8, protector 9, silica gel spiral insulation column 10, base plate 11.
Embodiment
In order further to understand the present invention, below in conjunction with embodiment the preferred embodiment for the present invention is described, describe just in order to further specify feature and advantage of the present invention but should be appreciated that these, rather than to the restriction of claim of the present invention.
The invention provides a kind of circuit breaker, improved the extruding force that strap and ambulatory splint impose on blade of knife switch, and then improved the functional reliability of circuit breaker, prolonged the useful life of circuit breaker.
Circuit breaker provided by the invention has single blade of knife switch and two kinds of structures of double-gate blade, and present embodiment is that example describes with single blade of knife switch structure, cannot it be interpreted as the absolute qualification to interest field.
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Circuit breaker as depicted in figs. 1 and 2, that the embodiment of the invention provides comprises blade of knife switch 1, can cooperate the strap 2 and the ambulatory splint 3 of clamping blade of knife switch 1, and the baffle plate 4 that is arranged on the strap 2 and ambulatory splint 3 outsides, also comprises:
Be arranged between baffle plate 4 and the ambulatory splint 3, and the holddown spring 5 that offsets with baffle plate 4 and ambulatory splint 3 respectively of two ends.
In the circuit breaker that present embodiment provides; On the basis of conventional circuit breaker, set up holddown spring 5, this holddown spring 5 is arranged between baffle plate 4 and the ambulatory splint 3; And all offset with baffle plate 4 and ambulatory splint 3; When needs closed a floodgate, blade of knife switch 1 can apply an extruding force away from blade of knife switch 1 in the process that enters into small gap between ambulatory splint 3 and the strap 2 to ambulatory splint 3, made ambulatory splint 3 stress deformations; And then extruding is arranged on the holddown spring 5 between ambulatory splint 3 and the baffle plate 4; Holddown spring 5 can apply a reverse elastic force and give ambulatory splint 3 after being squeezed, make ambulatory splint 3 reversal deformation under the effect of reverse elastic force, thereby compresses blade of knife switch 1.Circuit breaker provided by the invention; Adopt the mode of spring compression between blade of knife switch 1 and the ambulatory splint 3; To improve the mode of the elastic compression blade of knife switch that ambulatory splint only has with self in the original structure, make the extruding force of 3 pairs of blade of knife switch 1 of ambulatory splint significantly increase, even ambulatory splint 3 also can guarantee the connectivity robustness of blade of knife switch 1 and ambulatory splint 3 when anti-fatigue performance descends; Improve the functional reliability of circuit breaker, prolong circuit breaker useful life.
In order further to optimize technique scheme, in the circuit breaker that present embodiment provides, also comprise being arranged on holddown spring 5 bottoms the arc flexure strip 7 that two ends link to each other with the rear base 6 of ambulatory splint 3 and circuit breaker respectively through bolt.As shown in Figure 2, in the present embodiment,, set up rubber-like flexure strip 7 in order further to strengthen ambulatory splint 3 and the connectivity robustness of blade of knife switch 1 when contacting.In addition, less with respect to the lateralarea of ambulatory splint 3 with the corresponding surface that holddown spring 5 is provided with at ambulatory splint 3, it is less that promptly ambulatory splint 3 bears the lifting surface area of holddown spring 5 bounces; Ambulatory splint 3 discontinuity equalizations; Thereby make ambulatory splint 3 when receiving bounce, it influences the connectivity robustness of ambulatory splint 3 and rear base 6 with respect to the perpendicular run-off the straight; So bottom at holddown spring 5; The link that is ambulatory splint 3 and rear base 6 is provided with flexure strip 7, makes ambulatory splint 3 when receiving holddown spring 5 bounce effects, also receives the elastic force of flexure strip 7; Farthest reduce the inclined degree of ambulatory splint 3, further prolong the useful life of the circuit breaker that present embodiment provides.In the present embodiment, the shape of flexure strip 7 is set to arc, and flexure strip 7 is that bolt is connected with the connected mode of ambulatory splint 3, rear base 6.Under the prerequisite that does not influence the normal operation of circuit breaker that present embodiment provides, the shape of flexure strip 7, can also be other shape and connected mode with the connected mode of ambulatory splint 3, rear base 6.
In the present embodiment, also comprise the back-moving spring 8 that is arranged between strap 2 and the baffle plate 4 and offsets with strap 2 and said baffle plate 4.Strap 2 is compared with ambulatory splint 3, though its deformation coefficient is significantly smaller than the deformation coefficient of ambulatory splint 3, it equally deformation can take place when stressed; Make blade of knife switch 1 reduce with the effect that is connected of ambulatory splint 3, strap 2, so, for further optimisation technique scheme; In the circuit breaker that present embodiment provides; Between strap 2 and baffle plate 4, be provided with back-moving spring 8, farthest reduced the deformation quantity of strap 2, make blade of knife switch 1 when entering between strap 2 and the ambulatory splint 3; The extruding force that receives can not reduce because of the deformation quantity of strap 2 is relatively large, guarantees that blade of knife switch 1 can receive enough extruding forces.
In addition; In the circuit breaker that present embodiment provides, holddown spring 5 can have multiple different set-up mode with back-moving spring 8: the two ends of holddown spring 5 can be distinguished directly and are connected with ambulatory splint 3 with baffle plate 4, make holddown spring 5 unsettled being arranged between baffle plate 4 and the ambulatory splint 3; The two ends of back-moving spring 8 can be distinguished directly and are connected with strap 2 with baffle plate 4; Make back-moving spring 8 unsettled being arranged between baffle plate 4 and the strap 2, perhaps, the two ends of holddown spring 5 only are to offset with baffle plate 4 and ambulatory splint 3; But do not connect; Holddown spring 5 is arranged on the rear base 6 through strutting piece, and the two ends of back-moving spring 8 equally only offset with strap 2 with baffle plate 4 and are not connected, and back-moving spring 8 is arranged on the rear base 6 through strutting piece.Certainly, except above-mentioned set-up mode, holddown spring 5 can also be provided with through other mode with back-moving spring 8.
Further, the top of holddown spring 5 and back-moving spring 8 is provided with protector 9, and protector 9 does not contact with ambulatory splint 3 with strap 2.Top at holddown spring 5 and back-moving spring 8 is provided with protector 9; Can be so that holddown spring 5 and back-moving spring 8 avoid receiving the influence of outside poor environments such as rain, snow; To play dampproof effect; Make the fatigue resistance of spring keep the longer time, the working life of the circuit breaker that the prolongation present embodiment provides.Protector 9 does not contact with ambulatory splint 3 with strap 2; Be because strap 2 with ambulatory splint 3 elastic deformation can take place; Protector 9 is when being provided with; Need to reserve strap 2 and the activity space of ambulatory splint 3 when elastic deformation takes place, and then normal combined floodgate of avoiding present embodiment is provided of circuit breaker impacts.
Above-mentioned protector 9 is specially the semicircle sheath that steel pipe is formed along its axis cutting.The concrete structure of protector 9 has multiple different form; Present embodiment does not limit this; The present embodiment preferred construction is semicircle sheath; It also can be for holding back-moving spring 8 and allowing its flexible tubular sheath, and the concrete structure of protector 9 can be selected various structure according to the difference of environment for use.
The bowl-shape insulator of porcelain in the conventional circuit breaker, the insulator of the circuit breaker that present embodiment provides is silica gel spiral insulation column 10, and is as depicted in figs. 1 and 2.With respect to bowl-shape insulator, the advantage of the silica gel spiral insulation column 10 that present embodiment provides is: material is light, non-friable, insulation good and anti-thunderbolt.Silica gel is less because of its density, and the quality of equal volume silica gel is much smaller than the quality of pottery, so be that the quality of circuit breaker of insulator is a lot of less with respect to the circuit breaker quality of spark plug porcelain insulator with silica gel, helps the sale and the transportation of the circuit breaker that present embodiment provides.Silica gel has higher mechanical strength, and with respect to the pottery of fragility, it has higher impact resistance.Because the physics of silica gel and chemical property are all more stable, so its insulation property are better, even receiving when being struck by lightning, its physics and chemical property still people are more stable, so it can play the effect of anti-thunderbolt equally.
As shown in Figure 1, the preceding base of circuit breaker and rear base 6 are arranged on the base plate 11 of circuit breaker through silica gel spiral insulation column 10 respectively.
In the circuit breaker that present embodiment provides, also comprise: be arranged on the base plate 11 the self-locking frame that is in the blade of knife switch 1 of separating brake shape body with placement; Be arranged on the striking contact on the rear base 6; The top is provided with hook, is used to operate the cylindrical insulating bar of blade of knife switch 1 combined floodgate, separating brake.
Be the optional feature of the circuit breaker that present embodiment provides with upper-part, it can install additional or remove according to different requirements of customers.Wherein, the self-locking frame is a placing device of placing the blade of knife switch 1 behind the separating brake, and it can be fixed on blade of knife switch 1 on the self-locking frame, avoids blade of knife switch 1 behind separating brake, to be moved and causes electric accident, further improves the security performance of the circuit breaker that present embodiment provides; When circuit breaker carries out separating brake; Tend between blade of knife switch 1 and ambulatory splint 3 and strap 2, form electric arc, it can be along with blade of knife switch 1 Lock-out with the increase of ambulatory splint 3 and strap 2 distances, and the electric arc that still produces still can affect to circuit; So the striking contact need be set; Eliminating the influence to circuit, the effect of striking contact is that the electric arc that produces during with separating brake is introduced in the ground wire, avoids it to get into circuit; Elimination is to the influence of circuit, further optimizes the technical scheme of the circuit breaker that present embodiment provides; Insulating bar is to carry out the parts that divide, close a floodgate; Make the hook on its top catch on blade of knife switch 1; Move blade of knife switch 1 through controlling insulating bar, and then realize branch, the combined floodgate of circuit breaker, its mode with direct control blade of knife switch 1 is compared has higher fail safe; Can effectively protect operating personnel's personal safety, the generation of the phenomenon of avoiding getting an electric shock.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. circuit breaker; Comprise blade of knife switch (1), can cooperate the strap (2) and the ambulatory splint (3) of the said blade of knife switch of clamping (1); And the baffle plate (4) that is arranged on the said strap (2) and ambulatory splint (3) outside, it is characterized in that, also comprise:
Be arranged between said baffle plate (4) and the said ambulatory splint (3), and the holddown spring (5) that offsets with said baffle plate (4) and said ambulatory splint (3) respectively of two ends.
2. circuit breaker according to claim 1 is characterized in that, also comprises being arranged on said holddown spring (5) bottom the arc flexure strip (7) that two ends link to each other with the rear base (6) of said ambulatory splint (4) and said circuit breaker respectively through bolt.
3. circuit breaker according to claim 1 is characterized in that, also comprises the back-moving spring (8) that is arranged between said strap (2) and the said baffle plate (4) and offsets with said strap (2) and said baffle plate (4).
4. circuit breaker according to claim 3; It is characterized in that; The top of said holddown spring (5) and said back-moving spring (8) is provided with protector (9), and said protector (9) does not contact with ambulatory splint (3) with said strap (2).
5. circuit breaker according to claim 4 is characterized in that, the semicircle sheath of said protector (9) for steel pipe is formed along its axis cutting.
6. circuit breaker according to claim 1 is characterized in that, the insulator of said circuit breaker is a silica gel spiral insulation column (10).
7. circuit breaker according to claim 6 is characterized in that, the preceding base of said circuit breaker and said rear base (6) are arranged on the base plate (11) of said circuit breaker through said silica gel spiral insulation column (10) respectively.
8. circuit breaker according to claim 7 is characterized in that, comprises that also being arranged on said base plate (11) goes up the self-locking frame that is in the said blade of knife switch (1) of separating brake shape body with placement.
9. circuit breaker according to claim 2 is characterized in that, also comprises the striking contact that is arranged on the said rear base (6).
10. according to any described circuit breaker among the claim 1-9, it is characterized in that, comprise that also the top is provided with hook, be used to operate the cylindrical insulating bar of said blade of knife switch (1) combined floodgate, separating brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102587656A CN102779679A (en) | 2012-07-24 | 2012-07-24 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102587656A CN102779679A (en) | 2012-07-24 | 2012-07-24 | Circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102779679A true CN102779679A (en) | 2012-11-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102587656A Pending CN102779679A (en) | 2012-07-24 | 2012-07-24 | Circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102779679A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810214A (en) * | 2015-04-17 | 2015-07-29 | 沈根荣 | Mechanical direct current circuit breaker capable of being used in electricity or electronic systems and electric machine |
| CN111681901A (en) * | 2020-06-24 | 2020-09-18 | 广东电网有限责任公司东莞供电局 | Isolation switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2313292Y (en) * | 1997-07-28 | 1999-04-07 | 刘运久 | Outdoor ac. high-voltage fall-down-type thermal element |
| CN2545696Y (en) * | 2002-04-19 | 2003-04-16 | 吉林省达美实业有限责任公司电器设备制造厂 | Sheath type DC circuit breaker |
| CN101345157A (en) * | 2008-04-24 | 2009-01-14 | 南京因泰莱配电自动化设备有限公司 | Vacuum circuit breaker on 24kV outdoor column |
| CN201985012U (en) * | 2010-11-08 | 2011-09-21 | 林志艺 | Edge structure of alternating current (AC) high voltage isolator |
-
2012
- 2012-07-24 CN CN2012102587656A patent/CN102779679A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2313292Y (en) * | 1997-07-28 | 1999-04-07 | 刘运久 | Outdoor ac. high-voltage fall-down-type thermal element |
| CN2545696Y (en) * | 2002-04-19 | 2003-04-16 | 吉林省达美实业有限责任公司电器设备制造厂 | Sheath type DC circuit breaker |
| CN101345157A (en) * | 2008-04-24 | 2009-01-14 | 南京因泰莱配电自动化设备有限公司 | Vacuum circuit breaker on 24kV outdoor column |
| CN201985012U (en) * | 2010-11-08 | 2011-09-21 | 林志艺 | Edge structure of alternating current (AC) high voltage isolator |
Non-Patent Citations (1)
| Title |
|---|
| 安阳: "高压配送绝缘体用硅橡胶材料", 《现代橡胶技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810214A (en) * | 2015-04-17 | 2015-07-29 | 沈根荣 | Mechanical direct current circuit breaker capable of being used in electricity or electronic systems and electric machine |
| CN111681901A (en) * | 2020-06-24 | 2020-09-18 | 广东电网有限责任公司东莞供电局 | Isolation switch |
| CN111681901B (en) * | 2020-06-24 | 2022-07-29 | 广东电网有限责任公司东莞供电局 | Isolation switch |
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Application publication date: 20121114 |