CN205177690U - Three station load switch in double break mouth - Google Patents
Three station load switch in double break mouth Download PDFInfo
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- CN205177690U CN205177690U CN201520873939.9U CN201520873939U CN205177690U CN 205177690 U CN205177690 U CN 205177690U CN 201520873939 U CN201520873939 U CN 201520873939U CN 205177690 U CN205177690 U CN 205177690U
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- load switch
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Abstract
The utility model relates to a power switchgear technical field, especially a three station load switch in double break mouth. To present three station load switch move sword hilted broadsword head, moment drive mode, single arc suppressing coil, brought the operating mechanism complicated, move the problem that blade holder wearing and tearing and contact were ablated, the utility model discloses a design of double knives head, rotatory insulating spindle drive moves the novel structure of sword motion to adopt two arc suppressing coil arc extinguishings. Insulating axle adopts the segmentation composite mode, has solved the mould and has processed problem complicated and hot flow shape. The beneficial effects of the utility model are that: the double break mouth designs, has optimized the field distribution of switch sword, has shortened quenching time, has improved electrical safety nature, has prolonged load switch's life.
Description
Technical field
The utility model relates to power switchgear technical field, particularly a kind of three-stations load switch of double-fracture structure.
Background technology
In power distribution network power switchgear, the moving knife of three-stations load switch is connected to moving knife seat in one end, and the middle part of moving knife has hole cylinder lever connecting rod, forms the arm of force by pull bar and moving knife seat pivot point, utilizes moment to drive the motion of moving knife.Document CN104967009A discloses the said structure of movable switch knife, and insulated tension pole one end is connected with isolation switch blade, is realized the rotation of isolation switch blade by the horizontal movement of insulated tension pole.Document CN203596308U discloses a kind of rotary moving knife structure, adopts moving knife one end dress on the rotary shaft, drives moving knife to rotate the combined floodgate, the separating brake that realize switch by operation rotating shaft.The major defect of existing three-station: need to adopt circular arc or spherical manner between the electric-conductor that 1, moving knife is connected with pivot point and increase the reliability that spring ensures to connect, joint face also exists wearing and tearing thus increases loop resistance.2, moving knife seat or rotating shaft need to connect conduction copper piece, and Electric Field Distribution is complicated.3, adopting single arc suppression coil or arc-chute arc extinguishing, still there is ablation phenomen in contact and quiet cutter.
Summary of the invention
The purpose of this utility model is to provide a kind of double-fracture three-stations load switch, solves the problem that connection reliability is not enough, Electric Field Distribution is complicated of existing moving knife and contact and quiet cutter and still there is the problems such as ablation, improve electrical security.
In order to solve the problem, the technical solution of the utility model is: a kind of double-fracture three-stations load switch, comprise isolation beam 6 under main connecting plate 1, shaft insulation 2, the left isolation beam of conductive plate 3, conductive plate 5, conductive plate, main connecting plate isolation beam 7, geostationary cutter 8, it is characterized in that: conductive plate 5 has fixed contact 5.2 under the left fixed contact 5.1 of conductive plate and conductive plate, the left fixed contact of conductive plate 5.1 is fixed on the left isolation beam 3 of conductive plate, and under conductive plate, fixed contact 5.2 to be fixed under conductive plate on isolation beam 6; Main connecting plate 1 is fixed on main connecting plate isolation beam 7, is provided with symmetrical two contact blades 2.5 in the middle of shaft insulation 2; Main arc suppression coil 1.1 is fixed on main connecting plate 1, and main arc suppression coil 1.1 has main striking tongue 1.2; Be connected with time arc suppression coil 5.3 under conductive plate below fixed contact 5.2, secondary arc suppression coil 5.3 has secondary striking tongue 5.4.Under main connecting plate 1, the left fixed contact of conductive plate 5.1, conductive plate the center line of fixed contact 5.2, geostationary cutter 8 and the center line of symmetrical two contact blades 2.5 in the same plane.Main connecting plate (1) is that level side arranges (as Fig. 1) when positive apparent direction.
Shaft insulation 2 is combined successively by axle front end 2.1, connecting lever 2.2, shaft rear end 2.3.Shaft insulation 2(Fig. 3) main body is inserted in the spline shape flange sleeve of connecting lever 2.2 one end by axle front end 2.1 spline shape flange shaft, is inserted in totally three connecting levers 2.2 continuously, then connect shaft rear end 2.3 and complete; Be provided with the two contact blade 2.5 of two pieces in each connecting lever 2.2 chamber and be fixed on connecting lever 2.2 with pin 2.4; Two contact blade 2.5 two ends blade support member 2.6 supports, and puts disc spring nut tightening with screw, and disc spring is located at outside two contact blade 2.5.3 connecting levers 2.2 in the middle part of shaft insulation 2, respectively to A, B, C three-phase of inductive switch.One end, axle front end 2.1 is circular shaft, and has the connecting port docked with operating mechanism.Axle front end 2.1 other end is spline shape flange shaft.Connecting lever 2.2 one end is provided with spline shape flange sleeve, and the other end is spline shape flange shaft.Shaft rear end 2.3 one end is provided with spline shape flange sleeve, and the other end is circular shaft.
The spline shape flange sleeve of connecting lever 2.2 is provided with inner groovy 2.28 and interior double wedge 2.29, and the spline shape flange shaft of connecting lever 2.2 is provided with outer double wedge 2.21, outer groove 2.22 and flange face 2.23.Inner groovy 2.28 coordinates with outer double wedge 2.21, and interior double wedge 2.29 coordinates with outer groove 2.22.Spline shape flange shaft can adopt four teeth or six teeth or octadentate structure, can symmetrical or asymmetric distribution.Interior reinforcement 2.27 is provided with in spline shape flange sleeve and spline shape flange shaft.Be provided with square through hole 2.25 in the middle of connecting lever 2.2, two ends are provided with pin hole 2.24.Reinforcement can also be increased in square through hole 2.25.Outside 4 faces are added with outer reinforcement 2.26 to square through hole 2.25 respectively.Pin hole 2.24 is for fixing two contact blade 2.5.
Respectively there are two contacts, 2.51, supported hole 2.52 and a fixing hole 2.53 in two contact blade 2.5 two ends.Center, two contact blade 2.5 two ends respectively has a seam, extends to fixing hole 2.53.Contact 2.51 can be the special contact of riveted joint power switch, also can be two contact blade 2.5 punch formings, and carry out sclerosis and silver-plated process, improve its electric conductivity and resistance to wear.When not cracking in center, two contact blade 2.5 two ends, because assembling exists tolerance and error, 4 contacts on two contact blade 2.5 may contact uneven, even have 1 to 2 contact unsettled, bring the problem of loose contact, and cause loop resistance to increase, heating is serious.In order to head it off, respectively having a seam in center, two contact blade 2.5 two ends, to remain valid with quiet cutter by the pressure of spring separately and is connected in two contacts.The groove of the long 50 ~ 80mm of wide 2 ~ 3mm is respectively had in the middle of the contact of two contact blade (2.5) two ends.Calculate with the contact pressure that may apply according to blade material and thickness thereof, being advisable to supported hole centre distance 20 millimeters to 40 millimeters in contact 2.51 center, is advisable to fixing hole 2.53 centre distance 50 millimeters to 80 millimeters in contact 2.51 center.Contact 2.51 center to supported hole center preferred distance 30 millimeters, contact 2.51 center is to fixing hole 2.53 centre distance preferably 65 millimeters.
Shaft insulation 2 is adopted plastics to add glass fibre and is formed by Mould Machining.Axle front end 2.1, connecting lever 2.2, shaft rear end 2.3 are processed by Shooting Technique by mould respectively.Shaft insulation 2 also can take unitary mould to process, but Design of Dies is more complicated, because length is longer simultaneously after processing, easily causes occurring local contraction metaboly, affects the quality of product.Glass fibre improves the intensity of plastics, decreases thermoplastic deformation.Plastics, glass fibre are all insulating material, solve the phase insulation problem of switch.
Movable switch knife assembly method: 1., 2 two contact blades 2.5 and connecting lever 2.2 are cleaned clean; 2., by relative for 2 two contact blade 2.5 contacts, and the square opening of connecting lever 2.2 is drained into; 3., with pin 2.4 through pin hole 2.24, then pass the fixing hole 2.53 of two contact blade 2.5, pass and steady pin 2.4 from another side; 4., between the supported hole 2.52 of 2 two contact blades 2.5, blade support member 2.6 is loaded, outside two contact blade 2.5, supported hole 2.52 and blade support member 2.6 is passed through after disc spring pad again with soket head cap screw, pass from the supported hole 2.52 of the two contact blade 2.5 of another side again, add Upper gasket and disc spring, finally use nut screwing clamping; 5., by the distance between the two contact blade 2.5 of adjustment, contact pressure value is adjusted.For reducing screw to the impact of Electric Field Distribution, the screw exposed seals by the most handy hemisphere nut.
The utility model eliminates traditional pull bar moment mode pattern of driving moving knife to move, and operating mechanism drives shaft insulation to rotate just can to realize point closing operation of moving knife, simplifies operating mechanism design.
The utility model achieves the double-fracture of switch; at main connecting plate and conductive plate, arc suppression coil is all installed; protect the quiet cutter on the quiet cutter of main connection and conductive plate; avoid the ablation of arcing to contact and quiet cutter; improve electrical security; particularly when safeguarding, better ensure the safety of operation maintenance personnel.
Owing to adopting technique scheme, the utility model compared with prior art has following beneficial effect:
1. the utility model structure is simple, and achieve the double-fracture of three-station, two arc eliminator, improves the electric safety of product.
2. the utility model Double-cutter head symmetric design, achieves Double-cutter head and is synchronously turned on or off under shaft insulation drives.Do not have the connection of traditional moving knife and moving knife seat to wear and tear, extend the useful life of product.
3. connecting lever assembly model of the present utility model, reduces the complexity of mould, decreases thermoplastic deformation, improves the qualification rate of product.
Accompanying drawing explanation
Fig. 1 is the utility model three-station separating brake schematic diagram.
Fig. 2 is the utility model three-station left view.
Fig. 3 is the utility model shaft insulation assembling schematic diagram.
Fig. 4 is the utility model connecting lever rearview.
Fig. 5 is the two contact blade left view of the utility model.
Label declaration in accompanying drawing: main connecting plate 1, main arc suppression coil 1.1, main striking tongue 1.2, shaft insulation 2, axle front end 2.1, connecting lever 2.2, outer double wedge 2.21, outer groove 2.22, flange face 2.23, pin hole 2.24, square opening 2.25, outer reinforcement 2.26, interior reinforcement 2.27, inner groovy 2.28, interior double wedge 2.29, pin 2.4, two contact blade 2.5, contact 2.51, supported hole 2.52, fixing hole 2.53, blade support member 2.6, the left isolation beam 3 of conductive plate, clamp nut 4, conductive plate 5, the left fixed contact 5.1 of conductive plate, fixed contact 5.2 under conductive plate, secondary arc suppression coil 5.3, secondary striking tongue 5.4, isolation beam 6 under conductive plate, main connecting plate isolation beam 7, geostationary cutter 8, grounding copper bar 8.1, ground connection clamp nut 8.2, front shoe 9, rear fixed plate 10, axle sleeve 11, bearing 12, interior hexagonal trip bolt 13.
Embodiment
The following description is only exemplary and be not to limit the disclosure, application or purposes in essence.Be further described below in conjunction with the embodiment of Figure of description to the utility model Double-cutter head three-station.
Embodiment 1: composition graphs 1-4, a kind of Double-cutter head three-station, comprise isolation beam 6 under main connecting plate 1, shaft insulation 2, the left isolation beam of conductive plate 3, conductive plate 5, conductive plate, main connecting plate isolation beam 7, geostationary cutter 8, it is characterized in that: conductive plate 5 has fixed contact 5.2 under the left fixed contact 5.1 of conductive plate and conductive plate, the left fixed contact 5.1 of electroplax is fixed on conductive plate and does on isolation beam, and under conductive plate, fixed contact 5.2 to be fixed under conductive plate on isolation beam 6; Main connecting plate 1 is fixed on main connecting plate isolation beam 7, is provided with symmetrical two contact blades 2.5 in the middle of shaft insulation 2; Under main connecting plate 1, shaft insulation 2, conductive plate, the center of fixed contact 5.2 on one wire, and the center of the left fixed contact 5.1 of conductive plate, shaft insulation 2, geostationary cutter 8 on one wire; Under main connecting plate 1, the left fixed contact of conductive plate 5.1, conductive plate the center line of fixed contact 5.2, geostationary cutter 8 and the center line of symmetrical two contact blades 2.5 in the same plane.In Fig. 1, Double-cutter head is in vacant state, not charged, achieves switch separating brake function.Main arc suppression coil 1.1 is fixed on main connecting plate 1, and main arc suppression coil 1.1 has main striking tongue 1.2; Be connected with time arc suppression coil 5.3 under conductive plate below fixed contact 5.2, secondary arc suppression coil 5.3 has secondary striking tongue 5.4.Switch separating brake ideally; under the quiet cutter of two contact blade 2.5 and main connecting plate 1 and conductive plate, fixed contact 5.2 synchronously disengages; flow through main striking tongue 1.2 identical with the striking electric current of time striking tongue 5.4; the time elimination arc light of half can be reduced than single arc suppression coil; thorough turn-off current, protection contact 2.51 and the ablation of quiet cutter striking electric current off guard.Quenching time is shorter, and the energy of arc current is less, and caloric value is just few, more not easily ablation contact and quiet cutter.Due to the error of assembling and the deviation of angle, under the quiet cutter of two contact blades 2.5 and main connecting plate 1 and conductive plate, fixed contact 5.2 there will be asynchrony phenomenon, then first depart from the first starting the arc of quiet cutter, arc suppression coil produces rotating magnetic field and electron ion to be blown off quiet cutter, and then the quiet cutter of rear disengaging also produces striking current, accelerate to reduce arc current, reach the effect of rapid arc extinguishing.Show after tested, adopt the design of double-fracture, two arc extinguishing, the quiet cutter of contact is substantially without ablation phenomen.After adopting the design of double-fracture, two Petersen coil, by detecting, quenching time religion is conventional but Petersen coil design will reduce more than 1/3rd.
Double-fracture three-stations load switch of the present utility model is applicable to from main connecting plate 1 direction powering mode with from conductive plate 5 direction powering mode, and its arc quenching effect is identical.
Arc suppression coil in the utility model also can replace with arc-chute.
Shaft insulation 2 is combined successively by axle front end 2.1, connecting lever 2.2, shaft rear end 2.3.Shaft insulation 2(Fig. 3) main body is inserted in the spline shape flange sleeve of connecting lever 2.2 one end by axle front end 2.1 spline shape flange shaft, is inserted in totally three connecting levers 2.2 continuously, then connect shaft rear end 2.3 and complete; Be provided with the two contact blade 2.5 of two pieces in each connecting lever 2.2 chamber and be fixed on connecting lever 2.2 with pin 2.4; Two contact blade 2.5 two ends blade support member 2.6 supports, and puts disc spring nut tightening with screw, and disc spring is located at outside two contact blade 2.5.3 connecting levers 2.2 in the middle part of shaft insulation 2, respectively to A, B, C three-phase of inductive switch.One end, axle front end 2.1 is circular shaft, and has the flat position of docking with operating mechanism.Axle front end 2.1 other end is spline shape flange shaft.Connecting lever 2.2 one end is provided with spline shape flange sleeve, and the other end is spline shape flange shaft.Shaft rear end 2.3 one end is provided with spline shape flange sleeve, and the other end is circular shaft.
Shaft insulation 2(Fig. 3) adopt plastics to add glass fibre to be formed by Mould Machining.Axle front end 2.1, connecting lever 2.2, shaft rear end 2.3 are processed by Shooting Technique by mould respectively.Shaft insulation 2 also can take unitary mould to process, but Design of Dies is more complicated, because length is longer simultaneously after processing, easily causes occurring local contraction metaboly, affects the quality of product.Glass fibre improves the intensity of plastics, decreases thermoplastic deformation.Plastics, glass fibre are all insulating material, solve the phase insulation problem of switch.
Composition graphs 3 and Fig. 4, the spline shape flange sleeve of connecting lever 2.2 is provided with inner groovy 2.28 and interior double wedge 2.29, and the spline shape flange shaft of connecting lever 2.2 is provided with outer double wedge 2.21, outer groove 2.22 and flange face 2.23.Inner groovy 2.28 coordinates with outer double wedge 2.21, and interior double wedge 2.29 coordinates with outer groove 2.22.Spline shape flange can adopt four teeth or six teeth or octadentate structure, can symmetrical or asymmetric distribution.Interior reinforcement 2.27 is provided with in spline shape flange sleeve and spline shape flange shaft.Be provided with square through hole 2.25 in the middle of connecting lever 2.2, two ends are provided with pin hole 2.24.Outside 4 faces are added with outer reinforcement 2.26 to square through hole 2.25 respectively.Pin hole 2.24 is for fixing two contact blade 2.5.
Respectively there are two contacts, 2.51, supported hole 2.52 and a fixing hole 2.53 in two contact blade 2.5 two ends.Composition graphs 5, center, two contact blade 2.5 two ends respectively has a seam, extends to fixing hole 2.53.Contact 2.51 can be the special contact of riveted joint power switch.Contact 2.51 center is to supported hole centre distance 30 millimeters, and contact 2.51 center is to fixing hole 2.53 centre distance 65 millimeters.
Claims (6)
1. a double-fracture three-stations load switch, comprise insulating part (6) under main connecting plate (1), shaft insulation (2), the left insulating part of conductive plate (3), conductive plate (5), conductive plate, main connecting plate insulating part (7), geostationary cutter (8), it is characterized in that: conductive plate (5) has fixed contact (5.2) under the left fixed contact of conductive plate (5.1) and conductive plate, the left fixed contact of conductive plate (5.1) is fixed on the left insulating part of conductive plate (3), and under conductive plate, fixed contact (5.2) to be fixed under conductive plate on insulating part (6); Main connecting plate (1) is fixed on main connecting plate insulating part (7), is provided with symmetrical two contact blades (2.5) in the middle of shaft insulation (2); Main arc suppression coil (1.1) is fixed on main connecting plate (1), main arc suppression coil (1.1) has main striking tongue (1.2); Under conductive plate, fixed contact (5.2) below is connected with time arc suppression coil (5.3), secondary arc suppression coil (5.3) has secondary striking tongue (5.4), under main connecting plate (1), the left fixed contact of conductive plate (5.1), conductive plate the center line of fixed contact (5.2), geostationary cutter (8) and the center line of symmetrical two contact blades (2.5) in the same plane.
2. double-fracture three-stations load switch as claimed in claim 1, it is characterized in that: shaft insulation 2 is combined successively by axle front end (2.1), connecting lever (2.2), shaft rear end (2.3), axle front end (2.1) one end is circular shaft, and have the connecting port docked with operating mechanism, axle front end (2.1) other end is spline shape flange shaft, shaft rear end (2.3) one end is provided with spline shape flange sleeve, and the other end is circular shaft.
3. double-fracture three-stations load switch as claimed in claim 1, is characterized in that: be all provided with the two contact blade (2.5) of two pieces in connecting lever (2.2) chamber and be fixed on connecting lever (2.2) with pin (2.4); Two contact blade (2.5) two ends blade support member (2.6) supports, and puts disc spring nut tightening with screw, and disc spring is located at two contact blade (2.5) outside.
4. double-fracture three-stations load switch as claimed in claim 1, it is characterized in that: respectively there are two contacts (2.51) at two contact blade (2.5) two ends, a supported hole (2.52) and a fixing hole (2.53), wide 2 ~ 3mm is respectively had, the groove of long 50 ~ 80mm in the middle of the contact of two contact blade (2.5) two ends.
5. double-fracture three-stations load switch as claimed in claim 4, it is characterized in that: contact (2.51) center is to supported hole centre distance 30 millimeters, and contact (2.51) center is to fixing hole (2.53) centre distance 65 millimeters.
6. double-fracture three-stations load switch as claimed in claim 1, is characterized in that: main connecting plate (1) is that level side arranges when positive apparent direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520873939.9U CN205177690U (en) | 2015-11-05 | 2015-11-05 | Three station load switch in double break mouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520873939.9U CN205177690U (en) | 2015-11-05 | 2015-11-05 | Three station load switch in double break mouth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205177690U true CN205177690U (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520873939.9U Expired - Fee Related CN205177690U (en) | 2015-11-05 | 2015-11-05 | Three station load switch in double break mouth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205177690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280428A (en) * | 2015-11-05 | 2016-01-27 | 北海银河开关设备有限公司 | Double-break three-station load switch |
-
2015
- 2015-11-05 CN CN201520873939.9U patent/CN205177690U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280428A (en) * | 2015-11-05 | 2016-01-27 | 北海银河开关设备有限公司 | Double-break three-station load switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20181105 |