CN114628177B - Isolating switch for preventing zero-breaking fault - Google Patents
Isolating switch for preventing zero-breaking fault Download PDFInfo
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- CN114628177B CN114628177B CN202210239638.5A CN202210239638A CN114628177B CN 114628177 B CN114628177 B CN 114628177B CN 202210239638 A CN202210239638 A CN 202210239638A CN 114628177 B CN114628177 B CN 114628177B
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- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000009434 installation Methods 0.000 claims abstract description 22
- 230000003068 static effect Effects 0.000 claims description 47
- 230000017525 heat dissipation Effects 0.000 claims description 19
- 238000005192 partition Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims 7
- 230000009471 action Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 230000008033 biological extinction Effects 0.000 description 4
- 108090000565 Capsid Proteins Proteins 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/52—Cooling of switch parts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/008—Pedestal mounted switch gear combinations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention relates to an isolating switch for preventing zero breaking faults, which comprises a switch shell, a switching-on and switching-off mechanism, an N-pole contact and an L-pole contact, wherein the switching-on and switching-off mechanism comprises a handle part, a connecting piece, a first moving contact plate, a second moving contact plate, a first fixed contact group and a second fixed contact group; an L-pole contact is arranged on the first movable contact plate, and an N-pole contact is arranged on the second movable contact plate; the first moving contact plate and the second moving contact plate are arranged on the connecting piece, and the installation height of the second moving contact plate is lower than that of the first moving contact plate. The handle part can drive the connecting piece, before the L-pole contact contacts the first fixed contact group, the N-pole contact contacts the second fixed contact group, and after the L-pole contact breaks away from the first fixed contact group, the N-pole contact breaks away from the second fixed contact group. According to the invention, the installation height of the N electrode contact is lower than that of the L electrode contact, and the N electrode contact is firstly closed and then opened through the difference of the heights, so that the zero-breaking fault problem of the isolating switch at the moment of opening or closing can be prevented.
Description
Technical Field
The invention relates to the field of isolating switches, in particular to an isolating switch capable of preventing zero-breaking faults.
Background
The isolating switch is a switching device which is mainly used for isolating a power supply, switching operation and switching on and off a small current circuit and has no arc extinguishing function. When the isolating switch is in the separated position, the contacts have an insulation distance and an obvious disconnection mark which meet the specified requirements; and when the switch is in the closed position, the switch device can bear the current under the normal loop condition and the current under the abnormal condition in the specified time.
The isolating switch wiring comprises a zero line N and a fire line L. At the moment when the isolating switch is switched on or off, if the N line is cut off and the live line is kept connected, the use safety of the line is seriously affected, and the fault is called zero-off or zero-missing fault.
Some electrical equipment N lines are not provided with current tripping elements, and in the switching-on and switching-off process of the electrical equipment, electric arcs are generated on contacts which are firstly switched on or off, and as the phase lines are provided with the current tripping elements, overload and short circuit can be quickly reacted, so that the safety of circuits and equipment is ensured; even in the electrical equipment with the current tripping element arranged on the N line, if the electrical equipment is in a virtual closing or virtual dividing condition, the N line is firstly closed and then divided, so that the N line can only be in a closing state or the N line is not completely disconnected, and at the moment, the electrical equipment is not completely opened and closed, but only the N line is ensured to be connected with a load, and the danger of overhauling and electric shock of an operator is avoided.
Disclosure of Invention
The present invention is directed to providing an isolating switch for preventing zero-breaking fault, so as to solve the problems set forth in the background art.
The invention provides the following technical scheme: the isolating switch for preventing zero breaking fault comprises a switch shell, a switching-on and switching-off mechanism arranged in the switch shell, a plurality of N pole contacts and a plurality of L pole contacts. The opening and closing mechanism comprises a handle part, a connecting piece, a first moving contact plate, a second moving contact plate, a first fixed contact group and a second fixed contact group, wherein the handle part is arranged at the upper end of the switch shell, the upper end of the handle part is exposed, and an operator can realize opening and closing operations of the isolating switch through swinging the handle part. The connecting piece sets up in the handle lower extreme, and first moving contact board, second moving contact board set up on the connecting piece. The first movable contact plate is provided with an L-pole contact, the second movable contact plate is provided with an N-pole contact, and the installation height of the second movable contact plate is lower than that of the first movable contact plate, so that the installation height of the N-pole contact is lower than that of the L-pole contact. The first fixed contact group and the second fixed contact group are fixedly arranged on the switch shell at equal heights and respectively correspond to the first moving contact plate and the second moving contact plate. The handle part can drive the connecting piece, and the first moving contact plate and the second moving contact plate act along with the connecting piece; when closing the switch, before the L-pole contact on the first movable contact plate contacts the first fixed contact group, the N-pole contact on the second movable contact plate contacts the second fixed contact group first; when the switch is opened, after the L-pole contact on the first movable contact plate is separated from the first fixed contact group, the N-pole contact on the second movable contact plate is separated from the second fixed contact group. Therefore, the first closing and then separating of the N pole contact are realized, the disconnection of the zero line is avoided, and the disconnection fault is effectively prevented.
Further, the connecting piece comprises a first connecting rod, a second connecting rod, a first frame, a second frame, a first main contact spring, a second main contact spring, a first return spring and a second return spring. The lower end of the handle is hinged with the upper ends of the first connecting rod and the second connecting rod respectively, and can drive the first connecting rod and the second connecting rod to swing. The upper end of the first frame is hinged with the lower end of the first connecting rod, a first main contact spring and a first moving contact plate are arranged at the upper middle section of the first frame, a first return spring is arranged at the lower middle section of the first frame, the first main contact spring, the first moving contact plate and the first return spring are sequentially arranged from top to bottom, and the first return spring is directly contacted with the middle part of the first frame and does not contact with the first moving contact plate and is used for jacking the first moving contact plate to enable the first moving contact plate to reset. The first moving contact plate can move up and down along with the first frame. The second connecting rod, the second frame, the second main contact spring, the second reset spring, the second moving contact plate and the second fixed contact group are correspondingly arranged, and the second main contact spring presses down the second moving contact plate to enable the installation height of the second moving contact plate to be lower than that of the first moving contact plate, so that the installation height of the N electrode contact is lower than that of the L electrode contact. When the handle part acts to close, the N-pole contact of the second movable contact plate positioned at the lower end is contacted with the second fixed contact group, and when the handle part acts to close, the L-pole contact on the first movable contact plate is separated from the first fixed contact group, and the N-pole contact on the second movable contact plate is separated from the second fixed contact group, so that the N-pole contact is separated from the second fixed contact group after the N-pole contact is separated from the first fixed contact group.
Further, the first frame comprises a second through groove, a first upper chamber, a lower chamber and a partition board, wherein the upper end of the first frame is a triangular column body which is longitudinally arranged, and the second through groove is longitudinally formed. The lower end of the first connecting rod is horizontally inserted into the second through groove, the lower end of the second through groove is sequentially provided with a first upper cavity and a lower cavity, and a partition plate is arranged between the first upper cavity and the lower cavity to isolate the first upper cavity and the lower cavity. The lower end of the first movable contact plate is clung to the partition plate, the middle of the first movable contact plate horizontally penetrates through the first upper chamber, and the upper end of the first movable contact plate is provided with a first main contact spring. The upper end of the first main contact spring is abutted against the top wall of the first upper chamber, the first connecting rod swings, the first frame is pressed down to enable the first main contact spring to be compressed and the first movable contact plate to be pressed down, and then the first movable contact plate is enabled to be in contact with the first fixed contact group, and closing is achieved. The protruding lug that sets up of baffle lower extreme, second reset spring set up in the cavity down, the upper end setting is on the lug and with the baffle contact, and the switch casing is hugged closely to the lower extreme, and when head rod upwards swings, and first moving contact board upwards moves along with first frame under reset spring and first main contact spring's effect, and first moving contact board breaks away from with first stationary contact group, realizes the separating brake. The second frame is the same with the first frame structure, and the action principle is the same with the first frame, including the second upper chamber, the installation height of the relative switch casing of second frame is less than first frame, the bottom surface of the second upper chamber is high to be less than first upper chamber to realize that the installation height of second moving contact board is less than first moving contact board, and then realize that the installation height of N utmost point contact is less than L utmost point contact.
Further, two ends of the first static contact group are respectively provided with a static pole, the static poles and the L pole contacts correspond to each other and can be contacted with and separated from each other, the structure of the second static contact group is the same as that of the first static contact group, two static poles of the second static contact group can be contacted with or separated from the N pole contacts, and the disconnecting or switching-on of the isolating switch is completed through the contact or separation of the static poles and the L pole contacts and the N pole contacts.
Further, the first movable contact plate is plate-shaped, the middle is narrow, the two ends are wide, the middle part is installed on the first upper cavity in a penetrating mode, and the two ends are respectively provided with a first through hole and are provided with an L-pole contact. The second movable contact plate has the same structure as the first movable contact plate, and N-pole contacts are respectively arranged at two ends of the second movable contact plate.
Further, the middle parts of the first fixed contact group and the second fixed contact group are fixedly arranged on the switch shell, one end of each fixed contact group extends upwards to form a wiring terminal, and the wiring terminal is provided with a wiring port at the switch shell. The operator makes wiring through the wiring port.
Further, the wiring terminal is a wiring screw, and the outer ends of the first fixed contact group and the second fixed contact group are fixedly connected with the wiring screw.
Further, prevent that isolator of zero break fault still includes arc extinguishing mechanism, arc extinguishing mechanism includes arc resistant piece and explosion chamber that a plurality of equidistance intervals set up, the arc resistant piece is the arc setting in quiet pole contact surface upper end, and from supreme size grow in proper order down, forms the longitudinal joint arc extinction. The switch shell is provided with a hollow chamber at the position far away from the static point and is used as an arc extinguishing chamber. When the static pole is contacted with or separated from the L pole contact and the N pole contact, an arc can be generated, the arc enters the arc extinguishing chamber after being elongated, is cooled and extinguished after being contacted with the arc-resisting sheet, and is suitable for arc extinction of the isolating switch.
Further, the arc extinguishing mechanism further comprises an air outlet hole, a first air outlet channel and a second air outlet channel, a second through hole is formed in one side, far away from the arc-resisting piece, of the arc extinguishing chamber and is communicated with the wiring terminal, and the wiring terminal is used as the first air outlet channel. The lower ends of the first fixed contact group and the second fixed contact group are hollowed out and extend to the side face of the switch shell to serve as a second air outlet channel. When the static pole is contacted with or separated from the L pole contact and the N pole contact to generate electric arcs, a large amount of heat is generated, and the heat is respectively diffused to the first air outlet channel and the second air outlet channel and finally flows out from the air outlet holes, so that the internal heat dissipation of the switch shell is facilitated.
Further, the switch shell further comprises a front shell, a middle shell and a rear shell, wherein the front shell and the rear shell respectively wrap the front side and the rear side of the opening and closing mechanism, a first heat dissipation groove is transversely formed in the front surface of the front shell in a penetrating mode, and a second heat dissipation groove is transversely formed in the rear surface of the rear shell in a penetrating mode. The well casing sets up between preceding casing and back casing, and the explosion chamber is installed on well casing, well casing divides into two contact chambers with divide-shut brake mechanism to install head rod, first frame, first main contact spring, first reset spring, first moving contact board, first static contact group, and second connecting rod, second frame, second main contact spring, second moving contact board, second reset spring, second static contact group respectively, the switch casing runs through around and sets up a plurality of third through holes, the third through hole is used for connecting a plurality of switch casings, forms the switch group. Through first heat dissipation recess and second heat dissipation recess for the switch casing that connects around forms the passageway of circulation of air, is favorable to reinforcing switch casing's heat dispersion.
Compared with the prior art, the invention has the following beneficial effects:
1. The installation height of the N pole contact is lower than that of the L pole contact, the N pole contact can be firstly combined and then separated through the height difference, when the handle part acts to be combined, the N pole contact on the second movable contact plate positioned at the lower end is firstly contacted with the second fixed contact group, and then the L pole contact on the first movable contact plate is contacted with the first fixed contact group; when the handle part acts to break the gate, the N-pole contact on the second movable contact plate positioned at the lower end breaks away from the second fixed contact group, and the L-pole contact on the first movable contact plate breaks away from the first fixed contact group, so that the N-pole contact is firstly combined and then separated, the zero line break is avoided, and the zero break fault is effectively prevented.
2. When the static pole contacts with the N pole contact and the L pole contact or breaks away from the N pole contact and the L pole contact, a large amount of electric arcs can be generated, the electric arcs enter the arc extinguishing chamber after being elongated through the arc extinguishing mechanism, the electric arcs are cooled and extinguished after being contacted with the arc-resisting sheet, and the arc extinguishing mechanism is suitable for effective arc extinction of the isolating switch.
3. The arc extinguishing mechanism is provided with the air outlet, when the static point is contacted with or separated from the N-pole contact and the L-pole contact to generate electric arcs, a large amount of heat is generated, and the heat is respectively diffused to the first air outlet channel and the second air outlet channel and finally flows out of the air outlet, so that the internal heat dissipation of the switch shell is facilitated.
4. Through holes are formed in the front and rear of the switch shell in a penetrating manner, and the through holes can be connected with a plurality of switch shells in sequence to form a switch group, so that a plurality of groups of isolating switches can be used together conveniently; the switch casing sets up procapsid, well casing and back casing, and the first heat dissipation recess is transversely seted up to the front surface of procapsid, transversely sets up the second heat dissipation recess at the back surface of back casing, through first heat dissipation recess and second heat dissipation recess for the switch casing that the front and back is connected forms the passageway of circulation of air, is favorable to reinforcing switch casing's heat dispersion.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic three-dimensional appearance of a zero-break fault-preventing disconnector of the present invention;
FIG. 2 is a schematic illustration of the features of the zero-break fault-preventing disconnector of the present invention;
FIG. 3 is a three-dimensional schematic diagram of a switch-off and switch-on mechanism of the invention for preventing zero-turn-off faults;
FIG. 4 is a front view of the opening and closing mechanism of the zero-break fault-preventing disconnector of the present invention;
FIG. 5 is a top view of the zero-break fault-preventing disconnector of the present invention;
In the figure: 1. a switch housing; 2. an N-pole contact; 3. an L-pole contact; 4. a handle portion; 401. a handle head; 402. a rotating body; 403. a connector; 501. a first connecting rod; 502. a second connecting rod; 601. a first frame; 602. a second frame; 6011. a first upper chamber; 6012. a lower chamber; 6013. a partition plate; 6021. a second upper chamber; 701. a first main contact spring; 702. a second main contact spring; 801. a first return spring; 802. a second return spring; 901. a first movable contact plate; 902. a second movable contact plate; 101. the first static contact group; 102. the second static contact group; 103. a front housing; 104. a middle shell; 105. a rear housing; 106. a first heat dissipation groove; 107. a third through hole; 11. a terminal; 12. a wiring port; 13. an arc-resistant sheet; 14. an arc extinguishing chamber; 15. an air outlet hole; 16. a first outlet channel; 17. and a second air outlet channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-5, the present invention provides the following technical solutions: the invention relates to an isolating switch for preventing zero-breaking faults, which comprises a switch shell 1, a switching-on and switching-off mechanism, an arc extinguishing mechanism, two groups of N pole contacts 2 and two groups of L pole contacts 3, wherein the switching-on and switching-off mechanism, the arc extinguishing mechanism and the two groups of N pole contacts 3 are arranged in the switch shell 1. The opening and closing mechanism comprises a handle part 4, a connecting piece, a first moving contact plate 901, a second moving contact plate 902, a first fixed contact group 101 and a second fixed contact group 102. The handle part 4 is arranged at the upper end of the switch shell 1, the upper end of the handle part 4 is exposed, and an operator realizes the opening and closing operation of the isolating switch by swinging the handle part 4. The connecting piece is arranged at the lower end of the handle part 4, and the first moving contact plate 901 and the second moving contact plate 902 are arranged on the connecting piece. The two ends of the first movable contact plate 901 are respectively provided with a group of L-pole contacts 3, the two ends of the second movable contact plate 902 are respectively provided with a group of N-pole contacts 2, and the installation height of the second movable contact plate 902 is lower than that of the first movable contact plate 901, so that the installation height of the N-pole contacts 2 is lower than that of the L-pole contacts 3. The first fixed contact group 101 and the second fixed contact group 102 are fixedly arranged on the switch shell 1 at equal heights and respectively correspond to the first moving contact plate 901 and the second moving contact plate 902. The handle part 4 can drive the connecting piece, and the first moving contact plate 901 and the second moving contact plate 902 act along with the connecting piece. The connection members include a first connection rod 501, a second connection rod 502, a first frame 601, a second frame 602, a first main contact spring 701, a second main contact spring 702, a first return spring 801, and a second return spring 802. The lower end of the handle part 4 is hinged with the upper ends of the first connecting rod 501 and the second connecting rod 502 respectively, and can drive the first connecting rod 501 and the second connecting rod 502 to swing at the same time, and the lower end of the first connecting rod 501 is hinged with the upper end of the first frame 601. The upper section in the first frame 601 is provided with a first main contact spring 701 and a first movable contact plate 901, the middle lower section is provided with a first return spring 801, the first main contact spring 701, the first movable contact plate 901 and the first return spring 801 are sequentially arranged from top to bottom, wherein the first return spring 801 is directly contacted with the middle part of the first frame 601 and does not contact with the first movable contact plate 901, and is used for jacking the first movable contact plate 901 to enable the first movable contact plate 901 to return. The first movable contact plate 901 can move up and down with the first frame 601. The second connecting rod 502, the second frame 602, the second main contact spring 702, the second return spring 802, the second moving contact plate 902, and the second fixed contact group 102 are correspondingly arranged. The second main contact spring 702 presses down the second moving contact plate 902 to make the installation height of the second moving contact plate 902 lower than the first moving contact plate 901, so that the installation height of the N-pole contact 2 is lower than the L-pole contact 3. When the handle part 4 acts to close, the N-pole contact 2 on the second movable contact plate 902 positioned at the lower end is contacted with the second fixed contact group 102, and when the handle part 4 acts to break the brake, the L-pole contact 3 on the first movable contact plate 901 is separated from the first fixed contact group 101, and the N-pole contact 2 on the second movable contact plate 902 is separated from the second fixed contact group 102, so that the first-closing and later-separating of the N-pole contact 2 are realized, and zero-breaking faults are effectively prevented.
The first frame 601 includes a second through groove, a first upper chamber 6011, a lower chamber 6012 and a partition 6013, wherein the upper end of the first frame 601 is a triangular column longitudinally arranged, the second through groove is longitudinally formed, and the lower end of the first connecting rod 501 is horizontally inserted into the second through groove. The lower end of the second through groove is sequentially provided with a first upper chamber 6011 and a lower chamber 6012, a partition plate 6013 is arranged between the first upper chamber 6011 and the lower chamber 6012 to isolate the first upper chamber 6011 and the lower chamber 6012, an opening is arranged at the lower end of the lower chamber 6012, and the first upper chamber 6011 and the lower chamber 6012 integrally form a cuboid. The baffle 6013 is hugged closely to first moving contact board 901 lower extreme, and the middle level transversely runs through first upper chamber 6011, and the upper end sets up first main contact spring 701, first main contact spring 701 upper end butt first upper chamber 6011 roof, and through head rod 501 swing, the first frame 601 of pushing down makes first main contact spring 701 compressed and pushes down first moving contact board 901, and then makes first moving contact board 901 and the contact of first stationary contact group 101, realizes the combined floodgate. The protruding cylindrical lug that sets up of baffle 6013 lower extreme, second reset spring 802 set up in lower cavity 6012, and the upper end cover is established on the lug and is contacted with baffle 6013, and switch casing 1 is hugged closely to the lower extreme, and when head rod 501 upwards swings, and first moving contact board 901 upwards moves along with first frame 601 under reset spring and the effect of first main contact spring 701, and first moving contact board 901 breaks away from with first stationary contact group 101, realizes the separating brake. The second frame 602 has the same structure as the first frame 601, and the action principle is the same as the first frame 601, and the second frame 602 comprises a second upper chamber 6021, wherein the installation height of the second frame 602 relative to the switch shell 1 is lower than that of the first frame 601, and the bottom surface of the second upper chamber 9021 is lower than that of the first upper chamber 6011, so that the installation height of the second movable contact plate 902 is lower than that of the first movable contact plate 901, and the installation height of the N electrode contact 2 is lower than that of the L electrode contact 3.
The two ends of the first static contact group 101 are respectively provided with a static pole, the static poles correspond to the L pole contacts 3 and can be mutually contacted and separated, the structure of the second static contact group 102 is the same as that of the first static contact group 101, the two static poles of the second static contact group 102 can be contacted or separated from the N pole contacts, and the disconnecting or switching-on of the isolating switch is completed through the contact or separation of the static poles and the L pole contacts 3 and the N pole contacts 2.
The first movable contact plate 901 is plate-shaped, has a narrow middle part and wide two ends, and is installed on the first upper chamber 6011 in a penetrating manner, and the two ends are respectively provided with a first through hole and are provided with an L-pole contact 3. The second moving contact plate 902 has the same structure as the first moving contact plate 901, and N-pole contacts 2 are respectively mounted at both ends.
The handle part 4 comprises a group of handle heads 401, two groups of rotating bodies 402, two groups of connectors 403 and a switching-on/off indication area, the handle heads 401 are in a flat plate shape, the upper ends of the handle heads are exposed out of the switch shell 1, and the switch shell 1 is provided with a limit baffle at the position of the handle heads 401, so that the handle heads 401 can swing within the range of 120 degrees along with the rotating bodies 402, and the lower ends of the handle heads 401 are fixedly connected with the two groups of rotating bodies 402. The rotating body 402 is ring-shaped, the center is hollow and movably connected with the switch shell 1, the rotating body can rotate relative to the switch shell 1, the lower ends of the two groups of rotating bodies 402 are fixedly connected with one group of connectors 403 respectively, and the handle head 401, the two groups of rotating bodies 402 and the two groups of connectors 403 are fixed into a whole. The connector 403 is provided with a first through groove parallel to the center line of the rotator 402, one end of the first through groove is hinged with a first connecting rod 501, the other end of the first through groove is hinged with a second connecting rod 502, the first through groove is a circular through groove, and the connector 403, the rotator 402 and the handle head 401 form 150 degrees. The handle head 401 and the joint 403 swing left and right around the rotating body 402, and as a cantilever, the joint 403 swings left, moves downward with respect to the first frame 601, moves rightward, and the joint 403 moves upward with respect to the first frame 601. Then, the connector 403 drives the first connecting rod 501 and the second connecting rod 502 to move up and down, the first connecting rod 501 and the second connecting rod 502 drive the first frame 601 and the second frame 602, and the first frame 601 and the second frame 602 drive the first moving contact plate 901 and the second moving contact plate 902 to contact or separate from the first fixed contact group 101 and the second fixed contact group 102 respectively, so that the first-closing and later-separating operation of the isolating switch is realized. The opening and closing indication areas are arranged ON the front side and the rear side of the handle head 401, respectively expose the I/ON icons when in closing, are used for displaying closing, and expose the O/OFF icons when in opening, are used for displaying opening, so that the handle is convenient to use.
The first connecting rod 501 and the second connecting rod 502 are both U-shaped rods, the cross section is circular, the upper ends of the first connecting rods are respectively horizontally inserted into the first through grooves of the two groups of connectors 403 to form hinge joints, the middle of the first connecting rods vertically swings, and the lower ends of the first connecting rods are respectively horizontally inserted into the upper ends of the first frame 601 and the second frame 602 to form hinge joints. The first connecting rod 501 and the second connecting rod 502 are simple in structure, easy to process and use, convenient to connect the two groups of connectors 403 with the first frame 601 and the second frame 602, and stable and reliable in structure.
The middle parts of the first fixed contact group 101 and the second fixed contact group 102 are fixedly arranged on the switch shell 1, the outer ends of the first fixed contact group and the second fixed contact group extend upwards to form wiring terminals 11, wiring terminals 11 are provided with wiring ports 12 at the switch shell 1, and operators can conduct wiring through the wiring ports 12. The wiring terminal 11 is the mounting hole of wiring screw, and first static contact group 101 and second static contact group 102 outer end and wiring screw 11 fixed connection, the lower extreme of wiring screw 11 passes this mounting hole and the electric threaded connection of adaptation wire frame.
The arc extinguishing mechanism comprises two groups of arc-resisting sheets 13, an arc extinguishing chamber 14, an air outlet hole 15, a first air outlet channel 16 and a second air outlet channel 17 which are arranged at equal intervals. The upper ends of the first fixed contact group 101 and the second fixed contact group 102 are respectively provided with a group of arc extinguishing mechanisms. The arc-resisting pieces 13 are arc-shaped, all the arc-resisting pieces 13 are concentrically arranged, the central angle is 90 degrees, a fan-shaped arc extinguishing area is formed together, the arc-resisting pieces 13 are arranged at the upper end of the static pole contact surface, the lower end of each arc-resisting piece 13 does not exceed the middle part of the first static contact group 101, and the arc-resisting pieces 13 completely cover the L pole contact, the N pole contact and the action area thereof. Each group of arc-resistant sheets 13 is provided with six sheets, the sizes of the arc-resistant sheets become larger in sequence from bottom to top, and a longitudinal seam is formed for arc extinction, wherein the widths of two groups of arc-resistant sheets 13 arranged at the lower end are smaller than those of four groups of arc-resistant sheets 13 arranged at the upper end, and the four groups of arc-resistant sheets 13 arranged at the upper end leave a space for the movement of the first moving contact plate 901 and the second moving contact plate 902. The contact surface of the switch shell 1 far away from the static pole is provided with a hollow chamber which is used as an arc extinguishing chamber 14. When the static pole is contacted with or separated from the L pole contact 3 and the N pole contact 2, an electric arc is generated, the electric arc enters the arc extinguishing chamber 14 after being elongated, is cooled and extinguished after being contacted with the arc resisting sheet 13, so that longitudinal seam arc extinguishing is formed, and is suitable for effective arc extinguishing of the isolating switch. The side of the arc extinguishing chamber 14 away from the arc-proof sheet 13 is provided with a second through hole which is communicated with the wiring terminal 11, and the wiring terminal 11 is used as a first air outlet channel 16. The lower ends of the first fixed contact group 101 and the second fixed contact group 102 are hollowed out and extend to the side face of the switch shell 1 to serve as a second air outlet channel 17. When the static point contacts with the L-pole contact 3 and the N-pole contact 2 or breaks away from the L-pole contact to generate electric arcs, a large amount of heat is generated, and the heat is diffused to the first air outlet channel 16 and the second air outlet channel 17 respectively and finally flows out of the air outlet holes 15, so that the internal heat dissipation of the switch shell 1 is facilitated.
The switch housing 1 comprises a front housing 103, a middle housing 104 and a rear housing 105, wherein the front housing 103 and the rear housing 105 respectively wrap the front side and the rear side of the opening and closing mechanism, a first heat dissipation groove 106 is transversely penetrated and arranged on the front surface of the front housing 103, and a second heat dissipation groove is transversely penetrated and arranged on the rear surface of the rear housing 105. The first heat sink recess 106 and the second heat sink recess are each 0.3mm deep. The middle case 104 is disposed between the front case 103 and the rear case 105, and the arc extinguishing chamber 14 is mounted on the middle case 104. The middle housing 104 divides the opening and closing mechanism into two contact chambers, and is respectively provided with a first connecting rod 501, a first frame 601, a first main contact spring 701, a first return spring 801, a first moving contact plate 901, a first fixed contact group 101, a second connecting rod 502, a second frame 602, a second main contact spring 702, a second moving contact plate 902, a second return spring 802 and a second fixed contact group 102, wherein four groups of third through holes 107 are formed in the front and rear of the switch housing 1 in a penetrating manner, and a plurality of switch housings 1 can be sequentially connected front and rear through the third through holes 107 by screws to form a switch group. Through the first heat dissipation groove 106 and the second heat dissipation groove, the front-back connected switch housing 1 forms an air circulation channel, which is beneficial to enhancing the heat dissipation performance of the switch housing 1.
Working principle:
1. Closing: the operator swings the handle part 4 leftwards to expose the I/ON icon, so that the handle head 401 and the connector 403 swing around the rotator 402, downward displacement is generated in the swinging process of the connector 403, and accordingly the first connecting rod 501 and the second connecting rod 502 are pulled downwards, the first connecting rod 501 and the second connecting rod 502 drive the first frame 601 and the second frame 602, and the first frame 601 and the second frame 602 drive the first movable contact plate 901 and the second movable contact plate 902 to be respectively contacted with the first fixed contact group 101 and the second fixed contact group 102; the N-pole contact 2 on the second moving contact plate 902 at the lower end is firstly contacted with the static pole on the second static contact set 102, and then the L-pole contact on the first moving contact plate 901 is contacted with the static pole on the first static contact set 101, so that the first switching-on action of the N-pole contact 2 is realized.
2. And (3) opening: the operator swings the handle part 4 rightwards to expose the O/OFF icon, so that the handle head 401 and the connector 403 swing around the rotator 402, and upward displacement is generated in the swinging process of the connector 403, so that the first connecting rod 501 and the second connecting rod 502 are pulled upwards, the first connecting rod 501 and the second connecting rod 502 drive the first frame 601 and the second frame 602, and the first frame 601 and the second frame 602 drive the first movable contact plate 901 and the second movable contact plate 902 to be separated from the first fixed contact group 101 and the second fixed contact group 102 respectively; the N-pole contact 2 on the second moving contact plate 902 at the lower end is separated from the static pole on the second static contact set 102, and the L-pole contact 3 on the first moving contact plate 901 is separated from the static pole on the first static contact set 101, so that the back opening action of the N-pole contact 2 is realized.
It is noted that in this document, relational terms such as front, back, upper, lower, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. Prevent isolator of zero breaking trouble, including switch casing (1) and the divide-shut brake mechanism of setting in switch casing (1), its characterized in that: the switching-on/switching-off mechanism comprises a handle part (4), a connecting piece, a first moving contact plate (901), a second moving contact plate (902), a first fixed contact group (101) and a second fixed contact group (102); the handle part (4) is arranged at the upper end of the switch shell (1); the connecting piece is arranged at the lower end of the handle part (4), and the first movable contact plate (901) and the second movable contact plate (902) are arranged on the connecting piece; An L-pole contact (3) is arranged on the first movable contact plate (901), an N-pole contact (2) is arranged on the second movable contact plate (902), and the installation height of the second movable contact plate (902) is lower than that of the first movable contact plate (901), so that the installation height of the N-pole contact (2) is lower than that of the L-pole contact (3); the first fixed contact group (101) and the second fixed contact group (102) are fixedly arranged on the switch shell (1) at equal heights and respectively correspond to the first moving contact plate (901) and the second moving contact plate (902); the handle part (4) can drive the connecting piece, and the first movable contact plate (901) and the second movable contact plate (902) move along with the connecting piece; When the switch is closed, before the L pole contact (3) contacts the first fixed contact group (101), the N pole contact (2) contacts the second fixed contact group (102); when the switch is opened, after the L-pole contact (3) is separated from the first fixed contact group (101), the N-pole contact (2) is separated from the second fixed contact group (102); the connecting piece comprises a first connecting rod (501), a second connecting rod (502), a first frame (601), a second frame (602), a first main contact spring (701), a second main contact spring (702), a first return spring (801) and a second return spring (802); the lower end of the handle part (4) is respectively and movably connected with the upper ends of the first connecting rod (501) and the second connecting rod (502), and can drive the first connecting rod (501) and the second connecting rod (502) to swing; The lower end of the first connecting rod (501) is movably connected with the upper end of the first frame (601), a first main contact spring (701) and a first movable contact plate (901) are arranged at the middle upper section of the first frame (601), a first return spring (801) is arranged at the middle lower section of the first frame, and the first return spring (801) is directly contacted with the middle part of the first frame (601); the first movable contact plate (901) can move up and down along with the first frame (601); the second connecting rod (502), the second frame (602), the second main contact spring (702), the second reset spring (802), the second moving contact plate (902) and the second fixed contact group (102) are correspondingly arranged, and the second main contact spring (702) presses down the second moving contact plate (902) to enable the installation height of the second moving contact plate (902) to be lower than that of the first moving contact plate (901), so that the installation height of the N-pole contact (2) is lower than that of the L-pole contact (3).
2. The zero-break fault-preventing isolation switch of claim 1, wherein: the first frame (601) comprises a second through groove, a first upper chamber (6011), a lower chamber (6012) and a partition plate (6013), wherein the first frame (601) is longitudinally provided with the second through groove, the lower end of the first connecting rod (501) is horizontally inserted into the second through groove, the lower end of the second through groove is sequentially provided with the first upper chamber (6011) and the lower chamber (6012), and the partition plate (6013) is arranged between the first upper chamber (6011) and the lower chamber (6012) to isolate the first upper chamber and the lower chamber; the lower end of the first movable contact plate (901) is tightly attached to a partition plate (6013), the middle of the first movable contact plate horizontally penetrates through the first upper chamber (6011), the upper end of the first movable contact plate is provided with a first main contact spring (701), and the upper end of the first main contact spring (701) is abutted to the top wall of the first upper chamber (6011); the lower end of the partition plate (6013) is provided with a bump in a protruding mode, the second reset spring (802) is arranged in the lower cavity (6012), the upper end of the second reset spring is arranged on the bump and is in contact with the partition plate (6013), and the lower end of the second reset spring is clung to the switch shell (1); the second frame (602) is identical to the first frame (601) in structure and comprises a second upper chamber (6021), the installation height of the second frame (602) relative to the switch shell (1) is lower than that of the first frame (601), and the bottom surface of the second upper chamber (6021) is lower than that of the first upper chamber (6011).
3. The zero-break fault-preventing isolation switch of claim 2, wherein: two ends of the first static contact group (101) are respectively provided with a static pole, and the static pole can be contacted with or separated from the L pole contact (3); the second static contact group (102) has the same structure as the first static contact group (101).
4. A zero-break fault preventing disconnector according to claim 3, in which: the middle of the first movable contact plate (901) is narrow, the two ends of the first movable contact plate are wide, the middle part of the first movable contact plate is arranged on the first upper chamber (6011) in a penetrating mode, and the two ends of the first movable contact plate are respectively provided with a first through hole and are provided with an L-pole contact (3); the second movable contact plate (902) has the same structure as the first movable contact plate (901), and N-pole contacts (2) are respectively arranged at two ends of the second movable contact plate.
5. The zero-break fault preventing isolation switch of claim 4, wherein: the middle parts of the first fixed contact group (101) and the second fixed contact group (102) are fixedly arranged on the switch shell (1), and one end of the first fixed contact group extends upwards to form a wiring terminal (11); the terminal (11) is provided with a terminal opening (12) at the switch housing (1).
6. The zero-break fault preventing isolation switch of claim 5, wherein: the wiring terminal (11) is a wiring screw, and the outer ends of the first fixed contact group (101) and the second fixed contact group (102) are fixedly connected with the wiring screw.
7. The zero-break fault preventing isolation switch of claim 5, wherein: the isolating switch for preventing zero breaking fault further comprises an arc extinguishing mechanism, wherein the arc extinguishing mechanism comprises a plurality of arc-resisting pieces (13) and arc extinguishing chambers (14) which are arranged at equal intervals, the arc-resisting pieces (13) are arranged at the upper end of a static pole contact surface in an arc shape, and the size of the arc-resisting pieces is sequentially increased from bottom to top to form longitudinal seam arc extinguishing; the switch shell (1) is provided with a hollow chamber far away from the static point and is used as an arc extinguishing chamber (14).
8. The zero-break fault preventing isolation switch of claim 7, wherein: the arc extinguishing mechanism further comprises an air outlet hole (15), a first air outlet channel (16) and a second air outlet channel (17), a second through hole (17) is formed in one side, far away from the arc-resisting sheet (13), of the arc extinguishing chamber (14) and is communicated with the arc extinguishing chamber, and the wiring terminal (11) is used as the first air outlet channel (16); the lower ends of the first fixed contact group (101) and the second fixed contact group (102) are hollowed out and extend to the side face of the switch shell (1) to serve as a second air outlet channel (17).
9. The zero-break fault preventing isolation switch of claim 7, wherein: the switch shell (1) further comprises a front shell (103), a middle shell (104) and a rear shell (105), wherein the front shell (103) and the rear shell (105) respectively wrap the front side and the rear side of the opening and closing mechanism, a first heat dissipation groove (106) is transversely formed in the front surface of the front shell (103) in a penetrating manner, and a second heat dissipation groove is formed in the rear surface of the rear shell (105) in a penetrating manner; the middle shell (104) is arranged between the front shell (103) and the rear shell (105), the arc extinguishing chamber (14) is arranged on the middle shell (104), the middle shell (104) divides the opening and closing mechanism into two contact chambers, and a first connecting rod (501), a first frame (601), a first main contact spring (701), a first return spring (801), a first movable contact plate (901), a first fixed contact group (101) and a second connecting rod (502), a second frame (602), a second main contact spring (702), a second movable contact plate (902), a second return spring (802) and a second fixed contact group (102) are respectively arranged; the switch shell (1) is provided with a plurality of third through holes (107) in a penetrating mode, and the third through holes (107) are used for connecting the switch shells (1) to form a switch group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210239638.5A CN114628177B (en) | 2022-03-11 | 2022-03-11 | Isolating switch for preventing zero-breaking fault |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210239638.5A CN114628177B (en) | 2022-03-11 | 2022-03-11 | Isolating switch for preventing zero-breaking fault |
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| CN114628177A CN114628177A (en) | 2022-06-14 |
| CN114628177B true CN114628177B (en) | 2024-06-28 |
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| CN202210239638.5A Active CN114628177B (en) | 2022-03-11 | 2022-03-11 | Isolating switch for preventing zero-breaking fault |
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| CN206322649U (en) * | 2016-10-27 | 2017-07-11 | 浙江正泰电器股份有限公司 | Disconnecting switch |
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| US5290980A (en) * | 1992-07-08 | 1994-03-01 | Indak Manufacturing Corp. | Rotary vacuum-electric switch |
| KR100536106B1 (en) * | 2005-06-22 | 2005-12-14 | 델타이지씨에스(주) | Power switching device for preventing error operation by high frequency current contact and device cut off leakage of electricity therefor |
| CN201256086Y (en) * | 2008-09-03 | 2009-06-10 | 上海东洋电装有限公司 | Switch device for automobile brake lamp |
| CN202616144U (en) * | 2012-01-31 | 2012-12-19 | 上海诺雅克电气有限公司 | Capacitor contactor having bistable current-limiting contact |
| CN102709126B (en) * | 2012-06-11 | 2016-04-27 | 无锡新宏泰电器科技股份有限公司 | Level Four modular case circuit breaker first closes the aligning gear divided afterwards by N phase |
| DE102012015037B4 (en) * | 2012-07-31 | 2022-08-11 | Phoenix Contact Gmbh & Co. Kg | electronics module |
| CN204348583U (en) * | 2014-12-01 | 2015-05-20 | 浙江正泰电器股份有限公司 | Isolating switch |
| CN107910228B (en) * | 2015-12-22 | 2019-09-10 | 厦门宏发电力电器有限公司 | A kind of high voltage direct current relay |
| CN106449212B (en) * | 2016-11-24 | 2019-02-22 | 贵州泰永长征技术股份有限公司 | A kind of double power supply automatic transfer switch structure with overlapping neutral function |
| CN209374379U (en) * | 2018-10-31 | 2019-09-10 | 厦门安达兴电气集团有限公司 | Nonpolarity low-voltage circuit breaker |
| CN111161970A (en) * | 2018-11-08 | 2020-05-15 | 扬州新菱电器有限公司 | Dual-power automatic transfer switch with neutral line overlapping function |
| CN209312680U (en) * | 2019-03-08 | 2019-08-27 | 浙江格蕾特电器股份有限公司 | Double-contact relay with different contact heights |
| CN112086303A (en) * | 2019-06-12 | 2020-12-15 | 北京明日电器设备有限责任公司 | Small-size isolator |
| CN211208313U (en) * | 2020-03-18 | 2020-08-07 | 巨邦集团有限公司 | Isolating switch |
| CN212411954U (en) * | 2020-06-27 | 2021-01-26 | 天水二一三电器集团有限公司 | Dynamic breaking contact system of contactor |
| CN214477137U (en) * | 2020-11-19 | 2021-10-22 | 浙江正泰电器股份有限公司 | Isolating switch |
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| CN206322649U (en) * | 2016-10-27 | 2017-07-11 | 浙江正泰电器股份有限公司 | Disconnecting switch |
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Inventor after: Zou Bin Inventor after: Li Xuebin Inventor after: Wang Renwen Inventor after: Gao Xiaoyan Inventor after: Ye Xiufeng Inventor after: Chen Changjiu Inventor after: Cao Weifeng Inventor after: Yan Junqi Inventor before: Gao Xiaoyan Inventor before: Ye Xiufeng Inventor before: Chen Changjiu Inventor before: Cao Weifeng Inventor before: Yan Junqi |
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Effective date of registration: 20240429 Address after: 430000 No.2 Fengmao Road, Qiaokou Economic Development Zone, Wuhan City, Hubei Province Applicant after: HUBEI ELECTRIC POWER EQUIPMENT Co.,Ltd. Country or region after: China Address before: 3f-a228, Zone C, innovation building, software park, torch hi tech Zone, Xiamen City, Fujian Province, 361000 Applicant before: XIAMEN SHANXIU SUNSHINE TECHNOLOGY Co.,Ltd. Country or region before: China |
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