CN108550490B - Isolated circuit breaker, isolating switch and electric isolation underframe thereof - Google Patents
Isolated circuit breaker, isolating switch and electric isolation underframe thereof Download PDFInfo
- Publication number
- CN108550490B CN108550490B CN201810403635.4A CN201810403635A CN108550490B CN 108550490 B CN108550490 B CN 108550490B CN 201810403635 A CN201810403635 A CN 201810403635A CN 108550490 B CN108550490 B CN 108550490B
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- travel switch
- isolation
- rotating shaft
- closing
- trigger
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/10—Interlocking mechanisms for interlocking two or more switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
- H01H71/0221—Majority of parts mounted on central frame or wall
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Abstract
The invention relates to an isolation type circuit breaker, an isolation switch and an electric isolation underframe thereof, wherein the isolation type circuit breaker comprises a circuit breaker body and the isolation switch, the isolation switch comprises a bracket arranged on the circuit breaker body, an isolation rotating shaft is rotatably arranged on the bracket, a motor which rotates forward to drive the isolation rotating shaft to switch on and rotate and rotates reversely to drive the isolation rotating shaft to switch off is arranged on the bracket, the isolation type circuit breaker also comprises a travel switch structure which is triggered at the tail end of the switching-on rotation of the isolation rotating shaft to control the forward rotation stop of the motor and triggered at the tail end of the switching-off rotation of the isolation rotating shaft to control the reverse rotation stop of the motor, the isolation type circuit breaker also comprises a trigger part for triggering the travel switch structure, one of the trigger part and the travel switch structure is arranged on. The motor is adopted to drive the isolation rotating shaft to rotate, so that the labor intensity of operators is reduced. The reliability of motor drive can be improved through the cooperation of travel switch structure and trigger part.
Description
Technical Field
The invention relates to an isolation type circuit breaker, an isolation switch and an electric isolation underframe thereof.
Background
The isolating switch plays an electrical isolation role in the power system and is an indispensable component of the power system. In common high-voltage electrical apparatus in the existing market, circuit breaker and isolator are the form that the components of a whole that can function independently were arranged, and under the ordinary condition, isolator components of a whole that can function independently were arranged in the one end of being qualified for the next round of competitions of circuit breaker, lead to whole high-voltage electrical apparatus occupation space big, and the installation is inconvenient. The utility model discloses a grant utility model patent that bulletin number is CN205670515U discloses a take travel switch's isolator, isolator include the isolation frame, are provided with the button head at the lower extreme of isolation frame, install the stationary contact seat in the upper end, and it has movable contact sword to articulate on the button head. The isolating frame is rotatably provided with a rotating shaft, the rotating shaft is provided with a crank arm, the crank arm is provided with an isolating pull rod, and the other end of the isolating pull rod is connected with the movable contact knife. When the isolating switch is used specifically, the forward rotation of the rotating shaft can drive the movable contact knife to be combined with the static contact base so as to realize the closing of the isolating switch; the reverse rotation can drive the disconnection between the movable contact knife and the static contact base so as to realize the opening of the isolating switch. Of course, the forward and reverse rotation of the shaft is only a relative concept. An operating rod is arranged at one end of the rotating shaft, and an operator can manually pull the operating rod to drive the rotating shaft to rotate forwards and backwards.
During the use, install isolator's isolation frame on the fixing base of circuit breaker, realize isolator and circuit breaker's high integration, can reduce the space that whole high-voltage apparatus occupy, realized integrating and miniaturized design. However, the on-off operation of the disconnecting switch in the prior art is all manual operation, when the circuit breaker or the whole circuit needs to be overhauled, after the circuit breaker is opened, an overhaul worker needs to manually pull the operating rod to drive the rotating shaft to rotate, the manual operation is complex, and the labor intensity is high.
Disclosure of Invention
The invention aims to provide an isolating circuit breaker, which aims to solve the problem of high labor intensity caused by manually operating an isolating switch to switch on and off in the prior art; still provide isolator and isolator with electronic isolation chassis.
In order to achieve the purpose, the technical scheme of the isolation type circuit breaker is as follows: the utility model provides an isolated circuit breaker, includes circuit breaker body and isolator, isolator is including locating the support on the circuit breaker body, rotate on the support and install the isolation pivot, be equipped with corotation on the support and drive isolation pivot combined floodgate rotation, reversal drive isolation pivot separating brake pivoted motor, isolated circuit breaker still includes and is triggered with the control motor corotation at isolation pivot combined floodgate pivoted end and stops, is triggered with the travel switch structure that the control motor reversal stopped at isolation pivot separating brake pivoted end, isolated circuit breaker still includes the trigger part that is used for triggering the travel switch structure, one among trigger part and the travel switch structure is located on the support, another is located in the isolation pivot.
The invention has the beneficial effects that: the isolation type circuit breaker provided by the invention comprises a circuit breaker body and an isolation switch which are integrated into a whole, wherein the isolation switch comprises a bracket arranged on the circuit breaker body, and an isolation rotating shaft is rotatably arranged on the bracket. In order to ensure the reliability of the motor driving the isolation rotating shaft to switch on and off, one of the bracket and the isolation rotating shaft is provided with a travel switch structure, and the other one is provided with a trigger part. When the isolating rotating shaft is used, the motor rotates forwards to drive the isolating rotating shaft to switch on and rotate to the tail end, the trigger part triggers the travel switch structure, and the motor is controlled to rotate forwards and stop; when the motor rotates reversely to drive the isolation rotating shaft to open the brake and rotate to the tail end, the trigger part triggers the travel switch structure to control the motor to stop reversing. According to the invention, the motor can be prevented from continuously driving the isolation rotating shaft to rotate to cause the over-position of the opening and closing brake through the matching of the travel switch structure and the trigger part, and meanwhile, the condition that the motor stops rotating when the opening and closing brake is not in place is also avoided, so that the reliability of motor driving is improved.
And as a further optimization of a travel switch structure, the travel switch structure comprises a closing travel switch for controlling the motor to rotate forwards and stop after being triggered and a separating travel switch for controlling the motor to rotate backwards and stop after being triggered.
The travel switch structure comprises a closing travel switch and an opening travel switch, and the closing travel switch and the opening travel switch are distributed on the support along the circumference of the isolation rotating shaft specifically to the setting positions of the closing travel switch and the opening travel switch.
The isolating circuit breaker comprises a forward rotation control loop and a reverse rotation control loop, the forward rotation control loop is used for controlling the motor to rotate forward to start and stop, the reverse rotation control loop is used for controlling the motor to rotate reversely to start and stop, control switches are additionally arranged on the forward rotation loop and the reverse rotation loop, the closing travel switch is connected with the forward rotation control loop in a control mode, the opening travel switch is connected with the reverse rotation control loop in a control mode, the closing travel switch and the opening travel switch are normally-open travel switches which are used for disconnecting the corresponding control loops when triggered and connecting the corresponding control loops when not triggered, and the triggering portion is a single triggering portion which can trigger only one of the closing travel switch and the opening travel switch. The trigger part is designed to be a single trigger part, and the single trigger part can conduct one of the forward rotation control loop and the reverse rotation control loop and disconnect the other one, so that when the isolating switch is switched on in place, the reverse rotation control loop is conducted, and the switching-off operation can be carried out; when the isolating switch is switched on in place, the forward rotation control loop is conducted, and switching-on operation can be carried out.
The isolation-based circuit breaker comprises a circuit breaker body and an isolation switch, wherein one of a bracket and an isolation rotating shaft of the isolation switch is provided with a travel switch structure, and the other one is provided with a trigger part; or the travel switch structure comprises a closing travel switch and an opening travel switch; or the switch-on travel switch and the switch-off travel switch are circumferentially distributed on the bracket; or the forward rotation control loop is controlled based on the closing travel switch, the reverse rotation control loop is controlled by the opening travel switch, and the triggering part is a single triggering part which only triggers one of the closing travel switch and the opening travel switch. The trigger part is arranged on the isolation rotating shaft and comprises a trigger block used for jacking the trigger end of the travel switch structure, the trigger block is provided with a direction-changing jacking face, and the direction-changing jacking face is used for converting the circumferential rotation of the trigger block into the axial movement of the trigger end of the corresponding travel switch.
The isolation-based circuit breaker comprises a circuit breaker body and an isolation switch, wherein one of a bracket and an isolation rotating shaft of the isolation switch is provided with a travel switch structure, and the other one is provided with a trigger part; or the travel switch structure comprises a closing travel switch and an opening travel switch; or the switch-on travel switch and the switch-off travel switch are circumferentially distributed on the bracket; or the forward rotation control loop is controlled based on the closing travel switch, the reverse rotation control loop is controlled by the opening travel switch, and the triggering part is a single triggering part which only triggers one of the closing travel switch and the opening travel switch. The isolation rotating shaft is provided with a radially extending limiting crank arm, the support is provided with a closing limiting part which is in stop fit with the limiting crank arm along the circumferential direction at the closing rotating tail end of the isolation rotating shaft, and the support is further provided with an opening limiting part which is in stop fit with the limiting crank arm along the circumferential direction at the opening rotating tail end of the isolation rotating shaft. Through the matching of the closing limiting part and the limiting crank arm, the closing rotation over-position of the isolation rotating shaft can be avoided; through the cooperation of separating brake locating part and spacing connecting lever, can avoid keeping apart the pivot separating brake rotation and cross the position.
The isolation-based circuit breaker comprises a circuit breaker body and an isolation switch, wherein one of a bracket and an isolation rotating shaft of the isolation switch is provided with a travel switch structure, and the other one is provided with a trigger part; or the travel switch structure comprises a closing travel switch and an opening travel switch; or the switch-on travel switch and the switch-off travel switch are circumferentially distributed on the bracket; or the forward rotation control loop is controlled based on the closing travel switch, the reverse rotation control loop is controlled by the opening travel switch, and the triggering part is a single triggering part which only triggers one of the closing travel switch and the opening travel switch. The two ends of the isolation rotating shaft correspondingly extend to the outside of the support, one end of the isolation rotating shaft is connected with the motor in a transmission mode, and the other end of the isolation rotating shaft is provided with a manual operation handle. The isolation rotating shaft can be driven to rotate by the motor, and can also be driven to rotate by the manual operating handle, so that integration of two modes is realized.
The technical scheme of the isolating switch is as follows: the utility model provides an isolator, includes electronic isolation chassis, electronic isolation chassis is including being used for installing the support on the circuit breaker body, rotate on the support and install the isolation pivot, be equipped with isolation end part in the isolation pivot, be equipped with corotation on the support and drive isolation pivot combined floodgate rotation, reversal drive isolation pivot separating brake pivoted motor, isolator still includes and is triggered with the control motor corotation at isolation pivot combined floodgate pivoted end and stops, is triggered with the travel switch structure that control motor reversal stopped at isolation pivot separating brake pivoted end, and isolator still includes the trigger part that is used for triggering the travel switch structure, one of trigger part and travel switch structure is located on the support, another is located in the isolation pivot.
And as a further optimization of a travel switch structure, the travel switch structure comprises a closing travel switch for controlling the motor to rotate forwards and stop after being triggered and a separating travel switch for controlling the motor to rotate backwards and stop after being triggered.
The travel switch structure comprises a closing travel switch and an opening travel switch, and the closing travel switch and the opening travel switch are distributed on the support along the circumference of the isolation rotating shaft specifically to the setting positions of the closing travel switch and the opening travel switch.
The travel switch structure comprises a closing travel switch and a separating travel switch, the isolating switch comprises a forward rotation control loop and a reverse rotation control loop, the forward rotation control loop is used for controlling the motor to rotate forward to start and stop, the reverse rotation control loop is used for controlling the motor to rotate reversely to start and stop, the control switches are additionally arranged on the forward rotation loop and the reverse rotation loop, the closing travel switch is connected with the forward rotation control loop in a control mode, the separating travel switch is connected with the reverse rotation control loop in a control mode, the closing travel switch and the separating travel switch are both normally-open travel switches which are used for disconnecting the corresponding control loops when being triggered and conducting the corresponding control loops when not being triggered, and the triggering part is a single triggering part which can only trigger one of the closing travel.
The isolating switch comprises a bracket, one of the bracket and the isolating rotating shaft of the isolating switch is provided with a travel switch structure, and the other is provided with a trigger part; or the travel switch structure comprises a closing travel switch and an opening travel switch; or the switch-on travel switch and the switch-off travel switch are circumferentially distributed on the bracket; or the forward rotation control loop is controlled based on the closing travel switch, the reverse rotation control loop is controlled by the opening travel switch, and the triggering part is a single triggering part which only triggers one of the closing travel switch and the opening travel switch. The trigger part is arranged on the isolation rotating shaft and comprises a trigger block used for jacking the trigger end of the travel switch structure, the trigger block is provided with a direction-changing jacking face, and the direction-changing jacking face is used for converting the circumferential rotation of the trigger block into the axial movement of the trigger end of the corresponding travel switch.
The isolating switch comprises a bracket, one of the bracket and the isolating rotating shaft of the isolating switch is provided with a travel switch structure, and the other is provided with a trigger part; or the travel switch structure comprises a closing travel switch and an opening travel switch; or the switch-on travel switch and the switch-off travel switch are circumferentially distributed on the bracket; or the forward rotation control loop is controlled based on the closing travel switch, the reverse rotation control loop is controlled by the opening travel switch, and the triggering part is a single triggering part which only triggers one of the closing travel switch and the opening travel switch. The isolation rotating shaft is provided with a radially extending limiting crank arm, the support is provided with a closing limiting part which is in stop fit with the limiting crank arm along the circumferential direction at the closing rotating tail end of the isolation rotating shaft, and the support is further provided with an opening limiting part which is in stop fit with the limiting crank arm along the circumferential direction at the opening rotating tail end of the isolation rotating shaft.
The isolating switch comprises a bracket, one of the bracket and the isolating rotating shaft of the isolating switch is provided with a travel switch structure, and the other is provided with a trigger part; or the travel switch structure comprises a closing travel switch and an opening travel switch; or the switch-on travel switch and the switch-off travel switch are circumferentially distributed on the bracket; or the forward rotation control loop is controlled based on the closing travel switch, the reverse rotation control loop is controlled by the opening travel switch, and the triggering part is a single triggering part which only triggers one of the closing travel switch and the opening travel switch. The two ends of the isolation rotating shaft correspondingly extend to the outside of the support, one end of the isolation rotating shaft is connected with the motor in a transmission mode, and the other end of the isolation rotating shaft is provided with a manual operation handle.
The technical scheme of the electric isolation underframe for the isolating switch is as follows: the utility model provides an isolator is with electronic isolation chassis, is including being used for installing the support on the circuit breaker, rotates on the support to install and keeps apart the pivot, is equipped with corotation on the support and drives isolation pivot combined floodgate rotation, reversal drive and keeps apart pivot separating brake pivoted motor, and electronic isolation chassis still includes and is triggered in order to control motor corotation to stop, is triggered in order to control the travel switch structure that the motor reversal stopped at isolation pivot separating brake pivoted end, and electronic isolation chassis is still including the trigger part that is used for triggering the travel switch structure, one in trigger part and the travel switch structure is located on the support, another is located keep apart in the pivot.
And as a further optimization of a travel switch structure, the travel switch structure comprises a closing travel switch for controlling the motor to rotate forwards and stop after being triggered and a separating travel switch for controlling the motor to rotate backwards and stop after being triggered.
The travel switch structure comprises a closing travel switch and an opening travel switch, and the closing travel switch and the opening travel switch are distributed on the support along the circumference of the isolation rotating shaft specifically to the setting positions of the closing travel switch and the opening travel switch.
The travel switch structure comprises a closing travel switch and a separating travel switch, the electric isolation chassis comprises a forward rotation control loop and a reverse rotation control loop, the forward rotation control loop is used for controlling the motor to rotate forward to start and stop, the reverse rotation control loop is used for controlling the motor to rotate reversely to start and stop, the control switches are additionally arranged on the forward rotation loop and the reverse rotation loop, the closing travel switch is connected with the forward rotation control loop in a control mode, the separating travel switch is connected with the reverse rotation control loop in a control mode, the closing travel switch and the separating travel switch are both normally-open travel switches which are used for disconnecting the corresponding control loops when being triggered and conducting the corresponding control loops when not being triggered, and the trigger part is a single trigger part which can only trigger one of the closing.
The electric isolation underframe comprises a bracket, one of the bracket and an isolation rotating shaft is provided with a travel switch structure, and the other is provided with a trigger part; or the travel switch structure comprises a closing travel switch and an opening travel switch; or the switch-on travel switch and the switch-off travel switch are circumferentially distributed on the bracket; or the forward rotation control loop is controlled based on the closing travel switch, the reverse rotation control loop is controlled by the opening travel switch, and the triggering part is a single triggering part which only triggers one of the closing travel switch and the opening travel switch. The trigger part is arranged on the isolation rotating shaft and comprises a trigger block used for jacking the trigger end of the travel switch structure, the trigger block is provided with a direction-changing jacking face, and the direction-changing jacking face is used for converting the circumferential rotation of the trigger block into the axial movement of the trigger end of the corresponding travel switch.
The electric isolation underframe comprises a bracket, one of the bracket and an isolation rotating shaft is provided with a travel switch structure, and the other is provided with a trigger part; or the travel switch structure comprises a closing travel switch and an opening travel switch; or the switch-on travel switch and the switch-off travel switch are circumferentially distributed on the bracket; or the forward rotation control loop is controlled based on the closing travel switch, the reverse rotation control loop is controlled by the opening travel switch, and the triggering part is a single triggering part which only triggers one of the closing travel switch and the opening travel switch. The isolation rotating shaft is provided with a radially extending limiting crank arm, the support is provided with a closing limiting part which is in stop fit with the limiting crank arm along the circumferential direction at the closing rotating tail end of the isolation rotating shaft, and the support is further provided with an opening limiting part which is in stop fit with the limiting crank arm along the circumferential direction at the opening rotating tail end of the isolation rotating shaft.
The electric isolation underframe comprises a bracket, one of the bracket and an isolation rotating shaft is provided with a travel switch structure, and the other is provided with a trigger part; or the travel switch structure comprises a closing travel switch and an opening travel switch; or the switch-on travel switch and the switch-off travel switch are circumferentially distributed on the bracket; or the forward rotation control loop is controlled based on the closing travel switch, the reverse rotation control loop is controlled by the opening travel switch, and the triggering part is a single triggering part which only triggers one of the closing travel switch and the opening travel switch. The two ends of the isolation rotating shaft correspondingly extend to the outside of the support, one end of the isolation rotating shaft is connected with the motor in a transmission mode, and the other end of the isolation rotating shaft is provided with a manual operation handle.
Drawings
Fig. 1 is a schematic diagram of an embodiment of an isolation type circuit breaker of the present invention;
fig. 2 is a schematic view of the electrically isolated chassis of fig. 1 in a closed state;
FIG. 3 is a schematic view of the electrically isolated undercarriage of FIG. 1 in an open position;
FIG. 4 is a side view of the electrically isolated chassis of FIG. 1;
FIG. 5 is a schematic diagram of the trigger block of FIG. 2;
FIG. 6 is a schematic diagram of the remote control of FIG. 2;
fig. 7 is a schematic circuit diagram of the present invention.
In fig. 7, CK1 is a closing locking travel switch; CK2 is a brake separating and locking travel switch; 1SB is a minute button; 2SB is a close button.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 7, the isolated circuit breaker of the present invention includes a breaker body 30, the breaker body includes a fixed block 28, a three-phase terminal outgoing line 34 is disposed on the fixed block 28, and a switching indication shaft 35 is further mounted on the housing. A disconnector is integrated on the circuit breaker body 30, and comprises an electric isolation underframe and a movable contact knife 32 arranged on the electric isolation underframe.
Wherein, electronic isolation chassis is including fixing support 1 on the circuit breaker body, and support 1 is including upper and lower interval arrangement's roof-rack and chassis, all offers along controlling the direction (the axial of keeping apart pivot 2 promptly) interval arrangement's three mounting hole 23 of group on roof-rack and the chassis, and mounting hole 23 on roof-rack and the chassis corresponds from top to bottom for install isolator's three-phase monomer. Specifically, the insulating pillars 29 are mounted in the mounting holes 23 of the top frame and the bottom frame, the insulating terminal block 31 is mounted on each insulating pillar 29, and the lower insulating terminal block 31 is connected to the terminal outlet 34 of the circuit breaker through the flexible connection 33. The movable contact knife 32 is rotatably installed on the lower isolation wiring board 31 through a bolt, and the movable contact knife 32 can be electrically connected with the two isolation wiring boards and can also be disconnected with the two isolation wiring boards.
The isolation rotating shaft 2 penetrates through the support 1 in the left-right direction, the isolation rotating shaft 2 is rotatably installed on the support, and the two axial ends of the isolation rotating shaft penetrate out of the support 1. Three groups of connecting crank arms 3 are arranged on the isolating rotating shaft 2 at intervals along the axial direction, and when the isolating rotating shaft is used in particular, an isolating pull rod is arranged on the connecting crank arms 3, one end of the isolating pull rod is arranged on the connecting crank arms 3, and the other end of the isolating pull rod is connected with a movable contact knife 32. The movable contact knife 32 can be driven to be communicated with the two isolation wiring boards through the forward rotation of the isolation rotating shaft 2, and the two isolation wiring boards can be disconnected through the reverse rotation of the isolation rotating shaft. The connecting crank arm 3, the isolating pull rod and the movable contact knife 32 form an isolating movable end part. The above-mentioned contents are all contents in the prior art, and are consistent with the content with the authorization notice number of CN 205670515U.
Install gear sleeve 13 on the end is worn out to the right side of keeping apart pivot 2, install first bevel gear 14 on gear sleeve 13, simultaneously, still install motor mounting bracket 15 in the right-hand member outside of support 1, install motor 19 through upper and lower two sets of staple bolts 18 on the motor mounting bracket 15, the output shaft 17 of motor 19 upwards extends. The output shaft 17 of the motor is provided with a second bevel gear 16 in a rotating way, and the first bevel gear 14 and the second bevel gear 16 are meshed with each other, so that the motor 19 can drive the isolating rotating shaft 2 to rotate. The motor 19 of the present invention can realize both forward rotation and reverse rotation. The isolation rotating shaft can be driven to realize switching-on through positive rotation of the motor, and the isolation rotating shaft can be driven to realize switching-off through negative rotation. The parts of the first bevel gear 14 and the second bevel gear 16 in the invention can leak outside or can be covered by a protective cover for isolation.
A circuit board 22 is further mounted below the motor mounting frame 15, a protective cover 20 is mounted outside the circuit board 22, and a remote controller 21 is bonded on the protective cover 20. The remote controller 21 is provided with a minute button 24, a close button 25 and a wake-up button 26. The circuit board 22 is provided with a closing output node and an opening output node, and is further provided with a closing locking node and an opening locking node. Specifically, the on button 24 and the coil of the motor on the remote controller are connected in series to the on output node, and the off button 25 and the coil of the motor on the remote controller are connected in series to the off output node. A closing travel switch 6 is also connected to the closing locking node, and an opening travel switch 7 is also connected to the opening locking node. As can be seen from the above, the closing output node, the closing locking node and the closing button are connected in series to form a closing control loop, so as to control the forward rotation of the motor and enable the motor to drive the isolated rotating shaft to perform closing operation; the opening output node, the opening locking node and the opening button are connected in series to form an opening control loop so as to control the reverse rotation of the motor and enable the motor to drive the isolation rotating shaft to perform opening operation. Meanwhile, the power input contact of the circuit board is connected with a 220V power supply. The specific mode of the travel switch connected to the circuit board can be selected according to actual conditions, for example, the travel switch and the locking node can be in a signal control connection relationship or in a conductive connection relationship. In this embodiment, the connection relationship is controlled by a signal.
In this embodiment, both the closing travel switch 6 and the opening travel switch 7 are mounted on the bracket 1, specifically, the bracket 1 is fixed with the first mounting plate 5, and the closing travel switch 6 is disposed on the first mounting plate 5; a second mounting plate 8 is fixed to the bracket 1, and the opening travel switch 7 is provided on the second mounting plate 8. The first mounting plate 5 and the second mounting plate 8 are sequentially arranged along the axial direction of the isolation rotating shaft 2 and are positioned between two connecting crank arms 3, and the closing travel switch 6 and the opening travel switch 7 are sequentially arranged along the circumferential direction. In this embodiment, the closing travel switch 6 and the opening travel switch 7 are both normally open travel switches, the closing travel switch 6 and the opening travel switch 7 both include trigger ends that can be pressed, and the trigger ends are provided with rollers 9. The opening travel switch is the opening locking travel switch, and the closing travel switch is the closing locking travel switch. When the trigger end of the closing travel switch 6 is pressed, a closing point signal is output to a closing locking node, the closing locking node is disconnected, a closing control loop is disconnected, the motor stops rotating forwards, and closing is completed. When the triggering end of the closing travel switch is not jacked, an opening point signal is output to a closing locking node, and a closing control loop is conducted, so that the closing button can control the motor to rotate forwards. When the trigger end of the opening travel switch is pressed, a closing point signal is output to the opening locking node, the opening locking node is disconnected, the opening control loop is disconnected, the motor stops reversing, and opening is completed. When the trigger end of the opening travel switch is not jacked, an opening point signal is output to the opening locking node, the opening control loop is conducted, and the opening button can control the motor to rotate reversely. The two trigger blocks constitute a trigger part, and as can be seen from the above, the trigger part is a one-shot part and can trigger only one of the closing stroke switch and the opening stroke switch. In other embodiments, the closing travel switch 6 and the opening travel switch 7 may be axially and correspondingly disposed on the bracket 1, only one trigger block may be included in the trigger portion, and the closing travel switch 6 and the opening travel switch 7 may be respectively triggered on a rotation stroke of the single trigger block. The two travel switches form a travel switch structure, and in other embodiments, the travel switch structure can be arranged on the isolation rotating shaft to enable the trigger part to be positioned on the bracket. In other embodiments, the travel switch structure may include only one travel switch having two trigger ends.
In this embodiment, the trigger blocks 4 are installed on the middle connecting crank arm 3 and the right connecting crank arm 3, the structure of the trigger block 4 is as shown in fig. 5, the trigger block 4 has an arc-shaped top pressing surface 27, and the circumferential rotation of the trigger block 4 can be converted into the axial movement of the trigger end of the travel switch to trigger the corresponding travel switch. The trigger ends of the closing travel switch and the opening travel switch are axially corresponding to the trigger block. In the invention, the triggering ends of the closing travel switch and the opening travel switch are both provided with rollers.
Meanwhile, the isolation rotating shaft is further provided with a limiting crank arm 11, limiting blocks 10 are arranged on the support 1 and axially correspond to the limiting crank arm 11, each limiting block 10 is provided with a bolt 12, and the head of each bolt faces the isolation rotating shaft 2. Specifically, when the isolation rotating shaft rotates to the tail end in the closing direction, the limiting crank arm can be in blocking fit with the bolt above along the circumferential direction, and the isolation rotating shaft is prevented from continuing to rotate in the closing direction; when the isolation rotating shaft rotates to the tail end in the opening direction, the limiting connecting lever can be in blocking fit with the bolt below along the circumferential direction, and the isolation rotating shaft is prevented from continuing to rotate in the opening direction. The bolt and the corresponding limiting block at the upper part form a closing limiting part, and the bolt and the corresponding limiting block at the lower part form opening limiting.
In this embodiment, the operation handle 36 is installed at the left penetrating end of the isolation rotating shaft, so that the isolation rotating shaft of the present invention can be driven to rotate by the motor and can also be manually operated.
In order to avoid that the disconnecting switch is firstly disconnected when the circuit is overhauled, namely, the disconnecting switch is disconnected when the circuit breaker is in a closing state, the interlocking crank arm 39 is arranged at the left end of the isolating rotating shaft. A link plate 37 is attached to the opening/closing indication shaft 35 of the circuit breaker body, a link plate shaft 38 is attached to the link plate 37, the right end of the link plate shaft 38 passes through the holder, and the right end of the link plate shaft 38 axially corresponds to the interlock lever 39. The bracket is provided with a long hole which extends up and down and is used for the connecting plate shaft to pass through. When the circuit breaker body is in a switching-on position, the switching-off and switching-on indicating shaft can place the connecting plate shaft at an upper limit position through the connecting plate, at the moment, the connecting plate shaft and the interlocking connecting lever are mutually blocked in the circumferential direction, the connecting plate shaft is positioned at one side of the interlocking connecting lever, which rotates towards the switching-off direction, the interlocking connecting lever is prevented from rotating towards the switching-off direction through the blocking of the connecting plate shaft, and further, the disconnecting switch is prevented from being electrified and disconnected.
The use process of the invention is as follows: when the isolating switch is at a switching-on position, one of the trigger blocks presses and triggers the switching-on travel switch, a switching-on control loop corresponding to the switching-on travel switch is disconnected, so that the switching-on button cannot control the motor to rotate in the forward direction, the switching-off travel switch is not triggered, a switching-off control loop corresponding to the switching-off travel switch is switched on, at the moment, the awakening button on the remote controller is pressed, the switching-off button is pressed, the motor rotates in the reverse direction, and the isolating rotating shaft is driven to rotate towards the switching-off direction. When another trigger block in the isolation rotating shaft presses a roller for triggering the opening travel switch, the opening control loop corresponding to the opening travel switch is disconnected, the motor stops rotating reversely, and opening is completed. At this time, the closing travel switch is in a natural state and is not triggered, and a closing control loop corresponding to the closing travel switch is conducted, so that closing operation can be performed.
The situation during closing operation is similar to that during opening operation, and detailed description is omitted in the present invention.
In the specific embodiment of the isolating switch of the invention, the structure of the isolating switch is the same as that in the above embodiment, and the details are not repeated.
In the specific embodiment of the electric isolation underframe for the isolating switch, the structure of the electric isolation underframe for the isolating switch is the same as that in the embodiment, and the details are not repeated.
Claims (15)
1. The utility model provides an isolated circuit breaker, includes circuit breaker body and isolator, isolator rotates on the support and installs isolation pivot, its characterized in that including locating the support on the circuit breaker body on the support: the isolating circuit breaker further comprises a trigger part for triggering the travel switch structure, wherein one of the trigger part and the travel switch structure is arranged on the support, and the other one of the trigger part and the travel switch structure is arranged on the isolating rotating shaft; the travel switch structure comprises a closing travel switch and a breaking travel switch, wherein the closing travel switch controls the motor to rotate forwards and stop after being triggered; the isolated circuit breaker comprises a forward rotation control loop and a reverse rotation control loop, the forward rotation control loop is used for controlling the motor to rotate forward to start and stop, the reverse rotation control loop is used for controlling the motor to rotate reversely to start and stop, control switches are additionally arranged on the forward rotation loop and the reverse rotation loop, a closing travel switch is connected with the forward rotation control loop in a control mode, an opening travel switch is connected with the reverse rotation control loop in a control mode, the closing travel switch and the opening travel switch are normally-open travel switches which are used for disconnecting the corresponding control loops when being triggered and conducting the corresponding control loops when not being triggered, and the triggering portion is a single triggering portion which can trigger only one of the closing travel switch and the.
2. The disconnecting circuit breaker according to claim 1, wherein: and the closing travel switch and the opening travel switch are distributed on the bracket along the circumference of the isolation rotating shaft.
3. The disconnecting circuit breaker according to claim 1 or 2, characterized in that: the trigger part is arranged on the isolation rotating shaft and comprises a trigger block used for jacking the trigger end of the travel switch structure, the trigger block is provided with a direction-changing jacking face, and the direction-changing jacking face is used for converting the circumferential rotation of the trigger block into the axial movement of the trigger end of the corresponding travel switch.
4. The disconnecting circuit breaker according to claim 1 or 2, characterized in that: the isolation rotating shaft is provided with a radially extending limiting crank arm, the support is provided with a closing limiting part which is in stop fit with the limiting crank arm along the circumferential direction at the closing rotating tail end of the isolation rotating shaft, and the support is further provided with an opening limiting part which is in stop fit with the limiting crank arm along the circumferential direction at the opening rotating tail end of the isolation rotating shaft.
5. The disconnecting circuit breaker according to claim 1 or 2, characterized in that: the two ends of the isolation rotating shaft correspondingly extend to the outside of the support, one end of the isolation rotating shaft is connected with the motor in a transmission mode, and the other end of the isolation rotating shaft is provided with a manual operation handle.
6. The utility model provides an isolator, includes electronic isolation chassis, electronic isolation chassis is including being used for installing the support on the circuit breaker body, rotate on the support and install the isolation pivot, be equipped with isolation end part, its characterized in that in the isolation pivot: the isolating switch also comprises a travel switch structure which is triggered at the tail end of the closing rotation of the isolating rotating shaft to control the motor to stop in a forward rotation manner and triggered at the tail end of the opening rotation of the isolating rotating shaft to control the motor to stop in a reverse rotation manner, and the isolating switch also comprises a trigger part for triggering the travel switch structure, wherein one of the trigger part and the travel switch structure is arranged on the support, and the other one of the trigger part and the travel switch structure is arranged on the isolating rotating shaft; the travel switch structure comprises a closing travel switch and a breaking travel switch, wherein the closing travel switch controls the motor to rotate forwards and stop after being triggered; the isolating switch comprises a forward rotation control loop and a reverse rotation control loop, the forward rotation control loop is used for controlling the motor to rotate forward to start and stop, the reverse rotation control loop is used for controlling the motor to rotate reversely to start and stop, control switches are additionally arranged on the forward rotation loop and the reverse rotation loop, a closing travel switch is connected with the forward rotation control loop in a control mode, an opening travel switch is connected with the reverse rotation control loop in a control mode, the closing travel switch and the opening travel switch are normally-open travel switches which are used for disconnecting the corresponding control loops when being triggered and conducting the corresponding control loops when not being triggered, and the triggering portion is a single triggering portion which can trigger only one of the closing travel switch and the opening.
7. The isolating switch of claim 6, wherein: and the closing travel switch and the opening travel switch are distributed on the bracket along the circumference of the isolation rotating shaft.
8. A disconnector according to claim 6 or 7, characterized in that: the trigger part is arranged on the isolation rotating shaft and comprises a trigger block used for jacking the trigger end of the travel switch structure, the trigger block is provided with a direction-changing jacking face, and the direction-changing jacking face is used for converting the circumferential rotation of the trigger block into the axial movement of the trigger end of the corresponding travel switch.
9. A disconnector according to claim 6 or 7, characterized in that: the isolation rotating shaft is provided with a radially extending limiting crank arm, the support is provided with a closing limiting part which is in stop fit with the limiting crank arm along the circumferential direction at the closing rotating tail end of the isolation rotating shaft, and the support is further provided with an opening limiting part which is in stop fit with the limiting crank arm along the circumferential direction at the opening rotating tail end of the isolation rotating shaft.
10. A disconnector according to claim 6 or 7, characterized in that: the two ends of the isolation rotating shaft correspondingly extend to the outside of the support, one end of the isolation rotating shaft is connected with the motor in a transmission mode, and the other end of the isolation rotating shaft is provided with a manual operation handle.
11. The utility model provides an isolator is with electronic isolation chassis, is including being used for installing the support on the circuit breaker, rotates on the support to install and keeps apart pivot, its characterized in that: the electric isolation underframe also comprises a trigger part for triggering the travel switch structure, wherein one of the trigger part and the travel switch structure is arranged on the support, and the other one of the trigger part and the travel switch structure is arranged on the isolation rotating shaft; the travel switch structure comprises a closing travel switch and a breaking travel switch, wherein the closing travel switch controls the motor to rotate forwards and stop after being triggered; the electric isolation chassis comprises a forward rotation control loop and a reverse rotation control loop, the forward rotation control loop is used for controlling the motor to rotate forward to start and stop, the reverse rotation control loop is used for controlling the motor to rotate reversely to start and stop, control switches are additionally arranged on the forward rotation loop and the reverse rotation loop, a closing travel switch is connected with the forward rotation control loop in a control mode, an opening travel switch is connected with the reverse rotation control loop in a control mode, the closing travel switch and the opening travel switch are normally-open travel switches which are used for disconnecting the corresponding control loops when being triggered and conducting the corresponding control loops when not being triggered, and the triggering portion is a single triggering portion which can trigger only one of the closing travel switch and the.
12. An electrically isolating under-frame for a disconnector according to claim 11, characterized in that: and the closing travel switch and the opening travel switch are distributed on the bracket along the circumference of the isolation rotating shaft.
13. An electrically isolating under-frame for isolating switches according to claim 11 or 12, characterised in that: the trigger part is arranged on the isolation rotating shaft and comprises a trigger block used for jacking the trigger end of the travel switch structure, the trigger block is provided with a direction-changing jacking face, and the direction-changing jacking face is used for converting the circumferential rotation of the trigger block into the axial movement of the trigger end of the corresponding travel switch.
14. An electrically isolating under-frame for isolating switches according to claim 11 or 12, characterised in that: the isolation rotating shaft is provided with a radially extending limiting crank arm, the support is provided with a closing limiting part which is in stop fit with the limiting crank arm along the circumferential direction at the closing rotating tail end of the isolation rotating shaft, and the support is further provided with an opening limiting part which is in stop fit with the limiting crank arm along the circumferential direction at the opening rotating tail end of the isolation rotating shaft.
15. An electrically isolating under-frame for isolating switches according to claim 11 or 12, characterised in that: the two ends of the isolation rotating shaft correspondingly extend to the outside of the support, one end of the isolation rotating shaft is connected with the motor in a transmission mode, and the other end of the isolation rotating shaft is provided with a manual operation handle.
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| CN201810403635.4A CN108550490B (en) | 2018-04-28 | 2018-04-28 | Isolated circuit breaker, isolating switch and electric isolation underframe thereof |
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| CN201810403635.4A CN108550490B (en) | 2018-04-28 | 2018-04-28 | Isolated circuit breaker, isolating switch and electric isolation underframe thereof |
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| CN108550490B true CN108550490B (en) | 2020-05-05 |
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| CN113725033B (en) * | 2021-09-09 | 2023-01-31 | 石家庄开发区新导配电自动化有限公司 | High-voltage isolating switch, switching-on/off mechanism and switching-on/off method |
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| CN108550490A (en) | 2018-09-18 |
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