CN114388281B - Circuit breaker and grounding switch linkage mechanism for ring main unit - Google Patents
Circuit breaker and grounding switch linkage mechanism for ring main unit Download PDFInfo
- Publication number
- CN114388281B CN114388281B CN202111526090.4A CN202111526090A CN114388281B CN 114388281 B CN114388281 B CN 114388281B CN 202111526090 A CN202111526090 A CN 202111526090A CN 114388281 B CN114388281 B CN 114388281B
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- crank arm
- isolation
- spring
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- 230000007246 mechanism Effects 0.000 title claims abstract description 90
- 238000002955 isolation Methods 0.000 claims abstract description 150
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000004146 energy storage Methods 0.000 claims description 71
- 238000005452 bending Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 15
- 238000000926 separation method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/38—Driving mechanisms, i.e. for transmitting driving force to the contacts using spring or other flexible shaft coupling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A circuit breaker and earthing switch link gear for looped netowrk cabinet, it includes: the isolating grounding mechanism and the circuit breaker mechanism are arranged below the isolating grounding mechanism; the isolating and grounding mechanism comprises an isolating mechanism and a grounding mechanism; the isolation mechanism is a spring centering mechanism and is used for separating and combining the isolation knife; the grounding mechanism is a switching-on and switching-off mechanism which is linked with the circuit breaker and is used for storing energy in the switching-on process of the ground knife, releasing energy to complete the switching-on of the circuit breaker after the ground knife is reliably switched on, and triggering the switching-off of the circuit breaker through the linkage mechanism after the ground knife is switched on in place. According to the linkage mechanism, the operation steps of the overhaul and power transmission process in the upper isolation scheme are reduced from four to three, and the operation sequence is the same as that of a conventional lower isolation scheme, so that the operation steps of operators in the overhaul and power transmission process of the upper isolation scheme are simplified, and the safety of the operation process is ensured. The operating mechanism is compact in structure, convenient to operate, safe and reliable.
Description
Technical Field
The invention belongs to the technical field of intelligent power distribution equipment, and particularly relates to a linkage mechanism of a circuit breaker and a grounding switch for a ring main unit.
Background
When the line is overhauled, the original lower isolation scheme finishes cutting off the line and grounding protection through three steps of breaking the line-breaking isolation-closing the ground knife, and finishes line power transmission through three steps of breaking the ground knife-closing the isolation-closing the line-breaking isolation after the line is overhauled; whereas in the existing upper isolation scheme, the method comprises four steps of breaker-earthing knife-breaker and breaker-breaker the four steps of the device, the earth-separating knife, the closing isolation and the closing breaker are used for completing corresponding maintenance and power transmission operations. Compared with the lower isolation scheme, the method has the advantages that one more operation step is needed in the overhaul and power transmission process, the operation process is complex, and operators who are used to three-step overhaul and power transmission are easy to make mistakes in operation, so that accidents occur.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a circuit breaker and grounding switch linkage mechanism for a ring main unit.
The invention adopts the following technical scheme:
A circuit breaker and earthing switch link gear for looped netowrk cabinet, it includes: the circuit breaker mechanism is arranged below the isolating grounding mechanism; the isolating and grounding mechanism comprises an isolating mechanism and a grounding mechanism; the isolation mechanism is a spring centering mechanism and is used for separating and combining the isolation knife, and the isolation mechanism comprises: the isolation operation shaft assembly, the isolation spring assembly, the isolation side connecting rod, the spline main shaft crank arm, the spline main shaft and the isolation spring hanging spring shaft; the grounding mechanism is a switching-on and switching-off mechanism linked with the circuit breaker and is used for storing energy in the switching-on process of the grounding knife, releasing energy to complete the switching-on of the circuit breaker after the grounding knife is reliably switched on, and triggering the switching-off of the circuit breaker through the interlocking mechanism after the switching-off of the grounding knife is in place, and comprises a grounding operation shaft assembly, a circuit breaker switching-on linkage assembly, a circuit breaker switching-on energy storage assembly and a circuit breaker switching-off interlocking assembly; the isolation operation shaft assembly is connected to one end of the isolation spring assembly; the other end of the isolation spring assembly is fixed on the isolation spring hanging spring shaft; one end of the isolation side connecting rod is connected to an isolation sector plate of the isolation operation shaft assembly; the other end of the isolation side connecting rod is connected to the spline main shaft crank arm; the spline main shaft is arranged on the spline main shaft crank arm; the grounding operation shaft assembly is connected to the spline main shaft crank arm; the breaker closing linkage assembly is connected with the grounding operation shaft assembly; the breaker closing energy storage component is respectively connected with the isolation operation component and the grounding operation shaft component; and the breaker opening interlocking assembly is respectively connected with the spline main shaft and the grounding operation shaft assembly.
Preferably, the isolation operation shaft assembly comprises an isolation operation shaft, an isolation operation shaft crank arm, an isolation sector plate and an elastic cylindrical pin.
Preferably, the isolating operation shaft crank arm, the isolating sector plate and the elastic cylindrical pin are respectively welded and assembled on the isolating operation shaft.
Preferably, the isolation spring assembly comprises an isolation spring, an isolation spring guide bar, and an isolation spring flexure plate.
Preferably, one end of the isolation spring component is fixed on the isolation spring hanging spring shaft through an isolation spring guide rod, and the other end of the isolation spring component is connected with the isolation operation shaft crank arm through an isolation spring bent plate.
Preferably, the isolating spring is sleeved on the isolating spring guide rod.
Preferably, the isolation mechanism further comprises an isolation limiting shaft.
Preferably, the isolating limiting shaft is arranged above the isolating sector plate and used for limiting the rotation of the isolating sector plate.
Preferably, the ground operation shaft assembly includes a ground operation shaft, a cam crank arm, a cam, a ground sector plate, a ground side link, and an elastic cylindrical pin.
Preferably, the cam crank arm, the cam, the grounding sector plate and the elastic cylindrical pin are respectively welded and assembled on the grounding operation shaft.
Preferably, one end of the grounding side connecting rod is connected to the spline main shaft crank arm.
Preferably, the other end of the ground side link is connected to a ground sector plate.
Preferably, the ground operating shaft assembly further comprises a ground limiting shaft.
Preferably, the grounding limiting shaft is arranged above the grounding sector plate and used for limiting the rotation of the grounding sector plate.
Preferably, the breaker closing linkage assembly comprises an energy storage connecting rod, an energy storage connecting rod crank arm, an energy storage shaft crank arm, a large energy storage spring, a large spring bending plate, a large spring guide rod, an output shaft crank arm, a large spring linkage crank arm, a closing half shaft crank arm, a torsion spring, a linkage connecting rod, an internal spline crank arm and a breaker main shaft.
Preferably, one end of the energy storage connecting rod is connected to the cam crank arm.
Preferably, the other end of the energy storage connecting rod is connected with one end of the energy storage shaft through an energy storage connecting rod crank arm.
Preferably, one end of the energy storage shaft crank arm is connected with the other end of the energy storage shaft.
Preferably, the other end of the energy storage shaft crank arm is connected with a large spring bending plate.
Preferably, the large spring bending plate is connected to one end of the large spring guide rod through a large energy storage spring.
Preferably, the large energy storage spring is sleeved on the large spring guide rod.
Preferably, the output shaft is welded to the output shaft lever.
Preferably, the other end of the large spring guide rod is connected with the crank arm of the output shaft.
Preferably, the output shaft is also provided with a large spring linkage crank arm and a small spring linkage crank arm.
Preferably, one end of the closing half shaft crank arm is connected with the closing half shaft, and the other end of the closing half shaft crank arm is connected with the cam.
Preferably, a torsion spring is further arranged at the contact part of the closing half shaft and the closing half shaft crank arm.
Preferably, one end of the linkage connecting rod is connected to the crank arm of the output shaft, and the other end of the linkage connecting rod is connected with the main shaft of the circuit breaker through the crank arm of the internal spline.
Preferably, the length of the linkage link is adjustable.
Preferably, the breaker closing energy storage assembly comprises a small energy storage spring, a small spring bent plate, a small spring guide rod, a grounding shaft crank arm and a grounding shaft crank arm pin.
Preferably, the small energy storage spring is sleeved on the small spring guide rod.
Preferably, one end of the small spring guide rod is connected with the isolation operation shaft, and the other end of the small spring guide rod is connected to the grounding shaft crank arm through a small spring bending plate.
Preferably, the grounding shaft is assembled on the grounding shaft crank arm in a welding way.
Preferably, the grounding shaft crank arm is connected with the large and small spring linkage crank arms through a grounding shaft crank arm pin, so that the grounding shaft crank arm and the large and small spring linkage crank arms synchronously move.
Preferably, the breaker opening linkage assembly comprises an opening linkage internal spline crank arm, an opening linkage connecting rod and an opening linkage crank arm.
Preferably, the opening interlocking internal spline crank arm is assembled on the spline main shaft.
Preferably, one end of the opening interlocking connecting rod is connected with the opening interlocking internal spline crank arm, and the other end of the opening interlocking connecting rod is connected with the opening interlocking crank arm.
Compared with the prior art, the invention has the beneficial effects that:
According to the circuit breaker and grounding switch linkage mechanism for the ring main unit, the operation steps of the overhaul and power transmission process in the upper isolation scheme are reduced from four to three, and the operation sequence is the same as that of a customary lower isolation scheme, so that the operation steps of operators in the overhaul and power transmission process of the upper isolation scheme are simplified, and the safety of the operation process is ensured. The operating mechanism has the advantages of compact structure, convenient operation, good compatibility, safety, reliability and low cost.
Drawings
FIG. 1 is an overall assembly diagram of a circuit breaker and grounding switch linkage mechanism for a ring main unit of the present invention;
Fig. 2 is an overall assembly diagram of an isolation grounding mechanism of a circuit breaker and grounding switch linkage mechanism for a ring main unit;
fig. 3 is an overall assembly diagram of an isolation mechanism of a circuit breaker and grounding switch linkage mechanism for a ring main unit according to the present invention;
fig. 4 is an overall assembly diagram of a grounding mechanism of a circuit breaker and grounding switch linkage mechanism for a ring main unit according to the present invention;
fig. 5 is a schematic structural diagram of a grounding operation shaft assembly of a circuit breaker and grounding switch linkage mechanism for a ring main unit according to the present invention;
fig. 6 is a schematic diagram of a circuit breaker closing linkage assembly of a circuit breaker and grounding switch linkage mechanism for a ring main unit according to the present invention;
fig. 7 is a schematic diagram of a circuit breaker switching-on energy storage assembly of a circuit breaker and grounding switch linkage mechanism for a ring main unit;
Fig. 8 is a schematic diagram of a circuit breaker opening linkage assembly of a circuit breaker and grounding switch linkage mechanism for a ring main unit according to the present invention;
Reference numerals:
1-isolation mechanism, 2-grounding mechanism, 11-isolation operating shaft assembly, 12-isolation spring assembly, 13-isolation side connecting rod, 14-spline main shaft crank arm, 15-spline main shaft, 16-isolation spring hanging spring shaft, 17-isolation limiting shaft, 21-grounding operating shaft assembly, 22-circuit breaker closing linkage assembly, 24-circuit breaker closing energy storage assembly, 25-circuit breaker opening linkage assembly, 111-isolation operating shaft, 112-isolation operating shaft crank arm, 113-isolation fan-shaped plate, 114-elastic cylindrical pin, 121-isolation spring, 122-isolation spring guide rod, 123-isolation spring bent plate, 211-grounding operating shaft, 212-cam crank arm, 213-cam, 214-grounding fan-shaped plate, 215-grounding side connecting rod, 216-elastic cylindrical pin, 217-grounding limit shaft, 221-energy storage connecting rod, 222-energy storage connecting rod crank arm, 223-energy storage shaft, 224-energy storage shaft crank arm, 225-large energy storage spring, 226-large spring bent plate, 227-large spring guide rod, 228-output shaft, 229-output shaft crank arm, 230-large spring linkage crank arm, 231-closing half shaft, 232-closing half shaft crank arm, 233-torsion spring, 234-linkage connecting rod, 235-internal spline crank arm, 236-circuit breaker main shaft, 241-small energy storage spring, 242-small spring bent plate, 243-small spring guide rod, 244-grounding shaft, 245-grounding shaft crank arm, 246-grounding shaft crank arm pin, 251-opening linkage internal spline crank arm, 252-brake-separating linkage rod, 253-brake-separating linkage crank arm.
Detailed Description
The application is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and are not intended to limit the scope of the present application.
Fig. 1 is an overall assembly diagram of a circuit breaker and grounding switch linkage for a ring main unit of the present invention. As shown in fig. 1, the circuit breaker and grounding switch linkage mechanism for the ring main unit mainly comprises an isolation grounding mechanism and a circuit breaker mechanism.
Fig. 2 is an overall assembly diagram of an isolation grounding mechanism of a circuit breaker and grounding switch linkage mechanism for a ring main unit. As shown in fig. 2, the isolating and grounding mechanism mainly includes an isolating mechanism 1 and a grounding mechanism 2.
Fig. 3 is an overall assembly diagram of an isolation mechanism of a circuit breaker and grounding switch linkage mechanism for a ring main unit. As shown in fig. 3, the isolation mechanism 1 is a spring centering mechanism for separating and closing an isolation blade, and includes: an isolation operation shaft assembly 11, an isolation spring assembly 12, an isolation side connecting rod 13, a spline main shaft crank arm 14, a spline main shaft 15 and an isolation spring hanging spring shaft 16.
The isolation operation shaft assembly 11 is connected to one end of the isolation spring assembly 12, the other end of the isolation spring assembly 12 is fixed to the isolation spring hanging spring shaft 16, one end of the isolation side connecting rod 13 is connected to the isolation sector plate 113 of the isolation operation shaft assembly 11, the other end of the isolation side connecting rod 13 is connected to the spline main shaft crank arm 14, and the spline main shaft 15 is mounted on the spline main shaft crank arm 14.
Specifically, the isolation operating shaft assembly 11 includes an isolation operating shaft 111, an isolation operating shaft lever 112, an isolation sector plate 113, and an elastic cylindrical pin 114.
The isolation operation shaft lever 112, the isolation sector plate 113, and the elastic cylindrical pin 114 are respectively welded and assembled on the isolation operation shaft 111.
The isolation spring assembly 12 includes an isolation spring 121, an isolation spring guide bar 122, and an isolation spring flexure plate 123.
One end of the isolation spring assembly 12 is fixed on the isolation spring hanging spring shaft 16 through an isolation spring guide rod 122, the other end is connected with the isolation operation shaft crank arm 112 through an isolation spring bent plate 123, and the isolation spring 121 is sleeved on the isolation spring guide rod 122.
The isolation mechanism 1 further includes an isolation limiting shaft 17. The separation limiting shaft 17 is disposed above the separation sector plate 113 for limiting the rotation of the separation sector plate 113.
When the isolation operation shaft assembly 12 is rotated, the isolation spring 121 can be enabled to compress and store energy along the isolation spring guide rod 122, after the isolation operation shaft assembly 11 runs through the idle stroke on the isolation sector plate 113, the isolation spring 121 is compressed to the limit position and freely releases energy, the isolation operation shaft assembly 11 drives the spline main shaft crank arm 14 through the isolation side connecting rod 13 to enable the spline main shaft 15 to rotate, and the isolation operation is stopped when the isolation sector plate 113 collides with the isolation limiting shaft 17, so that isolation opening and closing operation is realized.
Fig. 4 is an overall assembly view of a grounding mechanism of a circuit breaker and grounding switch linkage mechanism for a ring main unit according to the present invention. As shown in fig. 4, the grounding mechanism 2 is a switching-on and switching-off mechanism linked with the circuit breaker, and is used for storing energy in the process of switching-on of the ground knife, releasing energy to complete switching-on of the circuit breaker after the ground knife is reliably switched on, and triggering the switching-off of the circuit breaker through the linkage mechanism after the ground knife is switched on in place. The circuit breaker switching-on and switching-off linkage device comprises a grounding operation shaft assembly 21, a circuit breaker switching-on linkage assembly 22, a circuit breaker switching-on energy storage assembly 24 and a circuit breaker switching-off linkage assembly 25.
The grounding operation shaft assembly 21 is connected to the spline main shaft crank arm 14, the breaker closing linkage assembly 22 is connected to the grounding operation shaft assembly 21, the breaker closing energy storage assembly 24 is connected to the isolation operation assembly 11 and the grounding operation shaft assembly 21 respectively, and the breaker opening linkage assembly 25 is connected to the spline main shaft 15 and the grounding operation shaft assembly 21 respectively.
Fig. 5 is a schematic structural diagram of a grounding operation shaft assembly of a circuit breaker and grounding switch linkage mechanism for a ring main unit. As shown in fig. 5, the ground operation shaft assembly 21 includes a ground operation shaft 211, a cam lever 212, a cam 213, a ground sector plate 214, a ground side link 215, and an elastic cylindrical pin 216.
The cam lever 212, the cam 213, the ground sector plate 214, and the elastic cylindrical pin 216 are respectively welded and assembled to the ground operation shaft 211, one end of the ground side link 215 is connected to the spline main shaft lever 14, and the other end of the ground side link 215 is connected to the ground sector plate 214.
The ground operating shaft assembly 21 also includes a ground limiting shaft 217. The ground limiting shaft 217 is disposed above the ground sector plate 214 for limiting rotation of the ground sector plate 214.
When the grounding operation shaft 211 is rotated, the grounding sector plate 214 welded on the grounding operation shaft 211 drives the spline main shaft crank arm 14 through the grounding side connecting rod 215 to rotate the spline main shaft 15, and stops when the grounding sector plate 214 collides with the grounding limit shaft 217, thereby realizing the grounding opening and closing operation.
Fig. 6 is a schematic diagram of a circuit breaker closing linkage assembly of a circuit breaker and grounding switch linkage mechanism for a ring main unit. As shown in fig. 6, the circuit breaker closing linkage assembly 22 includes an energy storage link 221, an energy storage link lever 222, an energy storage shaft 223, an energy storage shaft lever 224, a large energy storage spring 225, a large spring bent plate 226, a large spring guide rod 227, an output shaft 228, an output shaft lever 229, a large and small spring linkage lever 230, a closing half shaft 231, a closing half shaft lever 232, a torsion spring 233, a linkage link 234, an internal spline lever 235, and a circuit breaker main shaft 236.
One end of the energy storage connecting rod 221 is connected to the cam crank arm 212, the other end of the energy storage connecting rod 221 is connected with one end of the energy storage shaft 223 through the energy storage connecting rod crank arm 222, one end of the energy storage shaft crank arm 224 is connected with the other end of the energy storage shaft 223, the other end of the energy storage shaft crank arm 224 is connected with the large spring bending plate 226, the large spring bending plate 226 is connected to one end of the large spring guide rod 227 through the large energy storage spring 225, the large energy storage spring 225 is sleeved on the large spring guide rod 227, the output shaft 228 is assembled on the output shaft crank arm 229 in a welding mode, the other end of the large spring guide rod 227 is connected with the output shaft crank arm 229, the output shaft 228 is further provided with a large spring linkage crank arm 230, one end of the closing half shaft crank arm 232 is connected with the closing half shaft 231, the other end of the closing half shaft 231 is connected with the cam 213, the contact part of the closing half shaft crank arm 232 is further provided with the torsion spring 233, one end of the linkage connecting rod 234 is connected with the crank arm 229, the other end of the linkage connecting rod is connected with the main shaft 236 through the inner spline crank arm 235, and the length of the linkage connecting rod 234 can be adjusted.
In the process of operating the grounding operation shaft assembly 21 to enable the grounding knife to be switched on, the cam crank arm 212 welded and assembled on the grounding operation shaft 211 drives the energy storage shaft 223 to rotate and compress the large energy storage spring 225 through the energy storage connecting rod 221, after the grounding knife contacts are reliably contacted, the cam 213 just pushes the switching-on half shaft crank arm 232 to enable the switching-on half shaft 231 to be opened so as to enable the output shaft 228 to rotate, energy of the large energy storage spring 225 is released, and the energy drives the main shaft 236 of the circuit breaker to rotate through the linkage connecting rod 234 and the inner spline crank arm 235 so that the circuit breaker can be switched on.
Fig. 7 is a schematic diagram of a circuit breaker closing energy storage assembly of a circuit breaker and grounding switch linkage mechanism for a ring main unit. As shown in fig. 7, the circuit breaker closing energy storage assembly 24 includes a small energy storage spring 241, a small spring bent plate 242, a small spring guide rod 243, a ground shaft 244, a ground shaft lever 245, and a ground shaft lever pin 246.
The small energy storage spring 241 is sleeved on the small spring guide rod 243, one end of the small spring guide rod 243 is connected with the isolation operation shaft 111, the other end of the small spring guide rod 243 is connected to the grounding shaft crank arm 245 through the small spring bent plate 242, the grounding shaft 244 is assembled on the grounding shaft crank arm 245 in a welding mode, and the grounding shaft crank arm 245 is connected with the large and small spring linkage crank arm 230 through the grounding shaft crank arm pin 246, so that the grounding shaft crank arm 245 and the large and small spring linkage crank arm 230 synchronously move.
When the closing half shaft 231 is opened and the energy of the large energy storage spring 225 is released, the output shaft 228 drives the grounding shaft 244 to rotate together through the large and small spring linkage crank arms 230 welded on the output shaft, and the energy stored by the small energy storage spring 241 is released together, so that the circuit breaker completes closing.
Fig. 8 is a schematic diagram of a circuit breaker opening linkage assembly of a circuit breaker and grounding switch linkage mechanism for a ring main unit. As shown in fig. 8, the breaker opening linkage assembly 25 includes an opening linkage female spline lever 251, an opening linkage link 252, and an opening linkage lever 253.
The opening interlocking internal spline crank arm 251 is assembled on the spline main shaft 15, one end of the opening interlocking connecting rod 252 is connected with the opening interlocking internal spline crank arm 251, and the other end is connected with the opening interlocking crank arm 253.
When the grounding operation shaft 211 is operated to perform opening, the opening interlocking inner spline crank arm 251 assembled on the spline main shaft 15 rotates along with the grounding operation shaft, when the grounding sector plate 214 collides with the grounding limiting shaft 217, the grounding knife is opened in place, and at the moment, the opening interlocking connecting rod 252 and the opening interlocking crank arm 253 matched with the opening interlocking inner spline crank arm 251 perform interlocking opening on the circuit breaker, so that the circuit breaker and the grounding knife finish opening operation together.
Compared with the prior art, the invention has the beneficial effects that:
According to the circuit breaker and grounding switch linkage mechanism for the ring main unit, the operation steps of the overhaul and power transmission process in the upper isolation scheme are reduced from four to three, and the operation sequence is the same as that of a customary lower isolation scheme, so that the operation steps of operators in the overhaul and power transmission process of the upper isolation scheme are simplified, and the safety of the operation process is ensured. The operating mechanism has the advantages of compact structure, convenient operation, good compatibility, safety, reliability and low cost.
While the applicant has described and illustrated the embodiments of the present invention in detail with reference to the drawings, it should be understood by those skilled in the art that the above embodiments are only preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not to limit the scope of the present invention, but any improvements or modifications based on the spirit of the present invention should fall within the scope of the present invention.
Claims (10)
1. A circuit breaker and earthing switch link gear for looped netowrk cabinet, it includes: isolation grounding mechanism and circuit breaker mechanism, its characterized in that:
The breaker mechanism is arranged below the isolation grounding mechanism;
the isolating and grounding mechanism comprises an isolating mechanism (1) and a grounding mechanism (2);
the isolation mechanism (1) is a spring centering mechanism and is used for separating and combining the isolation knife, and the isolation mechanism comprises: an isolation operation shaft assembly (11), an isolation spring assembly (12), an isolation side connecting rod (13), a spline main shaft crank arm (14), a spline main shaft (15) and an isolation spring hanging spring shaft (16);
The grounding mechanism (2) is a switching-on and switching-off mechanism linked with the circuit breaker and is used for storing energy in the process of switching on the ground knife, releasing energy to complete switching-on of the circuit breaker after the ground knife is reliably switched on, and triggering switching-off of the circuit breaker through a linkage mechanism after switching-on of the ground knife is in place, and comprises a grounding operation shaft assembly (21), a circuit breaker switching-on linkage assembly (22), a circuit breaker switching-on energy storage assembly (24) and a circuit breaker switching-off linkage assembly (25);
the isolating operation shaft assembly (11) is connected to one end of the isolating spring assembly (12);
The other end of the isolation spring assembly (12) is fixed on an isolation spring hanging spring shaft (16);
One end of the isolation side connecting rod (13) is connected to an isolation sector plate (113) of the isolation operation shaft assembly (11);
the other end of the isolation side connecting rod (13) is connected to a spline main shaft crank arm (14);
The spline main shaft (15) is arranged on the spline main shaft crank arm (14);
The grounding operation shaft assembly (21) is connected to the spline main shaft crank arm (14);
the breaker closing linkage assembly (22) is connected with the grounding operation shaft assembly (21);
The breaker closing energy storage assembly (24) is respectively connected with the isolation operation assembly (11) and the grounding operation shaft assembly (21);
The breaker opening linkage assembly (25) is connected with the spline main shaft (15) and the grounding operation shaft assembly (21) respectively.
2. The circuit breaker and grounding switch linkage mechanism for a ring main unit according to claim 1, wherein:
The isolation operation shaft assembly (11) comprises an isolation operation shaft (111), an isolation operation shaft crank arm (112), an isolation sector plate (113) and an elastic cylindrical pin (114);
the isolating operation shaft crank arm (112), the isolating sector plate (113) and the elastic cylindrical pin (114) are respectively welded and assembled on the isolating operation shaft (111).
3. The circuit breaker and grounding switch linkage mechanism for ring main units according to claim 2, wherein:
The isolation spring assembly (12) comprises an isolation spring (121), an isolation spring guide rod (122) and an isolation spring bending plate (123);
one end of the isolation spring assembly (12) is fixed on the isolation spring hanging spring shaft (16) through an isolation spring guide rod (122), and the other end of the isolation spring assembly is connected with the isolation operation shaft crank arm (112) through an isolation spring bent plate (123);
the isolating spring (121) is sleeved on the isolating spring guide rod (122).
4. A circuit breaker and grounding switch linkage for a ring main unit as claimed in claim 3, wherein:
the isolation mechanism (1) further comprises an isolation limiting shaft (17);
the isolation limiting shaft (17) is arranged above the isolation sector plate (113) and used for limiting rotation of the isolation sector plate (113).
5. The circuit breaker and grounding switch linkage mechanism for a ring main unit according to claim 1, wherein:
The grounding operation shaft assembly (21) comprises a grounding operation shaft (211), a cam crank arm (212), a cam (213), a grounding sector plate (214), a grounding side connecting rod (215) and an elastic cylindrical pin (216);
The cam crank arm (212), the cam (213), the grounding sector plate (214) and the elastic cylindrical pin (216) are respectively welded and assembled on the grounding operation shaft (211);
One end of the grounding side connecting rod (215) is connected to the spline main shaft crank arm (14);
The other end of the grounding side connecting rod (215) is connected to the grounding sector plate (214).
6. The circuit breaker and grounding switch linkage mechanism for a ring main unit according to claim 5, wherein:
The grounding operation shaft assembly (21) further comprises a grounding limit shaft (217);
The grounding limiting shaft (217) is arranged above the grounding sector plate (214) and used for limiting rotation of the grounding sector plate (214).
7. The circuit breaker and grounding switch linkage mechanism for a ring main unit according to claim 5, wherein:
The breaker closing linkage assembly (22) comprises an energy storage connecting rod (221), an energy storage connecting rod crank arm (222), an energy storage shaft (223), an energy storage shaft crank arm (224), a large energy storage spring (225), a large spring bent plate (226), a large spring guide rod (227), an output shaft (228), an output shaft crank arm (229), a large spring linkage crank arm (230), a closing half shaft (231), a closing half shaft crank arm (232), a torsion spring (233), a linkage connecting rod (234), an internal spline crank arm (235) and a breaker main shaft (236);
one end of the energy storage connecting rod (221) is connected to the cam crank arm (212);
the other end of the energy storage connecting rod (221) is connected with one end of an energy storage shaft (223) through an energy storage connecting rod crank arm (222);
one end of the energy storage shaft crank arm (224) is connected with the other end of the energy storage shaft (223);
the other end of the energy storage shaft crank arm (224) is connected with a large spring bending plate (226);
The large spring bending plate (226) is connected to one end of a large spring guide rod (227) through a large energy storage spring (225);
the large energy storage spring (225) is sleeved on the large spring guide rod (227);
The output shaft (228) is welded and assembled on the output shaft crank arm (229);
The other end of the large spring guide rod (227) is connected with an output shaft crank arm (229);
the output shaft (228) is also provided with a large spring linkage crank arm (230);
One end of the closing half shaft crank arm (232) is connected with the closing half shaft (231), and the other end of the closing half shaft crank arm is connected with the cam (213);
a torsion spring (233) is further arranged at the contact part of the closing half shaft (231) and the closing half shaft crank arm (232);
One end of the linkage connecting rod (234) is connected to the output shaft crank arm (229), and the other end of the linkage connecting rod is connected with the breaker main shaft (236) through the internal spline crank arm (235).
8. The circuit breaker and grounding switch linkage mechanism for a ring main unit as claimed in claim 7, wherein:
The length of the linkage link (234) is adjustable.
9. The circuit breaker and grounding switch linkage mechanism for a ring main unit as claimed in claim 7, wherein:
The breaker closing energy storage assembly (24) comprises a small energy storage spring (241), a small spring bent plate (242), a small spring guide rod (243), a grounding shaft (244), a grounding shaft crank arm (245) and a grounding shaft crank arm pin (246);
The small energy storage spring (241) is sleeved on the small spring guide rod (243);
One end of the small spring guide rod (243) is connected with the isolation operation shaft (111), and the other end of the small spring guide rod is connected to the grounding shaft crank arm (245) through the small spring bending plate (242);
The grounding shaft (244) is welded and assembled on the grounding shaft crank arm (245);
The grounding shaft crank arm (245) is connected with the large and small spring linkage crank arm (230) through a grounding shaft crank arm pin (246), so that the grounding shaft crank arm (245) and the large and small spring linkage crank arm (230) move synchronously.
10. The circuit breaker and grounding switch linkage mechanism for a ring main unit according to claim 9, wherein:
the breaker opening linkage assembly (25) comprises an opening linkage internal spline crank arm (251), an opening linkage connecting rod (252) and an opening linkage crank arm (253);
the opening interlocking internal spline crank arm (251) is assembled on the spline main shaft (15);
One end of the opening linkage connecting rod (252) is connected with an opening linkage internal spline crank arm (251), and the other end of the opening linkage connecting rod is connected with an opening linkage crank arm (253).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111526090.4A CN114388281B (en) | 2021-12-14 | 2021-12-14 | Circuit breaker and grounding switch linkage mechanism for ring main unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111526090.4A CN114388281B (en) | 2021-12-14 | 2021-12-14 | Circuit breaker and grounding switch linkage mechanism for ring main unit |
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| CN114388281B true CN114388281B (en) | 2024-05-10 |
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| CN117854975B (en) * | 2024-02-28 | 2024-06-18 | 肯劲集团有限公司 | Environment-friendly cabinet isolation operating mechanism with interlocking mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376628A (en) * | 2018-04-13 | 2018-08-07 | 浙江恒控电气有限公司 | A kind of multifunction combined vacuum circuit breaker |
| WO2021057521A1 (en) * | 2019-09-29 | 2021-04-01 | 中天电气技术有限公司 | High-reliability and long-service-life gas-insulated switchgear circuit breaker |
| CN113078009A (en) * | 2021-03-05 | 2021-07-06 | 福建中能电气有限公司 | Cut off interlocking structure of circuit breaker looped netowrk cabinet under upper isolation |
| CN113328370A (en) * | 2021-06-04 | 2021-08-31 | 长园电力技术有限公司 | Upper isolation upper grounding environment-friendly gas insulation ring main unit |
| CN214378106U (en) * | 2021-03-05 | 2021-10-08 | 福建中能电气有限公司 | Wall interlocking structure of looped netowrk cabinet |
| WO2021208355A1 (en) * | 2020-04-17 | 2021-10-21 | 亨斯迈(杭州)电力技术有限公司 | Switch cabinet interlock mechanism for preventing five types of accidental operations |
-
2021
- 2021-12-14 CN CN202111526090.4A patent/CN114388281B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376628A (en) * | 2018-04-13 | 2018-08-07 | 浙江恒控电气有限公司 | A kind of multifunction combined vacuum circuit breaker |
| WO2021057521A1 (en) * | 2019-09-29 | 2021-04-01 | 中天电气技术有限公司 | High-reliability and long-service-life gas-insulated switchgear circuit breaker |
| WO2021208355A1 (en) * | 2020-04-17 | 2021-10-21 | 亨斯迈(杭州)电力技术有限公司 | Switch cabinet interlock mechanism for preventing five types of accidental operations |
| CN113078009A (en) * | 2021-03-05 | 2021-07-06 | 福建中能电气有限公司 | Cut off interlocking structure of circuit breaker looped netowrk cabinet under upper isolation |
| CN214378106U (en) * | 2021-03-05 | 2021-10-08 | 福建中能电气有限公司 | Wall interlocking structure of looped netowrk cabinet |
| CN113328370A (en) * | 2021-06-04 | 2021-08-31 | 长园电力技术有限公司 | Upper isolation upper grounding environment-friendly gas insulation ring main unit |
Non-Patent Citations (3)
| Title |
|---|
| 凌斯 ; .新型高效高压开关设备联锁装置的研究与应用.山东工业技术.2013,(第07期),全文. * |
| 张向伍 ; 高峰 ; 杜岩伟 ; 郝怡冰 ; 张丰林 ; .断路器弹簧操动机构拒分拒合故障分析与处理.电世界.2020,(第09期),全文. * |
| 李美增 ; 谢贤林 ; 陆宗达 ; .方家山GIS开关站接地开关的应用分析.科技创新与应用.2020,(第10期),全文. * |
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