Environment-friendly gas insulation ring main unit

[0049] Example 1:

[0050] like Figure 1-21 As shown, an environmentally friendly gas insulating ring network cabinet, including cabinet 1, three station switch 2, three station mechanism 3, circuit breaker main circuit 4 and circuit breaker mechanism 5, three station switch 2, three station mechanism 3, the circuit breaker main circuit 4 and the circuit breaker mechanism 5 are mounted in the cabinet body 1, the three-station mechanism 3 and the circuit breaker mechanism 5 are connected to the interlocking device 6 for preventing the charge operation three-station mechanism 3, three stations The switch 2 is connected to the indicator 9 for displaying the three-position state.

[0051] The cabinet 1 includes a gas tank 11, the instrument chamber 12, and the cabinet 13, and the organism chamber 131 and the cable chamber 132 are disposed in the cabinet 13, and the air box 11 is provided in the air box 11, the circuit breaker mechanism 5 and three station mechanism 3 The mounting in the mechanism chamber 11, the three station switch 2 and the circuit breaker main circuit 4 are mounted in the inflatable compartment 111, the circuit breaker mechanism 5 and the circuit breaker main circuit 4, and the three-position switch 2 is connected to the three-station mechanism 3. Implement the separation function of the switch.

[0052] There is a three-phase insulating sleeve 7 above the inflatable compartment 111. The inflatable compartment 111 is sequentially three-phase insulated sleeve 7, three position switch 2 and circuit breaker main circuit 4, three-phase insulating sleeve 7 and three The station switch 2 is connected by the main bus assembly 71, and the three-position switch 2 is coupled to the circuit breaker main circuit 4. The lower portion of the circuit breaker main circuit 4 is connected to the cable chamber 132 through the master line assembly 44, and the air box 11 floor solids has an explosionboard. 112.

[0053] The instrument room is used to install secondary line and secondary original, such as divided buttons, indicators, microcomputer protection devices, current voltmeter, etc., is a gathering place for the second-line terminal of environmentally friendly gas insulation ring network cabinet, which is convenient for secondary check lines. After-sales maintenance; the microcomputer protection device can cause the user to remotely query the integrated state of the switch, and remotely manipulate the switch division; at the same time according to the mating of the transformer and other detection elements, it can intelligently determine the line. Fault, and control the switch for troubleshooting or background feedback.

[0054] like Figure 2-7 As shown, the three-position switch 2 includes a three-station bracket 21, the insulating main shaft 22, and the separation mechanism 23, the insulating main shaft 22 and the separation mechanism 23 are mounted in the three station bracket 21, the insulating main shaft 22 is associated with the partition mechanism 23, The partition mechanism 23 includes a shield ring 232 and a shield 233, a shield ring 232, and a shield 233 for temperature rise control and electric field uniform pressures.

[0055] The three-station bracket 21 is composed of a stent front plate 211, a stent rear plate 212, a first beam 215, a second beam 214, and a fourth beam 215, and the first beam 213, the second beam 214, and the fourth beam 215 horizontally. Founded between the stent front plate 211 and the bracket rear plate 212, the stent front plate 211 and the bracket rear plate 212 are fixed to the air box 11, the insulating main shaft 22 is arranged, and the output terminal of the insulating main shaft 22 is rotated from the bracket rear plate 212. Connecting, the input of the insulating spindle 22 penetrates the stent front plate 211 and is connected to the stent front plate 211.

[0056] The division mechanism 23 includes three-phase insulator 230, three-phase underriding insulator 231 and transmission assembly, three-phase insulator 230 solids in the first beam 213, three-phase insulator 230 fixed with busbar 2301, bus bar row 2301 The three-phase insulating sleeve 7 is fixedly connected, the bus bar row 2301 is fixed to the closing ground contact 2302, and the three-phase lower insulator 231 is fixed in the second beam 214, and the three-phase under insulator 231 is solidified with a transition row 2311, The transitional row 2311 is fixed with an extinguishing chamber contact 2312.

[0057] The transmission assembly also includes a link structure including the transmission arm 2341, the moving knife pull rod 2342, and the moving knife pull plate 2343, the drive turning arm 2341 is fixed to the insulating main shaft 22, and the trip rod 2342 is provided with two groups, and symmetry Set, both ends of the movable rod 2342 are rotatably connected to the drive turning arm 2341 and the moving knife pull plate 2343, and the insulating main shaft 22 is fixed to the nylon pin 2340 on both sides of the transmission arm 2341, which is used to further limit the transmission arm. 2341 Mobile.

[0058] The transmission assembly also includes a separator 235, and the separator 235 is provided with two groups, and the two sets of separator 235 are arranged in parallel and connected by the first knife support 2351 and the second knife support 2356, and the two sets of isolation knife 235 is further secured. A connecting rod 2357 is provided between the first knife support 2351 and the second knife support 2356, the connecting rod 2357 is rotated by the moving knife pull plate 2343, the separator 235 includes a first side 2358 and a second side 2359, two groups The first side 2358 of the separator 235 is opposed to the second side 2359, and the first side 2358 of the separator 235 is fixed to the first contact point 2355 located in the cutter head and the second contact point 2354 located in the knife. The arc chamber contact 2312 is in contact or separated.

[0059] The shield 233 is fixed to the cutter head of the separator 235, specifically, the shield 233 is provided with a stepped shield mounting hole 2331, and the first knife support 2351 penetrates the shield mounting hole 2331, and sets a standard at both ends. The shield 233 is fixed to the first knife support 2351, and the standard member is wrapped inside the shield 233 by the shield mounting hole 2331, and the purpose of the electric field around the shield 235 is connected to the electric field and the descending of the interposed, the present In an embodiment, the shield 233 is fixed to the cutter head of the separator 235, which can increase the heat dissipation area of ​​the separator 235, thereby increasing the temperature rise margin at the closing ground contact 2302 and the isolation knife 235.

[0060] The shield ring 232 is mounted at the knife tail of the separator 235 by the second standard member 2322, and the second standard member 2322 is rotatably connected to the extinguishing chamber contact 2312, and the shield ring 232 is fixedly provided with a shield ring mounting hole 2321, the second standard piece. The 2322 is located within the shield ring mounting hole 2321, and the second standard member 2322 is wrapped inside the shield ring 232 by the shield ring mounting hole 2321, and the present embodiment will shield the electric field in the shield ring 232, and the purpose of the uniform isolation knife 235. The ring 232 is mounted at the tail of the separator 235 to increase the heat dissipation area of ​​the separator 235, thereby increasing the temperature rise margin at the extinguishing chamber contact 2312 and the isolation knife 235.

[0061] The transmission assembly also includes a contact assembly 236, and the contact assembly 236 includes a grounding row 2361 and a ground contact 2362. The ground plane 236 is fixed to the fourth beam 215, and the ground row 2361 is provided with three groups, and the ground contact 2362 is inserted into two sets of isolation knife. Between 235, both sides of the ground contact 2362 are in contact or separated from the first contact point 2355.

[0062] The shield 233, the shield ring 232, and the surface of the isolation knife 235 are rounded, no edge, no angular angular treatment, so that the parts itself ensures the uniform electric field when it is energized, and achieves the purpose of improving the insulation performance of the main circuit.

[0063] During the implementation of the three-position switch 2, the three-station mechanism 3 performs a hierarchy operation, and the insulative main shaft 22 is rotated, and the insulating main shaft 22 drives the transmission assembly transmission assembly to rotate the separator 235 and the grounding row 2361 and remains in the isolation position. At this time, the insulation of the gas box side case was increased.

[0064] The three-position switch 2 can be moved separately into the existing ring cabinet.

[0065] like Figure 8-13 As shown, the three-station mechanism 3 includes a three-station rack 31 and a cam disc 32, and the cam disc 32 is fixed to the insulating main shaft 22, and the three-station frame 31 is mounted on the three-station frame 31 mounting an isolated output device, an isolation transmission, a ground output device. The grounding transmission and the energy storage device, the isolation output device, and the ground output device are associated with the energy storage device and control the energy storage energy, the isolation transmission and the ground transmission and the cam disc 32, respectively, by the cam disc 32 The spindle 22 outputs a partial brake torque and ground torque.

[0066] The three-station rack 31 includes a first mechanism plate 311 and a second mechanism plate 312, and the first mechanism plate 311 is located at the operation input terminal of the three-station mechanism 3, and the second mechanism plate 312 is located at the operation output of the three station mechanism 3. The first mechanism plate 311 and the second mechanism plate 312 are secured by the three-station strut 313, in general, the first mechanism plate 311 and the second mechanism plate 312 are arranged in parallel; the second mechanism plate 312 is passed through the fixing pillar 324 and The partition of the mechanism chamber 131 is secured to attach the three-station mechanism 3 in the mechanism chamber 131.

[0067] The isolation output device includes an isolating output shaft 33 that rotates the input end of the isolation output shaft 33 through the first mechanism plate 311, and the isolation and output shaft 33 on the outside of the first mechanism plate 311 is provided with an isolation cam cover 331.

[0068] The ground output device includes a ground output shaft 34 that rotates through the first mechanism plate 311, and a grounding cam cover 341 is provided on the ground output shaft 34 input terminal on the outside of the first mechanism plate 311.

[0069] The energy storage device includes isolating the energy storage turning arm 351, grounding energy storage arm 352 and the energy storage spring 353, and the isolation energy storage arm 351 is fixed to the isolation output shaft 33, which can rotate with the isolation output shaft 33, isolating the energy storage The free end of the arm 35 is provided with an isolation transmission pin 3511, and the ground storage turning arm 352 is fixed to the ground output shaft 34, which can be rotated as the ground output shaft 34, and the free end of the ground storage turning arm 352 has a ground conveying pin 3521. The two ends of the storage compressor spring 353 are provided with a plunger head 3531, and the compressive spring head 3531 is rotatably connected to the isolation transmission pin 3511 and the ground conveying pin 3521, and the two sets of rings 3531 are provided with energy storage telescopic rod 3532, and the energy is When the compression spring 353 is stretched or expanded, the energy storage telescopic rod 3532 can be stretched or expanded.

[0070] The isolation transmission includes the isolation transmission arm 36, and the isolation transmission arm 36 is rotatably coupled, and the side solids of the isolation transmission arm 36 are solid, the isolation transmission pin 3511 slides along the slot 361, slide The two ends of the groove 361 are inherently provided to limit the isolation limit end of the isolation transmission pin 3511, such as Figure 12As shown, the isolation limit end is set to the first isolation limit end 3611 and the second isolation limit end 3612; the isolation transmission arm 36 is further secured to the isolation transmission rod 362, and the second mechanism plate 312 is fixedly provided with an isolation arc slot. 3121, both ends of the isolation arc 3121 are arranged to be the first isolation arc end portion 31211 and the second isolation arc end portion 31212, the isolation transmission rod 362 is inserted into the isolation arc 3121 and slide along the isolation arc 3121, isolating the drive rod 362 When the cam disc 32 is linked, the three-position switch 2 is hosted by the second isolation arc end portion 31212 to the first isolation arc end portion 31211; three position switch 2 When the isolation transmission rod 362 is slid to the second isolation arc end portion 31212 by the first isolation arc end portion 31211.

[0071] The grounding transmission includes the ground transmission turning arm 37, the ground transmission turning arm 37 is rotatably connected to the ground output shaft 34, and the ground transmission turning arm 37 is secured to the ground slide 371, and the ground conveying pin 3521 slides along the ground slide 371, grounded slide. At both ends of 371, there is a ground limit end for limiting the ground transmission pin 3521, such as Figure 13 As shown, the ground restriction end is set to the first grounding limit end 3711 and the second ground restriction end 3712; the ground transmission rod 37 is further secured to the ground transmission rod 372, and the second mechanism plate 312 is fixed with a grounded arc slot. 3122, both ends of the grounding arc 3122 are disposed as the first grounded arc end portion 31221 and the second grounded arc end portion 31222, the ground transmission lever 372 is inserted into the ground arc 3122 and sliding along the grounded arc 3122, the ground transmission rod 372 When the cam disc 32 is linked, the three-position switch 2 is grounded, and the ground transmission rod 372 is slid from the first grounded arc end portion 31221 to the second grounded arc end portion 31222.

[0072] The cam disc 32 provides a plate-like structure, including the cam disc mounting hole 321, the central axis of the cam disc mounting hole 321 and the insulating main shaft 22, and the insulating main shaft 22 and the cam disc 32 are connected by the connecting shaft 26, specifically, connection One end of the shaft 26 is located in the inflatable compartment 111, which is fixed with a first connecting hole 261, and the cross section of the first connection hole 261 is arranged as a polygon, preferably a hexagonal, compared with the cross section of the insulating main shaft 22, and the insulating main shaft 22 is inserted A joint hole 261 is attached to the connection, preventing the insulating spindle 22 from rotating relative to the connecting shaft 26, the other end of the connecting shaft 26 is located in the mechanism chamber 131, and the outer cross section is arranged to be a polygon, preferably square, and the cam disc mounting hole 321. The cross section is matched, and the other end of the connecting shaft 26 is inserted into the cam disc mounting hole 321 and the connection can prevent the cam disc 32 from being rotated relative to the connecting shaft 26, and the other end of the connecting shaft 26 is fixed with a second connection hole 262; moving seal 25 Set on the outer side of the connecting shaft 26 and seals the three-station bracket 21 and the mechanism chamber 131 partition plate.

[0073] A moving arc slot is also provided on the cam tray 32, and the moving arc slot includes an isolation limit arc 322 and a ground restriction arc 323, the isolation limit arc 322 and the ground restriction arc 323 communicate, the isolation transmission rod 362 is inserted into the isolation limit arc 322 and Slide along the isolation limit arc 322, the ground transmission rod 372 is inserted into the ground restriction arc 323 and slides along the ground restriction arc 323.

[0074] The isolation limit arc 322 is provided to the first isolation limit end 3221 and the second isolation limit end 3222, and both ends of the ground restriction arc 323 are arranged to be first grounded to limit end 3231 and the second ground restriction end. 3232, the second isolation limit end 3222 and the first ground restriction end portion 3231 are located at the interval limit arc 322 and the ground restriction arc 323, and the boundary position is provided with an upward bump portion, and the boss is used to prevent isolation transmission. The rod 362 slides to the ground restriction arc 323 and prevents the ground transmission rod 372 from sliding to the isolation limit arc 322.

[0075] When the three-position switch 2 is in the isolation state, the isolation transmission rod 362 is located at the second isolation arc end portion 31212 and the second isolation limit end 3222, and the ground transmission rod 372 is located at the first ground limit end 3231, three station switch 2. When the closing operation is performed, the isolation transmission arm 36 drives the isolation transmission rod 362 by the second isolation arc end portion 31212 to the first isolation arc end portion 31211, during which the isolation drive rod 362 is in the vertical direction. Moving, the isolation transmission rod 362 is slid from the second isolation limit end 3222 to the first isolation limit end portion 3221, so that the cam disc 32 rotates along the insulative main shaft 22, which outputs the closing torque for the insulating spindle, in which the ground is grounded. The transmission rod 372 slides along the ground restricting the arc 323, the arc of the ground restriction arc 323 is similar to the path to the discharge drive rod 362 drives the cam pan 32, so that the cam disc 32 is closed, does not affect the ground transmission rod 372 The end portion of the ground restriction arc 323 is arranged to limit end 3232, and when the cam disc 32 is in a closed state, the ground transmission rod 372 is moved to the limit terminal 3232.

[0076] When the three-position switch 2 is grounded, the ground transmission ring 37 drives the ground transmission rod 372 to slide from the first grounded arc end portion 31221 to the second grounded arc end portion 31222, the isolation limit of the arc 322 curved and grounded When the drive rod 372 drives the path to rotate, when the cam disc 32 is grounded, the spool disk 36 does not affect the isolation transmission rod 362, and the ground transmission rod 372 drives the cam disc 32 to rotate along the insulating main shaft 22, and outputs ground torque for the insulating main shaft 22. .

[0077] To ensure safety, the operation of the closing or ground is only when the three-position switch 2 is in an isolated state. Figure 9 As shown, the three-position switch 2 is in an isolated state, at which point the isolation transmission pin 3511 is located at the second limit terminal 3612, the three-position switch 2 performs a closed operation, and the external force is driven by the isolation output shaft 33, the isolation output shaft 33 is driven The isolation energy storage turning arm 351 is rotated, and the isolation of the energy storage turning arm 351 drives the isolation transmission pin 3511 to slide along the isolation slot 361, which in turn carries the energy storage case 353 for energy storage, when rotated to the maximum energy storage capacity When the position is removed, the external force is removed, the isolation output device continues to rotate under the inertial action and turn the energy storage case 353 to the maximum energy storage position, release the energy storage and drive the isolation transmission pin 36 to rotate, so isolation transmission The rod 362 is rotated by the cam disc 32, and the closing torque is output to the insulating main shaft 22 through the cam disc 32.

[0078] During the battery compression spring 353 reaches the maximum energy storage position, the isolation transmission pin 3511 slides from the second restriction end 3612 to the first limit end 3611, during which the isolation transmission arm 36 does not rotate. When the energy storage case 353 releases the energy, the isolation transmission pin 3511 drives the isolation transmission arm 36 by the first limit end 3611, and the isolation transmission rod 362 is rotated by the cam disc 32, and the joint is output to the insulating main shaft 22 through the cam disc 32. Torque; three-position switch 2 requires a reverse operation when it is separated, and the housing torque is output to the insulating main shaft 22 through the cam disc 32.

[0079] The three position switch 2 is in an isolated state. At this time, the ground transmission pin 3521 is located at the first ground restriction terminal 3711, and the three-position switch 2 is grounded, and the external force drives the ground output shaft 34 to rotate, the ground output shaft 34 drives the grounding energy storage capacity. The turning arm 352 is rotated, and the ground storage turning arm 352 drives the ground conveying pin 3521 to slide along the ground slide 371, thereby driving the energy storage case 353 to make energy storage, when rotating to the maximum energy storage position of the reservoir compression spring 353, The exterior force is removed, the ground output device continues to rotate under the inertial action and turn the energy storage case 353 to the maximum energy storage position, release the energy storage and drive the ground transmission pin 372 to rotate, drive the ground transmission rod 372 The cam disc 32 rotates, and the ground torque is output to the insulating main shaft 22 through the cam disc 32.

[0080] In the process of reaching the maximum energy storage position, the ground conversion pin 3521 is slid from the first ground restriction end 3711 to the second grounding limit end 3712, during which the ground transmission turning arm 37 When the energy storage case 353 releases the energy storage, the ground transmission pin 3521 is rotated by the second ground restriction end 3712, so that the ground transmission rod 372 rotates by the cam disc 32 to the insulating spindle through the cam disc 32 22 Output ground torque.

[0081] The present embodiment outputs a split lock torque and ground torque, simple structure, easy to operate, easy to operate, easy to operate, and high operation.

[0082] The three-station mechanism 3 also includes a three-station mechanism interlock plate 38, and the three-station mechanism interlock plate 38 is fixedly provided with a lower cover 381, a upper cover 382, ​​and a moving plate 383, via an external force toggle 383 Controlling the three-station mechanism interlock plate 38 moves or moves down, and the upper cover 382 covers the isolation cam sleeve 331, and the three-position mechanism interlock plate 38 is moved downward. The lower cover 381 covers the ground cam sleeve 341 to ensure that the isolation output shaft 33 and the ground output shaft 34 do not operate at the same time.

[0083] The three station mechanism 3 also includes an interlocking device for isolating the output device and the ground output device.

[0084] The interlocking device includes a hose plate 391, and the hooking plate 391 is solid to adjust the waist hole 392, and the first mechanism plate 311 is fixed to the interlocking post 3111, and the interlocking post 3111 is inserted into the adjustment waist hole 392, thereby The 391 is hung at the first mechanism plate 311, and the two ends of the hanging plate 391 are respectively provided with an isolated interlocking hole 394 for locking the isolation output shaft 33 and a grounding interlocking hole 395 for locking the ground output shaft 34, isolating interlocking holes. 394 and ground interlocking holes 395 are provided with a gap, the isolation output shaft 33, and the ground output shaft 34 respectively have a slit associated with the notch of the isolation interlocking hole 394 and the ground interrupt hole 395, and the present embodiment is interlocking When the three position switch 2 is in an isolated state, the cutout of the isolation output shaft 33 and the ground output shaft 34 is opposed to the notch of the isolation interlocking hole 394 and the ground interlocking hole 395, at this time, the hanging plate 391 and the isolation output device and the ground The output device is in a unlocked state, and the hanging plate 391 can move up and down within the defined range of the waist hole 392, realize the closing or grounding operation of the three-position switch, when the three-position switch is in the closed state, the isolation output shaft 33 The arc surface is opposed to the gap of the isolation interlocking hole 394, the slit of the ground output shaft 34 is opposite and restricted, and the ground output shaft 34 cannot operate, when the ground output device is in a grounded state At the time, the arc surface of the ground output shaft 34 is contrary to the gap of the ground interlocking hole 395, the slit of the isolation output shaft 33 is relatively and limited, thereby achieving only only in the isolation output device and ground output. When the device is in an isolated state, the operation of the three-position switch grounding or the closing can be performed.

[0085] The three-station mechanism 3 can be applied to the existing ring cabinet alone.

[0086] like Figure 14 As shown, the instruction device 9 is used to display the state of the three station switch 2, and the indication device 9 includes an indication of the main shaft 91, indicating the main shaft 91, and the insulating main shaft 22 of the three station switch 2, indicating the sign 92 and the indicator spindle. 91 is connected to display the state of the three station switch 2.

[0087] Also included, the connection device is configured to connect the indicator device 9 and the insulating main shaft 22, and the connection means includes a connecting shaft 26, and one end of the connecting shaft 26 is fixed with a second connection hole 262, indicating that the main shaft 91 is inserted into the second connecting hole 262 and fixed connection. The other end of the connecting shaft 26 is fixed with a first connection hole 261, and the insulating main shaft 22 is inserted into the first connection hole 261 and the connection is secured.

[0088] The connecting shaft 26 sets the seal seal 25, and seals the connecting shaft 26 with the three-station bracket 21 and the mechanism chamber 131 separator.

[0089]The instruction device 9 of the present embodiment is connected to the insulating main shaft 22, and the state of the three station switch 2 is output directly through the insulating main shaft 22, and is displayed by the indicator 92, abandon the intermediate transmission member, and improves three-position switch 2. The indication efficiency of the state.

[0090] The indicator device 9 can be applied separately into an existing ring cabinet.

[0091] like Figure 15-18 As shown, the circuit breaker main circuit 4 includes a circuit breaker main circuit holder 41, and the circuit breaker main circuit holder 41 is mounted with an extinguishing chamber assembly 42 and a main circuit power assembly 43, and the arc interruption chamber assembly 42 includes an arc-shaped shock 8. Arc-extinguishing contact 8 includes an integrated arc clip column 81 and an arc-shaped member 43 including a bracket shielding ring 434, an arc shower 8 and a bracket shield ring 434 for uniform Peripheral electric field.

[0092] The circuit breaker main circuit rack 41 includes two sets of circuit breaker main circuit branch plate 411, in general, the two sets of circuit breaker main circuit board 411 parallel, the two sets of circuit breaker main circuit support plate 411 is fixed with an arc extinguishing chamber The support plate 412 and the epoxy support plate 413, the extinguishing chamber support plate 412 and the epoxy support plate 413, respectively, three sets, three sets of extinguishing chamber support plates 412 and epoxy support plate 413 horizontal distribution, extinguishing chamber support plate The 412 is located above the epoxy support plate 413, and the two sets of circuit breaker main circuit support plate 411 are fixedly provided with a shaft mounting plate 414; an extinguishing chamber assembly 42 includes a vacuum foam 421 and an arc-shaped shock 8, an arc-shaped shock 8 The vacuum foam 421 is fixedly connected, and the arcing contact 8 is fixed to the extinguishing member 415, and the epoxy support plate 413 is connected to the vacuum foam 421 for supporting the vacuum bubble 421.

[0093] The arcing contact 8 includes an arc hanging-column member 81 and an arc-shaped member 82, and the arc closing member 81 is vertically mounted on one side of the arc-contact member 82, and the arc contact column 81 In integrated design with the arc contact surface 82, eliminate local discharging hidden dangers brought by assembly, the extinguishing member 8 structure replaces the existing copper row bend, through a symmetrical design, to ensure the installation of the isolation knife 235 At the same horizontal plane with the vacuum foam 421, it is reasonable to ensure the rationality of the phase (longitudinal direction) insulating net distribution of the circuit breaker main circuit 4, and the other side of the arc closing surface member 82 is induced with an arc contact hole. 83. The arc extinguishing hole 83 is opposed to the support plate mounting hole on the extinguishing chamber support plate 412, and the first fixing member 415 is inserted into an arc-contact hole 83 and a support plate mounting hole and realizes an arc-shaped 8 and an arc. The fixed connection of the chamber support plate 412.

[0094] In the present embodiment, the arc extinguishing member 81 is a column structure, an arc extinguishing plate 84 of the upper end of the arc-contact column member 81, and the thickness of the arc extinguishing plate 84 is smaller than the arc-contact column 81. The diameter, the arc extinguishing member 81 is provided with a sloping 845 with the junction of the arc extinguishing plate 84, and a smooth connection is achieved by the inclined surface 845, and the arcing contact column 81 and the arc extinguishing plate 84 are integrated design, eliminate assembly Local discharge hidden dangers, the arc extinguishing plate 84 is solidified with a concave groove 841, and the arc extinguishing plate 84 is connected to the separator 235, and the groove 841 is matched with the second contact point 2354 of the isolation knife 235, the second contact point 2354 Insert into the groove 841, it is convenient to mount the positioning, and the relative rotation of the isolation knife 235 and the arc contact 8.

[0095] The main circuit power assembly 43 includes an insulating spindle 431, and the insulating main shaft 431 is rotated and provided having a three sets of pressing bracket 433, and a set of bracket shielding rings 434 outside, the bracket shielding ring 434 and the holding bracket 433 It is connected, and the other set of circuit breaker main circuit branch plate 411 is provided with a master row 437, and the carrier 437 is fixed to the holding bracket 433, and the carrier portion 437 is fixed to the master line assembly 44, the bracket shielding ring 434 Founded with a stepped shielding ring mounting hole 4341, the circuit breaker main circuit branch plate 411 and the holding bracket 433 are firmly provided with a first mounting hole corresponding to the shielding ring mounting hole 4341, and the second fixture is sequentially inserted into the shield. The loop mounting hole 4341 and the first mounting hole, and the bracket shielding ring 434, the circuit breaker main circuit branch plate 411 and the holding bracket 433 and the fixed connection, pass the shielding ring mounting hole 4341 to block the second fixture in the bracket shielding ring 434 Internal, uniform electric field around the second fixture, thereby ensuring the insulation requirements of the second fixture to the air box 11 side shell.

[0096] The insulating spindle 431 is rotated, and the two sets of pressing cams 432 are provided, and the two sets of pressing cams 432 correspond to a set of pressing brackets 433, in the present embodiment, the two sets of pressing cams 432 are located on both sides of the holding bracket 433, respectively. The pressure cam 432 is firmly provided with a curved groove 4321.

[0097] The vacuum foam 421 is set to have a double-head screw 439, and the double-headed screw 439 is provided with opposite threads, that is, one end is set to the right-thread, and the other end is set to the left-handed thread, thereby achieving the adjustment of the vacuum bubble 421 open distance, overrout function, When the two ends are commonly threaded, the short-distance can only be adjusted, and only the overrouting problem can only be adjusted. In this embodiment, the double-headed screw 439 uses a fine teeth thread to solve the problem of the rough teeth impossible to accurately adjust the assembly, because The fine teeth thread has better self-locking performance, which improves the mechanical stability of the circuit breaker main circuit 4, and the double-headed screw 439 is secured with a soft connection 438, and the soft connection 438 is secured to the front connection 437.

[0098] The double-headed screw 439 helically has a vacuum switch tie rod 435, the lower end of the vacuum switch tie rod 435 is provided with a holding cap sleeve, and the holding cap sleeve is provided with a pulley that is slidably connected to the curved groove 4321, the vacuum switch lever 435 and the holding cap socket A holding spring 436 is provided.

[0099] During the implementation of the circuit breaker main circuit 4, the circuit breaker mechanism 5 performs a closing or fractal operation to drive the insulating spindle 431 to rotate, the insulating spindle 431 rotates the drive double-head screw 439 to move up and down, and then control the circuit breaker main circuit 4 in the closing or division Gate state.

[0100] The bracket shielding ring 434, the master row 437 and the arc shift 8 surface make rounded corners, no edge, no angular angle, so that the parts itself ensures the uniform electric field when it is energized, and reaches the main circuit of the circuit breaker main circuit 4 insulating performance. Purpose.

[0101] The circuit breaker main circuit 4 can be moved separately into an existing ring cabinet.

[0102] like Figure 19-21 As shown, the interlocking device 6 includes a circuit breaker interlock plate 61 and a three-station interlock plate 62, a three-station interlock plate 62 and a three-station mechanism 3, and the circuit breaker mechanism 5 controls the circuit breaker by a buckle device. The lock plate 61 restricts the movement of the three-station interlock plate 62.

[0103] The interlocking device 6 is fixedly coupled to the circuit breaker mechanism 5 or / and the three-station mechanism 3 by the interlocking fixing plate 63. The circuit breaker rack of the circuit breaker mechanism 5 is fixedly provided with a slider 613, and the slider 613 is located within the second interlocking hole 612 and slides along the second interlocking hole 612, and the circuit breaker mechanism 5 includes a storage operating handle 52. The energy storage operating handle 52 passes through the first interlocking hole 611.

[0104] The three-station interlock plate 62 is rotated to the interlocking fixing plate 63, and the two ends of the three-station interlock plate 62 are fixed with a latching lumbar hole 621, and the circuit breaker interlock plate 61 and three position interlock plate 62 And the three-station interlocking plate 62 and the three-station mechanism interlock plate 38 rotate the connection by fastening the rotating member.

[0105] The interlocking device 6 also includes a latchback reply mechanism 64 including a first locking rod 641, a second locking rod 642, a third locking rod 643, and a reply spring 644, a first locking rod 641 and The second locking rod 642 is fixed to the interlocking fixing plate 63, the third locking rod 643 is fixed to the circuit breaker interlock plate 61, and the recovery spring 644 is set in the first locking rod 641, and the spring 644 is returned. The spring output terminal 645 is located on both sides of the second locking rod 642 and the third locking rod 643, and when the three-position mechanism interlock plate 38 is moved down, the third locking rod 643 drives the spring output terminal 645 on the upper side. Moving, the second locking rod 642 is used to limit the spring output terminal 645 located on the lower side, and when the three-station mechanism interlock plate 38 is moved, the third locking rod 643 drives the spring output end 645 at the lower side. The second locking rod 642 is configured to restrict the spring output 645 located on the upper side, and after the corresponding operation is completed, the circuit breaker interlock plate 61 is controlled back to the initial state.

[0106] The snap device includes a first plate 651 and a second fastener 652, a first plate 651 and a second fastener 652 fixed to the circuit breaker interlock plate 61, and the first fastening plate 651 is located at the second plate 652. Abipated, the circuit breaker mechanism 5 includes a circuit breaker indicating that the circuit breaker indicates that the circuit breaker operates, and the state of the circuit breaker main circuit 4 is displayed, and the circuit breaker indicating that the circuit breaker indicates the main shaft 51 and the circuit breaker indicator plate 53. Indicates that the main shaft 51 is associated with the circuit breaker operating component, and the state control circuit breaker indicates the direction of rotation of the spindle 51, and thereby displays different circuit breaker main circuit 4 different through the rotation direction of the circuit breaker indicator plate 53.

[0107] The circuit breaker indicates that the main shaft 51 is provided with a snap-in-plate 511. When the circuit breaker main circuit 4 is in the closed state, the circuit breaker indicates that the main shaft 51 rotates to engage the circuit breaker indicate the main shaft 51 into the first plate 651 and the second buckle 652. In the room, the circuit breaker interlock plate 61 is locked, and the three-station lock plate 62 cannot be moved through the three-station lock plate 62, and the isolation output shaft 33 and the ground output shaft 34 are in the station mechanism interlock plate. 38 Covering the state; after the circuit breaker main circuit 4 is separated, the circuit breaker indicates that the main shaft 51 rotates to disengage the snap-in-plate slit 511 from the interference state of the first plate 651 and the second plate 652, and the circuit breaker interlocking plate 61 Unlock, at this time, the three-station mechanism interlock plate 38 is operated down, and the three-station mechanism 3 is operated, thereby achieving the purpose of the three-station mechanism 3 when the circuit breaker main circuit 3 is closed. Ensure the security of the operation.

[0108] The interlocking device 6 can be applied to the existing ring cabinet separately.