An outdoor safety integrated pole-mounted circuit breaker with an internal isolating disconnector

Abstract

An outdoor safety integrated pole-mounted circuit breaker with an isolating disconnector belongs to the technical field of high-voltage switches for power system power supply and distribution. It includes a linkage mechanism, an anti-misoperation isolating knife mechanism, a blade switch mechanism, an aluminum casting housing, an electronic sensor, and an FTU controller. The linkage mechanism, the anti-misoperation isolating knife mechanism, and the blade switch mechanism are arranged inside the aluminum casting housing. The linkage mechanism is connected to the blade switch mechanism through the anti-misoperation isolating knife mechanism. The outgoing line terminal and the incoming line terminal extend from the inner side of the aluminum casting housing to the outside of the aluminum casting housing. The FTU controller is connected to the outgoing line terminal through the electronic sensor. The incoming line terminal is connected to the linkage mechanism. The blade switch mechanism is connected to the outgoing line terminal. The FTU controller and the electronic sensor are integrated inside the aluminum casting housing. The invention has a smaller volume, a simpler structure, saves materials, has high reliability and precision, and can be maintained-free and has simple operation; the isolating knife is inside the housing and has a reliable interlock.

Description

Technical Field

[0001] The invention belongs to the technical field of high-voltage switches for power supply and distribution in power systems, and particularly relates to an outdoor safety type integrated pole-mounted circuit breaker with an internal isolation disconnection port. Background Art

[0002] In recent years, the outdoor vacuum high-voltage switch that emerged has been successfully applied to the power system due to its simple structure, few components, high reliability, high precision and sensitivity, long service life, etc. At present, the structure of the outdoor vacuum high-voltage switch is developing towards diversification, and the disclosure of numerous patented technologies has promoted the continuous improvement of the outdoor vacuum high-voltage switch technology. Although these patented technologies are relatively advanced, they are relatively complex in manufacturing process and assembly, especially in the part of the isolating switch. It has become the main problem of the current products. The large design volume not only wastes raw materials but also is cumbersome and labor-consuming. The live parts are exposed, posing a great safety hazard to the line operation. After being exposed to rain, ultraviolet rays and air corrosion outdoors for a long time, it often gets stuck during operation, and it is easy to cause personal safety accidents to the operators. At present, in China, it is mainly installed separately outside the outdoor high-voltage switch housing and used separately from the outdoor high-voltage switch. This method first requires a large space and is not conducive to miniaturization. Second, once a failure occurs, the isolating knife assembly needs to be replaced, resulting in subsequent matching errors, unreliable opening and interlocking failure, causing insecurity to equipment and personnel. In addition, the accuracy of the existing technology is also unstable, and the situation of inflexible operation often occurs. Summary of the Invention

[0003] In order to solve the above existing problems, the invention provides an outdoor safety type integrated pole-mounted circuit breaker with an internal isolation disconnection port, which includes a linkage mechanism, an anti-misoperation isolating knife mechanism, a blade switch mechanism, an aluminum casting housing, an electronic sensor, and an FTU controller. The linkage mechanism, the anti-misoperation isolating knife mechanism, and the blade switch mechanism are arranged in the aluminum casting housing. The linkage mechanism is connected to the blade switch mechanism through the anti-misoperation isolating knife mechanism. The outgoing line terminal and the incoming line terminal extend from the inner side of the aluminum casting housing to the outside of the aluminum casting housing. The FTU controller is connected to the outgoing line terminal through the electronic sensor. The incoming line terminal is connected to the linkage mechanism. The blade switch mechanism is connected to the outgoing line terminal. The FTU controller and the electronic sensor are integrated inside the aluminum casting housing.

[0004] Further, the linkage mechanism is connected to the anti-misoperation isolating knife mechanism through a direct connection plate. The anti-misoperation isolating knife mechanism is connected to the blade switch mechanism through a main knife connecting rod. The blade switch mechanism is connected to the linkage mechanism through a fixing seat.

[0005] Further, the linkage mechanism includes a mechanism shaft, a mechanism, a mechanism crank arm, a switch crank arm, a solid-sealed pole column, an insulating part, and a switch shaft. A mechanism coil is arranged inside the mechanism. One end of the mechanism shaft passes through the mechanism coil and is movably connected to the mechanism crank arm, and the other end of the mechanism shaft is connected to the anti-maloperation isolating knife mechanism. The mechanism crank arm is connected to the switch crank arm through the switch shaft. The switch crank arm is movably connected to the insulating part. The insulating part is connected to the solid-sealed pole column. The solid-sealed pole column is connected to the incoming line terminal.

[0006] Further, the anti-maloperation isolating knife mechanism includes an isolating knife secondary crank arm, a main connecting rod, an isolating knife main crank arm, an isolating knife operating handle, a locking crank arm, a starting crank arm, and a direct connection plate. The mechanism shaft is movably connected to the starting crank arm through the direct connection plate. The starting crank arm is connected to the locking crank arm. A position hole for cooperation with the locking crank arm to achieve interlocking is arranged on the isolating knife operating handle. The isolating knife operating handle is connected to the main connecting rod through the isolating knife main crank arm. The main connecting rod is flexibly connected to one end of the isolating knife secondary crank arm. The other end of the isolating knife secondary crank arm is flexibly connected to the main knife connecting rod.

[0007] Further, the blade switch mechanism includes an isolating knife, a bent crank arm, a square shaft, and a square shaft crank arm. The main knife connecting rod is movably connected to the bent crank arm. The square shaft crank arm is movably connected to the bent crank arm through the square shaft. The bent crank arm is connected to the isolating knife. The isolating knife is connected to the fixed seat.

[0008] Further, the electronic sensor is an electronic voltage sensor or an electronic current sensor. The model of the electronic voltage sensor is EVT, and the model of the electronic current sensor is ECT.

[0009] Further, the model of the FTU controller is BH-2.

[0010] The beneficial effects of the present invention are as follows: The present invention is smaller in volume, simpler in structure, saves materials, has high reliability and accuracy, and can be maintained-free and has simple operation; the isolating knife is inside the shell and has reliable interlocking; the cast aluminum shell is integrally formed without deformation and water leakage; the switch mechanism and the anti-maloperation isolating knife mechanism are connected by a direct connection plate; the isolating knife break has interlocking in both the closing and opening positions to prevent automatic detachment; all components of the outdoor safety type integrated pillar-mounted circuit breaker with an internal isolating break are inside the switch body; the outdoor safety type integrated pillar-mounted circuit breaker with an internal isolating break has an internal pressure relief function to ensure that the product will not explode;

[0011] This technology solves the serious defects of the original integrated pillar-mounted circuit breaker with an external isolating knife. The isolating knife is built into the cast aluminum shell of the circuit breaker. The circuit breaker changes from the past split type to an integrated installation, saving space, materials, being safe and reliable, effectively ensuring accurate tripping and service life, avoiding the need to replace the entire isolating knife when a single component is damaged in the past. Using this technology can reduce the probability of damaged components, reduce space, increase reliability and operation safety. Description of the Drawings

[0012] Figure 1 This is the structural diagram of the integrated pole-mounted circuit breaker with an outdoor safety type built-in isolating disconnector.

[0013] Among them, the reference numerals are: 1, outgoing line terminal; 2, incoming line terminal; 3, cast aluminum housing; 4, anti-misoperation isolating knife mechanism; 5, main linkage rod; 6, isolating knife secondary crank arm; 7, main connecting rod; 8, isolating knife main crank arm; 9, interlocking crank arm; 10, starting crank arm; 11, straight connecting plate; 12, mechanism shaft; 13, mechanism; 14, mechanism crank arm; 15, switch crank arm; 16, solid-sealed pole column; 17, insulating part; 189, isolating knife; 20, fixed seat; 21, bent crank arm; 22, square shaft; 23, square shaft crank arm; 24, switch shaft; 25, electronic sensor; 26, FTU controller; 27, isolating knife operating handle; 28, mechanism coil; Detailed Description of the Invention

[0014] An integrated pole-mounted circuit breaker with an outdoor safety type built-in isolating disconnector, as Figure 1 shown, includes a linkage mechanism, an anti-misoperation isolating knife mechanism 4, a blade switch mechanism, a cast aluminum housing 3, an electronic sensor 25, and an FTU controller 26. The linkage mechanism, the anti-misoperation isolating knife mechanism 4, and the blade switch mechanism are arranged inside the cast aluminum housing 3 to ensure a good sealing effect and anti-corrosion of the components, achieving reliable operation. The linkage mechanism is connected to the blade switch mechanism through the anti-misoperation isolating knife mechanism 4. The outgoing line terminal 1 and the incoming line terminal 2 extend from the inner side of the cast aluminum housing 3 to the outside of the cast aluminum housing 3. The FTU controller 26 is connected to the outgoing line terminal 1 through the electronic sensor 25. The FTU controller 26 and the electronic sensor 25 are electrically connected. The incoming line terminal 2 is connected to the linkage mechanism. The blade switch mechanism is connected to the outgoing line terminal 1. The FTU controller 26 and the electronic sensor 25 are integrated inside the cast aluminum housing 3, reducing external interference during cable transmission and enabling quick installation.

[0015] Among them, the linkage mechanism is connected to the anti-misoperation isolating knife mechanism 4 through the straight connecting plate 11. The anti-misoperation isolating knife mechanism 4 is connected to the blade switch mechanism through the main knife linkage rod 5. The blade switch mechanism is connected to the linkage mechanism through the fixed seat 20.

[0016] Among them, the linkage mechanism includes a mechanism shaft 12, a mechanism 13, a mechanism crank arm 14, a switch crank arm 15, a sealed pole 16, an insulating part 17, and a switch shaft 24. A mechanism coil 28 is arranged in the mechanism 13. One end of the mechanism shaft 12 passes through the mechanism coil 28 and is connected to the pin shaft of the mechanism crank arm 14. The other end of the mechanism shaft 12 is connected to the anti-misoperation isolation knife mechanism 4. The mechanism crank arm 14 is connected to the switch crank arm 15 through the switch shaft 24. The switch crank arm 15 is connected to the pin shaft of the insulating part 17. The insulating part 17 is connected to the sealed pole 16. The sealed pole 16 is connected to the incoming terminal 2.

[0017] The mechanism crank arm 14 is welded to the switch crank arm 15 and is sleeved on the switch shaft 24. The mechanism crank arm 14 drives the switch crank arm 15 to rotate when it moves.

[0018] The insulating member 17 is connected to the movable conductive rod of the arc extinguishing chamber in the sealed pole 16 through the bolt rod, driving the arc extinguishing chamber to close, the movable end contact of the arc extinguishing chamber to move, and the switch is controlled to close or open;

[0019] The fixing seat 20 is provided with a through hole, which is fastened by bolts to the screw holes in the outlet of the sealed pole 16;

[0020] Among them, the anti-misoperation isolation knife mechanism 4 includes an isolation knife auxiliary crank arm 6, a main connecting rod 7, an isolation knife main crank arm 8, a knife separation operating handle 27, a locking crank arm 9, a starting crank arm 10, and a direct connecting plate 11. The mechanism shaft 12 is pin-connected to the starting crank arm 10 through the direct connecting plate 11. The starting crank arm 10 is connected to the locking crank arm 9. A position hole is provided on the isolation knife operating handle 27 for cooperating with the locking crank arm 9 to achieve locking. The isolation knife operating handle 27 is connected to the main connecting rod 7 through the isolation knife main crank arm 8. The main connecting rod 7 is flexibly connected to one end of the isolation knife auxiliary crank arm 6, and the other end of the isolation knife auxiliary crank arm 6 is pin-connected to the main knife connecting rod 5.

[0021] The main knife connecting rod 5 and the isolation knife auxiliary crank arm 6 are connected through a pin shaft;

[0022] A cylindrical pin is welded on the anti-misoperation isolation knife mechanism 4, and the main connecting rod 7 and the isolation knife auxiliary crank arm 6 are sleeved on the cylindrical pin, and the main connecting rod 7 drives the isolation knife auxiliary crank arm 6 to rotate;

[0023] The main connecting rod 7 is welded on the main crank arm 8 of the isolation knife, and the main crank arm 8 of the isolation knife drives the main connecting rod 7 to rotate;

[0024] The isolation knife main crank arm 8 is welded on the isolation knife operating handle 27, and the isolation knife operating handle 27 drives the isolation knife main crank arm 8 to rotate;

[0025] The interlocking crank arm 9 is welded on the starting crank arm 10 and is sleeved on the garden shaft together;

[0026] It is a pin connection. The starting crank arm 10 is provided with a through hole, and the direct connection plate 11 is provided with a through hole. The starting crank arm 10 and the direct connection plate 11 are connected by a pin;

[0027] The direct connection plate 11 is connected to the mechanism shaft of the mechanism 13; for the working principle of the mechanism 13, please refer to the published patent document with the patent application number: "CN201721030352.7" and the name "A permanent magnet mechanism with a limiting ring".

[0028] The mechanism shaft is the guide rod numbered 9 in the above-mentioned published patent.

[0029] When the mechanism is in the closing state, the mechanism shaft moves in the opposite direction to the circuit breaker tripping direction. Through the direct connection plate, the starting crank arm drives the interlocking crank arm 9 into the corresponding hole of the isolating switch operating handle 27 to complete the interlocking setting to meet the interlocking requirements; there is an interlocking hole on the isolating switch operating handle 27 corresponding to the interlocking crank arm 9. When the switch trips or closes, the starting crank arm 10 and the interlocking crank arm 9 are driven by the direct connection plate 11 to act and get stuck in the corresponding interlocking hole of the operating handle 27 to achieve the interlocking effect.

[0030] Among them, the blade switch mechanism includes an isolating knife 189, a bent crank arm 21, a square shaft 22, and a square shaft crank arm 23. The main knife connecting rod 5 is pin-connected to the bent crank arm 21. The square shaft crank arm 23 is movably connected to the bent crank arm 21 through the square shaft 22. The bent crank arm 21 is flexibly connected to the isolating knife 189, and the isolating knife 189 is movably connected to the fixed seat 20.

[0031] The square shaft crank arm 23 is sleeved on the square shaft 22. The front end of the square shaft crank arm 23 is provided with a through hole, and the bent crank arm 21 is also provided with a through hole. The square shaft crank arm 23 and the bent crank arm 21 are connected by a pin;

[0032] Among them, the electronic sensor 25 is an electronic voltage sensor or an electronic current sensor. The model of the electronic voltage sensor is EVT, and the model of the electronic current sensor is ECT.

[0033] Among them, the model of the FTU controller 26 is BH-2.

[0034] The above interlocking mechanism is in the shell and has reliable interlocking;

[0035] The above cast aluminum shell 3 is formed in one piece without deformation and water leakage;

[0036] The above mechanism 13 is connected to the anti-misoperation isolating knife mechanism by a direct connection plate;

[0037] The above isolating knife contact has interlocking in both the closing and opening positions to prevent automatic detachment;

[0038] All components of the above outdoor safety type integrated pole-mounted circuit breaker with an internal isolating contact are within the switch body;

[0039] The above-mentioned outdoor safety type fused pole-mounted circuit breaker with built-in isolation break has an internal pressure relief function to ensure that the product will not explode;

[0040] The overall description and implementation process of an outdoor safety fusion pole-mounted circuit breaker with built-in isolation break is as follows:

[0041] The outer surface of the cast aluminum housing 3 is exposed to the outgoing terminal 1, and the incoming terminal 2 is inside the housing. The blade switch mechanism main connecting rod 5, the isolating knife auxiliary turning arm 6, the main connecting rod 7, the isolating knife main turning arm 8, the interlocking turning arm 9, the starting turning arm 10, the direct connection plate 11, the mechanism shaft 12, the mechanism 13, the mechanism turning arm 14, the switch turning arm 15, the sealed pole 16, the insulating part 17, the blade opening position 18, the blade closing position 19, the fixing seat 20, the bending turning arm 21, the square shaft 22, the square shaft turning arm 23, the switch shaft 24, the electronic sensor 25, the FTU controller 26, the isolating knife operating handle 27, and the components are all integrated in the cast aluminum housing 3 to ensure the perfect sealing effect and the corrosion protection of the components to achieve reliable operation;

[0042] The mechanism coil 28 in the mechanism 13 drives the mechanism shaft 12 to pull the mechanism crank arm 14, which is connected through the switch shaft 24 to drive the switch crank arm 15, which is linked to the insulating member 17, to push the sealed pole 16 to open and close; 3. The mechanism shaft 12 is connected to the starting crank arm 10 through the direct connection plate 11, which is linked to the interlocking crank arm 9 to achieve synchronous action with the mechanism 13;

[0043] The operating handle 27 drives the isolation knife main crank arm 8 to push the main connecting rod 7 to drive the isolation knife auxiliary crank arm 6 to drive the main knife connecting rod 5 to drive the bending crank arm 21, and drives the square shaft crank arm 23 to link the square shaft 22 to drive the bending crank arm 21 to make the isolation knife close and open position movement reach the blade open position 18 and the blade close position 19. When in the closed position, the blade close position 19 cooperates with the fixed seat 20;

[0044] The operating handle 27 has a position hole for interlocking with the interlocking crank arm 9. When the mechanism 13 is in the closing state, the mechanism shaft 12 moves in the opposite direction of the circuit breaker opening direction, and the starting crank arm 10 drives the interlocking crank arm 9 into the corresponding hole of the operating handle 27 through the direct connection plate 11 to complete the interlocking setting and meet the interlocking requirements.

[0045] The electronic sensor 25 and FTU controller 26 are integrated inside the cast aluminum housing 3 to reduce external interference in cable transmission and facilitate quick installation;

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An outdoor safety integrated pole-mounted circuit breaker with an internal isolating disconnector, characterized in that, It includes a linkage mechanism, an anti-misoperation isolating knife mechanism (4), a blade switch mechanism, an aluminum casting housing (3), an electronic sensor (25), and an FTU controller (26). The linkage mechanism, the anti-misoperation isolating knife mechanism (4), and the blade switch mechanism are arranged inside the aluminum casting housing (3). The linkage mechanism is connected to the blade switch mechanism through the anti-misoperation isolating knife mechanism (4). The outgoing line terminal (1) and the incoming line terminal (2) extend from the inner side of the aluminum casting housing (3) to the outside of the aluminum casting housing (3). The FTU controller (26) is connected to the outgoing line terminal (1) through the electronic sensor (25). The incoming line terminal (2) is connected to the linkage mechanism. The blade switch mechanism is connected to the outgoing line terminal (1). The FTU controller (26) and the electronic sensor (25) are integrated inside the aluminum casting housing (3). The linkage mechanism includes a mechanism shaft (12), a mechanism (13), a mechanism crank arm (14), a switch crank arm (15), a solid-sealed pole column (16), an insulating part (17), and a switch shaft (24). A mechanism coil (28) is arranged inside the mechanism (13). One end of the mechanism shaft (12) passes through the mechanism coil (28) and is movably connected to the mechanism crank arm (14). The other end of the mechanism shaft (12) is connected to the anti-misoperation isolating knife mechanism (4). The mechanism crank arm (14) is connected to the switch crank arm (15) through the switch shaft (24). The switch crank arm (15) is movably connected to the insulating part (17). The insulating part (17) is connected to the solid-sealed pole column (16). The solid-sealed pole column (16) is connected to the incoming line terminal (2). The anti-misoperation isolating knife mechanism (4) includes an isolating knife secondary crank arm (6), a main connecting rod (7), an isolating knife main crank arm (8), an isolating knife operating handle (27), a locking crank arm (9), a starting crank arm (10), and a direct connection plate (11). The mechanism shaft (12) is movably connected to the starting crank arm (10) through the direct connection plate (11). The starting crank arm (10) is connected to the locking crank arm (9). A position hole for cooperation with the locking crank arm (9) to achieve interlocking is arranged on the isolating knife operating handle (27). The isolating knife operating handle (27) is connected to the main connecting rod (7) through the isolating knife main crank arm (8). The main connecting rod (7) is flexibly connected to one end of the isolating knife secondary crank arm (6). The other end of the isolating knife secondary crank arm (6) is flexibly connected to the main knife connecting rod (5).

2. The integrated pole-mounted circuit breaker with an outdoor safety type built-in isolating disconnector according to claim 1, characterized in that, The linkage mechanism is connected to the anti-misoperation isolating knife mechanism (4) through the direct connection plate (11). The anti-misoperation isolating knife mechanism (4) is connected to the blade switch mechanism through the main knife connecting rod (5). The blade switch mechanism is connected to the linkage mechanism through a fixing seat (20).

3. The integrated pole-mounted circuit breaker with an outdoor safety type built-in isolating disconnector according to claim 1, wherein, The blade switch mechanism includes an isolating knife (189), a bent crank arm (21), a square shaft (22), and a square shaft crank arm (23). The main knife connecting rod (5) is movably connected to the bent crank arm (21). The square shaft crank arm (23) is movably connected to the bent crank arm (21) through the square shaft (22). The bent crank arm (21) is connected to the isolating knife (189). The isolating knife (189) is connected to the fixing seat (20).

4. The integrated pole-mounted circuit breaker with an outdoor safety type built-in isolating disconnector according to claim 1, characterized in that, The electronic sensor (25) is an electronic voltage sensor or an electronic current sensor. The model of the electronic voltage sensor is EVT, and the model of the electronic current sensor is ECT.

5. The integrated pole-mounted circuit breaker with an outdoor safety type built-in isolating disconnector according to claim 1, characterized in that, The model of the FTU controller (26) is BH-2.

Images