Outdoor modularized vacuum circuit breaker for electrified railway

Abstract

The utility model discloses an outdoor modularized vacuum circuit breaker for an electrified railway, which comprises a box body, a transmission module, a monitoring and control unit, an insulating module, an insulating pull rod and a solid-sealed polar pole, wherein the transmission module and the monitoring and control unit are arranged in the box body; the insulating module is arranged at the top of the box body; the monitoring unit is used for monitoring the running state of each component in real time; the transmission module comprises a transmission assembly and an opening assembly and a closing assembly which are respectively connected with the transmission assembly, the transmission assembly drives the opening assembly to execute opening operation and drives the closing assembly to execute closing operation, and the main control board of the monitoring and control unit is in communication connection with a driving part of the transmission assembly. The device is reliable in structure, adopts modular design, can be quickly disassembled, assembled and maintained, reduces the operation and maintenance cost, is high in reliability, and adapts to outdoor severe environments and frequent operation; moreover, the circuit breaker is good in vibration resistance and sealing performance, guarantees long-term stable operation, integrates monitoring and remote control, and remarkably improves the equipment performance and the operation and maintenance efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to a circuit breaker technical field, concretely relates to an electrified railway outdoor modularized vacuum circuit breaker. BACKGROUND

[0002] The electrified railway traction power supply system needs to frequently bear high voltage and large current impact, and is exposed to outdoor harsh environment (such as rain, snow, dust, vibration, etc.) for a long time. The traditional outdoor vacuum circuit breaker mainly has the following defects:

[0003] Complex structure: non-modular design leads to difficult maintenance, and the whole needs to be replaced when failure, which is high in cost and long in power-off time;

[0004] Poor environmental adaptability: insufficient sealing leads to reduced insulation performance, is easily corroded by moisture and salt mist, and affects service life;

[0005] Weak anti-vibration ability: mechanical vibration caused by train operation easily causes internal components to loosen or have poor contact;

[0006] Low intelligent level: lack of real-time monitoring and remote control functions, and low fault positioning efficiency. INVENTION CONTENT

[0007] The utility model aims at providing an electrified railway outdoor modularized vacuum circuit breaker to solve the problems of complex structure, poor environmental adaptability, weak anti-vibration ability and low intelligent level of the existing outdoor vacuum circuit breaker.

[0008] The utility model solves the above technical problems by the following technical scheme: an electrified railway outdoor modularized vacuum circuit breaker, comprising a box body, a transmission module and a monitoring and control unit arranged inside the box body, an insulation module arranged at the top of the box body, and an insulation pull rod and a solid-sealed pole arranged in the box body and connected with the transmission module, the monitoring unit is used for real-time monitoring of the running state of each component;

[0009] The transmission module comprises a transmission assembly, a disconnecting assembly and a closing assembly connected with the transmission assembly, the transmission assembly drives the disconnecting assembly to perform the disconnecting operation, and drives the closing assembly to perform the closing operation, and the main control board of the monitoring and control unit is in communication connection with the driving part of the transmission assembly.

[0010] Further, the transmission assembly comprises a driving part, a gear reduction box, an output shaft, a motor gear sub-module, a main rotating shaft, a first four-bar linkage mechanism, a second four-bar linkage mechanism, a movable conducting rod, an energy storage shaft, an energy storage spring, a large gear and a cam;

[0011] The output shaft is connected with one end of the driving member, the motor gear module is connected with the other end of the driving member, the large gear is connected with the output shaft, the cam is connected with one end of the energy storage shaft, the other end of the energy storage shaft is connected with the large gear, one end of the energy storage spring is arranged at the bottom of the gear reduction box, the other end of the energy storage spring is connected with the energy storage shaft, one end of the insulating pull rod is connected with the first four-bar linkage mechanism and one end of the movable conducting rod respectively, the other end of the movable conducting rod is connected with the fixed sealing pole, the other end of the first four-bar linkage mechanism is connected with the main rotating shaft, one end of the second four-bar linkage mechanism is connected with the first four-bar linkage mechanism, and the other end of the second four-bar linkage mechanism is connected with the contact pressure spring of the closing assembly.

[0012] Further, the closing assembly comprises a closing coil, a closing spring, a first connecting rod, a second connecting rod, an auxiliary switch, a travel switch, a first iron core, a first tripping plate, a closing spring, a first crank arm, a cam positioning piece and a closing module.

[0013] The closing coil is arranged outside the gear reduction box, the first iron core is arranged inside the closing coil, the closing coil is arranged opposite to the first tripping plate, the first tripping plate is fixedly connected with one end of the closing spring and the cam positioning piece respectively, the cam positioning piece is arranged in the middle of the gear reduction box, the cam positioning piece is connected with the cam, one end of the first crank arm is connected with the other end of the closing spring, the other end of the first crank arm is connected with the box body, the first connecting rod and the second connecting rod are connected with the main rotating shaft respectively, the other end of the first connecting rod is connected with the travel switch, the travel switch is connected with the gear reduction box, the other end of the second connecting rod is connected with the other end of the auxiliary switch, and the closing spring is connected with the motor gear module.

[0014] Further, the opening assembly comprises an opening coil, a second iron core, a second tripping plate, an opening spring, an opening module, an opening coil, a second iron core, a second tripping plate, an opening spring, a contact pressure spring.

[0015] The opening coil is arranged opposite to the second tripping plate, the second iron core is arranged inside the opening coil, one end of the second tripping plate is connected with the opening spring, the other end of the second tripping plate is connected with the cam, the second crank arm is connected with the energy storage shaft, one end of the opening module and one end of the opening spring are connected with the main rotating shaft respectively, the other end of the opening module is fixedly connected with the box body, the other end of the opening spring is fixedly connected with the box body, and the other end of the contact pressure spring is connected with one end of the second four-bar linkage mechanism.

[0016] Further, the monitoring and control unit comprises a control board and a displacement sensor, a temperature sensor, a current monitoring sensor, a voltage monitoring sensor and a mechanical characteristic monitoring IED which are connected with the control board in communication, the displacement sensor is arranged in the box body, the control board and the mechanical characteristic monitoring IED are arranged on the box body, and the temperature sensor, the current monitoring sensor and the voltage monitoring sensor are connected with the fixed sealing pole respectively.

[0017] Further, the driving member is an electric motor.

[0018] Further, the outer creepage distance of the solid-sealed pole is 1500-1600mm.

[0019] The utility model has the following beneficial effects: the utility model provides an outdoor modularized vacuum circuit breaker of electrified railway, which has reliable structure, can be quickly disassembled and maintained, reduces operation and maintenance cost, has high reliability, is suitable for outdoor severe environment and frequent operation, has good anti-vibration and sealing performance, ensures long-term stable operation, in addition, the circuit breaker integrates monitoring and remote control, significantly improves equipment performance, operation and maintenance efficiency and system reliability. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a novel structure schematic diagram of the utility model;

[0021] Figure 2 It is an internal structure schematic diagram of the utility model Figure One ;

[0022] Figure 3 It is an internal structure schematic diagram of the utility model Figure Two ;

[0023] Figure 4 It is an internal structure schematic diagram of the utility model Figure Three ;

[0024] Figures 1 to 4 The reference signs shown in the figure respectively represent: 1 - box body, 2 - transmission module, 3 - insulation module, 4 - solid-sealed pole, 5 - insulation pull rod, 6 - main rotating shaft, 7 - opening sub-module, 8 - closing module, 9 - motor gear sub-module, 10 - contact pressure spring, 1101 - first four-bar linkage mechanism, 1102 - second four-bar linkage mechanism, 12 - closing coil, 1301 - first iron core, 1302 - second iron core, 1401 - first trip plate, 1402 - second trip plate, 15 - cam positioning member, 16 - large gear, 17 - cam, 18 - movable conducting rod, 19 - gear reduction box, 20 - energy storage shaft, 21 - output shaft, 22 - first crank arm, 23 - opening coil, 24 - driving member, 25 - energy storage spring, 26 - travel switch, 27 - opening spring, 28 - first connecting rod, 29 - closing spring, 30 - second crank arm, 31 - opening spring, 32 - second connecting rod, 33 - auxiliary switch. DETAILED DESCRIPTION

[0025] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used to explain the utility model and not used to limit the scope of the utility model.

[0026] As Figures 1 to 4As shown, an outdoor modular vacuum circuit breaker for electrified railway includes a box 1, a transmission module 2 and a monitoring and control unit arranged inside the box 1, an insulation module 3 arranged at the top of the box 1, and an insulation pull rod 5 and a solid sealed pole 4 connected with the transmission module 2 respectively. The monitoring unit is used to monitor the operating state of each component in real time. The box 1 is used to accommodate the transmission module 2 and the monitoring and control unit, and provides protection and support. The box 1 is made of high-strength material, has waterproof, dustproof and corrosion-resistant properties, and is suitable for outdoor environments. The insulation module 3 is used to provide electrical insulation. The insulation module 3 is made of high-performance insulation material to ensure the safe operation of the equipment in a high-voltage environment. The insulation pull rod 5 is connected with the transmission module 2 and is used to transmit mechanical power. The solid sealed pole 4 is connected with the transmission module 2 and is used to realize the opening and closing of the circuit. The outer creepage distance of the solid sealed pole 4 is 1500mm-1600mm. By pouring the solid sealed pole as a whole in a specially designed solid insulation material, the setting of the outer creepage distance and the air gap electrical clearance increases the insulation strength of the vacuum arc chamber under the condition of unchanged volume.

[0027] The transmission module 2 includes a transmission assembly, and a split assembly and a closing assembly connected with the transmission assembly respectively. The transmission assembly drives the split assembly to perform the split operation, and drives the closing assembly to perform the closing operation. The main control board of the monitoring and control unit is in communication connection with the driving part 24 of the transmission assembly.

[0028] Specifically, the transmission assembly includes a driving part 24, a gear reduction box 19, an output shaft 21, a motor gear sub-module 9, a main rotating shaft 6, a first four-bar linkage mechanism 1101, a second four-bar linkage mechanism 1102, a movable conducting rod 18, an energy storage shaft 20, an energy storage spring 25, a large gear 16, and a cam 17. The output shaft 21 is connected at one end of the driving part 24, the motor gear sub-module 9 is connected at the other end of the driving part 24, the large gear 16 is connected on the output shaft 21, the cam 17 is connected with one end of the energy storage shaft 20, and the other end of the energy storage shaft 20 is connected with the large gear 16. One end of the energy storage spring 25 is arranged at the bottom of the gear reduction box 19, and the other end is connected with the energy storage shaft 20. One end of the insulation pull rod 5 is connected with one end of the first four-bar linkage mechanism 1101 and one end of the movable conducting rod 18 respectively. The other end of the movable conducting rod 18 is connected with the solid sealed pole 4. The other end of the first four-bar linkage mechanism 1101 is connected with the main rotating shaft 6. One end of the second four-bar linkage mechanism 1102 is connected on the first four-bar linkage mechanism 1101, and the other end is connected on the contact pressure spring 10 of the closing assembly. The driving part 24 is a motor.

[0029] The main rotating shaft 6 is the core component of the transmission module 2. The main rotating shaft 6 drives the movable contact 18 through the four-bar linkage mechanism in the opening and closing operations, and is connected with the opening sub-module 7, the first four-bar linkage mechanism 1101, the second four-bar linkage mechanism 1102, the opening spring 31, the first connecting rod 28 and the second connecting rod 32. In the opening and closing operations, the first four-bar linkage mechanism 1101 drives the movable contact 18 through the movement of the main rotating shaft 6. In the opening operation, the movable contact 18 is separated from the fixed sealed pole 4; in the closing operation, the movable contact 18 is in contact with the fixed sealed pole 4. In the opening operation, the energy storage shaft 20 rotates reversely to release the energy of the energy storage spring 25; in the closing operation, the energy storage shaft 20 rotates forwardly to store energy. In the opening operation, the energy storage spring 25 releases energy, and in the closing operation, the energy storage spring 25 stores energy. In the opening and closing operations, the large gear 16 transmits power through the rotation of the energy storage shaft 20. In the opening and closing operations, the output shaft 21 drives the motor gear sub-module 9 through the rotation of the large gear 16. In the opening and closing operations, the motor gear sub-module 9 drives the opening sub-module 7 or the closing module 8 through the rotation of the output shaft 21. In the opening and closing operations, the cam 17 rotates through the release of the release plate to drive the energy storage shaft 20.

[0030] The closing assembly includes the closing coil 12, the closing spring 8, the first connecting rod 28, the second connecting rod 32, the auxiliary switch 33, the travel switch 26, the first iron core 1301, the first release plate 1401, the closing spring 29, the first crank arm 22, the cam 17 positioning piece 15; the closing coil 12 is arranged outside the gear reduction box 19, the first iron core 1301 is arranged inside the closing coil 12, the closing coil 12 is arranged opposite to the first release plate 1401, the first release plate 1401 is fixedly connected with one end of the closing spring 29 and the cam 17 positioning piece 15, the cam 17 positioning piece 15 is arranged in the middle part of the gear reduction box 19, the cam 17 positioning piece 15 is connected with the cam 17, one end of the first crank arm 22 is connected with the other end of the closing spring 29, one end of the first crank arm 22 is connected with the other end of the first connecting rod 28, the other end of the first connecting rod 28 is connected with the travel switch 26, and the travel switch 26 is connected with the gear reduction box 19, the other end of the second connecting rod 32 is connected with the other end of the auxiliary switch 33, the closing spring 8 is connected with the motor gear module.

[0031] The closing coil 12 and the first iron core 1301 provide electromagnetic driving force to trigger the closing operation. The closing reed 29 and the first crank 22 convert the electromagnetic driving force into mechanical movement to drive the cam 17 positioning piece 15 and the cam 17. The energy storage shaft 20 and the energy storage spring 25 store and release energy to power the closing operation. The main rotating shaft 6 and the four-bar linkage mechanism convert the rotary motion into linear motion to push the movable contact 18. The travel switch 26 and the auxiliary switch 33: real-time monitor the status of the closing operation, ensure the operation is completed accurately. When the closing coil 12 is energized, a magnetic force is generated to push the first iron core 1301 and the first trip plate 1401, releasing the closing reed 29. After the closing reed 29 is released, it drives the first crank 22 and the cam 17 positioning piece 15 to drive the cam 17 and the energy storage shaft 20 to rotate, and the energy storage spring 25 stores energy, and finally through the four-bar linkage mechanism to push the movable contact 18 to complete the closing operation. The travel switch 26 and the auxiliary switch 33 real-time monitor the status of the closing operation, and feedback the signal to the monitoring and control unit.

[0032] The opening assembly includes an opening coil 23, a second iron core 1302, a second trip plate 1402, an opening reed 27, an opening sub-module 7, an opening spring 31, and a contact pressure spring 10. The opening coil 23 is arranged opposite to the second trip plate 1402, the second iron core 1302 is arranged inside the opening coil 23, one end of the second trip plate 1402 is connected with the opening reed 27, the other end of the second trip plate 1402 is connected with the cam 17, the second crank 30 is connected with the energy storage shaft 20, one end of the opening sub-module 7 and one end of the opening spring 31 are respectively connected with the main rotating shaft 6, the other end of the opening sub-module 7 is fixedly connected with the box body 1, the other end of the opening spring 31 is fixedly connected with the box body 1, and the other end of the contact pressure spring 10 is respectively connected with one end of the second four-bar linkage mechanism 1102.

[0033] Specifically, the opening coil 23 is energized to generate a magnetic force to push the second iron core 1302. The second iron core 1302 is arranged inside the opening coil 23 and pushes the second trip plate 1402 after being energized. The second trip plate 1402 is arranged opposite to the opening coil 23 and pushes the opening reed 27. The opening reed 27 is connected with the second trip plate 1402 and the cam 17 and triggers the opening operation after being released. The opening sub-module 7 is connected with the main rotating shaft 6 and the box body 1 to transmit power and perform the opening operation. The opening spring 31 is connected with the main rotating shaft 6 and the box body 1 to provide auxiliary power for the opening operation. The contact pressure spring 10 is connected with the second four-bar linkage mechanism 1102 to ensure the stable contact pressure. The second crank 30 is connected with the energy storage shaft 20 to transmit power. The cam 17 is connected with the opening reed 27 and the energy storage shaft 20 to drive the energy storage shaft 20 to rotate.

[0034] In use, the main control board of the monitoring and control unit sends a tripping instruction, and the tripping coil 23 is energized. The tripping coil 23 generates a magnetic force to push the second iron core 1302 inside. The second iron core 1302 pushes the second trip plate 1402 to separate it from the tripping yoke 27, and the tripping yoke 27 is released. After the tripping yoke 27 is released, the cam 17 is rotated. The cam 17 is connected with the energy storage shaft 20 to drive the energy storage shaft 20 to rotate reversely, and the energy storage shaft 20 rotates reversely and the energy storage spring 25 releases energy, and the release of the energy storage spring 25 provides power for the tripping operation. The rotation of the energy storage shaft 20 drives the large gear 16 to rotate, and the large gear 16 is connected with the output shaft 21, and the output shaft 21 starts to rotate. The output shaft 21 drives the motor gear module 9 through the large gear 16.

[0035] The motor gear module 9 is connected with the tripping sub-module 7 to drive the tripping operation. The motor gear module 9 drives the first four-bar linkage mechanism 1101 through the main rotating shaft 6, the first four-bar linkage mechanism 1101 pulls the movable conducting rod 18, and the tripping operation is completed.

[0036] The monitoring and control unit comprises a control board and a displacement sensor, a temperature sensor, a current monitoring sensor, a voltage monitoring sensor and a mechanical characteristic monitoring IED which are respectively connected in communication with the control board. The displacement sensor is arranged in the box body 1, and the control board and the mechanical characteristic monitoring IED are arranged on the box body 1. The temperature sensor, the current monitoring sensor and the voltage monitoring sensor are respectively connected to the solid sealed pole 4. The built-in sensors monitor the operating state of the circuit breaker in real time, capture small abnormal signals, and transmit the signals to the control board in real time. The control board analyzes historical data and real-time parameters to identify hidden dangers such as contact wear, insulation deterioration and mechanical fatigue in advance, realizes preventive maintenance, avoids sudden failures, supports remote tripping and parameter adjustment, and reduces manual field operation. Preferably, the control board adopts an STM32 single-chip microcomputer. In addition, the control board can be connected with a terminal device to realize remote monitoring, interconnect with a SCADA system through the Internet of Things, realize cooperative control of circuit breakers, transformers and relay protection devices, and improve the overall stability of the power grid. The control board can monitor risks such as electric leakage, overtemperature and arc discharge in real time, and automatically trigger protection actions such as emergency tripping and alarm to reduce the risk of fire and electric shock.

[0037] In the utility model, the following stages are included:

[0038] When in the energy storage process: the motor is started after energization, and the movement is transmitted to the output shaft 21 through the gear module deceleration, and the energy storage shaft 20 is driven to rotate through the large gear 16 outside the gear reduction box 19 to stretch the energy storage spring 25 to achieve energy storage, when the second crank arm 30 at both ends of the energy storage shaft 20 passes the highest point, the closing catch will buckle the cam 17 positioning piece 15 to prepare for closing; the travel switch 26 is switched through the first connecting rod 28 to achieve motor power-off, and the energy storage process is ended; when manually storing energy, the handle is inserted into the corresponding hole of the gear reduction box 19, and the handle is rotated clockwise, and the vacuum circuit breaker operating mechanism can store energy;

[0039] When the closing process: when the closing coil 12 is energized, the first iron core 1301 will hit the first tripping plate 1401, that is, the constraint of the cam 17 positioning piece 15 is removed, the closing spring 8 is transmitted to the first connecting rod 28 through the cam 17 and the first four connecting rod mechanism 1101 through the main rotating shaft 6, so that the first connecting rod 28 moves upward, and the closing action of the circuit breaker is realized; the closing catch buckles the first crank arm 22, so that the vacuum circuit breaker remains in the closed state; when the auxiliary switch 33 is switched by the second connecting rod 32, the closing loop is cut off, the opening loop is connected, and the closing of the circuit breaker is ended. During the closing process, the contact pressure spring 10 and the opening spring 31 are stored with energy, and are ready for opening;

[0040] When the opening process: when the opening coil 23 is connected to the opening signal, the second iron core 1302 hits the opening catch to make it separate from the second tripping plate 1402; under the action of the opening spring 31 and the contact pressure spring 10, the main rotating shaft 6 is reversely rotated, so as to drive the first connecting rod 28 to move downward, and the vacuum circuit breaker is opened; when manually opening, the opening catch is directly buckled by pressing the opening button in the mechanism box 1, so that the circuit breaker is opened.

[0041] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An outdoor modular vacuum circuit breaker for electrified railways, characterized in that, It includes a housing (1), a transmission module (2) and a monitoring and control unit disposed inside the housing (1), an insulation module (3) disposed on the top of the housing (1), and an insulation pull rod (5) and a solid-sealing pole (4) respectively connected to the transmission module (2). The monitoring and control unit is used to monitor the operating status of each component in real time. The transmission module (2) includes a transmission component and a circuit breaker opening component and a circuit breaker closing component connected to the transmission component respectively. The transmission component drives the circuit breaker opening component to perform a circuit breaker opening operation and drives the circuit breaker closing component to perform a circuit breaker closing operation. The main control board of the monitoring and control unit is communicatively connected to the drive component (24) of the transmission component.

2. The outdoor modular vacuum circuit breaker for electrified railways according to claim 1, characterized in that, The transmission assembly includes the drive component (24), gear reducer (19), output shaft (21), motor gear submodule (9), main shaft (6), first four-bar linkage (1101), second four-bar linkage (1102), moving conductive rod (18), energy storage shaft (20), energy storage spring (25), large gear (16), and cam (17). The output shaft (21) is connected to one end of the drive unit (24), the motor gear submodule (9) is connected to the other end of the drive unit (24), the large gear (16) is connected to the output shaft (21), the cam (17) is connected to one end of the energy storage shaft (20), and the other end of the energy storage shaft (20) is connected to the large gear (16). One end of the energy storage spring (25) is located at the bottom of the gear reducer (19), and the other end is connected to the... The energy storage shaft (20) is connected, and one end of the insulating pull rod (5) is connected to one end of the first four-bar linkage (1101) and the moving conductive rod (18). The other end of the moving conductive rod (18) is connected to the solid-sealed pole (4). The other end of the first four-bar linkage (1101) is connected to the main rotating shaft (6). One end of the second four-bar linkage (1102) is connected to the first four-bar linkage (1101), and the other end is connected to the contact pressure spring (10) of the closing assembly.

3. The outdoor modular vacuum circuit breaker for electrified railways according to claim 2, characterized in that, The closing assembly includes a closing coil (12), a closing spring (8), a first connecting rod (28), a second connecting rod (32), an auxiliary switch (33), a limit switch (26), a first iron core (1301), a first trip plate (1401), a closing lever (29), a first crank arm (22), a cam (17), and a positioning component (15). The closing coil (12) is located outside the gear reducer (19), and the first iron core (1301) is located inside the closing coil (12). The closing coil (12) is arranged opposite to the first trip plate (1401). The first trip plate (1401) is fixedly connected to one end of the closing lever (29) and the cam (17) positioning member (15). The cam (17) positioning member (15) is located in the middle of the gear reducer (19). The cam (17) positioning member (15) is connected to the cam (17). The first crank arm (22) One end is connected to the other end of the closing lever (29), one end of the first crank arm (22) is connected to the housing (1), the first connecting rod (28) and the second connecting rod (32) are respectively connected to the main rotating shaft (6), the other end of the first connecting rod (28) is connected to the limit switch (26), and the limit switch (26) is connected to the gear reducer (19), the other end of the second connecting rod (32) is connected to the other end of the auxiliary switch (33), and the closing spring (8) is set on one side of the opening sub-module (7) and connected to one end of the motor gear sub-module (9).

4. The outdoor modular vacuum circuit breaker for electrified railways according to claim 3, characterized in that, The tripping assembly includes a tripping coil (23), a second iron core (1302), a second tripping plate (1402), a tripping lever (27), a tripping sub-module (7), a tripping spring (31), a contact pressure spring (10), and a second crank arm (30). The trip coil (23) is arranged opposite to the second trip plate (1402), the second iron core (1302) is arranged inside the trip coil (23), one end of the second trip plate (1402) is connected to the trip lever (27), the other end of the second trip plate (1402) is connected to the cam (17), the second crank arm (30) is connected to the energy storage shaft (20), one end of the trip sub-module (7) and one end of the trip spring (31) are respectively connected to the main rotating shaft (6), the other end of the trip sub-module (7) is fixedly connected to the housing (1), the other end of the trip spring (31) is fixedly connected to the housing (1), and the other end of the contact pressure spring (10) is respectively connected to one end of the second four-bar linkage (1102).

5. The outdoor modular vacuum circuit breaker for electrified railways according to claim 1, characterized in that, The monitoring and control unit includes a control board and a displacement sensor, a temperature sensor, a current monitoring sensor, a voltage monitoring sensor and a mechanical characteristic monitoring IED that are respectively connected to the control board. The displacement sensor is installed inside the housing (1). The control board and the mechanical characteristic monitoring IED are respectively arranged on the housing (1). The temperature sensor, the current monitoring sensor and the voltage monitoring sensor are respectively connected to the solid-sealed pole (4).

6. The outdoor modular vacuum circuit breaker for electrified railways according to claim 2, characterized in that, The drive unit (24) is a motor.

7. The outdoor modular vacuum circuit breaker for electrified railways according to any one of claims 1 to 6, characterized in that, The external creepage distance of the solid-sealed pole (4) is 1500mm-1600mm.

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