CN212967596U

CN212967596U - Vacuum circuit breaker-fuse combined electrical apparatus

Info

Publication number: CN212967596U
Application number: CN202022324085.2U
Authority: CN
Inventors: 周强彬; 周文; 代中矿
Original assignee: Zhejiang Tuoyuan Electric Co ltd
Current assignee: Zhejiang Tuoyuan Electric Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-04-13
Anticipated expiration: 2030-10-19

Abstract

A vacuum circuit breaker-fuse combination. The problem of do not have blocking device between current circuit breaker and the isolator, have the potential safety hazard is solved. It includes support body and mechanism case, the support body on be equipped with isolator, insulating utmost point post, isolation operation axle, circuit breaker transfer line and drive mechanism, the isolation operation axle have the drive isolator combined floodgate first state and the second state of isolator separating brake, the circuit breaker transfer line first position that has the drive insulating utmost point post combined floodgate and the second position of insulating utmost point post separating brake, the support body on be equipped with blocking device, blocking device have the second state of the isolator action of being convenient for that closes the separating brake of unblock when insulating utmost point post is in the first state and unblock when insulating utmost point post is in the second position. The utility model discloses locking device has been increased for product security performance is higher.

Description

Vacuum circuit breaker-fuse combined electrical apparatus

Technical Field

The utility model relates to a combined electrical apparatus, concretely relates to vacuum circuit breaker-fuse combined electrical apparatus.

Background

A composite appliance is a device which integrates two or more appliances into a whole according to wiring requirements, and the appliances still keep original performances. The structure is compact, the appearance and the installation size are small, the use is convenient, the performance of each electric appliance can be better coordinated and matched, and the electric appliances can be divided into a low-voltage combined electric appliance and a high-voltage combined electric appliance according to the voltage.

The high-voltage combined electrical apparatus is divided into an open type and a totally enclosed type according to an insulation structure. The former uses an isolating switch or a breaker as a main body and combines a current transformer, a voltage transformer, a cable head and other elements together. In the latter, the high-voltage charged parts of the components are sealed in a grounded metal shell, the shell is filled with gas, oil or solid insulating medium with good insulating property, and the components (generally comprising a circuit breaker, a disconnecting switch, a grounding switch, a voltage transformer, a current transformer, a bus, a lightning arrester, a cable terminal and the like) are sequentially connected and integrated into a whole according to the wiring requirement. The existing vacuum circuit breaker-fuse combined electrical apparatus is not provided with isolation interlocking, when the circuit breaker is switched on, the circuit breaker can still be switched off by operating an isolation switch, and great potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

For solving the problem that there is not interlock between current circuit breaker and the isolator among the background art, there is the potential safety hazard, the utility model provides a vacuum circuit breaker-fuse combined electrical apparatus.

The technical scheme of the utility model is that: a vacuum circuit breaker-fuse combined electrical apparatus comprises a frame body and a mechanism box, wherein the frame body is provided with an isolating switch, an insulating pole, an isolating operation shaft, a circuit breaker transmission rod and a transmission mechanism, and the transmission mechanism is connected with the circuit breaker transmission rod and used for driving the circuit breaker transmission rod to act; the isolation operation shaft has a first state for driving the isolation switch to be switched on and a second state for driving the isolation switch to be switched off, the circuit breaker transmission rod has a first position for driving the insulation pole to be switched on and a second position for driving the insulation pole to be switched off, the frame body is provided with a locking device, and the locking device has a first state for locking the isolation switch when the insulation pole is positioned at the first position and a second state for unlocking the isolation switch to be convenient for the isolation switch to be switched on and switched off when the insulation pole is positioned at the second position.

As an improvement of the utility model, insulating utmost point post include vacuum interrupter and circuit breaker pull rod, the circuit breaker transfer line drive the action of vacuum interrupter through the circuit breaker pull rod, the circuit breaker transfer line be connected with blocking device and drive the action of blocking device.

As a further improvement, the isolation operation shaft be connected with the isolation action shaft through link assembly, the isolation action shaft be connected with isolator, the blocking device realize isolator's shutting spacingly with link assembly interlocking when insulating utmost point post is in the first position.

As a further improvement of the present invention, the locking device includes a locking rod and an elastic member, the locking rod has a first position interlocked with the connecting rod assembly when the locking device is in the first state and a second position for unlocking the disconnecting switch to facilitate the switching on and off of the disconnecting switch, and the elastic member has a movement tendency for driving the locking rod to tend to the second position.

As a further improvement, the frame body on be equipped with the locating plate, locking lever one end stretch out the frame body and be used for being connected with link assembly outward, the other end passes the locating plate and offsets with the circuit breaker transfer line.

As a further improvement, the connecting rod assembly on be equipped with the limiting plate, the limiting plate on be equipped with the spacing groove, the locking rod block when the first position spacing inslot that the limiting plate was gone into realizes the shutting of connecting rod assembly and isolator.

As a further improvement, the connecting rod assembly comprises a first connecting lever, a second connecting lever and an isolation connecting rod, the isolation operating shaft is connected with the first connecting lever, the isolation operating shaft is connected with the second connecting lever, the first connecting lever is connected with the second connecting lever through the isolation connecting rod, and the limiting plate is arranged on the isolation connecting rod.

As a further improvement, the utility model also comprises a fuse, the fuse can be dismantled with insulating utmost point post and be connected.

As a further improvement, the insulating pole column comprises an insulating cylinder, the insulating cylinder is sleeved outside the vacuum arc extinguish chamber, the fuse is arranged outside the outer surface of the insulating cylinder, and the vacuum arc extinguish chamber is electrically connected with the fuse.

The beneficial effects of the utility model are that, locking device has been increased for can carry out the shutting to isolator when vacuum interrupter closes a floodgate, avoid maloperation separating brake isolator under the circuit breaker combined floodgate condition, make product security performance higher. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural view in another direction of fig. 1.

Fig. 3 is a schematic structural view in another direction of fig. 1.

Fig. 4 is a partial cross-sectional structural schematic view of fig. 1.

Fig. 5 is a schematic structural view in another direction of fig. 1.

In the figure, 1, a frame body; 11. positioning a plate; 2. an isolating switch; 3. insulating the pole; 31. a vacuum arc-extinguishing chamber; 32. a breaker pull rod; 33. an insulating cylinder; 4. isolating the operating shaft; 5. a circuit breaker drive rod; 6. a transmission mechanism; 7. a locking device; 71. a locking lever; 72. an elastic member; 8. a connecting rod assembly; 81. a limiting plate; 811. a limiting groove; 82. a first crank arm; 83. a second crank arm; 84. an isolation link; 9. isolating the action shaft; 10. and a fuse.

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1 and fig. 2-5, a vacuum circuit breaker-fuse combined electrical apparatus includes a frame body 1, wherein the frame body 1 is provided with an isolation switch 2, an insulating pole 3, an isolation operation shaft 4, a circuit breaker transmission rod 5, a transmission mechanism 6 and a connecting rod assembly 8, and the transmission mechanism 6 is connected with the circuit breaker transmission rod 5 and is used for driving the circuit breaker transmission rod 5 to move; isolation operation axle 4 and isolator 2 be connected through link assembly 8, the action of manual operation isolation operation axle 4 controls isolator 2 and closes the separating brake, isolation operation axle 4 have the first state of closing a floodgate through link assembly 8 drive isolator 2 and the second state of isolator 2 separating brake, circuit breaker transfer line 5 first position that has the closing of drive insulating utmost point post 3 and the second position of insulating utmost point post 3 separating brake, support body 1 on be equipped with blocking device 7, blocking device 7 have the second state of the unblock be convenient for isolator 2 to close the separating brake action when insulating utmost point post 3 is in the second position of blocking isolator 2 when insulating utmost point post 3 is in the first position. The beneficial effects of the utility model are that, locking device has been increased for can block isolator when the circuit breaker closes a floodgate, avoid maloperation separating brake isolator under the circuit breaker combined floodgate condition, make product security performance higher. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life. Specifically, the specific structure of the transmission mechanism 6, the structure for driving the breaker transmission rod 5 to act, and the structure for manually operating the isolation operation shaft 4 to act to control the on/off of the isolation switch 2 belong to the prior art, and are not described herein again.

Insulating utmost point post 3 include vacuum interrupter 31 and circuit breaker pull rod 32, circuit breaker transfer line 5 drive vacuum interrupter 31 action through circuit breaker pull rod 32, circuit breaker transfer line 5 be connected with blocking device 7 and drive blocking device 7 action. Therefore, the isolating switch 2 can be locked when the circuit breaker transmission rod 5 acts, the misoperation of the isolating switch is avoided, and the safety performance of the product is higher.

The isolation operation shaft 4 is connected with an isolation action shaft 9 through a connecting rod assembly 8, the isolation action shaft 9 is connected with the isolation switch 2, and the locking device 7 is interlocked with the connecting rod assembly 8 when the insulating pole 3 is at the first position to realize locking limit of the isolation switch 2. The locking device 7 realizes the locking of the isolating switch through the interlocking of the connecting rod assembly 8, and has simple structure and reliable locking.

The locking device 7 comprises a locking rod 71 and an elastic piece 72, the locking rod 71 has a first position which is interlocked with the connecting rod assembly 8 when the locking device 7 is in a first state and a second position which is unlocked to facilitate the closing and opening actions of the disconnecting switch 2, and the elastic piece 72 has a movement tendency which drives the locking rod 71 to move towards the second position. Specifically, the frame body 1 is provided with a positioning plate 11, one end of the locking rod 71 extends out of the frame body 1 and is connected with the connecting rod assembly 8, and the other end of the locking rod passes through the positioning plate 11 and abuts against the circuit breaker transmission rod 5. Such a structure facilitates the installation of the locking lever 71, which is convenient. More specifically, the connecting rod assembly 8 is provided with a limiting plate 81, the limiting plate 81 is provided with a limiting groove 811, and the locking rod 71 is clamped into the limiting groove 811 of the limiting plate 81 at the first position to lock the connecting rod assembly 8 and the disconnecting switch 2. Such a structure facilitates reliable locking, is simple in structure, facilitates reliable locking by adjusting the position of the limiting plate, and does not affect the strength of the isolating connecting rod 84.

Link assembly 8 include first crank arm 82, second crank arm 83 and isolation connecting rod 84, isolation operation axle 4 be connected with first crank arm 82, isolation action axle 9 be connected with second crank arm 83, first crank arm 82 be connected with second crank arm 83 through isolation connecting rod 84, limiting plate 81 locate on isolation connecting rod 84. The structure is convenient for reliable transmission, and the action of the isolating switch is stable and reliable

The utility model discloses still include fuse 10, fuse 10 can dismantle with insulating utmost point post 3 and be connected. Specifically, insulating utmost point post 3 include insulating cylinder 33, insulating cylinder 33 cover locate outside vacuum interrupter 31, fuse 10 locate the outside of insulating cylinder 33 surface, vacuum interrupter 31 be connected with fuse 10 electricity. The structure ensures that the fuse is convenient to install, reliable in fixation, and reasonable in product space utilization, and does not increase the overall volume of the product. The fuse is arranged on the circuit breaker of each phase, and the structure enables the product safety performance to be higher. And the fuse can be dismantled with the circuit breaker and be connected for fuse easy dismounting, the maintenance is simple.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.

Claims

1. A vacuum circuit breaker-fuse combined electrical apparatus comprises a frame body (1), wherein a disconnecting switch (2), an insulating pole (3), an isolating operation shaft (4), a circuit breaker transmission rod (5) and a transmission mechanism (6) are arranged on the frame body (1), and the transmission mechanism (6) is connected with the circuit breaker transmission rod (5) and used for driving the circuit breaker transmission rod (5) to act; the isolating switch is characterized in that the isolating operation shaft (4) has a first state for driving the isolating switch (2) to be switched on and a second state for driving the isolating switch (2) to be switched off, the breaker transmission rod (5) has a first position for driving the insulating pole (3) to be switched on and a second position for driving the insulating pole (3) to be switched off, the frame body (1) is provided with a locking device (7), and the locking device (7) has a first state for locking the isolating switch (2) when the insulating pole (3) is located at the first position and a second state for unlocking the isolating switch (2) to be switched on and switched off conveniently when the insulating pole (3) is located at the second position.

2. The vacuum circuit breaker-fuse combination electrical apparatus of claim 1, characterized in that the insulated pole (3) comprises a vacuum interrupter (31) and a breaker pull rod (32), the breaker transmission rod (5) drives the vacuum interrupter (31) to move through the breaker pull rod (32), and the breaker transmission rod (5) is connected with the locking device (7) and drives the locking device (7) to move.

3. The vacuum circuit breaker-fuse combination according to claim 2, characterized in that the isolating operation shaft (4) is connected to the isolating operation shaft (9) through a connecting rod assembly (8), the isolating operation shaft (9) is connected to the isolating switch (2), and the locking device (7) is interlocked with the connecting rod assembly (8) to realize the locking limit of the isolating switch (2) when the insulated pole (3) is at the first position.

4. Vacuum interrupter-fuse combination according to claim 3, characterized in that the blocking device (7) comprises a blocking lever (71) and a spring (72), the blocking lever (71) having a first position for interlocking with the linkage assembly (8) when the blocking device (7) is in the first state and a second position for unlocking for opening and closing the disconnector (2), the spring (72) having a tendency to drive the blocking lever (71) towards the second position.

5. The vacuum circuit breaker-fuse combination electrical apparatus of claim 4, characterized in that the frame body (1) is provided with a positioning plate (11), one end of the locking rod (71) extends out of the frame body (1) for connecting with the connecting rod assembly (8), and the other end passes through the positioning plate (11) to abut against the circuit breaker transmission rod (5).

6. The vacuum circuit breaker-fuse combination electrical apparatus of claim 5, characterized in that the connecting rod assembly (8) is provided with a limiting plate (81), the limiting plate (81) is provided with a limiting groove (811), the locking rod (71) is clamped into the limiting groove (811) of the limiting plate (81) at the first position to realize the locking of the connecting rod assembly (8) and the isolating switch (2).

7. The vacuum circuit breaker-fuse combination electrical apparatus of claim 6, wherein the connecting rod assembly (8) comprises a first connecting lever (82), a second connecting lever (83) and an isolating connecting rod (84), the isolating operation shaft (4) is connected with the first connecting lever (82), the isolating operation shaft (9) is connected with the second connecting lever (83), the first connecting lever (82) is connected with the second connecting lever (83) through the isolating connecting rod (84), and the limiting plate (81) is disposed on the isolating connecting rod (84).

8. The vacuum interrupter-fuse combination according to claim 2, further comprising a fuse (10), wherein the fuse (10) is detachably connected to the insulating pole (3).

9. The vacuum circuit breaker-fuse combination electrical apparatus of claim 8, characterized in that the insulating pole (3) comprises an insulating cylinder (33), the insulating cylinder (33) is sleeved outside the vacuum interrupter (31), the fuse (10) is arranged outside the outer surface of the insulating cylinder (33), and the vacuum interrupter (31) is electrically connected with the fuse (10).