CN212967594U

CN212967594U - Vacuum circuit breaker-fuse combined electrical apparatus

Info

Publication number: CN212967594U
Application number: CN202022322221.4U
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 current vacuum circuit breaker combined electrical apparatus not set up the fuse is solved. It includes support body and mechanism case, the support body on be equipped with first wiring end, second wiring end, isolator and insulating utmost point post, insulating utmost point post on be equipped with vacuum interrupter and fuse, the fuse can dismantle with insulating utmost point post and be connected, first wiring end loop through isolator, vacuum interrupter, fuse and be connected with the second wiring end. The beneficial effects of the utility model are that, it can realize that short circuit and overcurrent protection make product security performance high to have set up the fuse, and the fuse can be dismantled with insulating utmost point post moreover and be connected for fuse easy dismounting, the maintenance is simple. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life.

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 is not provided with a fuse generally, so that the safety performance of the product is low.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the existing vacuum circuit breaker combined electrical apparatus is not provided with a fuse in the background technology, the utility model provides a vacuum circuit breaker-fuse combined electrical apparatus.

The technical scheme of the utility model is that: the utility model provides a vacuum circuit breaker-fuse combined electrical apparatus, includes support body and mechanism case, the support body on be equipped with first wiring end, second wiring end, isolator and insulating utmost point post, insulating utmost point post on be equipped with vacuum interrupter and fuse, the fuse can dismantle with insulating utmost point post and be connected, first wiring end loop through isolator, vacuum interrupter, fuse and second wiring end and be connected.

As an improvement of the utility model, the insulating utmost point post include the insulator, the insulator locate the vacuum arc-extinguishing chamber outdoor, the fuse locate the outside of insulator surface.

As a further improvement, the vacuum arc extinguish chamber is electrically connected with the fuse, and the vacuum arc extinguish chamber and the fuse are arranged inside and outside the insulating cylinder in parallel.

As a further improvement, the mechanism case in be equipped with drive mechanism and separating brake mechanism, drive mechanism be connected with the circuit breaker transfer line through the transmission main shaft, the circuit breaker transfer line be connected with vacuum interrupter through the circuit breaker pull rod.

As a further improvement, the fuse be connected with separating brake mechanism through fuse drive mechanism, separating brake mechanism be connected with drive mechanism and drive the action of circuit breaker pull rod through the transmission main shaft and control vacuum interrupter separating brake.

As a further improvement, fuse drive mechanism include fuse transmission shaft, fuse baffle turning arm and fuse pull rod, the articulated setting of fuse baffle turning arm and fuse pull rod, fuse baffle turning arm one end and the laminating of fuse thimble face, the other end is connected with the fuse transmission shaft through the fuse pull rod.

As a further improvement, the transmission shaft of the fuse is provided with a connecting crank arm, and the connecting crank arm is connected with the separating brake mechanism through a separating brake connecting rope and a separating brake connecting plate.

As a further improvement of the utility model, fuse one end be fixed in on the insulating cylinder, the other end is fixed in on the second wiring end.

As a further improvement of the utility model, the second wiring end and the support body between be equipped with insulating support column.

The beneficial effects of the utility model are that, it can realize that short circuit and overcurrent protection make product security performance high to have set up the fuse, and the fuse can be dismantled with the circuit breaker and be connected moreover for fuse easy dismounting, the maintenance is simple. 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 view of the structure inside the mechanism case 2 in fig. 1.

Fig. 4 is a schematic partial sectional structure diagram of an embodiment of the present invention.

In the figure, 1, a frame body; 2. a mechanism box; 3. a first terminal; 4. a second terminal; 5. an isolating switch; 6. insulating the pole; 61. an insulating cylinder; 62. a vacuum arc-extinguishing chamber; 7. a fuse; 8. a transmission mechanism; 81. a transmission main shaft; 82. a circuit breaker drive rod; 83. a breaker pull rod; 9. a fuse transmission mechanism; 91. a fuse transmission shaft; 92. a fuse baffle crank arm; 93. a fuse pull rod; 94. a connecting shaft crank arm; 95. a brake separating connecting rope; 96. a brake separating connecting plate; 10. a brake separating mechanism; 11. grounding and buckling; 12. insulating support post.

Detailed Description

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

shown by figure 1 in combination with figures 2-4, a vacuum circuit breaker-fuse combined electrical apparatus, includes support body 1 and mechanism case 2, support body 1 on be equipped with first wiring end 3, second wiring end 4, isolator 5 and insulating utmost point post 6, insulating utmost point post 6 on be equipped with vacuum interrupter 62 and fuse 7, fuse 7 can dismantle with insulating utmost point post 6 and be connected, first wiring end 3 loop through isolator 5, vacuum interrupter 62, fuse 7 and be connected with second wiring end 4. The beneficial effects of the utility model are that, it can realize that short circuit and overcurrent protection make product security performance high to have set up the fuse, and the fuse can be dismantled with the circuit breaker and be connected moreover for fuse easy dismounting, the maintenance is simple. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life.

Insulating utmost point post 6 include insulating cylinder 61, insulating cylinder 61 cover locate vacuum interrupter 62 outside, fuse 7 locate the outside of insulating cylinder 61 surface. Specifically, the vacuum interrupter 62 is electrically connected to the fuse 7, and the vacuum interrupter 62 and the fuse 7 are disposed inside and outside the insulating cylinder 61 in parallel. 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.

Mechanism case 2 in be equipped with drive mechanism 8 and separating brake mechanism 10, drive mechanism 8 be connected with circuit breaker transfer line 82 through transmission main shaft 81, circuit breaker transfer line 82 be connected with vacuum interrupter 62 through circuit breaker pull rod 83. Specifically, the transmission mechanism 8 and the opening mechanism 10 are implemented by the prior art, and are not described herein again. The structure enables the product to reliably drive the vacuum arc-extinguishing chamber to act.

The fuse 7 is connected with the opening mechanism 10 through the fuse transmission mechanism 9, the opening mechanism 10 is connected with the transmission mechanism 8, and the opening of the vacuum arc-extinguishing chamber 62 is controlled by operating the transmission main shaft 81 to drive the breaker pull rod 83 to act. Specific speaking, fuse drive mechanism 9 include fuse transmission shaft 91, fuse baffle connecting lever 92 and fuse pull rod 93, fuse baffle connecting lever 92 and the articulated setting of fuse pull rod 93, fuse baffle connecting lever 92 one end and the laminating of 7 thimble faces of fuse, the other end is connected with fuse transmission shaft 91 through fuse pull rod 93. More specifically, the fuse transmission shaft 91 is provided with a connecting shaft crank arm 94, and the connecting shaft crank arm 94 is connected with the opening mechanism 10 through an opening connecting rope 95 and an opening connecting plate 96. By the structure, the ejector pin can reliably drive the opening mechanism 10 to act when the ejector pin is ejected out after the fuse 7 is fused, so that the opening mechanism 10 drives the transmission main shaft 81 to move, the opening of the circuit breaker is realized, the fuse 7 can reliably drive the circuit breaker to open the circuit when fused, and the safety performance of a product is higher. More specifically, the specific transmission structure of the opening mechanism 10 for driving the breaker to open is the prior art and will not be described herein.

One end of the fuse 7 is fixed on the insulating cylinder 61, and the other end is fixed on the second terminal 4. The structure facilitates installation of the fuse and the second wiring terminal, and meanwhile, the frame body is prevented from being electrified, so that the safety performance of the product is higher. Specifically, an insulating support column 12 is arranged between the second terminal 4 and the frame body 1. Such a structure makes the product safety higher. More specifically, a voltage sensor can be disposed in the insulating support column 12. Thus further improving the safety performance of the product.

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. The vacuum circuit breaker-fuse combined electrical appliance comprises a frame body (1) and a mechanism box (2), and is characterized in that a first wiring terminal (3), a second wiring terminal (4), a disconnecting switch (5) and an insulating pole (6) are arranged on the frame body (1), a vacuum arc-extinguishing chamber (62) and a fuse (7) are arranged on the insulating pole (6), the fuse (7) is detachably connected with the insulating pole (6), and the first wiring terminal (3) is connected with the second wiring terminal (4) sequentially through the disconnecting switch (5), the vacuum arc-extinguishing chamber (62) and the fuse (7).

2. A vacuum circuit breaker-fuse combination according to claim 1, characterized in that the insulating pole (6) comprises an insulating cylinder (61), the insulating cylinder (61) is arranged outside the vacuum interrupter (62), and the fuse (7) is arranged outside the outer surface of the insulating cylinder (61).

3. A vacuum circuit breaker-fuse combination according to claim 2, characterized in that the vacuum interrupter (62) is electrically connected to the fuse (7), the vacuum interrupter (62) and the fuse (7) being arranged in parallel inside and outside the insulating cylinder (61).

4. A vacuum circuit breaker-fuse combination electrical appliance according to claim 1, characterized in that the mechanism box (2) is provided with a transmission mechanism (8) and a tripping mechanism (10), the transmission mechanism (8) is connected with a circuit breaker transmission rod (82) through a transmission main shaft (81), and the circuit breaker transmission rod (82) is connected with the vacuum interrupter (62) through a circuit breaker pull rod (83).

5. A vacuum circuit breaker-fuse combination as claimed in claim 4, characterized in that the fuse (7) is connected to the switching-off mechanism (10) via a fuse transmission mechanism (9), the switching-off mechanism (10) is connected to the transmission mechanism (8) and controls the switching-off of the vacuum interrupter (62) by operating the transmission main shaft (81) to drive the breaker pull rod (83) to move.

6. The vacuum circuit breaker-fuse combined electrical apparatus of claim 5, characterized in that the fuse transmission mechanism (9) comprises a fuse transmission shaft (91), a fuse baffle crank arm (92) and a fuse pull rod (93), the fuse baffle crank arm (92) is hinged with the fuse pull rod (93), one end of the fuse baffle crank arm (92) is attached to the thimble surface of the fuse (7), and the other end of the fuse baffle crank arm is connected with the fuse transmission shaft (91) through the fuse pull rod (93).

7. The vacuum circuit breaker-fuse combined electrical apparatus of claim 6, characterized in that the fuse transmission shaft (91) is provided with a connecting shaft crank arm (94), and the connecting shaft crank arm (94) is connected with the opening mechanism (10) through an opening connecting rope (95) and an opening connecting plate (96).

8. A vacuum interrupter-fuse combination according to claim 2 wherein the fuse (7) is fixed to the insulating cylinder (61) at one end and to the second terminal (4) at the other end.

9. A vacuum interrupter-fuse combination according to claim 8 characterized in that an insulating support column (12) is provided between the second terminal (4) and the frame (1).