Double-spring vacuum circuit breaker

Abstract

The utility model discloses a double-spring vacuum circuit breaker which comprises a circuit breaker shell, fixing plates are symmetrically arranged on the center of the circuit breaker shell, spring fixing rods are arranged on the tops of the fixing plates in a penetrating mode, spring energy storage devices are arranged on the spring fixing rods in a hanging mode, the spring energy storage devices are symmetrically arranged on the two sides, and the number of the spring energy storage devices is two. The double springs are used as a transmission mechanism of the circuit breaker, the problem that mechanical closing does not act due to transmission abrasion of the connecting rod after long-time use is solved, the reliability of opening and closing actions of the vacuum circuit breaker is improved, meanwhile, the maintenance cost is saved, and a guarantee is provided for safe operation in the future.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum circuit breakers, in particular to a double-spring vacuum circuit breaker. Background Art

[0002] As an important part of the power system, the operating stability and reliability of vacuum circuit breakers are crucial to ensure the safety and continuity of power supply. However, in practical applications, the transmission mechanism design of such circuit breakers often adopts connecting rod transmission. Although connecting rod transmission has certain advantages in mechanical transmission, such as large transmission torque and compact structure, its application in 6kV vacuum circuit breakers also exposes some obvious shortcomings.

[0003] First, the structure of the connecting rod transmission is relatively complex, involving the linkage and coordination of multiple parts, which increases the difficulty of maintenance and repair. In the working environment where the circuit breaker is frequently operated and the load changes greatly, this complex structure is more prone to wear and fatigue, thereby reducing the service life of the equipment.

[0004] Secondly, due to the contact area and friction between the connecting rod transmission parts, the wear amount is large under long-term operation. Wear will not only reduce the transmission efficiency, but also cause the transmission parts to loosen or deform, further affecting the normal operation of the circuit breaker.

[0005] During long-term use, these potential faults will gradually appear. For example, the failure of mechanical closing is caused by the jamming or failure of the components in the connecting rod transmission mechanism; and the failure of closing is caused by the increase of the gap due to the wear of the transmission components, which makes the circuit breaker unable to remain in the closed state stably after closing. Once these faults occur, they will not only affect the normal operation of the unit, but also cause damage to important auxiliary equipment and even cause safety accidents. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model solves the problem in the prior art that the mechanical closing circuit breaker does not operate due to the wear of the connecting rod.

[0007] A double-spring vacuum circuit breaker comprises a circuit breaker housing. A fixing plate is symmetrically arranged at the center of the circuit breaker housing. A spring fixing rod is penetrated through the top of the fixing plate. A spring energy accumulator is suspended on the spring fixing rod.

[0008] Furthermore, the spring energy accumulators are symmetrically arranged on both sides, and two are arranged.

[0009] Furthermore, the fixing plate is formed by stacking two rectangular flat plates, and a plurality of mounting holes are opened on the surfaces of the flat plates.

[0010] Furthermore, a closing release is arranged at one end of the fixing plate, and the closing release is arranged below the spring fixing rod.

[0011] Furthermore, a switch-off releaser is arranged at the other end of the fixing plate, and the switch-off releaser and the switch-on releaser are located at the same height.

[0012] Furthermore, an energy storage motor is arranged at the lower end of the opening release, and both ends of the energy storage motor are fixedly connected to the fixing plate.

[0013] Furthermore, the lower end of the spring energy accumulator is provided with an energy storage contact, which is a combination structure of a fixed ear and a rotating arm, one end of the fixed ear is arranged at the bottom of the spring energy accumulator, and one end of the rotating arm is arranged on the fixed plate.

[0014] Beneficial effects of the utility model:

[0015] The present application uses a double spring as the transmission mechanism of the circuit breaker, which improves the problem of mechanical closing failure caused by wear of the connecting rod transmission after long-term use, improves the reliability of the opening and closing actions of the vacuum circuit breaker, and also saves maintenance costs, providing a guarantee for future safe operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the double-spring vacuum circuit breaker structure.

[0017] In the figure: 1-circuit breaker housing, 2-spring energy accumulator, 3-spring fixing rod, 4-fixing plate, 5-closing release, 6-opening release, 7-energy storage motor, 8-energy storage contact. DETAILED DESCRIPTION

[0018] The following is an explanation of the implementation of the present invention by specific specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to the implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present utility model. In order to provide a deep understanding of the present utility model, many specific details will be included in the following description. The present utility model can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present utility model, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. It should be noted that in this specification, similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures.

[0019] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "set", "connected", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances. The directions or positional relationships indicated by “upper”, “lower”, “left”, “right”, “inner”, “bottom”, etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0020] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] In this embodiment, as shown in the attached Figure 1 As shown, a double-spring vacuum circuit breaker includes a circuit breaker housing 1, a fixing plate 4 is symmetrically arranged at the center of the circuit breaker housing 1, a spring fixing rod 3 is penetrated through the top of the fixing plate 4, and a spring energy accumulator 2 is suspended on the spring fixing rod 3.

[0022] Furthermore, the spring energy accumulators 2 are symmetrically arranged on both sides, and two are arranged.

[0023] Furthermore, the fixing plate 4 is formed by stacking two rectangular flat plates, and a plurality of installation holes are opened on the surfaces of the flat plates.

[0024] Furthermore, a closing release 5 is provided at one end of the fixing plate 4 , and the closing release 5 is provided below the spring fixing rod 3 .

[0025] Furthermore, an opening release 6 is provided at the other end of the fixing plate 4 , and the opening release 6 and the closing release 5 are located at the same height.

[0026] Furthermore, an energy storage motor 7 is provided at the lower end of the opening release 6 , and both ends of the energy storage motor 7 are fixedly connected to the fixing plate 4 .

[0027] Furthermore, the lower end of the spring energy accumulator 2 is provided with an energy storage contact 8, and the energy storage contact 6 is a combination structure of a fixed ear and a rotating arm, one end of the fixed ear is arranged at the bottom of the spring energy accumulator 2, and one end of the rotating arm is arranged on the fixed plate 4.

[0028] Beneficial effects of the utility model:

[0029] The present application uses a double spring as the transmission mechanism of the circuit breaker, which improves the problem of mechanical closing failure caused by wear of the connecting rod transmission after long-term use, improves the reliability of the opening and closing actions of the vacuum circuit breaker, and also saves maintenance costs, providing a guarantee for future safe operation.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A double-spring vacuum circuit breaker, characterized in that: It comprises a circuit breaker housing (1), wherein a fixing plate (4) is symmetrically arranged at the center of the circuit breaker housing (1), a spring fixing rod (3) is penetrated through the top of the fixing plate (4), and a spring energy accumulator (2) is suspended from the spring fixing rod (3).

2. A double-spring vacuum circuit breaker according to claim 1, characterized in that: The spring energy accumulators (2) are symmetrically arranged on both sides, and two of them are arranged.

3. A double-spring vacuum circuit breaker according to claim 1, characterized in that: The fixing plate (4) is formed by stacking two rectangular flat plates, and a plurality of mounting holes are provided on the surfaces of the flat plates.

4. A double-spring vacuum circuit breaker according to claim 1, characterized in that: It also includes a closing release (5) disposed at one end of the fixing plate (4), and the closing release (5) is disposed below the spring fixing rod (3).

5. A double-spring vacuum circuit breaker according to claim 2, characterized in that: The other end of the fixing plate (4) is also provided with an opening release (6), and the opening release (6) and the closing release (5) are located at the same height.

6. A double-spring vacuum circuit breaker according to claim 5, characterized in that: The lower end of the opening release (6) is also provided with an energy storage motor (7), and both ends of the energy storage motor (7) are fixedly connected to the fixing plate (4).

7. A double-spring vacuum circuit breaker according to claim 1, characterized in that: The spring accumulator (2) also includes an energy storage contact (8) disposed at the lower end thereof. The energy storage contact (8) is a combined structure of a fixed ear and a rotating arm, wherein one end of the fixed ear is disposed at the bottom of the spring accumulator (2), and one end of the rotating arm is disposed on the fixed plate (4).

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