Novel horizontally-arranged 40.5 kVsf6 circuit breaker

Abstract

The utility model belongs to the technical field of circuit breakers, and discloses a novel horizontally-arranged 40.5 kVsf6 circuit breaker, which comprises a mounting plate serving as a supporting foundation, and a dynamic sealing mechanism is mounted in the center of the mounting plate. The right end of the dynamic sealing mechanism is connected with the transmission mechanism, the transmission mechanism is fixed through a mounting plate, and the input end of the transmission mechanism is connected with the power input mechanism; the left end of the dynamic sealing mechanism is connected with an insulating pull rod, and the other end of the insulating pull rod is connected with a moving contact through a supporting seat. The left side of the mounting plate is connected with the insulating cylinder, the moving contact, the supporting seat and the insulating pull rod are located in the insulating cylinder, the inside of the insulating cylinder is also connected with the static contact, and the moving contact realizes contact and disconnection with the static contact under the action of the insulating pull rod. The circuit breaker is reasonable and compact in element arrangement, long in service life and free of maintenance, and has the advantages of being high in breaking capacity and arc extinguishing capacity and large in breaking capacitive current.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit breakers, and in particular relates to a novel horizontally arranged 40.5kVsf6 circuit breaker. Background Art

[0002] With the rapid development of the country's economy, the demand for electricity is increasing, and power equipment is everywhere. Vacuum circuit breakers have problems such as insufficient breaking capacity and poor arc extinguishing ability, especially under the condition of large capacitive current breaking. Gas-insulated enclosed switchgear is more and more widely used due to its high adaptability and maintenance-free advantages. Therefore, a new horizontally arranged 40.5kVsf6 circuit breaker is provided to solve the problems of insufficient breaking capacity and poor arc extinguishing ability of conventional vacuum circuit breakers. Utility Model Content

[0003] In view of the problems raised by the above background technology, the purpose of the utility model is to provide a new type of horizontally arranged 40.5kVsf6 circuit breaker.

[0004] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0005] A novel horizontally arranged 40.5kVsf6 circuit breaker includes a mounting plate as a supporting base,

[0006] A dynamic sealing mechanism is installed at the center of the mounting plate;

[0007] The right end of the dynamic sealing mechanism is connected to the transmission mechanism, the transmission mechanism is fixed by a mounting plate, and the input end of the transmission mechanism is connected to the power input mechanism;

[0008] The left end of the dynamic sealing mechanism is connected to the insulating pull rod, and the other end of the insulating pull rod is connected to the moving contact through a support seat;

[0009] The left side of the mounting plate is connected to an insulating cylinder, the moving contact, the support seat, and the insulating pull rod are located inside the insulating cylinder, and the interior of the insulating cylinder is also connected to a static contact. The moving contact is in contact with and disconnected from the static contact under the action of the insulating pull rod.

[0010] It is further defined that a pressure relief mechanism is installed on the peripheral wall of the insulating cylinder. With such a structural design, the gas medium in the insulating cylinder is released through the pressure relief mechanism.

[0011] It is further defined that the mounting plate is provided with an air inlet hole, and the air inlet hole is connected to an air charging mechanism via an air pipe. With such a structural design, a gas medium is injected into the insulating cylinder via the air charging mechanism.

[0012] It is further defined that an adsorbent box is arranged inside the insulating cylinder. With such a structural design, the adsorbent box absorbs moisture in the insulating cylinder to improve safety. The adsorbent box can use active alumina material for adsorption.

[0013] The beneficial effects of the utility model are as follows: the components are reasonably and compactly arranged, have a long service life, are maintenance-free, and have the characteristics of strong breaking capacity, strong arc extinguishing capacity, and large breaking capacitive current. Specifically, the opening and closing operations are as follows: the power of the power input mechanism is transmitted to the moving contact through the transmission mechanism, the dynamic sealing mechanism, the insulating pull rod, and the support seat, and converted into precise linear motion of the moving contact. The movement of the moving contact can achieve contact and disconnection with the static contact. The support seat cooperates with the 40.5kV insulating cylinder, which supports the moving contact while taking into account the current-passing function. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0015] Figure 1 This is a schematic diagram of the external structure of a novel horizontally arranged 40.5kVsf6 circuit breaker embodiment of the utility model;

[0016] Figure 2 This is a view of a novel horizontally arranged 40.5kVsf6 circuit breaker embodiment of the utility model, in which the insulation cylinder is removed and the internal structure is exposed;

[0017] The main component symbols are described as follows:

[0018] 1. Static contact;

[0019] 2. Insulation tube;

[0020] 3. Moving contact;

[0021] 4. Support seat;

[0022] 5. Insulated pull rod;

[0023] 6. Adsorbent box;

[0024] 7. Mounting plate;

[0025] 8. Dynamic sealing mechanism;

[0026] 9. Pressure relief mechanism;

[0027] 10. Inflatable mechanism;

[0028] 11. Transmission mechanism;

[0029] 12. Power input mechanism. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0031] like Figure 1-2 As shown, a novel horizontally arranged 40.5kVsf6 circuit breaker of the utility model comprises a mounting plate 7 as a supporting base,

[0032] A dynamic sealing mechanism 8 is installed at the center of the mounting plate 7;

[0033] The right end of the dynamic sealing mechanism 8 is connected to the transmission mechanism 11, the transmission mechanism 11 is fixed by the mounting plate 7, and the input end of the transmission mechanism 11 is connected to the power input mechanism 12;

[0034] The left end of the dynamic sealing mechanism 8 is connected to the insulating pull rod 5, and the other end of the insulating pull rod 5 is connected to the moving contact 3 through the support seat 4;

[0035] The left side of the mounting plate 7 is connected to the insulating cylinder 2, and the moving contact 3, the supporting seat 4, and the insulating pull rod 5 are located inside the insulating cylinder 2. The interior of the insulating cylinder 2 is also connected to the static contact 1. Under the action of the insulating pull rod 5, the moving contact 3 can achieve contact and disconnection with the static contact 1.

[0036] In this embodiment:

[0037] In actual production applications, a new type of horizontally arranged 40.5kVsf6 circuit breaker of the utility model has a rated current of 2500A and has a breaking capacity of breaking a rated short-circuit current of 31.5kA and a breaking capacitive current of 1200A;

[0038] The power input mechanism 12, the transmission mechanism 11 and the insulating cylinder 2 are fixed on the same mounting plate 7, with high precision and easy adjustment. The opening and closing operations are as follows: the power transmitted to the power input mechanism 12 by the external power source is transmitted to the moving contact 3 through the transmission mechanism 11, the dynamic sealing mechanism 8, the insulating pull rod 5 and the support seat 4, and is converted into a precise linear motion of the moving contact 3. The movement of the moving contact 3 can realize contact and disconnection with the static contact 1;

[0039] The insulating cylinder 2 is of 40.5kV specification, and the dynamic sealing mechanism 8 plays the role of sealing and transmission. The support seat 4 cooperates with the 40.5kV insulating cylinder 2, which supports the moving contact 3 and takes into account the current passing function;

[0040] In summary, the components of the utility model are reasonably and compactly arranged, have a long service life, are maintenance-free, and have the characteristics of strong breaking capacity, strong arc extinguishing ability, and large breaking capacitive current.

[0041] Preferably, a pressure relief mechanism 9 is installed on the peripheral wall of the insulating tube 2. With this structural design, the gas medium in the insulating tube 2 is released through the pressure relief mechanism 9. In fact, other structures for discharging the gas medium in the insulating tube 2 can also be considered according to specific circumstances.

[0042] Preferably, the mounting plate 7 is provided with an air inlet hole, which is connected to the inflation mechanism 10 through an air pipe. With this structural design, the gas medium is injected into the insulation tube 2 through the inflation mechanism 10. In fact, other structural shapes for injecting the gas medium into the insulation tube 2 can also be considered according to specific circumstances.

[0043] Preferably, an adsorbent box 6 is provided inside the insulating cylinder 2. With this structural design, the adsorbent box 6 absorbs the moisture in the insulating cylinder 2 to improve safety. The adsorbent box 6 can be made of active alumina material for adsorption. In fact, other structural shapes for adsorbing moisture can also be considered according to specific circumstances.

[0044] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A new type of horizontally arranged 40.5kVsf6 circuit breaker, characterized by: It comprises a mounting plate (7) as a supporting base, and a dynamic sealing mechanism (8) is mounted at the center of the mounting plate (7); The right end of the dynamic sealing mechanism (8) is connected to a transmission mechanism (11), the transmission mechanism (11) is fixed by a mounting plate (7), and the input end of the transmission mechanism (11) is connected to a power input mechanism (12); The left end of the dynamic sealing mechanism (8) is connected to the insulating pull rod (5), and the other end of the insulating pull rod (5) is connected to the moving contact (3) via a support seat (4); The left side of the mounting plate (7) is connected to the insulating cylinder (2); the moving contact (3), the support seat (4), and the insulating pull rod (5) are located inside the insulating cylinder (2); the interior of the insulating cylinder (2) is also connected to the static contact (1); and the moving contact (3) is brought into contact with and disconnected from the static contact (1) under the action of the insulating pull rod (5).

2. A novel horizontally arranged 40.5kVsf6 circuit breaker according to claim 1, characterized in that: A pressure relief mechanism (9) is installed on the peripheral wall of the insulating cylinder (2).

3. A novel horizontally arranged 40.5kVsf6 circuit breaker according to claim 2, characterized in that: The mounting plate (7) is provided with an air inlet hole, and the air inlet hole is connected to the inflation mechanism (10) via an air pipe.

4. A novel horizontally arranged 40.5kVsf6 circuit breaker according to claim 3, characterized in that: An adsorbent box (6) is arranged inside the insulating cylinder (2).

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