Plateau type indoor vacuum circuit breaker

Abstract

The utility model relates to a plateau type indoor vacuum circuit breaker which is characterized in that the plateau type indoor vacuum circuit breaker comprises a mechanism frame and a solid-sealed polar pole arranged on the mechanism frame, the solid-sealed polar pole is provided with an upper contact arm and a lower contact arm, and the upper contact arm and the lower contact arm are connected with a tulip contact. The tulip contact comprises a clamping ring, a fixing ring and contact blades distributed in the clamping ring, a clamping groove is formed in the clamping ring, a first opening hole is formed in the position, at the clamping groove, of the inner wall of the clamping ring, a second opening hole is formed in the upper surface of the tulip contact, and a spring is arranged between the first opening hole and the second opening hole. According to the utility model, double springs are adopted to cooperatively pressurize, two-way compression of the contact blade is realized through the radial springs in the first open hole and the second open hole and the axial fastening spring ring in the concave groove, and the contact pressure distribution is more uniform.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically to a high-altitude indoor vacuum circuit breaker. Background Technology

[0002] Traditional vacuum circuit breakers operating at high altitudes (≥2000m) are prone to problems such as contact oxidation, increased contact resistance, and insufficient heat dissipation due to environmental factors such as low air pressure, strong ultraviolet radiation, and large diurnal temperature variations. This can lead to abnormal temperature rise and even equipment failure. Existing sprite-shaped contacts mostly use a single-spring structure, resulting in uneven contact pressure distribution. After long-term use, elasticity is prone to decay, and the contact material lacks sufficient corrosion resistance, making it difficult to meet the requirements of high-altitude environments. Summary of the Invention

[0003] The purpose of this invention is to provide an outdoor vacuum circuit breaker suitable for high-altitude environments. By improving the spring layout of the plum blossom contacts and the contact sheet material, the invention enhances the uniformity of contact pressure, oxidation resistance, and heat dissipation efficiency, thereby solving the reliability problem under high-altitude operating conditions.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A high-altitude indoor vacuum circuit breaker, characterized in that it includes a mechanism frame and a solid-sealed pole disposed on the mechanism frame. The solid-sealed pole is provided with an upper contact arm and a lower contact arm. The upper contact arm and the lower contact arm are connected to a stylus contact. The stylus contact includes a retaining ring, a fixing ring, and contact pieces distributed within the retaining ring. A retaining groove is formed on the retaining ring. A first opening is formed on the inner wall of the retaining ring at the position of the retaining groove. A second opening is formed on the upper surface of the stylus contact. A spring is disposed between the first opening and the second opening.

[0006] The present invention further provides that the plum blossom contact has a first recessed groove and a second recessed groove, and a fastening spring ring is provided in the first recessed groove and the second recessed groove.

[0007] The present invention further provides that the plum blossom contact has a third recessed groove and a fourth recessed groove, and a fastening spring ring is provided in the middle of the third recessed groove and the fourth recessed groove.

[0008] The present invention is further provided that the first recessed groove and the second recessed groove are located on one side of the retaining ring.

[0009] The present invention is further provided that the third recessed groove and the fourth recessed groove are located on the other side of the retaining ring.

[0010] In a further embodiment of this invention, the contact piece is made of beryllium bronze.

[0011] The beneficial effects of this utility model are:

[0012] This invention employs a dual-spring synergistic pressure application: through the radial springs in the first and second openings, and the axially fastening spring ring in the recessed groove, the contact piece is bidirectionally pressed, resulting in a more uniform distribution of contact pressure. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the plum blossom contact in an embodiment of this utility model.

[0015] Figure 3 This is a cross-sectional view of the plum blossom contact of an embodiment of this utility model.

[0016] Reference numerals: 10, Mechanism frame; 20, Sealing pole; 30, Upper contact arm; 40, Lower contact arm; 50, Plexicon contact; 501, Snap ring; 502, Fixing ring; 503, Contact piece; 504, Snap groove; 505, First opening; 506, Second opening; 507, Spring; 508, First recessed groove; 509, Second recessed groove; 510, Third recessed groove; 511, Fourth recessed groove; 512, Fastening spring ring; Detailed Implementation

[0017] The following will describe the implementation of this application in detail with reference to the embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0018] like Figures 1-3 As shown, this utility model is a high-altitude indoor vacuum circuit breaker, including a mechanism frame 10 and a solid-sealed pole 20 disposed on the mechanism frame 10. The solid-sealed pole 20 is provided with an upper contact arm 30 and a lower contact arm 40. The upper contact arm 30 and the lower contact arm 40 are connected to a stylus contact 50. The stylus contact 50 includes a retaining ring 501, a fixing ring 502, and contact pieces 503 distributed in the retaining ring 501. A retaining groove 504 is formed on the retaining ring 501. A first opening 505 is formed on the inner wall of the retaining ring 501 at the position of the retaining groove 504. A second opening 506 is opened on the upper surface of the stylus contact 50. A spring 507 is disposed between the first opening 505 and the second opening 506.

[0019] The present invention further provides that the plum blossom contact 50 has a first recessed groove 508 and a second recessed groove 509, and a fastening spring ring 512 is provided in the first recessed groove 508 and the second recessed groove 509.

[0020] The present invention further provides that the plum blossom contact 50 has a third recessed groove 510 and a fourth recessed groove 511, and a fastening spring ring 512 is provided in the middle of the third recessed groove 510 and the fourth recessed groove 511.

[0021] The present invention is further provided that the first recessed groove 508 and the second recessed groove 509 are located on one side of the retaining ring 501.

[0022] The present invention is further provided that the third recessed groove 510 and the fourth recessed groove 511 are located on the other side of the retaining ring 501.

[0023] In a further embodiment of this invention, the contact piece 503 is made of beryllium bronze.

[0024] The beneficial effects of this utility model are:

[0025] This utility model employs a dual-spring 507 synergistic pressure application: the radial springs 507 within the first opening 505 and the second opening 506, along with the axially fastening spring coil 512 within the recessed groove, achieve bidirectional pressing of the contact piece 503, resulting in a more uniform distribution of contact pressure.

[0026] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0027] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0028] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept by means of the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A high-altitude indoor vacuum circuit breaker, characterized in that, The device includes a mechanism frame and a fixed electrode post mounted on the mechanism frame. The fixed electrode post is provided with an upper contact arm and a lower contact arm. The upper contact arm and the lower contact arm are connected to a cloverleaf contact. The cloverleaf contact includes a retaining ring, a fixing ring, and contact pieces distributed within the retaining ring. A retaining groove is formed on the retaining ring. A first opening is formed on the inner wall of the retaining ring at the position of the retaining groove. A second opening is formed on the upper surface of the cloverleaf contact. A spring is provided between the first opening and the second opening.

2. The high-altitude indoor vacuum circuit breaker according to claim 1, characterized in that, The plum blossom contact has a first recessed groove and a second recessed groove, and a fastening spring ring is provided in the first recessed groove and the second recessed groove.

3. A high-altitude indoor vacuum circuit breaker according to claim 1, characterized in that, The plum blossom contact has a third recessed groove and a fourth recessed groove, and a fastening spring ring is provided in the third recessed groove and the fourth recessed groove.

4. A high-altitude indoor vacuum circuit breaker according to claim 2, characterized in that, The first and second recessed grooves are located on one side of the retaining ring.

5. A high-altitude indoor vacuum circuit breaker according to claim 3, characterized in that, The third and fourth recessed grooves are located on the other side of the retaining ring.

6. A high-altitude indoor vacuum circuit breaker according to claim 1, characterized in that, The contact piece is made of beryllium bronze.

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