Assembly type static contact

Abstract

The utility model relates to the technical field of static contacts, and discloses an assembly type static contact, which adopts a split assembly type structural arrangement, a contact support, a pair contact cylinder and an insulating cylinder sleeve are arranged as split independent structural components, and are positioned, assembled and installed through a notch structure, the structure is simple, the installation is convenient, and the assembly type static contact is convenient to assemble and disassemble. The contact cylinder is mounted at the end part of the contact support through embedding and positioning of the slotted hole and fastening and limiting of the fastening bolt, the disassembly and assembly operation is convenient, the contact cylinder can be conveniently, quickly and independently disassembled during maintenance and replacement, the replacement and maintenance convenience and the replacement economy of the device can be effectively improved, and the service life of the device is prolonged. The contact cylinder and the contact support are connected and installed through the annular semi-arc-shaped notch structure, the installation contact area between component structures can be effectively increased through the semi-arc-shaped notch, the structure installation resistance between the contact cylinder and the contact support can be effectively reduced, and the heat dissipation conduction area between the contact support and the insulating cylinder sleeve can be increased. And the working stability of the contact is improved.

Description

Technical Field

[0001] This utility model relates to the field of stationary contact technology, specifically to an assembled stationary contact. Background Technology

[0002] Circuit breakers are frequently used in the field of high-voltage power transmission. When a circuit breaker is working, it mainly achieves the opening and closing of the circuit breaker by the opening and closing of the moving and stationary contacts in the arc-extinguishing chamber. The contact structure is a key component of the high-voltage switch. The connection and disconnection of the high-voltage switch depends on it. Its service life determines the service life of the high-voltage switch, and thus determines the safe operation of the high-voltage power transmission and transformation network. The contact structure includes two sets of contact structures: moving and stationary. The stationary contact refers to the contact whose position remains basically unchanged during operation. It works by connecting with the moving contact to achieve the working connection of the circuit. It is an important working structure in the circuit breaker.

[0003] In terms of structure, most existing stationary contacts are integrated structures, with the contact mating structure and the support structure installed together. Due to the huge voltage, a transient overvoltage will be generated when the contact is closed. This transient overvoltage will cause certain structural damage to the contact mating part. In order to ensure the stability of the power system, the contact structure needs to be replaced and maintained regularly. Due to the fixed structure, the support structure must be disassembled and replaced together when the contact structure is replaced, which is costly. Therefore, an assembled stationary contact is proposed. Utility Model Content

[0004] The purpose of this invention is to provide an assembled static contact to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an assembled static contact, comprising: a contact support, a contact cylinder, an insulating sleeve, a protective ring seat, and fastening bolts, wherein the front part of the contact support is provided with a contact cylinder mounting slot, and the contact cylinder is fastened and fitted into the inner side of the contact cylinder mounting slot by fastening bolts;

[0006] The insulating sleeve has a support mounting slot in the middle. The rear part of the contact support is fitted into the inner side of the support mounting slot. The rear part of the contact support has a threaded end post. The protective ring seat is fitted onto the upper part of the threaded end post.

[0007] Preferably, the front part of the contact support is provided with a mounting cylinder seat, the contact cylinder mounting slot is opened in the middle of the end side of the mounting cylinder seat, and the rear outer periphery of the contact cylinder is uniformly provided with fitting protrusions in a circular shape. The fitting protrusions are semi-circular, and after installation, the fitting protrusions are aligned and fitted with the grooves in the contact cylinder mounting slot.

[0008] Preferably, the contact support has a mating hole at the center of its front side, and the rear of the mating hole is a micro-reduction opening.

[0009] Preferably, a fastening screw hole is provided on the inner rear part of the above-mentioned contact cylinder mounting slot. The end of the fastening bolt passes through the contact cylinder and is threadedly fastened to the fastening screw hole. The nut of the fastening bolt is fitted into the groove in the mating hole.

[0010] Preferably, the insulating sleeve is cylindrical, and heat dissipation grooves are uniformly provided on the outer periphery of the insulating sleeve.

[0011] Preferably, the mounting slot of the support is opened in the middle of the insulating sleeve, and the outer periphery of the end post of the contact support is uniformly provided with mounting protrusions in a circular shape. The mounting protrusions are semi-circular, and after installation, the mounting protrusions are aligned and fitted into the grooves in the mounting slot of the support.

[0012] Preferably, the threaded end post is fixedly installed at the rear end of the contact support, and the rear end of the threaded end post is movably inserted into the round hole provided at the rear of the mounting slot of the support, and the protective ring seat is fitted and connected to the rear end of the threaded end post.

[0013] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0014] This stationary contact adopts a split assembly structure, with the contact support, contact cylinder, and insulating sleeve as separate independent structural components. They are positioned and assembled using a slotted structure, resulting in a simple structure and convenient installation. The contact cylinder is positioned and fastened to the end of the contact support via a slotted hole and secured by bolts, facilitating easy disassembly and replacement. During maintenance and replacement, the contact cylinder can be easily and quickly disassembled independently, effectively improving the convenience and economy of replacement and maintenance. Furthermore, the annular semi-circular slot structure connects the contact cylinder and contact support, effectively increasing the installation contact area between the components. This reduces the structural installation resistance between the contact cylinder and contact support and increases the heat dissipation area between the contact support and insulating sleeve, contributing to improved contact operational stability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1This is a three-dimensional structural diagram of the overall installation front side of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention after installation;

[0018] Figure 3 This is a schematic diagram of the front structure of the entire disassembled assembly of this utility model;

[0019] Figure 4 This is a schematic diagram of the overall disassembled and assembled rear structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the overall installation mid-section structure of this utility model.

[0021] Explanation of reference numerals in the attached diagram: 1. Contact support; 2. Contact cylinder; 3. Insulating sleeve; 4. Protective ring seat; 5. Fastening bolt; 6. Threaded end post; 7. Butt socket. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce. Example

[0024] Please see Figure 1-5 This utility model provides a technical solution: an assembled static contact, comprising: a contact support 1, a contact cylinder 2, an insulating sleeve 3, a protective ring seat 4, and fastening bolts 5. Both the contact support 1 and the contact cylinder 2 can be made of copper with good electrical conductivity, as shown in the attached figure. Figure 3 As shown, the contact support 1, the contact cylinder 2, and the insulating sleeve 3 are all separate, independent structural components. They are positioned and assembled using a slotted structure, making the structure simple and easy to install.

[0025] As attached Figure 3As shown, to facilitate the docking and installation of the contact cylinder 2, a mounting cylinder seat is provided at the front of the contact support 1. To facilitate the alignment and connection of the contact cylinder 2, a contact cylinder mounting slot is provided at the front of the contact support 1. The contact cylinder mounting slot is located at the middle of the end side of the mounting cylinder seat. To fit into the contact cylinder mounting slot, a semi-circular fitting protrusion is uniformly provided on the outer circumference of the rear part of the contact cylinder 2. After installation, the fitting protrusion is aligned and fitted into the groove in the contact cylinder mounting slot. The semi-circular groove can effectively increase the installation contact area between the component structures, effectively reduce the structural installation resistance between the contact cylinder 2 and the contact support 1, and reduce the heat generated during operation.

[0026] For easy installation and connection with the moving contact, see attached... Figure 5 As shown, a mating hole 7 is provided in the middle of the front side of the contact support 1. In order to improve the tightness of the mating with the moving contact, the rear part of the mating hole 7 is set with a micro-reduction opening. The contact cylinder 2 is fastened and fitted into the inner side of the contact cylinder mounting slot by the fastening bolt 5. Specifically, a fastening screw hole is provided in the rear inner side of the contact cylinder mounting slot. The end of the fastening bolt 5 passes through the contact cylinder 2 and is fastened to the fastening screw hole by thread, so as to realize the installation lock limit of the contact cylinder 2 after installation. The contact cylinder 2 is installed at the end of the contact support 1 by fitting into the slot and cooperating with the fastening bolt 5 for fastening limit. The disassembly and assembly operation is convenient. During maintenance and replacement, the contact cylinder 2 can be easily and quickly disassembled independently, which can effectively improve the convenience and economy of device replacement and maintenance. After installation, the nut part of the fastening bolt 5 is fitted into the groove in the mating hole 7, which can avoid the pressure contact with the moving contact.

[0027] Insulating sleeve 3 is a cylindrical ceramic sleeve, as shown in the attached document. Figure 3 As shown, the mounting slot of the support is opened in the middle of the insulating sleeve 3. In order to fit into the mounting slot of the support, mounting protrusions are uniformly arranged in a circular shape on the outer periphery of the end post of the contact support 1. The mounting protrusions are semi-circular. After installation, the mounting protrusions are aligned and fitted into the groove in the mounting slot of the support. The semi-circular groove can effectively increase the installation contact area between the component structures, and can effectively increase the heat dissipation conduction area between the contact support 1 and the insulating sleeve 3, so as to achieve efficient heat dissipation of the contact support 1. In order to further improve the heat dissipation of the insulating sleeve 3, heat dissipation ring grooves are uniformly arranged on the outer periphery of the insulating sleeve 3.

[0028] For connection and installation with the circuit support, see attached... Figure 2As shown, the threaded end post 6 is fixedly installed at the rear end of the contact support 1. The rear end of the threaded end post 6 is movably inserted into the round hole provided at the rear of the mounting slot of the support. The protective ring seat 4 is made of heat-resistant rubber. The protective ring seat 4 is fitted and connected to the rear end of the threaded end post 6. The threaded end post 6 is fastened to the hole on the upper part of the transformer equipment support. After installation, the contact support 1 and the insulating sleeve 3 are locked and fixed by the contacting and pressing of the protective ring seat 4.

[0029] The working principle or structural principle is as follows: During installation, the contact cylinder 2 is first installed inside the contact cylinder mounting slot at the front of the contact support 1 by alignment and fitting. Then, the installed contact cylinder 2 is secured and locked by the fastening bolts 5. After completion, the contact support 1 is aligned and inserted into the support mounting slot in the middle of the insulating sleeve 3. The protective ring seat 4 is fitted onto the upper part of the threaded end post 6 at the rear of the contact support 1. Then, the threaded end post 6 is tightened to the hole at the upper part of the transformer equipment support by screwing. After installation, the contact support 1 and the insulating sleeve 3 are locked and fixed by the contacting and pressing of the protective ring seat 4. The installation operation is completed. During operation, the end post of the moving contact faces the contact cylinder 2. When the moving contact moves and closes, the end post of the moving contact is aligned and inserted into the mating hole 7 in the middle of the contact cylinder 2. The power supply connection of the circuit is completed through the contact. The semi-arc slot can effectively increase the installation contact area between the component structures, effectively reduce the structural installation resistance between the contact cylinder 2 and the contact support 1, and increase the heat dissipation conduction area between the contact support 1 and the insulating sleeve 3. The heat dissipation ring groove on the upper part of the insulating sleeve 3 can efficiently complete the heat dissipation of the device. When the contact cylinder 2 is damaged, it can be removed by unscrewing the fastening bolt 5 in the power-off installation state. Then, a brand new contact cylinder 2 can be replaced and the fastening bolt 5 can be retightened to complete the replacement operation of the contact cylinder 2.

[0030] In summary, this stationary contact adopts a split assembly structure, with the contact support 1, the contact cylinder 2, and the insulating sleeve 3 as separate independent structural components. They are positioned and assembled using a slotted structure, resulting in a simple structure and convenient installation. The contact cylinder 2 is positioned and fastened to the end of the contact support 1 via a slotted hole and secured by the fastening bolt 5, facilitating easy disassembly and replacement. During maintenance and replacement, the contact cylinder 2 can be easily and quickly disassembled independently, effectively improving the convenience and economy of replacement and maintenance. Furthermore, the annular semi-circular slot structure connects the contact cylinder 2 and the contact support 1, effectively increasing the installation contact area between the components. This reduces the structural installation resistance between the contact cylinder 2 and the contact support 1 and increases the heat dissipation area between the contact support 1 and the insulating sleeve 3, thus improving the working stability of the contact.

[0031] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. An assembled stationary contact, characterized in that, include: The contact support (1), the contact cylinder (2), the insulating sleeve (3), the protective ring seat (4), and the fastening bolt (5) are provided. The front part of the contact support (1) is provided with a contact cylinder mounting slot. The contact cylinder (2) is fastened and fitted into the inner side of the contact cylinder mounting slot by the fastening bolt (5). The insulating sleeve (3) has a support mounting slot in the middle. The rear part of the contact support (1) is fitted and inserted into the inner side of the support mounting slot. The rear part of the contact support (1) has a threaded end post (6). The protective ring seat (4) is fitted onto the upper part of the threaded end post (6).

2. The assembled stationary contact according to claim 1, characterized in that: The front part of the contact support (1) is provided with a mounting cylinder seat. The contact cylinder mounting slot is opened in the middle of the end side of the mounting cylinder seat. The rear outer periphery of the contact cylinder (2) is uniformly provided with a circumferentially shaped fitting protrusion. The fitting protrusion is semi-circular. After installation, the fitting protrusion is aligned and fitted with the groove in the contact cylinder mounting slot.

3. The assembled stationary contact according to claim 2, characterized in that: The contact support (1) has a docking hole (7) at the front center, and the rear of the docking hole (7) is a micro-reduction opening.

4. The assembled stationary contact according to claim 3, characterized in that: The inner rear part of the mounting slot of the contact cylinder is provided with a fastening screw hole. The end of the fastening bolt (5) passes through the contact cylinder (2) and is threadedly fastened to the fastening screw hole. The nut part of the fastening bolt (5) is fitted into the groove in the mating hole (7).

5. The assembled stationary contact according to claim 1, characterized in that: The insulating sleeve (3) is cylindrical, and heat dissipation ring grooves are uniformly arranged on the outer periphery of the insulating sleeve (3).

6. The assembled stationary contact according to claim 5, characterized in that: The mounting slot of the support is opened in the middle of the insulating sleeve (3). The outer periphery of the end post of the contact support (1) is uniformly provided with mounting protrusions in a circular shape. The mounting protrusions are semi-circular. After installation, the mounting protrusions are aligned and fitted into the grooves in the mounting slot of the support.

7. The assembled stationary contact according to claim 6, characterized in that: The threaded end post (6) is fixedly installed at the rear end of the contact support (1). The rear end of the threaded end post (6) is movably inserted into the round hole provided at the rear of the support mounting slot. The protective ring seat (4) is fitted and connected to the rear end of the threaded end post (6).

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