A rotating drum-type moving contact isolation phase-commutation switch

Abstract

This utility model discloses a rotating drum-type isolating phase-changing switch with a moving contact, including a base plate, a rotating drum assembly, a stationary contact, a moving contact, an arc extinguisher, an insulating medium, a contact support, and a spring sheet. This utility model features a reasonable and simple structure, low production cost, convenient installation, and complete functionality. Through the coordinated operation of components such as the base plate, rotating drum assembly, sleeve, drum shell, and connecting block, the overall structure is stable. Furthermore, the rotating drum assembly is built into a specific structure, improving switch safety and reducing the risk of accidental contact. This utility model optimizes contact matching accuracy through the drum body, moving contact, and stationary contact within the rotating drum assembly, in conjunction with a contact pressure adjustment mechanism. This allows for precise control of the breaking angle and contact pressure, improving switch performance and lifespan.

Description

Technical Field

[0001] This utility model relates to the field of electrical switches, and in particular to a rotating drum-type moving contact isolation phase-changing switch. Background Technology

[0002] During the operation of electrical equipment, it is often necessary to isolate circuits and change the current phase sequence, and isolating phase-changing switches play a crucial role in this process. One type is the rotating drum-type isolating phase-changing switch, which uses the rotation of the drum to actuate the internal moving contact, causing the moving contact to make contact and separate from the stationary contact. This reliably enables the circuit to be connected, disconnected, and its phase sequence to be changed. In scenarios such as electrical control circuits in industrial production and partial switching links in power systems, it effectively ensures the normal start-up and shutdown of equipment and the switching between different operating modes, maintains the stability of power distribution and transmission, and ensures that various electrical equipment operates according to predetermined logic and requirements.

[0003] Some traditional isolating phase-changing switches have unreasonable rotating drum structure designs, and the layout of the moving contacts is difficult to adapt to complex operating conditions. This results in inaccurate contact between the moving and stationary contacts, making it difficult to stably control the breaking angle and contact pressure, thus affecting the electrical performance and service life of the switch. Furthermore, in terms of functional integration, most existing devices cannot efficiently and reliably complete isolation and phase-changing functions simultaneously in a single rotation. The phase switching sequence design is suboptimal, easily leading to phase short-circuit paths and posing significant safety hazards. Regarding arc extinguishing and insulation design, the selection and integration methods of existing internal arc extinguishers and insulating media in rotating drums are insufficient, failing to effectively cope with harsh operating conditions such as high voltage and high current, reducing the safety and reliability of the switch and restricting its application in more critical fields. Therefore, a rotating drum-type moving contact isolating phase-changing switch is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a rotating drum-type moving contact isolating phase-changing switch to solve the aforementioned problems. This addresses the shortcomings of some traditional isolating phase-changing switches, such as unreasonable rotating drum structure design, inadequate moving contact layout to adapt to complex operating conditions, insufficient precision in contact-stationary contact coordination, and difficulty in stable control of breaking angle and contact pressure, thus affecting the switch's electrical performance and service life. Furthermore, in terms of functional integration, most existing devices cannot efficiently and reliably complete isolation and phase-changing functions simultaneously in a single rotation. Poor phase switching sequence design can easily lead to phase short-circuit paths, posing significant safety hazards. Regarding arc extinguishing and insulation design, the selection and integration of existing rotating drum-type arc extinguishers and insulating media are insufficient, failing to effectively cope with harsh operating conditions such as high voltage and high current, reducing the switch's safety and reliability and hindering its application in more critical fields.

[0005] To address the aforementioned problems, this utility model provides a technical solution: a rotating drum-type moving contact isolating phase-changing switch, comprising a base plate, a rotating drum assembly, a stationary contact, a moving contact, an arc extinguisher, an insulating medium, a contact support, a spring sheet, a support column, a vertical column, a top plate, and a through hole; the ends of the support columns are fixedly connected to both ends of the top surface of the base plate, and the ends of the vertical columns are fixedly connected to both ends of the other top surface of the base plate; the ends of the vertical columns and support columns away from the base plate are fixedly connected to the bottom surface of the top plate; a through hole is provided on the top surface of the top plate; the rotating drum assembly is located above the base plate; the specific structure of the rotating drum assembly includes a sleeve, a drum shell, a connecting block, a handle, a rotating seat, a drum body, and a rotating shaft; the sleeve is fixedly connected to the bottom surface of the top plate. The bottom surface of the sleeve is fixedly connected to a drum shell, the bottom surface of the drum shell is fixedly connected to a connecting block, and the bottom surface of the connecting block is fixedly connected to a base plate. A rotating seat is connected to the connecting block via a rotating shaft, and a handle is fixedly connected to the rotating seat. A drum body is fixedly connected to the bottom end of the rotating seat. A moving contact is provided inside the drum body, and the moving contact is arranged in a spiral or multi-stage contact arrangement. A stationary contact is provided on the outside of the drum body, and the moving contact cooperates with the stationary contact. A contact pressure adjustment mechanism is provided between the moving contact and the stationary contact. An arc extinguisher is provided inside the rotating drum assembly. An insulating medium is filled inside the rotating drum assembly. The moving contact is mounted on the drum body via a contact bracket, and a spring plate is provided on the contact bracket.

[0006] Preferably, the arc extinguisher is a gas arc extinguishing structure.

[0007] Preferably, the insulating medium is a vacuum gas.

[0008] Preferably, the device also includes a contact pressure regulating mechanism, the specific structure of which includes an adjusting screw, an adjusting nut, a pressure spring, and a pressure sensor; one end of the adjusting screw is fixedly connected to the moving contact, and the other end of the adjusting screw passes through the drum body and is threadedly connected to the adjusting nut; the pressure spring is sleeved on the adjusting screw, one end of the pressure spring contacts the moving contact, and the other end of the pressure spring contacts the drum body; the pressure sensor is disposed on the contact surface between the moving contact and the stationary contact.

[0009] Preferably, the outer surface of the adjusting nut is provided with anti-slip texture.

[0010] Preferably, the pressure sensor is a high-precision pressure sensor.

[0011] The beneficial effects of this utility model are: (1) The present invention has a reasonable and simple structure, low production cost, convenient installation and complete functions. The overall structure is stable through the cooperation of the base plate, rotating drum assembly, sleeve, drum shell, connecting block and other components. The rotating drum assembly is built into a specific structure, which improves the safety of the switch and reduces the risk of accidental contact.

[0012] (2) This utility model optimizes the contact matching accuracy by setting the drum body, moving contact and stationary contact in the rotating drum assembly, and cooperating with the contact pressure adjustment mechanism. It can accurately control the breaking angle and contact pressure, and improve the switching performance and life.

[0013] (3) This utility model integrates phase switching and isolation functions with a single rotation by using the rotating drum assembly, rotating shaft, handle and preset mechanical linkage logic, optimizes the phase switching sequence, avoids short circuits and improves work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a partially enlarged view of the present invention.

[0016] Figure 3 This is a schematic diagram of the contact pressure regulating mechanism of this utility model.

[0017] 1-Base plate; 2-Rotating drum assembly; 3-Sleeve; 4-Drum shell; 5-Connecting block; 6-Handle; 7-Rotating seat; 8-Drum body; 9-Rotating shaft; 10-Static contact; 11-Moving contact; 12-Arc extinguisher; 13-Insulating medium; 14-Contact bracket; 15-Spring plate; 16-Support column; 17-Column; 18-Top plate; 19-Through hole one; 20-Contact pressure adjusting mechanism; 21-Adjusting screw; 22-Adjusting nut; 23-Pressure spring; 24-Pressure sensor. Detailed Implementation

[0018] like Figures 1 to 3As shown, this specific embodiment adopts the following technical solution: a rotating drum-type isolating phase-changing switch with moving contact, including a base plate 1, a rotating drum assembly 2, a stationary contact 10, a moving contact 11, an arc extinguisher 12, an insulating medium 13, a contact support 14, a spring sheet 15, a support column 16, a column 17, a top plate 18, and a through hole 19; the ends of the support columns 16 are fixedly connected to both ends of the top surface of the base plate 1, and the ends of the columns 17 are fixedly connected to both ends of the other top surface of the base plate 1; the ends of the columns 17 and 16 away from the base plate 1 are fixedly connected to the bottom surface of the top plate 18; the top surface of the top plate 18 has a through hole 19; the rotating drum assembly 2 is located above the base plate 1; the specific structure of the rotating drum assembly 2 includes a sleeve 3, a drum shell 4, a connecting block 5, a handle 6, a rotating seat 7, a drum body 8, and a rotating shaft 9; the bottom surface of the top plate 18 is fixedly connected to the sleeve. 3. A drum shell 4 is fixedly connected to the bottom surface of the sleeve 3. A connecting block 5 is fixedly connected to the bottom surface of the drum shell 4. The bottom surface of the connecting block 5 is fixedly connected to the base plate 1. A rotating seat 7 is connected to the connecting block 5 via a rotating shaft 9. A handle 6 is fixedly connected to the rotating seat 7. A drum body 8 is fixedly connected to the bottom end of the rotating seat 7. A moving contact 11 is provided inside the drum body 8. The moving contact 11 is spirally distributed or arranged in a multi-level contact pattern. A stationary contact 10 is provided on the outside of the drum body 8. The moving contact 11 cooperates with the stationary contact 10. A contact pressure adjustment mechanism 20 is provided between the moving contact 11 and the stationary contact 10. An arc extinguisher 12 is provided inside the rotating drum assembly 2. An insulating medium 13 is filled inside the rotating drum assembly 2. The moving contact 11 is mounted on the drum body 8 via a contact bracket 14. A spring plate 15 is provided on the contact bracket 14.

[0019] The arc extinguisher 12 is a gas arc extinguishing structure; the insulating medium 13 is a vacuum gas.

[0020] like Figures 1 to 3 As shown, it also includes a contact pressure regulating mechanism 20. The specific structure of the contact pressure regulating mechanism 20 is as follows: it includes an adjusting screw 21, an adjusting nut 22, a pressure spring 23, and a pressure sensor 24; one end of the adjusting screw 21 is fixedly connected to the moving contact 11, and the other end of the adjusting screw 21 passes through the drum body 8 and is threadedly connected to the adjusting nut 22; the pressure spring 23 is sleeved on the adjusting screw 21, one end of the pressure spring 23 contacts the moving contact 11, and the other end of the pressure spring 23 contacts the drum body 8; the pressure sensor 24 is disposed on the contact surface between the moving contact 11 and the stationary contact 10.

[0021] The outer surface of the adjusting nut 22 is provided with anti-slip texture; the pressure sensor 24 is a high-precision pressure sensor.

[0022] The utility model is used in the following way: The utility model has a reasonable and simple structure, low production cost, convenient installation, and complete functions. When in use, the operator first holds the handle 6 and turns it. The handle 6 drives the rotating shaft 9 to rotate. The rotating shaft 9 is connected to the rotating seat 7, which in turn causes the rotating seat 7 to drive the drum body 8 to rotate together.

[0023] During the rotation of the drum body 8, the moving contact 11 installed inside the drum body 8 rotates accordingly. When the moving contact 11 rotates to the position of contacting the stationary contact 10, the moving contact 11 connects with the stationary contact 10, thus completing the circuit. At this time, the contact support 14 supports the moving contact 11, and the spring plate 15 provides appropriate pressure to the moving contact 11 to ensure good contact.

[0024] When it is necessary to disconnect the circuit, continue to rotate the handle 6. The drum body 8 drives the moving contact 11 to rotate to the position where it is separated from the stationary contact 10, and the circuit is disconnected. During the contact and separation process between the moving contact 11 and the stationary contact 10, the arc extinguisher 12 plays a role in extinguishing the generated arc in time, while the insulating medium 13 ensures the insulation performance inside the rotating drum assembly.

[0025] To perform a phase switching operation, continuously rotate handle 6. The drum body 8 rotates according to the preset mechanical linkage logic and optimized phase switching sequence, thereby driving the moving contact 11 to accurately connect or disconnect with different stationary contacts 10, thus achieving phase switching. During this process, the sleeve 3, drum shell 4, connecting block 5, and other structures in the rotating drum assembly 2 ensure the stable operation of the rotating drum assembly 2.

[0026] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model, which is defined by the appended claims and their equivalents. The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

Claims

1. A rotating drum-type moving contact isolation phase-changing switch, characterized in that: It includes a base plate (1), a rotating drum assembly (2), a stationary contact (10), a moving contact (11), an arc extinguisher (12), an insulating medium (13), a contact support (14), a spring sheet (15), a support column (16), a column (17), a top plate (18), and a through hole (19). The top surfaces of the base plate (1) are fixedly connected to the ends of the support columns (16) at both ends, and the other two ends of the top surfaces of the base plate (1) are fixedly connected to the ends of the columns (17). The ends of the columns (17) and the support columns (16) away from the base plate (1) are fixedly connected to the bottom surface of the top plate (18). The top surface of the top plate (18) is provided with a through hole (19); The rotating drum assembly (2) is located above the base plate (1); The specific structure of the rotating drum assembly (2) is as follows: it includes a sleeve (3), a drum shell (4), a connecting block (5), a handle (6), a rotating seat (7), a drum body (8), and a rotating shaft (9). A sleeve (3) is fixedly connected to the bottom surface of the top plate (18), a drum shell (4) is fixedly connected to the bottom surface of the sleeve (3), a connecting block (5) is fixedly connected to the bottom surface of the drum shell (4), and the bottom surface of the connecting block (5) is fixedly connected to the bottom plate (1). A rotating seat (7) is connected to the connecting block (5) via a rotating shaft (9), and a handle (6) is fixedly connected to the rotating seat (7). A drum body (8) is fixedly connected to the bottom end of the rotating seat (7); The drum body (8) is provided with a moving contact (11) inside, and the moving contact (11) is spirally distributed or arranged with multiple levels of contact points; The outer side of the drum body (8) is provided with a stationary contact (10), the moving contact (11) cooperates with the stationary contact (10), and a contact pressure adjustment mechanism (20) is provided between the moving contact (11) and the stationary contact (10). An arc extinguisher (12) is provided inside the rotating drum assembly (2); The interior of the rotating drum assembly (2) is filled with an insulating medium (13). The moving contact (11) is mounted on the drum body (8) via a contact bracket (14), and a spring plate (15) is provided on the contact bracket (14).

2. The rotating drum internal moving contact type isolating phase-changing switch according to claim 1, characterized in that: The arc extinguisher (12) is a gas arc extinguishing structure.

3. The rotating drum internal moving contact type isolating phase-changing switch according to claim 1, characterized in that: The insulating medium (13) is a vacuum gas.

4. The rotating drum internal moving contact type isolating phase-changing switch according to claim 1, characterized in that: It also includes a contact pressure regulating mechanism (20), the specific structure of which includes an adjusting screw (21), an adjusting nut (22), a pressure spring (23) and a pressure sensor (24). One end of the adjusting screw (21) is fixedly connected to the moving contact (11), and the other end of the adjusting screw (21) passes through the drum body (8) and is threadedly connected to the adjusting nut (22); The pressure spring (23) is sleeved on the adjusting screw (21), one end of the pressure spring (23) is in contact with the moving contact (11), and the other end of the pressure spring (23) is in contact with the drum body (8); The pressure sensor (24) is disposed on the contact surface between the moving contact (11) and the stationary contact (10).

5. The rotating drum internal moving contact type isolating phase-changing switch according to claim 4, characterized in that: The outer surface of the adjusting nut (22) is provided with anti-slip texture.

6. The rotating drum internal moving contact type isolating phase-changing switch according to claim 4, characterized in that: The pressure sensor (24) is a high-precision pressure sensor.

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