Conductive structure of 252kV isolating switch

Abstract

The invention belongs to the technical field of GIS disconnecting switches, and particularly relates to a 252kV disconnecting switch conductive structure which comprises a combined electric appliance main body and further comprises connecting structures symmetrically arranged in the combined electric appliance main body, one end of one connecting structure is fixedly connected with an insulating spacer, a static terminal is installed in the insulating spacer, and the other end of the connecting structure is fixedly connected with a grounding terminal. The insulating basins are symmetrically mounted on the surface of the other connecting structure, the inner surfaces of the insulating basins are slidably connected with moving terminals, and the moving terminals are slidably connected with the connecting structures; according to the device, opening and closing are facilitated through the connecting rod assembly, and the limiting assembly is arranged, so that a worker can limit and fix the insulating handle after closing, and therefore, the situation that the working efficiency is affected due to non-reason opening caused by mistaken touch, and electric arcs or equipment damage are possibly caused is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of GIS disconnectors, and in particular relates to a conductive structure of a 252kV disconnector. Background Art

[0002] In modern power systems, 252kV gas-insulated metal-enclosed switchgear (GIS) is widely used. The conductive structure of the 252kV disconnector is the core component of the high-voltage disconnector, specifically designed for 252kV power systems. Its main purpose is to achieve safe circuit isolation without load current, providing a visible breakpoint for maintenance of transmission lines or electrical equipment, and ensuring the safety of maintenance personnel. By optimizing the contact material, contact pressure, and conductive circuit design, this structure ensures low contact resistance, high current-carrying stability, and short-circuit current resistance during opening and closing. At the same time, it must meet the stringent operating conditions of outdoor environments, such as corrosion resistance and dustproofing. As a key component of the GIS, the disconnector undertakes important tasks such as isolating the circuit and ensuring maintenance safety. However, the existing 252kV disconnector conductive structure has some problems that need to be solved.

[0003] Most insulated handles in existing technologies rely on manual operation and lack a mechanical error prevention mechanism. This can easily lead to accidental opening and closing of the switch due to operator errors (such as blind single-handed operation or non-standard procedures), potentially causing arcing or equipment damage.

[0004] Therefore, a 252kV disconnector conductive structure is designed to solve the above problems. Summary of the Invention

[0005] To address the problems raised in the above background technology, the present invention provides a 252kV disconnector conductive structure. This device facilitates opening and closing of the switch through a connecting rod assembly, and further provides a limit assembly so that the operator can limit and fix the insulating handle after closing the switch, thereby avoiding accidental opening caused by accidental touch, which may cause arcing or equipment damage, affecting work efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a 252kV disconnector conductive structure, comprising a combination electrical appliance body, and also comprising connection structures symmetrically disposed within the combination electrical appliance body, wherein one end of one of the connection structures is fixedly connected to an insulating basin, a static terminal being mounted within the insulating basin, and the surface of the other connection structure is symmetrically mounted with the insulating basin, a movable terminal being slidably connected to the inner surface of the insulating basin, and the movable terminal is slidably connected to the connection structure;

[0007] A connecting rod assembly, wherein the end of the movable terminal away from the static terminal is symmetrically fixedly connected to a clamping block, the surface of the clamping block is rotatably connected to a connecting rod, the end of the clamping block away from the movable terminal is rotatably connected to a connecting arm, the end of the connecting arm away from the connecting rod is fixedly connected to a rotating shaft, the surface of the rotating shaft is rotatably connected to a box, the box is fixedly connected to the main body of the combination electrical appliance, and the surface of the rotating shaft is fixedly connected to an insulating handle;

[0008] A limiting component, wherein a connecting piece is fixedly connected to the surface of the insulating handle.

[0009] As a preferred conductive structure of the 252kV disconnector of the present invention, a rod is slidably connected to the surface of the connector, one end of the rod is slidably connected to a limit block, and the limit block is fixedly connected to the box.

[0010] As a preferred conductive structure of the 252kV disconnector of the present invention, the diameter of the end of the rod away from the limit block is larger than the diameter of the opening of the connecting piece adapted to the rod.

[0011] As a preferred conductive structure of the 252kV disconnector of the present invention, a cross bar is fixedly connected to the surface of the plug rod, a limit spring is provided between the cross bar and the connecting piece, and the limit spring is sleeved on the surface of the plug rod.

[0012] As a preferred conductive structure of the 252kV disconnector of the present invention, the connecting ends of the static terminal and the movable terminal are both made of a copper alloy material with high conductivity, and the contact surfaces are silver-plated.

[0013] As a preferred conductive structure of the 252kV disconnector of the present invention, the rod portion of the movable terminal is a hollow tubular structure, the interior of which is filled with an insulating material with high thermal conductivity.

[0014] As a preferred conductive structure of the 252kV disconnector of the present invention, a heat sink is provided on the surface of the rod portion of the movable terminal.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] By combining the connection structure in the electrical body, the insulating basin, static terminal and dynamic terminal are connected and installed with each other, and the four-bar linkage composed of the clamping block, connecting rod, connecting arm and rotating shaft is used to realize the smooth opening and closing operation of the dynamic terminal. The insulating handle is used to manually control the rotation of the rotating shaft. Compared with the traditional direct-acting structure, the connecting rod assembly can provide more stable operating force transmission, reduce the impact force at the moment of contact, and reduce wear. The design of the insulating handle and the rotating shaft ensures that the operator is effectively isolated from the live parts, and has better safety. A connecting piece is provided on the insulating handle so that the plug rod can slide on the connecting piece. The insulating handle is limited by the connecting piece to avoid accidental touch and unintentional opening, which may cause arc or equipment damage and affect work efficiency. The insulating handle is then locked in position by cooperating with the plug rod and the limit block, which can further increase its limiting effect. The plug rod diameter change design can prevent it from completely detaching from the connecting piece, and the cross bar and limit spring provide elastic reset function. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 Schematic diagram of the structure of the clamping block in the present invention;

[0020] Figure 3 Schematic diagram of the structure of the connecting rod in the present invention;

[0021] Figure 4 Schematic diagram of the structure of the limit spring in the present invention;

[0022] In the picture:

[0023] 1. Combination electrical appliance body; 2. Connection structure; 3. Insulation basin; 4. Static terminal; 5. Moving terminal;

[0024] 6. Connecting rod assembly; 601. Clamping block; 602. Connecting rod; 603. Box; 604. Connecting arm; 605. Rotating shaft; 606. Insulated handle;

[0025] 7. Limiting assembly; 701. Connecting piece; 702. Insertion rod; 703. Limiting block; 704. Cross bar; 705. Limiting spring. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example:

[0028] like Figures 1 to 4 As shown: A 252kV disconnector conductive structure includes a combination electrical appliance body 1 and connection structures 2 symmetrically arranged inside the combination electrical appliance body 1. One end of one connection structure 2 is fixedly connected to an insulating basin 3, and a static terminal 4 is installed inside the insulating basin 3. The surface of the other connection structure 2 is symmetrically mounted with an insulating basin 3, and a movable terminal 5 is slidably connected to the inner surface of the insulating basin 3. The movable terminal 5 is slidably connected to the connection structure 2.

[0029] Connecting rod assembly 6, the end of the movable terminal 5 away from the static terminal 4 is symmetrically fixedly connected to a clamping block 601, the surface of the clamping block 601 is rotatably connected to the connecting rod 602, the end of the clamping block 601 away from the movable terminal 5 is rotatably connected to a connecting arm 604, the end of the connecting arm 604 away from the connecting rod 602 is fixedly connected to a rotating shaft 605, the surface of the rotating shaft 605 is rotatably connected to a box 603, the box 603 is fixedly connected to the combination electrical appliance body 1, and the surface of the rotating shaft 605 is fixedly connected to an insulating handle 606;

[0030] The limiting component 7, a connecting piece 701 is fixedly connected to the surface of the insulating handle 606.

[0031] The surface of the connecting member 701 is slidably connected to an insert rod 702 , one end of the insert rod 702 is slidably connected to a limit block 703 , and the limit block 703 is fixedly connected to the box body 603 .

[0032] The diameter of the end of the insertion rod 702 away from the limiting block 703 is larger than the diameter of the opening of the connecting member 701 adapted to fit the insertion rod 702 .

[0033] The surface of the insertion rod 702 is fixedly connected to a cross bar 704 , and a limit spring 705 is provided between the cross bar 704 and the connecting member 701 . The limit spring 705 is sleeved on the surface of the insertion rod 702 .

[0034] The connecting ends of the static terminal 4 and the dynamic terminal 5 are both made of a copper alloy material with high conductivity, and the contact surfaces are silver-plated.

[0035] The rod portion of the movable terminal 5 is a hollow tubular structure, the interior of which is filled with an insulating material with high thermal conductivity.

[0036] A heat sink is provided on the surface of the rod portion of the movable terminal 5 .

[0037] Working principle and usage process: Through the connection structure 2 in the combined electrical appliance body 1, the insulating basin 3, the static terminal 4 and the moving terminal 5 are connected and installed with each other, and the four-bar linkage composed of the clamping block 601, the connecting rod 602, the connecting arm 604 and the rotating shaft 605 is used to realize the smooth opening and closing operation of the moving terminal 5. The insulating handle 606 is used to manually control the rotation of the rotating shaft 605. Compared with the traditional direct-acting structure, the connecting rod assembly 6 can provide more stable operating force transmission, reduce the impact force at the moment of contact, and reduce wear. The design of the insulating handle 606 and the rotating shaft 605 ensures that the operator is effectively isolated from the live parts, and the safety is better. A connector 701 is set on the insulating handle 606, so that the plug 702 can slide on the connector 701, and the insulating handle 606 is limited by the connector 701 to avoid accidental touch. Unexplained tripping may cause arcing or equipment damage, affecting work efficiency. The insulating handle 606 is locked in position by cooperating with the plug rod 702 and the limit block 703, which can further increase its limiting effect. The variable design of the plug rod diameter 702 can prevent it from completely separating from the connector 701. The cross bar 704 and the limit spring 705 provide an elastic reset function. The connecting ends of the static terminal 4 and the moving terminal 5 are made of copper alloy materials with high conductivity, and the contact surface is silver-plated to reduce contact resistance and improve conductivity. The rod of the moving terminal 5 is a hollow tubular structure, and its interior is filled with insulating materials with high thermal conductivity, such as ceramic fibers, which are used to reduce the weight of the conductive rod, enhance heat dissipation performance, and reduce the temperature increase caused by the thermal effect of the current. The surface of the rod of the moving terminal 5 is provided with a heat sink to further improve its heat dissipation effect.

[0038] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. 252kV disconnector conductive structure, including a combined electrical appliance body (1), characterized in that: It also includes a connecting structure (2) symmetrically arranged inside the combined electrical appliance body (1), wherein one end of one of the connecting structures (2) is fixedly connected to an insulating basin (3), and a static terminal (4) is installed inside the insulating basin (3); the surface of the other connecting structure (2) is symmetrically installed with the insulating basin (3), and the inner surface of the insulating basin (3) is slidably connected to a moving terminal (5), and the moving terminal (5) is slidably connected to the connecting structure (2); A connecting rod assembly (6), wherein the end of the movable terminal (5) away from the static terminal (4) is symmetrically fixedly connected to a clamping block (601), the surface of the clamping block (601) is rotatably connected to a connecting rod (602), the end of the clamping block (601) away from the movable terminal (5) is rotatably connected to a connecting arm (604), the end of the connecting arm (604) away from the connecting rod (602) is fixedly connected to a rotating shaft (605), the surface of the rotating shaft (605) is rotatably connected to a box (603), the box (603) is fixedly connected to the combination electrical appliance body (1), and the surface of the rotating shaft (605) is fixedly connected to an insulating handle (606); The limiting assembly (7) is fixedly connected to the surface of the insulating handle (606) with a connecting piece (701).

2. The 252kV disconnector conductive structure according to claim 1, characterized in that: The surface of the connecting member (701) is slidably connected to an insertion rod (702), one end of the insertion rod (702) is slidably connected to a limiting block (703), and the limiting block (703) is fixedly connected to the box body (603).

3. The 252kV disconnector conductive structure according to claim 2, characterized in that: The diameter of the end of the insertion rod (702) away from the limiting block (703) is larger than the diameter of the opening of the connecting member (701) adapted to fit the insertion rod (702).

4. The 252kV disconnector conductive structure according to claim 3, characterized in that: A cross bar (704) is fixedly connected to the surface of the insertion rod (702), a limit spring (705) is provided between the cross bar (704) and the connecting member (701), and the limit spring (705) is sleeved on the surface of the insertion rod (702).

5. The 252kV disconnector conductive structure according to claim 4, characterized in that: The connecting ends of the static terminal (4) and the movable terminal (5) are both made of a copper alloy material with high conductivity, and the contact surfaces are silver-plated.

6. The 252kV disconnector conductive structure according to claim 5, characterized in that: The rod portion of the movable terminal (5) is in a hollow tubular structure, the interior of which is filled with an insulating material with high thermal conductivity.

7. The 252kV disconnector conductive structure according to claim 6, characterized in that: A heat sink is provided on the surface of the rod portion of the movable terminal (5).

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