High-voltage isolation switch suitable for different environments

Abstract

The invention discloses a high-voltage isolating switch suitable for different environments in the technical field of high-voltage isolating switches, and the high-voltage isolating switch comprises a base which is used for supporting the whole switch structure; the two insulating columns are arranged on the two sides of the base respectively and used for supporting the contact assembly and achieving electrical isolation; the static mounting seat is arranged at the top of one insulating column; the movable mounting seat is arranged at the top of the other insulating column; and the static contact and the moving contact are respectively arranged in the static mounting seat and the moving mounting seat in a sliding manner, can extend out to complete contact in a working state, and can be retracted into the mounting seats in a non-working state so as to adapt to severe environments such as sand storm, rain and snow, and the performance is prevented from being influenced by long-term exposure of the contacts. According to the invention, the moving contact and the static contact are respectively arranged in a slidable structure and are driven to stretch out or retract through the telescopic piece, so that the contacts are effectively prevented from being exposed to severe environments such as sand storm, rain and snow and moisture for a long time, the reliability of the isolating switch is improved, and the service life of the isolating switch is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage isolating switches, and in particular to a high-voltage isolating switch adaptable to different environments. Background Art

[0002] High-voltage disconnectors are widely used in power systems as disconnecting and isolating devices. They are primarily used to provide a clear disconnect point during maintenance of high-voltage transmission and distribution lines or equipment, ensuring safety during these operations. Existing high-voltage disconnectors typically utilize an exposed contact structure, meaning the moving and stationary contacts are constantly exposed to the air, and direct contact is established upon closing.

[0003] However, in complex environments such as windy sand, high humidity, rain, and snow, exposed contacts are susceptible to contamination from factors such as dust, moisture, and salt spray. This can lead to oxidation, corrosion, or accumulation of dirt on the contact surface, resulting in poor contact, breakdown, and even ablation, seriously affecting the reliability and service life of the disconnector. Furthermore, in traditional structures, the contacts rely solely on their own mechanical positioning and closure, lacking auxiliary crimping capabilities, resulting in poor conduction stability. Cleaning and maintenance often rely on manual labor, increasing operational costs and preventing automated online cleaning. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-voltage disconnector that can adapt to different environments, so as to solve the problems raised in the above-mentioned background technology that the contacts of the existing high-voltage disconnectors are easily contaminated, have poor contact, lack crimping and self-cleaning functions, and have high maintenance costs in harsh environments such as wind, sand, high humidity, rain and snow.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-voltage disconnector adaptable to different environments, characterized in that it includes a base, insulating columns arranged on both sides of the base; a static mounting seat arranged on the insulating column on one side, and a dynamic mounting seat arranged on the insulating column on the other side; a static contact slidably arranged on the static mounting seat, and a dynamic contact slidably arranged on the dynamic mounting seat; the dynamic contact is connected to the dynamic mounting seat via a first telescopic member; and the static contact is connected to the static mounting seat via a second telescopic member.

[0006] Preferably, the first telescopic member includes: a mounting frame, one end of which is rotatably set on the movable mounting seat; a cam, which is set on the movable mounting seat; a mounting protrusion, which is set on the inner side of the movable mounting seat; a sliding rod, which is slidably passed through the mounting protrusion, with one end resting on the outer edge of the cam and the other end connected to the movable contact; a compression spring, which is set between the mounting protrusion and the movable contact, and is used to provide a reset elastic force for the movable contact.

[0007] Preferably, the second telescopic member includes: an installation cavity, which is opened in the static installation seat; a side opening, which is arranged on the side wall of the installation cavity; a triangular slider, which is slidably arranged on the static installation seat and can slide into the installation cavity when driven by a power member; a power member, which is used to drive the triangular slider to slide in a set direction; the sliding movement of the triangular slider controls the lifting and lowering of the static contact in the installation cavity.

[0008] Preferably, the power member includes: a first rotating block, one end of which is rotatably connected to the outer side of the mounting frame; a second rotating block, one end of which is connected to the triangular slider; and the other end of the first rotating block is rotatably connected to the other end of the second rotating block.

[0009] Preferably, a pop-up piece is further provided at the other end of the installation frame.

[0010] Preferably, the pop-up member includes: a mounting post, which is arranged on the outside of the mounting frame and has a slope at its end; a limit block, which is arranged on the mounting post; a telescopic spring, which is arranged between the limit block and the mounting frame, and is used to provide a rebound force for the mounting post; a sliding sleeve, which is arranged at the other end of the mounting frame and is slidably arranged between the mounting frame and the moving contact; an elastic spring, which is arranged between the sliding sleeve and the mounting frame, and is used to provide a reset force for the sliding sleeve; a through hole, which is opened on the mounting frame, and the mounting post can pass through the through hole and contact the side of the moving contact.

[0011] Preferably, a friction plate is provided on the inner side of the mounting frame, and the friction plate is used to contact and wipe the contact surface between the moving contact and the static contact when the moving contact is extended or retracted.

[0012] Preferably, the friction plate is connected to the mounting frame via a clamping member.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Ability to adapt to a variety of complex environments: The present invention arranges the moving contact and the static contact in a sliding structure respectively, and drives them to extend or retract through a telescopic member, thereby effectively preventing the contacts from being exposed to harsh environments such as wind, sand, rain, snow, and humidity for a long time, thereby improving the reliability and service life of the disconnector.

[0014] 2. It has a crimping enhancement function and more stable conduction: After the moving contact slides to the end, it can trigger the pop-up structure, so that the mounting column presses the side of the moving contact through the through hole, and further presses it toward the static contact, thereby improving the fit of the contact surface, effectively reducing contact resistance and improving conduction reliability.

[0015] 3. Self-cleaning design, low maintenance: The present invention is provided with a friction plate on the inner side of the installation frame, which can wipe the contact surface during the extension and retraction of the moving contact, and promptly remove dust, oxide layer and other attachments to avoid poor contact problems caused by pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 Schematic diagram of the working structure of the present invention; Figure 2 It is a rear view of the structure of the present invention; Figure 3 Schematic diagram of the structure of the first telescopic member of the present invention; Figure 4 Schematic diagram of the structure of the second telescopic member of the present invention; Figure 5 This is a schematic diagram of the ejection member structure of the present invention; Figure 6 This is a schematic diagram of the structure of the present invention when not in operation; Figure 7 It is a structural schematic diagram of the elastic member of the present invention; Figure 8 An enlarged view of the ejection member structure of the present invention; Figure 9 A schematic diagram of the structure of the ejection member of the present invention being extruded; Figure 10 This is an enlarged view of the structure of the ejection piece of the present invention being extruded.

[0018] In the accompanying drawings, the list of components represented by each number is as follows: base 100; insulating column 101; static mounting seat 102; dynamic mounting seat 103; static contact 104; dynamic contact 105; first telescopic member 106; mounting frame 106a; cam 106b; mounting protrusion 106c; sliding rod 106d; compression spring 106e; second telescopic member 107; mounting cavity 107a; side opening 107b; triangular slider 107c; ​​power member 107d; first rotating block 107d-1; second rotating block 107d-2; pop-up member 108; mounting column 108a; limit block 108b; telescopic spring 108c; sliding sleeve 108d; elastic spring 108e; through hole 108f; friction plate 109; snap-in member 110. DETAILED DESCRIPTION

[0019] 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 any creative efforts shall fall within the scope of protection of the present invention.

[0020] See also Figure 1-10 The present invention provides a technical solution: a high-voltage disconnector adaptable to different environments, comprising a base 100 for supporting the entire switch structure; two insulating columns 101, respectively arranged on both sides of the base 100, for supporting the contact assembly and achieving electrical isolation; a static mounting seat 102, arranged on the top of one of the insulating columns 101; a dynamic mounting seat 103, arranged on the top of the other insulating column 101; a static contact 104 and a dynamic contact 105, respectively slidably arranged in the static mounting seat 102 and the dynamic mounting seat 103, and can be extended to complete contact in the working state, and retracted into the mounting seat in the non-working state, so as to adapt to harsh environments such as wind, sand, rain and snow, and avoid long-term exposure of the contacts to affect performance.

[0021] To drive the telescopic movement of the contacts, the disconnector further includes a first telescopic member 106. The first telescopic member 106 comprises two parallel mounting frames 106a, one end of each of which is rotatably connected to the movable mounting base 103 via a rotating shaft; two movable contacts 105, each slidably mounted within the mounting frames 106a; a cam 106b, fixedly mounted on the movable mounting base 103; two mounting protrusions 106c, each disposed on the inner side of the two mounting frames 106a; two sliding rods 106d, each slidably passing through the mounting protrusions 106c, with one end abutting against the outer edge of the cam 106b and the other end connected to the corresponding movable contact 105; and two compression springs 106e, each disposed between the mounting protrusions 106c and the movable contact 105, for providing a reset force for the movable contact 105. When the driving mechanism rotates the mounting frame 106a, the sliding rod 106d slides on the outer edge surface of the cam 106b and undergoes axial displacement, thereby driving the moving contact 105 to extend or retract in the mounting frame 106a, thereby achieving controllable driving of the moving contact 105.

[0022] The disconnector also includes a second telescopic member 107. The second telescopic member 107 includes: a mounting cavity 107a, which is provided within the static mounting seat 102; a lateral opening 107b, formed on the sidewall of the mounting cavity 107a; a triangular slider 107c, which is slidably mounted on the static mounting seat 102 and can enter the mounting cavity 107a under the drive of a power member 107d; the power member 107d adopts a connecting rod structure, which is used to drive the triangular slider 107c to slide along a set direction. The triangular slider 107c has a sloped structure, and its slope abuts against the slope of the bottom of the static contact 104. When the triangular slider 107c slides into the mounting cavity 107a, its slope pushes the static contact 104 upward, thereby achieving the lifting and lowering movement of the static contact 104, cooperating with the moving contact 105 to complete the closing or separation operation.

[0023] To achieve synchronized movement of the moving and static contacts 104, the disconnector also includes a power linkage structure. This structure comprises a first rotating block 107d-1, one end of which is rotatably connected to one end of the outer side of the mounting frame 106a; and a second rotating block 107d-2, one end of which is rotatably connected to the triangular slider 107c and the other end of which is rotatably connected to the other end of the first rotating block 107d-1. This power linkage structure allows the moving and static contacts 105, 104 to be simultaneously controlled to achieve synchronized extension and retraction, driven by a single drive source, improving operational coordination and efficiency.

[0024] To enhance the contact fit, a pop-up member 108 is provided at the other end of the mounting frame 106a. This pop-up member 108 comprises a mounting post 108a, located outside the mounting frame 106a and having a sloped end; a stopper 108b, mounted on the mounting post 108a; a telescopic spring 108c, located between the stopper 108b and the mounting frame 106a to provide a resilient force for the mounting post 108a; a sliding sleeve 108d, slidingly disposed between the mounting frame 106a and the moving contact 105 and connected to the mounting frame 106a via an elastic spring 108e; and a through hole 108f, provided in the mounting frame 106a, for allowing the mounting post 108a to pass through after the sliding sleeve 108d moves and contact the side of the moving contact 105, thereby pressing the moving contact 105 toward the static contact 104 and enhancing the fit. When the moving contact 105 slides to the end of the mounting frame 106a, it pushes the sliding sleeve 108d to move axially, exposing the channel of the mounting column 108a. The mounting column 108a is pushed out under the action of the spring force and contacts the side of the moving contact 105, forming a lateral crimping; when the moving contact 105 returns, the sliding sleeve 108d returns under the action of the elastic spring 108e, and pushes the mounting column 108a back to its original position through the inclined surface cooperation between it and the mounting column 108a. The structure is self-locking and reliable, and the movements are coordinated.

[0025] Furthermore, to reduce the risk of poor contact due to external contamination, a friction plate 109 is installed inside the mounting frame 106a. Positioned along the retracting path of the moving contact 105, the friction plate 109 maintains constant contact with the contact surface during its reciprocating motion, automatically cleaning the surface of dust and oxides and maintaining good electrical performance. The friction plate 109 is removably attached to the mounting frame 106a via a clip 110, facilitating maintenance and replacement, further enhancing the device's practicality and convenience.

[0026] Working Principle: When the disconnector needs to be closed, the drive mechanism activates, causing the two mounting frames 106a to rotate around the movable mounting seat 103, which in turn drives the sliding rod 106d to slide along the outer edge of the cam 106b. As the sliding rod 106d moves, the moving contact 105 extends outward along the mounting frame 106a. When the moving contact 105 slides to the end of the mounting frame 106a, its end contacts the sliding sleeve 108d at one end of the mounting frame 106a, pushing the sliding sleeve 108d axially, exposing the through-hole 108f in the mounting frame 106a. At this point, the mounting post 108a, under the elastic force of the telescopic spring 108c, passes through the through-hole 108f and abuts against the side of the moving contact 105, exerting lateral pressure on the moving contact 105. This enhances the contact stability between the moving contact 105 and the stationary contact 104, reduces contact resistance, and improves conduction reliability.

[0027] At the same time, the transmission element begins to operate, driving the triangular slider 107c mounted on the static mounting seat 102 to slide along a predetermined direction into the mounting cavity 107a. Triangular slider 107c has an inclined surface that abuts against the static contact 104. During its sliding, the inclined surface pushes the static contact 104 upward, causing it to rise synchronously. When the movable contact 105 and the static contact 104 are docked, the entire disconnector is electrically closed.

[0028] During the closing action, the moving contact 105 comes into contact with the friction plate 109 provided on the inner side of the mounting frame 106a in the extension path. The friction plate 109 wipes its contact surface to remove dust, oxide layer and other attachments in time, effectively ensuring good electrical conductivity between the contacts and preventing poor contact due to contamination.

[0029] When the disconnector needs to be opened, the drive mechanism reverses, driving the sliding rod 106d back along the cam 106b. Under the reset force of the compression spring 106e, the moving contact 105 retracts along the mounting frame 106a. The sliding sleeve 108d also returns to its original position under the action of its elastic spring 108e, contacting the inclined surface of the mounting post 108a and pushing the mounting post 108a back to its original position, thereby releasing the lateral pressure on the moving contact 105. Simultaneously, the power linkage structure drives the triangular slider 107c out of the mounting cavity 107a, and the static contact 104 moves downward and eventually retracts into the static mounting seat 102, completing the disconnection of the switch.

[0030] Throughout operation, the moving contact 105 and the stationary contact 104 extend only when needed. When not in operation, they remain stowed, preventing long-term exposure to complex environments such as wind, sand, rain, and snow, thereby improving overall protection. Furthermore, during the extension and retraction process, the contacts cooperate with the friction plate 109 to achieve an automatic cleaning function, significantly improving contact surface cleanliness and conduction stability. The provision of a pop-up structure enhances contact compression and further reduces contact resistance, ensuring the high reliability and long life of the high-voltage disconnector even in harsh environments.

[0031] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0032] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-voltage isolating switch adapted to different environments, including A base (100), and insulating columns (101) arranged on both sides of the base (100); A static mounting seat (102) is provided on the insulating column (101) on one side, and a dynamic mounting seat (103) is provided on the insulating column (101) on the other side, characterized in that ； a static contact (104) slidably disposed on the static mounting seat (102), and a dynamic contact (105) slidably disposed on the dynamic mounting seat (103); The movable contact (105) is connected to the movable mounting seat (103) via a first telescopic member (106); The static contact (104) is connected to the static mounting seat (102) via a second telescopic member (107); The first telescopic member (106) and the second telescopic member (107) drive the contact to extend in a working state and to be completely retracted in a non-working state.

2. The high-voltage disconnector adapted to different environments according to claim 1, characterized in that: The first telescopic member (106) comprises: A mounting frame (106a), one end of which is rotatably mounted on the movable mounting seat (103); A cam (106b) is disposed on the movable mounting seat (103); A mounting protrusion (106c) is provided on the inner side of the movable mounting seat (103); A sliding rod (106d) is slidably arranged on the mounting protrusion (106c), with one end abutting against the outer edge of the cam (106b) and the other end being connected to the moving contact (105); A compression spring (106e) is provided between the mounting protrusion (106c) and the movable contact (105), and is used to provide a resetting elastic force for the movable contact (105).

3. The high-voltage disconnector adapted to different environments according to claim 2, characterized in that: The second telescopic member (107) comprises: a mounting cavity (107a) provided in the static mounting seat (102); A side opening (107b) is provided on a side wall of the installation cavity (107a); A triangular slider (107c) is slidably disposed on the static mounting seat (102) and can slide into the mounting cavity (107a) when driven by a power member (107d); A power member (107d) is used to drive the triangular slider (107c) to slide along a set direction; The sliding movement of the triangular slider (107c) controls the lifting and lowering of the static contact (104) in the installation cavity (107a).

4. The high-voltage disconnector adapted to different environments according to claim 3, characterized in that: The power part (107d) comprises: A first rotating block (107d-1), one end of which is rotatably connected to the outer side of the installation frame (106a); A second rotating block (107d-2), one end of which is connected to the triangular slider (107c); The other end of the first rotating block (107d-1) is rotatably connected to the other end of the second rotating block (107d-2).

5. The high-voltage disconnector adapted to different environments according to claim 2, characterized in that: The other end of the installation frame (106a) is further provided with a pop-up member (108).

6. The high-voltage disconnector adapted to different environments according to claim 5, characterized in that: The ejection member (108) comprises: A mounting column (108a) is arranged outside the mounting frame (106a), and an inclined surface is provided at an end thereof; A limiting block (108b) is provided on the mounting column (108a); a telescopic spring (108c), arranged between the limiting block (108b) and the mounting frame (106a), and used for providing a rebound force for the mounting column (108a); A sliding sleeve (108d) is provided at the other end of the mounting frame (106a) and is slidably provided between the mounting frame (106a) and the moving contact (105); an elastic spring (108e), disposed between the sliding sleeve (108d) and the mounting frame (106a), and used for providing a reset force for the sliding sleeve (108d); A through hole (108f) is provided on the installation frame (106a), and the installation column (108a) can pass through the through hole (108f) and contact the side surface of the moving contact (105).

7. The high-voltage disconnector adapted to different environments according to claim 2, characterized in that: A friction plate (109) is provided on the inner side of the mounting frame (106a), and the friction plate (109) is used to contact and wipe the contact surface between the moving contact (105) and the static contact (104) during the process of extending or retracting the moving contact (105).

8. The high-voltage disconnector adapted to different environments according to claim 7, characterized in that: The friction plate (109) is connected to the installation frame (106a) via a clamping member (110).

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