A three-column horizontal rotary high-voltage disconnector based on a vertical lifting mechanism

Abstract

The present invention discloses a three-column horizontal rotary high-voltage disconnector based on a vertical lifting mechanism, wherein the flange and the sleeve are integrated, and the support insulator is connected to the flange by bolts as a transmission system; the housing and the sleeve are both provided with tracks, and a spring hook is attached to the conductive rod fixing sleeve. The conductive rod fixing sleeve cooperates with the housing and the track on the sleeve to achieve closing. The sleeve is provided with a track and a spring hook. When the entire mechanism is disturbed during the closing process, the increased friction force at the top of the spring hook balances the interference force, causing the sleeve to continue rotating until the spring hook moves to the end of the balance track. When interference is encountered during the closing process, the balance track provided on the sleeve can enable the conductive rod to move up and down after reaching the static contact position, thereby avoiding premature closing. The present invention has smooth opening and closing process and reliable performance, effectively solves the problem of premature flipping of the conductive rod of the three-column horizontal disconnector when encountering interference, and performs opening and closing operations simply, accurately and safely.

Description

Technical Field

[0001] The invention belongs to the technical field of disconnectors, and in particular relates to a three-column horizontal rotary high-voltage disconnector based on a vertical lifting mechanism. Background Art

[0002] In high-voltage power grids, high-voltage disconnectors are crucial switchgear in the electrical systems of power plants and substations. They establish reliable insulation gaps, switch lines, and transform busbar wiring patterns. Their primary function is to ensure the safety of high-voltage electrical equipment and devices during maintenance work, isolating voltages. Their operational reliability directly ensures the safety of personnel, high-voltage electrical equipment, and devices during maintenance.

[0003] See also Figure 1 , is a GW27A-800 high-voltage AC disconnector, and its structural feature is a three-column horizontal rotary type. The connecting rod transmission mechanism drives the moving contact column insulator to rotate, driving the intermediate flip mechanism and the conductive rod to rotate, connecting the two static contacts, and realizing the conduction of the circuit. In actual use, due to the harsh outdoor environment, there will always be various interferences during the closing process, resulting in closing failure. The main reasons for the closing failure are wind disturbance, structural deformation, and accumulation of debris, etc., as well as friction between the conductive rod and the static contact, uneven movement of the connecting rod, and even changes in the kinetic inertia of the conductive rod (such as the rest of birds or other wild animals) may cause the flipping movement to start prematurely, resulting in the failure of the closing operation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the deficiencies in the above-mentioned prior art and provide a three-column horizontal rotary high-voltage disconnector based on a vertical lifting mechanism to solve the interference problem during the opening and closing process of the three-column horizontal rotary disconnector and ensure that the opening and closing process is safe and reliable.

[0005] The present invention adopts the following technical solutions:

[0006] A three-column horizontal rotary high-voltage disconnector based on a vertical lifting mechanism includes a horizontally arranged conductive rod with moving contacts provided at both ends. The opening and closing operations are realized by the closed connection between the moving contact and the static contact. The middle lower end of the conductive rod is connected to the vertical lifting mechanism, which is used to realize the lifting movement of the conductive rod after it reaches the static contact position.

[0007] Specifically, the vertical lifting mechanism includes a support insulator, one end of which is connected to the conductive rod fixing sleeve through a sleeve, and is connected to the conductive rod through the conductive rod fixing sleeve. A spring hook is provided at the lower part of the conductive rod fixing sleeve, and the spring hook cooperates with the sleeve to realize lifting.

[0008] Furthermore, a flange is provided at one end of the post insulator, and one end of the sleeve is fixedly connected to the flange.

[0009] Furthermore, a shell is provided on the flange outside the sleeve.

[0010] Furthermore, an arcuate groove is formed on the housing corresponding to the spring hook, and the movable end of the spring hook moves along the arcuate groove.

[0011] Furthermore, one end of the post insulator is connected to the flange by means of bolts.

[0012] Furthermore, the spring hooks include two groups, which are symmetrically arranged at the lower part of the conductive rod fixing sleeve.

[0013] Furthermore, two independent tracks are respectively provided on the sleeve corresponding to the spring hooks, and the two independent tracks are symmetrically arranged, and each independent track includes a parallel track and an S-shaped track.

[0014] Furthermore, one end of the spring hook can move along an independent track.

[0015] Furthermore, the conductive rod fixing sleeve is a T-shaped structure, the vertical section is embedded in the sleeve, and the conductive rod is horizontally arranged at the left and right ends of the conductive rod fixing sleeve.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] The present invention provides a three-column horizontal rotary high-voltage disconnector based on a vertical lifting mechanism, which simplifies the previous structure and solves the problem of the overall mechanism encountering interference (wind disturbance, structural deformation, flying birds, accumulation of debris, etc.) during the closing process; the vertical lifting mechanism can achieve precise closing, and the parallel part of the track on the sleeve forms a buffer area, that is, when encountering interference, the conductive rod will not be raised or lowered prematurely. After the overall balancing system balances the interference, the sleeve track-spring hook-housing assembly mechanism drives the conductive rod to rise and fall normally.

[0018] Furthermore, the anti-interference system composed of the sleeve track-spring hook-housing balances the interference force and accurately drives the conductive rod to descend and close. The parallel track on the sleeve can realize the anti-interference function and form a buffer area for the smooth closing of the conductive rod, that is, the conductive rod will not descend in advance when encountering interference. After the spring hook balances its interference force, the spring hook drives the conductive rod to descend normally and close the circuit. One end of the support insulator is for transmitting power, and the conductive rod fixing sleeve mainly plays a connecting role. The lower part of the conductive rod fixing sleeve is provided with a spring hook. When the entire mechanism is in motion, the spring hook and the arc groove on the inner wall of the shell generate friction, which balances the interference force it receives during the rotation process and ensures that it accurately enters the closing position.

[0019] Furthermore, one end of the sleeve is fixed to the flange, and power is transmitted to the sleeve through the support insulator.

[0020] Furthermore, the shell and the flange are fixed together, and the power provided by the support insulator is transmitted to the shell and the sleeve, driving the movement of the entire mechanism. Two arc-shaped grooves are provided on the inner wall of the shell, which cooperate with the track of the sleeve and the spring hook on the conductive rod support to realize the anti-interference function.

[0021] Furthermore, there is elastic force and friction between the arc groove in the shell and the spring hook, so the torque applied to the shell will be transmitted to the spring hook, giving the spring hook a rotational force, driving the conductive rod support to rotate; when the conductive rod support encounters interference, the shell continues to rotate, at this time the elastic force of the spring hook decreases and the friction force increases, balancing the interference force it receives, and the entire conductive rod support will resist the interference and continue to rotate until the conductive rod rotates into place.

[0022] Furthermore, the support insulator is connected by bolts, so that the sleeve and the support insulator can be fastened together, ensuring that when power is transmitted, vibration caused by looseness of the two mechanisms will not cause errors in the movement of the entire mechanism.

[0023] Furthermore, the spring hooks symmetrically arranged on the conductive rod fixing sleeve can generate friction force when the entire mechanism moves, and the spring hooks rub against the arc grooves on the inner wall of the shell to balance the interference force generated when the mechanism moves, thereby ensuring its precise closing.

[0024] Furthermore, the S-shaped track of the sleeve serves as the closing process. When the conductive rod rotates smoothly into position, the spring hook enters the S-shaped track of the sleeve, indicating that the conductive rod has successfully passed the interference stage. At this time, the sleeve continues to rotate, and the conductive rod support begins to descend for closing. The parallel track of the sleeve serves as an important component of anti-interference. When the spring hook is in the parallel track, the conductive rod support will not move downward for closing. At the same time, the end of the parallel track serves as the starting point for closing and plays a positioning role.

[0025] Furthermore, the fixed end of the spring hook is arranged in the sleeve, so that when the sleeve moves, the spring hook also moves at the same time, thereby cooperating with other mechanisms to generate interference force generated by balancing the entire mechanism during movement.

[0026] Furthermore, the conductive rod fixing sleeve is a T-shaped structure, and the vertical section is embedded in the sleeve. When the sleeve moves, the conductive rod fixing sleeve can be driven to move through the spring hook, thereby driving the conductive rods at the left and right ends to move, thereby performing opening and closing operations.

[0027] In summary, the present invention has smooth opening and closing processes and reliable performance, effectively solves the problem of premature flipping of the conductive rod of the three-column horizontal disconnector encountering interference, and performs opening and closing operations simply, accurately and safely.

[0028] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the GW27A-800 high-voltage AC disconnect switch;

[0030] Figure 2 It is a structural diagram of the present invention;

[0031] Figure 3 It is a rear view of the present invention;

[0032] Figure 4 A schematic diagram of a post insulator according to the present invention;

[0033] Figure 5 Schematic diagram of the conductive rod of the present invention.

[0034] Figure 6 It is a partial schematic diagram of the vertical lifting mechanism of the present invention.

[0035] Including: 1. Post insulator; 2. Flange; 3. Housing; 4. Sleeve; 5. Conductive rod fixing sleeve; 6. Conductive rod; 7. Moving contact; 8. Spring hook. DETAILED DESCRIPTION

[0036] 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 them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "one side," "one end," and "one side" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, in the description of the present invention, unless otherwise specified, "a plurality" means two or more.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0039] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0040] It should also be understood that the terms used in the present specification are only for the purpose of describing particular embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0041] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0042] The accompanying drawings illustrate various schematic diagrams of structures according to embodiments disclosed herein. These figures are not drawn to scale; for clarity, some details are exaggerated and some details may be omitted. The shapes of the various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0043] The present invention provides a three-column horizontal rotary high-voltage disconnector based on a vertical lifting mechanism. The flange and the sleeve are integrated, and the support insulator is connected to the flange by bolts, which serves as the transmission system of the mechanism. The housing and the sleeve are both provided with tracks, and the conductive rod fixing sleeve is attached with a spring hook. The conductive rod fixing sleeve cooperates with the housing and the track on the sleeve to smoothly close the switch. The purpose of providing the track and the spring hook on the sleeve is that when the entire mechanism is disturbed during the closing process, the increased friction force at the top of the spring hook balances the interference force, allowing the sleeve to continue rotating until the spring hook moves to the end of the balance track. The purpose of providing a section of the balance track on the sleeve is that during the closing process, if there is interference, the balance track can allow the conductive rod to move up and down after reaching the static contact position, and will not move up and down prematurely due to interference, resulting in premature closing. The present invention has smooth opening and closing operations and reliable performance. It effectively solves the problem of premature flipping of the conductive rod of the three-column horizontal disconnector when encountering interference, and performs opening and closing operations simply, accurately and safely.

[0044] The present invention provides a three-column horizontal rotary high-voltage disconnector based on a vertical lifting mechanism, including a conductive rod 6 and a vertical lifting mechanism. The conductive rod 6 is arranged horizontally, and moving contacts 7 are respectively provided at both ends of the conductive rod 6. The opening and closing operations are realized by the closed connection between the moving contact 7 and the static contact. The middle lower end of the conductive rod 6 is connected to the vertical lifting mechanism.

[0045] See also Figure 2 、 Figure 3 and Figure 4 The vertical lifting mechanism includes a post insulator 1, a flange 2, a shell 3, a sleeve 4 and a conductive rod fixing sleeve 5.

[0046] One end of the post insulator 1 is connected to the flange 2 by bolts, the sleeve 4 is fixed on the plane of the flange 2, the shell 3 is sleeved on the flange 2 outside the sleeve 4, and one end of the sleeve 4 is connected to the conductive rod fixing sleeve 5. The power is provided by the post insulator 1 to drive the sleeve 4 and the shell 3 to rotate. The sleeve 4 is provided with two parallel tracks and two "S"-shaped tracks, which cooperate with the spring hook 8 to jointly control the closing process of the entire lifting mechanism.

[0047] See also Figure 4 and Figure 6 There are two independent tracks on the sleeve 4. Each track consists of a parallel track and an S-shaped track. The end of the parallel track and the head end of the S-shaped track form a complete track. The spring hook 8 is embedded in the independent track. When the entire mechanism moves, it contacts the shell to generate interaction force, driving the conductive rod fixing sleeve to move.

[0048] See also Figure 5 and Figure 6The conductive rod fixing sleeve 5 serves as a vertical lifting mechanism. The left and right ends of the upper part of the conductive rod fixing sleeve 5 are respectively connected to the conductive rod 6. The end of the conductive rod 6 is provided with a moving contact 7. The lower part of the conductive rod fixing sleeve 5 is connected with the sleeve 4, and the lower part is attached with a spring hook 8. The deflection of the entire vertical lifting mechanism is controlled by the spring hook 8.

[0049] The sleeve 4 and the spring hook 8 are the focus of the present invention. When the disconnector equipment is closed, the post insulator 1 rotates together with the flange 2. Since the housing 3 and the sleeve 4 are designed to be fixed on the flange 2, the torque applied to the flange 2 will be transmitted to the sleeve 4, driving the sleeve 4 and the housing 3 to rotate.

[0050] The spring hook 8 is attached to the track of the sleeve 4, and one end moves in the arc groove of the shell 3. When the shell 3 and the sleeve 4 rotate, the spring hook 8 makes surface contact with the shell 3, and the friction force generated drives the conductive rod fixing sleeve 5 to start rotating. At this time, the entire disconnector starts to rotate.

[0051] The parallel track of the sleeve 4 serves as the rotation stage of the entire disconnector. When the rotation of the entire disconnector encounters interference, the conductive rod fixing sleeve 5 stops rotating. At this time, the sleeve 4 and the shell 3 continue to rotate. Under the squeezing of the arc groove in the shell 3, the elastic force of the spring hook 8 decreases and the friction force increases. The increased friction force balances the interference force, driving the conductive rod fixing sleeve 5 to continue rotating until the spring hook 8 moves to the end of one end of the parallel track on the sleeve 4.

[0052] When the spring hook 8 has not moved to the end of one end of the parallel track, the entire lifting mechanism will not descend and close in advance. When the spring hook 8 moves to the end of one end of the parallel track, that is, to the starting point of the "S"-shaped track, the rotation movement of the disconnector ends.

[0053] When the spring hook 8 enters the "S"-shaped track, the conductive rod 6 has completed its rotation. The housing 3 and sleeve 4 continue to rotate, driving the spring hook 8 to continue moving along the "S"-shaped track. As the spring hook 8 continues to move, the conductive rod fixing sleeve 5 begins to descend until the spring hook 8 moves to the end of the "S"-shaped track. At this time, the moving contact 7 on the conductive rod 6 contacts the other two static contacts of the disconnector, and the closing operation is successfully completed.

[0054] The opening process is similar to the closing process. The opening operation can be completed by simply providing opposite forces between the support insulator 1 and the flange 2.

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0056] The present invention is redesigned based on the GW27A-800 high-voltage AC isolating switch, solves the interference problem of the high-voltage AC isolating switch, and ensures the success rate of high-voltage switch closing.

[0057] In summary, the present invention is a three-column horizontal rotary high-voltage disconnector based on a vertical lifting mechanism. By arranging a spring hook, the friction between the spring hook and the shell increases after the entire mechanism is disturbed, and the torque formed by the friction force is balanced with the torque of the interference force, so that it continues to rotate until it touches the static contact block; a parallel track is arranged on the sleeve, which is used to make the conductive rod descend and close after reaching the static contact position if there is interference during the closing process, and will not descend prematurely after being disturbed; the anti-interference system composed of the sleeve track-spring hook-shell completely eliminates the influence of external interference on the disconnector in the parallel stage of the sleeve track, thereby essentially eliminating the premature flipping phenomenon of the disconnector caused by interference during the closing process.

[0058] The above content is only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A three-column horizontal rotary high-voltage disconnector based on a vertical lifting mechanism, characterized in that: The invention comprises a conductive rod (6) arranged horizontally, wherein both ends of the conductive rod (6) are provided with moving contacts (7), and the opening and closing operation is realized by closing the moving contacts (7) and the static contacts, and the lower end of the middle part of the conductive rod (6) is connected with a vertical lifting mechanism, and the vertical lifting mechanism is used to realize the lifting movement of the conductive rod (6) after the conductive rod (6) reaches the static contact position, and the vertical lifting mechanism comprises a support insulator (1), one end of the support insulator (1) is connected to the conductive rod fixing sleeve (5) through a sleeve (4), and the conductive rod (6) is connected through the conductive rod fixing sleeve (5), and an elastic hook (8) is provided at the lower part of the conductive rod fixing sleeve (5), and the elastic hook (8) cooperates with the sleeve (4) to realize lifting, and the elastic hook (8) includes two groups, which are symmetrically arranged at the lower part of the conductive rod fixing sleeve (5), and two independent tracks are respectively provided on the sleeve (4) corresponding to the elastic hook (8), and the two independent tracks are symmetrically arranged, and each independent track includes a parallel track and an S-shaped track, and one end of the elastic hook (8) can move along the independent track; A housing (3) is provided on the flange (2) outside the sleeve (4), and an arc groove is provided on the housing (3) corresponding to the elastic hook (8), and the movable end of the elastic hook (8) moves along the arc groove.

2. The three-column horizontal rotary high-voltage disconnector based on the vertical lifting mechanism according to claim 1 is characterized in that: One end of the post insulator (1) is provided with a flange (2), and one end of the sleeve (4) is fixedly connected to the flange (2).

3. The three-column horizontal rotary high-voltage disconnector based on the vertical lifting mechanism according to claim 2 is characterized in that: One end of the post insulator (1) is connected to the flange (2) via bolts.

4. The three-column horizontal rotary high-voltage disconnector based on the vertical lifting mechanism according to claim 1 is characterized in that: The conductive rod fixing sleeve (5) is a T-shaped structure, the vertical section is embedded in the sleeve (4), and the conductive rod (6) is horizontally arranged at the left and right ends of the conductive rod fixing sleeve (5).

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