A single-column vertical telescopic high-voltage disconnect switch

Abstract

The present invention discloses a single-column vertical telescopic high-voltage disconnector, comprising: a base; a conductive arm, comprising an upper conductive arm and a lower conductive arm, the upper conductive arm and the lower conductive arm being hinged, and both the lower conductive arm and the upper conductive arm having two states: closed and open; a rack pull rod, passing through the lower conductive arm, the lower conductive arm and the rack pull rod being staggered and hinged on the base; when the lower conductive arm is driven by a driving mechanism to switch to the open state, it can drive the rack pull rod to move relative to the lower conductive arm, thereby driving the upper conductive arm to switch to the open state. The single-column vertical telescopic high-voltage disconnector according to an embodiment of the present invention operates smoothly and reliably, and can effectively reduce the floor space occupied.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage power equipment, in particular to a single-column vertical telescopic high-voltage disconnect switch. Background Art

[0002] Currently, with the rapid development of the national economy, the demand for electricity, as a clean energy source, is increasing. State Grid Corporation of China and China Southern Power Grid Corporation have both increased their investment in grid facilities, ushering in new development opportunities for the high-voltage switchgear industry. Power facilities are developing towards higher voltage levels and longer transmission distances, and 800kV ultra-high voltage transmission lines will become increasingly common. Existing 800kV disconnectors include two-post horizontal telescopic, two-post horizontal vertical opening, and three-post horizontal rotary types. These three types of disconnectors occupy a large area when used as busbar disconnectors. Previously, due to the small number of 800kV substations, the area requirements for disconnectors were relatively small. However, with increasing demand, the requirements for substation floor space are becoming increasingly stringent, and there is an urgent need to develop a vertical telescopic disconnector with a smaller footprint. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a single-column vertical telescopic high-voltage disconnector that can complete opening and closing operations using a smaller footprint.

[0004] According to the first aspect of the present invention, the single-column vertical telescopic high-voltage disconnector comprises: a base; a conductive arm, comprising an upper conductive arm and a lower conductive arm, the upper conductive arm and the lower conductive arm being hinged; the lower conductive arm and the upper conductive arm both have two states: closed and open; the lower conductive arm is hinged to the base at one end away from the upper conductive arm, and the lower conductive arm is connected to a driving mechanism that can drive it to rotate around a hinge connected to the base to achieve switching between the open and closed states; a rack pull rod is passed through the lower conductive arm, one end of which is hinged to the base and the hinge axis and the hinge axis between the lower conductive arm and the base are staggered, and the other end is transmission-connected to the upper conductive arm; when the lower conductive arm is driven by the driving mechanism to switch to the open state, it can drive the rack pull rod to move relative to the lower conductive arm, thereby driving the upper conductive arm to move to the open state.

[0005] The bidirectional hard-sealed ball valve according to the embodiment of the present invention has at least the following beneficial effects: the conductive arm adopts a single-column vertical telescopic structure, which can effectively reduce the floor space; mechanical transmission is adopted between the upper conductive arm and the base, and between the upper conductive arm and the lower conductive arm, and the movement is smooth and reliable.

[0006] According to some embodiments of the present invention, an upwardly extending main tool seat is provided at one end of the base, and an end of the lower conductive arm away from the upper conductive arm is connected to a rotating seat, and the rotating seat and the rack pull rod are staggered and hinged on the main tool seat.

[0007] According to some embodiments of the present invention, the rotating seat is provided with a buffer plate, and the buffer plate is used to receive the upper conductive arm after the opening of the switch is completed.

[0008] According to some embodiments of the present invention, the driving mechanism includes an operating box, a vertical connecting rod, an operating insulator, a rotating sleeve and a driven mechanism connected to the rotating sleeve; the rotating sleeve, the operating insulator and the vertical connecting rod are coaxial and vertically arranged, and the operating insulator is arranged between the rotating sleeve and the vertical connecting rod; the operating box is connected to the vertical connecting rod and can drive the vertical connecting rod to rotate, thereby driving the operating insulator and the rotating sleeve to rotate, and then driving the driven mechanism connected to the rotating sleeve to move; the driven mechanism is connected to the rotating seat, and the movement of the driven mechanism drives the rotating seat to rotate.

[0009] According to some embodiments of the present invention, the driven mechanism includes a crank arm and a transmission connecting rod, one end of the crank arm is connected to the rotating sleeve, and the other end of the crank arm is ball-connected to the transmission connecting rod; the rotating seat is provided with a connecting plate, and the connecting plate is ball-connected to the end of the transmission connecting rod away from the crank arm; the horizontal rotation of the rotating sleeve can transmit the connecting plate to rotate in a vertical plane.

[0010] According to some embodiments of the present invention, a gear is provided at one end of the upper conductive arm and is meshed with the rack pull rod. When the rack pull rod moves relative to the lower conductive arm, it can drive the gear to rotate, thereby driving the upper conductive arm to rotate around the hinge between it and the lower conductive arm; a moving contact is installed at the other end of the upper conductive arm, and the moving contact is used to clamp the columnar conductor.

[0011] According to some embodiments of the present invention, the rack pull rod is hinged to the main tool seat through an adjustable connecting rod, and a roller is provided at the end of the adjustable connecting rod away from the main tool seat, and the roller is hinged to the rack pull rod; the roller can reduce the friction when the rack pull rod moves relative to the lower conductive arm.

[0012] According to some embodiments of the present invention, the base includes a buffer device, which is arranged at one end of the main tool holder and partially extends outward from the base. The buffer device is used to support the lower conductive arm when opening the switch, thereby reducing the opening movement speed and avoiding opening impact.

[0013] According to some embodiments of the present invention, the buffer device includes a spring support, a buffer spring and a spring guide rod; the spring support is fixedly connected to the base, and the lower end of the buffer spring is against the upper surface of the spring support; the spring guide rod can be pressed onto the upper end of the buffer spring and extend downward through the spring support, and the lower end of the spring guide rod extending out of the spring support is equipped with a locking nut.

[0014] According to some embodiments of the present invention, the base includes a pedestal, a support insulator, and a bracket. The bracket is provided below the pedestal to provide rigid support for the pedestal. The support insulator is installed between the pedestal and the base to support the base.

[0015] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and examples.

[0017] Figure 1 This is a schematic structural diagram of the present invention in a closed state;

[0018] Figure 2 This is a structural diagram of the present invention in the open state

[0019] Figure 3 It is a partial enlarged view of the present invention;

[0020] Figure 4 It is a partial enlarged view of the present invention;

[0021] Figure 5 yes Figure 3 Enlarged view of point A in the middle;

[0022] Figure 6 yes Figure 4 Enlarged view of point B in the middle;

[0023] Figure 7 It is a schematic structural diagram of the buffer device of the present invention;

[0024] Figure 8 is a cross-sectional view of the lower conductive arm of the present invention;

[0025] Figure 9 It is a structural schematic diagram of the static contact of the present invention.

[0026] Reference numerals:

[0027] Base 100, main tool holder 110, pull rod holder 120, rotating seat 130, shaft sleeve 131, connecting plate 132, buffer plate 133, adjustable connecting rod 140, roller 141, rotating sleeve 150, crank arm 151, transmission connecting rod 160, intermediate pressure equalizing ring 170, and limit bolt 180;

[0028] Conductive arm 200, upper conductive arm 210, gear 211, lower conductive arm 220, electric arm grading ring 230;

[0029] Moving contact 310, static contact 320, tube clamp 321, conductive plate 322, aluminum stranded wire 323, aluminum wire clamp 324, conductive clamp 325, static contact rod 326, clamping plate 327, contact grading ring 328, mounting piece 329;

[0030] Rack pull rod 400, balance spring 410, adjustment sleeve 420, fixing sleeve 430;

[0031] Buffer device 500, spring support 510, buffer spring 520, spring inner column 530, spring guide rod 540, guide rod 541, pressure regulating cover plate 542;

[0032] Base 600 , post insulator 610 , operating insulator 620 , bracket 630 , vertical connecting rod 640 , operating box 650 . DETAILED DESCRIPTION

[0033] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0035] 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.

[0036] like Figures 1 to 6 As shown, the single-column vertical telescopic high-voltage disconnector according to an embodiment of the present invention includes a base 100 , a conductive arm 200 and a rack pull rod 400 .

[0037] The base 100 is provided with intermediate equalizing rings 170 on both sides. The intermediate equalizing rings 170 can evenly distribute the high voltage around the object, ensuring that there is no potential difference between the various parts of the ring, and is used to prevent side lightning strikes. The conductive arm 200 includes an upper conductive arm 210 and a lower conductive arm 220, and the upper conductive arm 210 and the lower conductive arm 220 are hinged. The lower conductive arm 220 and the upper conductive arm 210 both have two states: closed and open. The end of the lower conductive arm 220 away from the upper conductive arm 210 is hinged to the base 100. The lower conductive arm 220 is connected to a driving mechanism that can drive it to rotate around the hinge connected to the base 100 to achieve switching between the open and closed states. Specifically, electric arm equalizing rings 230 are also provided on both sides of the hinge between the lower conductive arm 220 and the upper conductive arm 210 to reduce the unevenness of the electric field and improve the insulation performance of the disconnector. In the closed state, both the lower conductive arm 220 and the upper conductive arm 210 are in a vertical position. When the lower conductive arm 220 switches from the closed state to the open state under the drive mechanism, the lower conductive arm 220 rotates around its hinge with the base 100, gradually turning from a vertical position to a parallel position. As the lower conductive arm 220 rotates, the upper conductive arm 210 also rotates and collapses around the hinge between the two. To better protect the upper conductive arm 210 and the rationality of the opening movement, during the opening movement, the upper conductive arm 210 rotates in the opposite direction to the lower conductive arm 220. Finally, the lower conductive arm 220 is horizontally placed under the support of the base 100, and the upper conductive arm 210 is horizontally collapsed onto the lower conductive arm 220, completing the opening action. Compared with double-post or three-post disconnectors, the single-post conductive arm 200 of the present invention can effectively reduce the floor space and improve land utilization.

[0038] In some embodiments of the present invention, the rack pull rod 400 is inserted into the lower conductive arm 220, one end of which is hinged to the base 100 and the hinge axis and the hinge axis between the lower conductive arm 220 and the base 100 are staggered, and the other end is transmission-connected to the upper conductive arm 210; when the lower conductive arm 220 is driven by the driving mechanism to switch to the open state, it can drive the rack pull rod 400 to move relative to the lower conductive arm 220, and then drive the upper conductive arm 210 to move to the open state. Specifically, the lower conductive arm 220 is a hollow cylinder, internally housing a balancing spring 410, an adjustment sleeve 420, and a fixing sleeve 430. Two balancing springs 410 are provided, each axially extending through the lower conductive arm 220. The adjustment sleeve 420 is positioned between the two balancing springs 410 to connect them. The fixing sleeve 430 is positioned at the end of the balancing springs 410 away from the lower conductive arm 220 to axially limit the balancing springs. The lower conductive arm 220 provides radial support and axial protection for the balancing springs 410 within it. A rack pull rod 400 extends axially through the middle of the balancing springs 410, with one end hinged to the base 100 and the other end in transmission connection with the upper conductive arm 210. Since the hinge point between the lower conductive arm 220 and the base 100 is inconsistent with the hinge position between the rack pull rod 400 and the base 100, when the lower conductive arm 220 switches from the closed position to the open position, the rack pull rod 400 will be able to move relative to the lower conductive arm 220, driving the upper conductive arm 210 to switch to the open state and compress the balance spring 410; conversely, when the lower conductive arm 220 switches from the open state to the closed state, the balance spring 410 releases its elastic potential energy to drive the rack pull rod 400 to drive the upper conductive arm 210 to move to the closed state.

[0039] In some embodiments of the present invention, Figure 3 、 Figure 8 As shown, an upwardly extending main tool seat 110 is provided at one end of the base 100, and a rotating seat 130 is connected to the end of the lower conductive arm 220 away from the upper conductive arm 210. The rotating seat 130 and the rack pull rod 400 are staggered and hinged on the main tool seat 110. Specifically, the main tool seat 110 is two vertical plates extending upward from one end of the base 100. The two vertical plates are spaced apart, and a pull rod seat 120 is provided in the middle of the space. The pull rod seat 120 is lower than the main tool seat 110. The rack pull rod 400 is hinged to the pull rod seat 120, and the rotating seat 130 is hinged to the main tool seat 110 through a shaft sleeve 131; the shaft sleeve 131 is a hollow cylinder with its two ends respectively mounted on the two vertical plates of the main tool seat 110. The rotating seat 130 can rotate with the shaft sleeve 131 under the drive of the driving mechanism.

[0040] In some embodiments of the present invention, the rotating base 130 is provided with a buffer plate 133, which is used to support the upper conductive arm 210 after the circuit breaker is opened. Specifically, when in the open state, the upper conductive arm 210 is horizontally folded onto the lower conductive arm 220, with the end away from the lower conductive arm 220 resting on the buffer plate 133, thereby protecting the upper conductive arm 210.

[0041] In some embodiments of the present invention, the driving mechanism includes an operating box 650, a vertical connecting rod 640, an operating insulator 620, a rotating sleeve 150 and a driven mechanism connected to the rotating sleeve 150; the rotating sleeve 150, the operating insulator 620 and the vertical connecting rod 640 are coaxial and vertically arranged, the rotating sleeve 150 is arranged on the end of the base 100 away from the main tool holder 110, the operating insulator 620 is arranged at the lower part of the rotating sleeve 150, one end of the operating insulator 620 is connected to the rotating sleeve 150, and the other end is connected to the vertical connecting rod 640, and the end of the vertical connecting rod 640 away from the operating insulator 620 is connected to the operating box 650; the operating box 650 can drive the vertical connecting rod 640 to rotate, thereby driving the operating insulator 620 and the rotating sleeve 150 to rotate, and then driving the driven mechanism connected to the rotating sleeve 150 to move; the driven mechanism is connected to the rotating seat 130, and the movement of the driven mechanism can drive the rotating seat 130 to rotate.

[0042] In some embodiments of the present invention, the driven mechanism includes a crank arm 151 and a transmission link 160. One end of the crank arm 151 is connected to the radial circumference of the rotating sleeve 150, and the other end of the crank arm 151 is ball-jointed with the transmission link 160. The rotating seat 130 is provided with a connecting plate 132. One end of the connecting plate 132 is fixedly connected to the shaft sleeve 131 in a radial direction, and the other end is ball-jointed with the end of the transmission link 160 away from the crank arm 151. The operating box 650 drives the rotating sleeve 150 to rotate horizontally, thereby driving the transmission link 160 to perform a compound motion away from the main tool holder 110, thereby rotating the connecting plate 132 in a vertical plane. Specifically, the operating box 650 can drive the rotating sleeve 150 to rotate horizontally 180 degrees. During the opening operation, after the rotating sleeve 150 rotates 180 degrees in one direction, the conductive arm 200 completes the opening operation. When the closing operation is required, the rotating sleeve 150 rotates 180 degrees in the direction opposite to the rotation direction during the opening operation. In addition, a limit bolt 180 is provided on one side of the rotating sleeve 150. There are two limit bolts 180 and they are arranged on the same side of the rotating sleeve 150, which respectively determine the starting point and end point of the opening and closing action of the rotating sleeve 150, so as to avoid damage to the equipment caused by excessive rotation of the rotating sleeve 150.

[0043] In some embodiments of the present invention, a gear 211 is provided at one end of the upper conductive arm 210 and is meshed with a rack pull rod 400. Specifically, a gear 211 is hingedly connected to the end of the upper conductive arm 210 near the lower conductive arm 220, and a rack is provided at the end of the rack pull rod 400 near the upper conductive arm 210 and is meshed with the gear 211. When the rack pull rod 400 moves relative to the lower conductive arm 220, it can drive the gear 211 to rotate, thereby driving the upper conductive arm 210 to rotate around the hinge with the lower conductive arm 220. A moving contact 310 is installed at the other end of the upper conductive arm 210. The moving contact 310 is used to clamp the columnar conductor. Specifically, the columnar conductor is a static contact 320, such as Figure 9 As shown, the static contact 320 includes a tube clamp 321, a conductive plate 322, an aluminum stranded wire 323, an aluminum wire clamp 324, a conductive clamp 325, a static contact rod 326, a clamping plate 327, a contact equalizing ring 328, and a mounting member 329. The tube clamp 321 is mounted on the conductive plate 322 and fixedly connected to the conductor. The aluminum wire clamp 324 is fixed to the conductive plate 322 at both ends, parallel to the conductor. The aluminum wire clamp 324 is crimped onto the upper end of the aluminum stranded wire 323, which is a steel-cored aluminum stranded wire. The lower end of the aluminum stranded wire 323 is assembled to the static contact rod 326 via the conductive clamp 325. The static contact rod 326 is cylindrical and spaced parallel to the conductive plate 322, perpendicular to the direction of the conductor extension. The axial ends of the static contact rod 326 are fixedly connected to the lower end of the contact equalizing ring 328. When the switch is closed, the moving contact 310 is clamped to the static contact rod 326. Conductive plate 322 is parallel to both ends of the conductor and outside the aluminum wire clamp 324. Mounting piece 329 is also fixedly mounted on it. Mounting piece 329 extends from conductive plate 322 toward stationary contact rod 326. Clamping plate 327 is provided on the inner ring of contact grading ring 328. This clamping plate 327 secures contact grading ring 328 to mounting piece 329. The mounting position can be adjusted at any time based on the size of the coils of steel-core aluminum stranded wire 323. The contact grading ring 328 uses a 200mm diameter tube, which effectively reduces electric field unevenness and significantly improves the insulation performance of the disconnector.

[0044] In some embodiments of the present invention, Figure 6 、 Figure 8 As shown, the rack rod 400 is hingedly connected to the main tool holder 110 via an adjustable connecting rod 140. A roller 141 is provided at the end of the adjustable connecting rod 140 away from the main tool holder 110. The roller 141 is hingedly connected to the rack rod 400. The roller 141 and the rack rod 400 are both mounted within the lower conductive arm 220, and the annular surface of the roller 141 contacts the inner wall of the lower conductive arm 220. Therefore, the roller 141 can center the rack rod 400 and reduce friction when the rack rod 400 moves relative to the lower conductive arm 220.

[0045] In some embodiments of the present invention, the base 100 includes a buffer device 500, which is arranged at one end of the main tool holder 110 and partially extends outward from the base 100. The buffer device 500 is used to support the lower conductive arm 220 when opening the switch, thereby reducing the opening movement speed and avoiding opening impact.

[0046] In some embodiments of the present invention, Figure 7 As shown, the buffer device 500 includes a spring support 510, a buffer spring 520 and a spring guide rod 540; the spring support 510 is fixedly connected to the base 100, and the lower end of the buffer spring 520 is against the upper surface of the spring support 510; the spring guide rod 540 can be pressed onto the upper end of the buffer spring 520 and extend downward through the spring support 510, and the lower end of the spring guide rod 540 extending out of the spring support 510 is equipped with a locking nut. Specifically, the buffer device 500 also includes a spring inner column 530, which is axially installed in the buffer spring 520 and abuts against the upper surface of the spring support 510; the spring guide rod 540 includes a guide rod 541 and a pressure-adjusting cover plate 542, the guide rod 541 and the pressure-adjusting cover plate 542 are fixedly connected, the pressure-adjusting cover plate 542 is pressed on the upper end of the buffer spring 520, and the guide rod 541 extends downward through the spring inner column 530 and the spring support 510, and extends out of the spring support 510; the locking nut is used to control the initial compression length of the buffer spring 520. During the opening movement, the lower end of the lower conductive arm 220 presses against the spring guide rod 540 to compress the buffer spring 520, thereby reducing the rotation speed of the lower conductive arm 220, which in turn affects the rotation speed of the upper conductive arm 210, thereby reducing the overall opening speed; when the buffer spring 520 is compressed to the contact position between the spring guide rod 540 and the spring inner column 530, the spring guide rod 540 provides rigid support for the lower conductive arm 220.

[0047] In some embodiments of the present invention, a single-pole vertical telescopic high-voltage disconnector further includes a base 600, a post insulator 610, and a bracket 630. The bracket 630 is disposed below the base 600 to provide rigid support for the base 600. The post insulator 610 is installed between the base 600 and the base 100 to support the base 100. Specifically, the present invention is applicable to 800kV ultra-high voltage transmission lines. Because the main switch arm of a high-current 800kV vertical disconnector is long and heavy, high insulator rigidity is required during opening and closing. A single-pole post insulator 610 cannot meet these requirements. Therefore, a two-pole post insulator 610 is used to support the main switch, ensuring that the main switch remains stable and reliable during opening and closing. The two-column support insulator 610 is arranged at one end of the base 600, and is arranged above the bracket 630 and below the main tool holder 110; the operating insulator 620 is arranged on the end of the base 600 away from the support insulator 610, and the vertical connecting rod 640 is arranged below the base 600 and connected to the operating box 650. The operating box 650 is radially connected to the bracket 630, and the bracket 630 supports and fixes the operating box 650.

[0048] The working principle of this device:

[0049] The bracket 630 and the vertical connecting rod 640 are both axially arranged below the base 600. The bracket 630 supports the upper device of the base 600. At the same time, the bracket 630 is radially connected to the operating box 650 to fix the position of the operating box 650; the lower end of the vertical connecting rod 640 is connected to the operating box 650, and the operating box 650 can drive the vertical connecting rod 640 to rotate axially. The upper end of the base 600 is equipped with a post insulator 610 and an operating insulator 620. Both post insulators 610 and operating insulators 620 are cylindrical and gradually narrow from bottom to top. Two post insulators 610 are located at the upper end of the bracket 630. The upper end of the post insulator 610 is connected to the base 100, providing support for the base 100. The operating insulator 620 is located at the upper end of the vertical connecting rod 640 and is connected to the vertical connecting rod 640. The base 600 supports the connection between the vertical connecting rod 640 and the operating insulator 620. The rotation of the vertical connecting rod 640 can drive the operating insulator 620 to rotate synchronously. The upper portion of the base 100 is equipped with a main tool holder 110 and a rotating sleeve 150. The main tool holder 110 is located above the post insulator 610 and has a connecting rod holder hinged to the rack pull rod 400. The main tool holder 110 is hinged to the lower conductive arm 220 via a rotating seat 130. The rotating base 130 is fixedly connected to the lower conductive arm 220. The rotating base 130 is provided with a shaft sleeve, which is hinged to the main tool holder 110 via the shaft sleeve. The shaft sleeve is radially provided with a connecting plate 132 extending downward. The connecting plate 132 is used to connect the rotating sleeve 150. The rotating sleeve 150 is located above the operating insulator 620 and is connected to the operating insulator 620. When the operating insulator 620 rotates under the drive of the vertical connecting rod 640, it can drive the rotating sleeve 150 to rotate horizontally along its own axis. It should be noted that the rotating sleeve 150 can only rotate 180 degrees, and the rotation directions of the opening and closing are opposite. A limit bolt 180 is also provided on one side of the rotating sleeve 150 to fix the starting and ending points of the rotating sleeve 150, ensuring that the rotation angle of the rotating sleeve 150 is not too large to damage the equipment. The radial surface of the rotating sleeve 150 is fixedly connected to one end of the crank arm 151 . The other end of the crank arm 151 is ball-connected to the transmission connecting rod 160 . The end of the transmission connecting rod 160 away from the crank arm 151 is ball-connected to the connecting plate 132 .

[0050] like Figure 1As shown, the device is in the closed state. To open the circuit, the operating box 650 first drives the vertical connecting rod 640 to rotate, which in turn drives the operating insulator 620 and the rotating sleeve 150 to rotate. The horizontal rotation of the rotating sleeve 150 drives the transmission connecting rod 160 to perform a compound motion and move away from the main tool holder 110, thereby driving the connecting plate 132 to rotate in the vertical plane. The connecting plate 132 is fixedly connected to the shaft sleeve 131, thereby driving the rotating seat 130 to rotate with the shaft sleeve 131, and in turn driving the lower conductive arm 220 to rotate. Since the rack pull rod 400 is arranged in the lower conductive arm 220 and the rack pull rod 400 is hinged on the connecting rod seat, which is inconsistent with the hinge position of the rotating seat 130, the rack pull rod 400 will produce a displacement relative to the lower conductive arm 220 when it rotates synchronously with the lower conductive arm 220; since the rack pull rod 400 is meshed with the gear 211 of the upper conductive arm 210, when the rack pull rod 400 moves relative to the lower conductive arm 220, it will drive the upper conductive arm 210 to rotate around the hinge with the lower conductive arm 220, and the moving contact 310 on the upper conductive arm 210 will move obliquely downward and then rotate to disengage from the static contact 320 to achieve disconnection and power off. In addition, the rotation direction of the upper conductive arm 210 is set to be opposite to the rotation direction of the lower conductive arm 220, and finally achieve the following Figure 2 In the open state shown, the lower conductive arm 220 is horizontally supported by the base 100, and the upper conductive arm 210 is horizontally folded on the lower conductive arm 220. To reduce the impact of opening the switch and protect the upper conductive arm 210, the base 100 is equipped with a buffer device 500 to reduce the rotation speed of the lower conductive arm 220 during opening. At the same time, the rotating base 130 is equipped with a buffer plate 133 to support the end of the upper conductive arm 210 away from the lower conductive arm 220, protecting the upper conductive arm 210 and the movable contact 310.

[0051] like Figure 2 As shown, the device is in the open state. To close the circuit breaker from the open state, the operating box 650 first drives the vertical connecting rod 640 to rotate in the opposite direction, which in turn drives the rotating sleeve 150 to rotate in the opposite direction, driving the transmission connecting rod 160 to move toward the main tool holder 110. This in turn causes the connecting plate 132 to rotate in the direction opposite to the open state, driving the lower conductive arm 220 to gradually rotate from a horizontal position to a vertical position. A balancing spring 410 is installed within the lower conductive arm 220. During the opening movement, the rack pull rod 400 moves relative to the lower conductive arm 220, compressing the balancing spring 410. During the closing movement, the balancing spring 410 releases its elastic potential energy, driving the rack pull rod 400 and the lower conductive arm 220 to move relative to each other, thereby driving the upper conductive arm 210 from a horizontal position to a vertical position. When the upper conductive arm 210 moves to the closed position, the moving contact 310 clamps onto the static contact 320, completing the circuit.

[0052] Throughout this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" indicate that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above 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.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A single-column vertical telescopic high-voltage disconnect switch, characterized in that: include: A base (100) having a main tool seat (110) extending upward at one end; The conductive arm (200) comprises an upper conductive arm (210) and a lower conductive arm (220), wherein the upper conductive arm (210) and the lower conductive arm (220) are hinged; the lower conductive arm (220) and the upper conductive arm (210) both have two states: a closed state and an open state; an end of the lower conductive arm (220) away from the upper conductive arm (210) is hinged to the base (100), and the lower conductive arm (220) is connected to a driving mechanism capable of driving the lower conductive arm to rotate around a hinge connected to the base (100) to achieve switching between the open and closed states; A rack pull rod (400) is inserted into the lower conductive arm (220), one end of which is hinged to the base (100) and the hinge axis is staggered with the hinge axis between the lower conductive arm (220) and the base (100), and the other end is transmission-connected to the upper conductive arm (210); when the lower conductive arm (220) is driven by the driving mechanism to switch to the open state, it can drive the rack pull rod (400) to move relative to the lower conductive arm (220), thereby driving the upper conductive arm (210) to switch to the open state; Wherein, one end of the lower conductive arm (220) away from the upper conductive arm (210) is connected to a rotating seat (130), and the rotating seat (130) and the rack pull rod (400) are staggered and hinged on the main knife seat (110); the rack pull rod (400) is hinged to the main knife seat (110) through an adjustable connecting rod (140), and one end of the adjustable connecting rod (140) away from the main knife seat (110) is provided with a roller (141), and the roller (141) is hinged to the rack pull rod (400); the roller (141) can reduce the friction when the rack pull rod (400) moves relative to the lower conductive arm (220); The base (100) includes a buffer device (500), which is provided at one end of the main tool holder (110) and partially extends outward from the base (100). The buffer device (500) is used to support the lower conductive arm (220) when opening the switch, thereby reducing the opening movement speed and avoiding opening shock.

2. The single-column vertical telescopic high-voltage disconnector according to claim 1, characterized in that: The rotating seat (130) is provided with a buffer pad (133), and the buffer pad (133) is used to receive the upper conductive arm (210) when in an open state.

3. The single-column vertical telescopic high-voltage disconnector according to claim 1, characterized in that: The driving mechanism comprises an operating box (650), a vertical connecting rod (640), an operating insulator (620), a rotating sleeve (150), and a driven mechanism connected to the rotating sleeve (150); the rotating sleeve (150), the operating insulator (620), and the vertical connecting rod (640) are coaxial and vertically arranged, and the operating insulator (620) is arranged between the rotating sleeve (150) and the vertical connecting rod (640); the operating box (650) is connected to the vertical connecting rod (640) and can drive the vertical connecting rod (640) to rotate, thereby driving the operating insulator (620) and the rotating sleeve (150) to rotate, and then driving the driven mechanism connected to the rotating sleeve (150) to move; the driven mechanism is connected to the rotating seat (130), and the movement of the driven mechanism can drive the rotating seat (130) to rotate.

4. The single-column vertical telescopic high-voltage disconnector according to claim 3, characterized in that: The driven mechanism comprises a crank arm (151) and a transmission connecting rod (160), one end of the crank arm (151) is connected to the rotating sleeve (150), and the other end of the crank arm (151) is ball-jointed with the transmission connecting rod (160); the rotating seat (130) is provided with a connecting plate (132), and the connecting plate (132) is ball-jointed with an end of the transmission connecting rod (160) away from the crank arm (151); the horizontal rotation of the rotating sleeve (150) can drive the connecting plate (132) to rotate in a vertical plane.

5. The single-column vertical telescopic high-voltage disconnector according to claim 1, characterized in that: One end of the upper conductive arm (210) is provided with a gear (211) meshingly connected with the rack pull rod (400); when the rack pull rod (400) moves relative to the lower conductive arm (220), it can drive the gear (211) to rotate, thereby driving the upper conductive arm (210) to rotate around the hinge between it and the lower conductive arm (220); the other end of the upper conductive arm (210) is provided with a moving contact (310), and the moving contact (310) is used to clamp the columnar conductor.

6. The single-column vertical telescopic high-voltage disconnector according to claim 1, characterized in that: The buffer device (500) includes a spring support (510), a buffer spring (520) and a spring guide rod (540); the spring support (510) is fixedly connected to the base (100), and the lower end of the buffer spring (520) is against the upper surface of the spring support (510); the spring guide rod (540) can be pressed onto the upper end of the buffer spring (520) and extend downward through the spring support (510), and a locking nut is installed at the lower end of the spring guide rod (540) extending out of the spring support (510).

7. The single-column vertical telescopic high-voltage disconnector according to claim 1, characterized in that: The invention comprises a base (600), a support insulator (610) and a bracket (630), wherein the bracket (630) is arranged below the base (600) to rigidly support the base (600), and the support insulator (610) is installed between the base (600) and the pedestal (100) to support the pedestal (100).

Images