A static contact of a vertically-opening high-voltage disconnector and a structure of an attached voltage equalizing device

Abstract

The present invention discloses a static contact of a vertically-opening type high-voltage disconnector and a structure of an attached voltage equalizing device, including: a static contact assembly, the static contact assembly includes a contact and a guiding cover, the guiding cover is in a horn shape, a conductive plate is provided at the top of the guiding cover, the contact is inserted into the guiding cover and is in electrical contact with the conductive plate; a conductive strip assembly, including two conductive strips connected to both sides of the conductive plate, one end of the conductive strip is connected to the conductive plate and the other end is connected to the busbar; a busbar voltage equalizing ring assembly, including two busbar voltage equalizing rings oppositely arranged on the busbar, the two busbar voltage equalizing rings are arranged outside the connection position of the conductive strip and the busbar; a conductive plate voltage equalizing ring assembly, including two conductive plate voltage equalizing rings oppositely arranged on both sides of the connection position of the conductive strip and the conductive plate; voltage equalizing ring assemblies of the guiding cover are provided on both sides of the guiding cover. It can achieve the purpose of optimizing the electric field intensity around the vertically-opening type disconnector and reducing the radio interference level of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment, and particularly to a static contact of a vertically-opening high-voltage disconnector and a structure of an attached voltage equalizing device. Background Art

[0002] Vertically-opening disconnectors directly use the vertical space below the overhead busbar as the electrical insulation of the disconnection port, and are widely used in substations. Due to the high electric field brought by high voltage, electrical equipment such as disconnectors with a high voltage level of 220 kV and above are often equipped with voltage equalizing rings of a certain pipe diameter at parts with many corners and complex structures. The voltage equalizing ring can evenly distribute the high voltage around the object, shield the prominent electric field intensity caused by internal sharp corners, ensure that there is no potential difference between various parts of the ring, so as to optimize the electric field intensity around the equipment and reduce the radio interference level of the equipment.

[0003] Due to the large number of functional components and metal fittings at the installation position of the static contact of the vertically-opening disconnector, the electric field intensity is relatively complex. Especially for ultra-high voltage and extra-high voltage disconnectors with a high voltage level, it is necessary to reasonably design and equip a voltage equalizing device without affecting the normal opening and closing actions of the disconnector, in order to meet the requirements of equipment functions, control equipment costs, meet the manufacturing process of the voltage equalizing ring, facilitate the installation of the voltage equalizing device, and achieve good voltage equalizing effects.

[0004] The existing common configuration method of the voltage equalizing device is: only using a pair of pipe-shaped ring voltage equalizing rings, and meeting the requirements for the field intensity by controlling the diameter of the pipe and the size of the ring. The disadvantages of this method are mainly manifested in that the increase in the diameter of the pipe and the size of the ring cannot quickly meet the requirements of some special and complex positions, and finally result in an oversized voltage equalizing device and an increase in cost. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present invention provides a static contact of a vertically-opening high-voltage disconnector and a structure of an attached voltage equalizing device, which can achieve the purpose of optimizing the electric field intensity around the vertically-opening disconnector and reducing the radio interference level of the equipment.

[0006] The technical solution adopted by the present invention is: a static contact of a vertically-opening high-voltage disconnector and a structure of an attached voltage equalizing device, including:

[0007] The static contact assembly, the static contact assembly includes a contact and a guiding cover, the guiding cover is in a horn shape, a conductive plate is provided at the top of the guiding cover, and the contact is inserted into the guiding cover and is in electrical contact with the conductive plate;

[0008] The conductive strip assembly, including two conductive strips connected to both sides of the conductive plate, one end of the conductive strip is connected to the conductive plate, and the other end is connected to the busbar;

[0009] The busbar grading ring assembly includes two busbar grading rings oppositely arranged on the busbar, and the two busbar grading rings are arranged outside the connection position of the conductive band and the busbar;

[0010] The conductive plate grading ring assembly includes two conductive plate grading rings oppositely arranged on both sides of the connection position of the conductive band and the conductive plate;

[0011] Grading ring assemblies are provided on both sides of the guiding cover.

[0012] Further optimization: The guiding cover grading ring assembly includes a pair of guiding cover grading rings, a connecting plate and adjustable pull plates. The two adjustable pull plates are vertically arranged on both sides of the guiding cover. Different-height mounting holes are provided on the vertical adjustable pull plates. The connecting plate is mounted on the adjustable pull plates through the mounting holes. The two guiding cover grading rings are mounted on the connecting plate and are oppositely arranged on both sides of the guiding cover.

[0013] Further optimization: The two guiding cover grading rings are arranged obliquely upward.

[0014] Further optimization: The busbar grading ring includes an upper half grading ring and a lower half grading ring. The upper half grading ring and the lower half grading ring clamp the busbar, and the opposite ends of the upper half grading ring and the lower half grading ring are connected by a screw.

[0015] Further optimization: The conductive band and the busbar are connected by a clamp to adapt to different busbar types.

[0016] Further optimization: The flared end of the guiding cover is a curled edge.

[0017] A static contact of a vertically-opening type high-voltage disconnector and an attached grading device structure according to an embodiment of the present invention has at least the following beneficial effects:

[0018] 1. The static contact adopts an insertion structure, and the contact is completely wrapped inside the guiding cover, preventing erosion by wind and sand, having better anti-pollution ability, and better ensuring the current-carrying capacity of the equipment;

[0019] 2. The conductive plate and the busbar are connected by a conductive band to ensure the current-sharing ability of each contact part;

[0020] 3. By arranging a busbar grading ring assembly, a conductive plate grading ring assembly and a guiding cover grading ring assembly at the parts with more corners and more complex structures in the disconnector, the high voltage can be evenly distributed around the object, shielding the prominent electric field intensity caused by the internal sharp corners, ensuring that there is no potential difference between the various parts of the ring, so as to achieve the purpose of optimizing the electric field intensity around the equipment and reducing the radio interference level of the equipment. Description of the Drawings

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0022] Figure 1 FIG. 4 is a front structural schematic diagram of the static contact and attached voltage equalizing device structure of the vertically-opening type high-voltage disconnector according to an embodiment of the present invention;

[0023] Figure 2 FIG. 8 is a side structural schematic diagram of the static contact and attached voltage equalizing device structure of the vertically-opening type high-voltage disconnector;

[0024] Figure 3 FIG. 12 is a top view of the static contact and attached voltage equalizing device structure of the vertically-opening type high-voltage disconnector;

[0025] Figure 4 FIG. 16 is a three-dimensional view of the static contact and attached voltage equalizing device structure of the vertically-opening type high-voltage disconnector;

[0026] Figure 5 FIG. 20 is Figure 1 a partial enlarged schematic diagram of part A at the bell mouth of the guiding cover in FIG. 20. Detailed Embodiments

[0027] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by terms such as up, down, front, back, left, right, etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for facilitating the description of 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 thus should not be construed as limiting the present invention.

[0029] In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is two or more. Understandings such as "greater than", "less than", "exceeding", etc. do not include the recited number, and understandings such as "above", "below", "within", etc. include the recited number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0031] Refer to Figures 1 to 4 the structure of the static contact of the vertically-opening type high-voltage disconnector and the attached grading device shown in the figure, including:

[0032] The static contact assembly includes a contact 110 and a guide cover 120. The guide cover 120 is in a horn shape, and a conductive plate 121 is provided at the top of the guide cover 120. The contact 110 is inserted into the guide cover 120 and is in electrical contact with the conductive plate 121;

[0033] The conductive strip assembly includes two conductive strips 200 connected to both sides of the conductive plate 121. One end of the conductive strip 200 is connected to the conductive plate 121, and the other end is connected to the busbar 300;

[0034] The busbar grading ring assembly includes two busbar grading rings 400 oppositely arranged on the busbar 300. The two busbar grading rings 400 are arranged outside the connection position of the conductive strip 200 and the busbar 300;

[0035] The conductive plate grading ring assembly includes two conductive plate grading rings 600 oppositely arranged on both sides of the connection position of the conductive strip 200 and the conductive plate 121;

[0036] Guide cover grading ring assemblies are provided on both sides of the guide cover 120.

[0037] In the vertically-opening type high-voltage disconnector of the present application, when closing, the contact 110 is inserted into the guide cover 120 until it contacts the conductive plate 121 to complete the closing. The conductive plate 121 is connected to the busbar 300 through the conductive strip 200 to ensure the current-carrying capacity of each contact part.

[0038] The disconnector adopts an insertion structure, and the contact 110 is completely wrapped inside the guide cover 120, preventing the contact 110 from being eroded by wind and sand, having better anti-pollution ability, and better ensuring the current-carrying capacity of the equipment.

[0039] By arranging the busbar grading ring assembly, the conductive plate grading ring assembly and the guide cover grading ring assembly at the parts with more edges and corners and more complex structures in the disconnector, the high voltage can be evenly distributed around the object, shielding the prominent electric field intensity caused by the internal sharp corners, ensuring that there is no potential difference between each part of the ring, so as to optimize the electric field intensity around the equipment and reduce the radio interference level of the equipment.

[0040] Among them, the guide cover equalizing ring assembly includes a pair of guide cover equalizing rings 510, a connecting plate 520 and a set of adjustable pull plates 530. The two adjustable pull plates 530 are vertically arranged on both sides of the guide cover 120. Different-height mounting holes 531 are provided vertically on the adjustable pull plates 530. The connecting plate 520 is mounted on the adjustable pull plates 530 through the mounting holes 531. The two guide cover equalizing rings 510 are mounted on the connecting plate 520 and are oppositely arranged on both sides of the guide cover 120.

[0041] In a high-voltage disconnector, generally there is a basic requirement for the insertion depth between the contacts of the disconnector in the closing position, which should be greater than a certain value. However, errors generated during production and on-site assembly will affect the actual depth. In this embodiment, a set of equally spaced mounting holes 531 are arranged on the adjustable pull plates 530, and the connecting plate 520 can adjust the mounting height of the guide cover equalizing ring 510 by selecting mounting holes 531 with different heights.

[0042] Such as Figure 1 shown, the two guide cover equalizing rings 510 are inclined upward. The inclined upward arrangement of the two guide cover equalizing rings 510 is more optimized than the vertical arrangement. A smaller equalizing ring 510 can complete the shielding function, optimizing the layout of the equalizing rings.

[0043] The busbar equalizing ring 400 includes an upper half equalizing ring 410 and a lower half equalizing ring 420. The upper half equalizing ring 410 and the lower half equalizing ring 420 are clamped on the busbar 300, and the relative ends of the upper half equalizing ring 410 and the lower half equalizing ring 420 are connected by screws.

[0044] In this embodiment, the busbar equalizing ring 400 is composed of an upper half equalizing ring 410 and a lower half equalizing ring 420. The upper half equalizing ring 410 and the lower half equalizing ring 420 are installed on the busbar 3 in a clamping manner. This installation method can adapt to different busbar types.

[0045] Similarly, the conductive band 200 and the busbar 300 are connected by a clamp 700 to adapt to different types of busbars 300.

[0046] Such as Figure 5 shown, the flared end of the guide cover 120 is a curled edge. The flared end of the guide cover 120 uses a curling process, making itself have a certain equalizing effect.

[0047] Of course, the present invention is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present invention. These equivalent deformations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A static contact of a vertically-opening high-voltage disconnector and a structure of an attached voltage equalizing device, characterized in that, Comprising: Static contact general assembly, the static contact general assembly includes a contact and a guiding cover, the guiding cover is in a horn shape, a conductive plate is provided at the top of the guiding cover, and the contact is inserted into the guiding cover and is in electrical contact with the conductive plate; Conductive strip assembly, including two conductive strips connected to both sides of the conductive plate, one end of the conductive strip is connected to the conductive plate, and the other end is connected to the busbar; Busbar grading ring assembly, including two busbar grading rings oppositely arranged on the busbar, and the two busbar grading rings are arranged outside the connection position of the conductive strip and the busbar; Conductive plate grading ring assembly, including two conductive plate grading rings oppositely arranged on both sides of the connection position of the conductive strip and the conductive plate; Guiding cover grading ring assemblies are provided on both sides of the guiding cover, the guiding cover grading ring assemblies include a pair of guiding cover grading rings, a connecting plate and adjustable pull plates, the two adjustable pull plates are vertically arranged on both sides of the guiding cover, different-height mounting holes are provided on the vertical adjustable pull plates, the connecting plate is mounted on the adjustable pull plates through the mounting holes, and the two guiding cover grading rings are mounted on the connecting plate and are oppositely arranged on both sides of the guiding cover.

2. The static contact of the vertically-opening type high-voltage disconnector and the structure of the attached voltage equalizing device according to claim 1, characterized in that: The two guiding cover grading rings are arranged obliquely upward.

3. The static contact of the vertically-opening type high-voltage disconnector and the structure of the attached voltage equalizing device according to claim 1 or 2, characterized in that: The busbar grading ring includes an upper half grading ring and a lower half grading ring, the upper half grading ring and the lower half grading ring clamp the busbar, and the opposite ends of the upper half grading ring and the lower half grading ring are connected by screws.

4. The static contact of the vertically-opening type high-voltage disconnector and the structure of the attached voltage equalizing device according to claim 1 or 2, characterized in that: The conductive strip and the busbar are connected by a clamp to adapt to different busbar types.

5. The static contact of the vertically-opening type high-voltage disconnector and the structure of the attached voltage equalizing device according to claim 1 or 2, characterized in that: The flared end of the guiding cover is a curled edge.

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