CN111383851A

CN111383851A - Novel multichannel high-voltage switch device

Info

Publication number: CN111383851A
Application number: CN202010238589.4A
Authority: CN
Inventors: 郑耀华; 孙仝; 吴卫堃; 胡峰; 陈敏; 路军; 何勇; 何彧; 胡宇轩; 陈景尚
Original assignee: Guangdong Power Grid Co Ltd; Zhaoqing Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Zhaoqing Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-07-07

Abstract

The invention relates to the technical field of high-voltage test equipment, in particular to a novel multi-path high-voltage switch device. A novel multi-path high-voltage switch device comprises an insulating bottom plate arranged at the bottom and an insulating rotary table rotatably inserted above the insulating bottom plate, wherein an upright post is fixed at the edge of the insulating bottom plate; the device also comprises a nut, a baffle plate and a handle; through the nut fixed stop of fastening at the stand top, insulating carousel wholly is located between baffle and the insulating bottom plate, and the pivot of setting on insulating carousel upwards passes the baffle to fasten with the handle through the screw. The invention can overcome the defects of the prior art, change the conductor connection mode to avoid the phenomenon of sparking and discharging between conductors caused by long-time use or environmental reasons, reduce the volume of the device and realize safe and reliable line connection through large current and high voltage during cable test.

Description

Novel multichannel high-voltage switch device

Technical Field

The invention relates to the technical field of high-voltage test equipment, in particular to a novel multi-path high-voltage switch device.

Background

At present, in the cable testing process, the conversion of most high-voltage conversion switches is realized by contacting through mechanical force such as torsion, elasticity and the like, and completing conductor connection through a contact point or a contact surface to form a voltage or current path. After the cable is used for a period of time, because the contact point often passes through large current and is influenced by weather or environment, an oxide layer is formed on the contact point or the contact surface, poor contact between the two metal conductors is caused, discharge ignition is caused, the cable fault test result is influenced slightly, internal discharge of the equipment is caused seriously, and personal safety is damaged.

In view of safety, a sufficient direct breakdown distance and a sufficient creepage distance should be kept before two metal conductors with different potentials, and in order to keep sufficient electrical insulation between the two metal conductors of the conventional conversion device, only a method of increasing the distance between the metal conductors is often adopted, which inevitably causes the defects of overlarge volume, difficult installation and the like of the conversion device.

Disclosure of Invention

The invention aims to solve the technical problems at least to a certain extent, can overcome the defects of the prior art, changes the conductor connection mode to avoid the phenomenon of sparking and discharging between conductors caused by long-time use or environmental reasons, and simultaneously reduces the volume of the device. The device for completing the switching action in the rotary plugging mode is provided, and safe and reliable line connection is realized through large current and high voltage during cable testing.

The technical scheme of the invention is as follows: a novel multi-path high-voltage switch device comprises an insulating bottom plate arranged at the bottom and an insulating rotary table rotatably inserted above the insulating bottom plate, wherein an upright post is fixed at the edge of the insulating bottom plate; the device also comprises a nut, a baffle plate and a handle;

through the nut fixed stop of fastening at the stand top, insulating carousel wholly is located between baffle and the insulating bottom plate, and the pivot of setting on insulating carousel upwards passes the baffle to fasten with the handle through the screw.

In the invention, the conductor connection is completed by using the wire spring, and the insulating sheath is additionally arranged outside the wire spring to increase the creepage distance, thereby realizing the reduction of the volume requirement of the conversion device under the condition of ensuring the insulation of the electric appliance. The metal plug is arranged on the insulating turntable, and the connecting sheet is arranged on the insulating turntable to ensure the short circuit of the metal body; and a metal socket is arranged on the insulating base plate, the metal socket is fixed on the insulating sleeve, the metal socket on the insulating base plate corresponds to the metal plug on the insulating turntable, and the connection of the switch can be realized by pressing down the insulating turntable. When the switch needs to be switched, the insulating turntable is lifted, rotated by 90 degrees, and pressed down, so that the switch gear switching is realized.

A plurality of groups of connecting components matched with the inserting ports are arranged through the insulating rotary table, and any group of connecting components are inserted into the element inserting components on the insulating base plate through pulling up, rotating and pressing down the insulating rotary table; the plug-in ports are wrapped by insulating materials, and a proper distance is kept between every two plug-in ports, so that the electrical insulation of the two plug-in components under a higher voltage is ensured, and the two plug-in components do not occupy too much volume.

Preferably, the insulating bottom plate comprises a bottom plate and a lining plate fixed on the lower portion of the bottom plate, a fixed seat is arranged in the middle of the insulating bottom plate, and the insulating sheath is clamped and fixed through the bottom plate and the lining plate.

Preferably, the insulating sheath comprises a hollow insulating sleeve for increasing insulation and creepage distance between the metal sockets, and an annular boss is arranged outside the insulating sleeve and clamped between the base plate and the lining plate.

The metal socket is a hyperboloid wire spring jack, the wire spring jack is inserted from the upper end of the insulating sleeve, one end of the cable is inserted from the lower end of the insulating sleeve and welded with the jack, and the other end of the cable is connected with an external electrical element.

Preferably, the lower end of the insulating sleeve is sleeved with a sheath, and the outer part of the sheath is also provided with a cable sheath for sleeving the cable.

Preferably, the insulating rotary disc comprises a pole plate, a cover plate fixed on the upper part of the pole plate and a rotating shaft penetrating through the pole plate and the cover plate simultaneously, and the metal plug is fixed through the insulating rotary disc.

Preferably, the metal plug comprises a pin and a connecting piece for connecting the pin.

Preferably, the insulating bottom plate is rectangular, a baffle plate is fixed above the insulating bottom plate through upright posts at four corners, and the insulating rotary disc is positioned between the insulating bottom plate and the baffle plate.

Compared with the prior art, the beneficial effects are: the invention can overcome the defects of the prior art, change the conductor connection mode to avoid the phenomenon of sparking and discharging between conductors caused by long-time use or environmental reasons, reduce the volume of the device and realize safe and reliable line connection through large current and high voltage during cable test.

Drawings

Fig. 1 is a schematic structural diagram of the overall structure of a multi-path high-voltage switch.

Fig. 2 is a front view of an insulating turntable structure.

Fig. 3 is a bottom view of the insulating turntable structure.

Fig. 4 is a schematic diagram of insulation distance of the insulation turntable.

Fig. 5 is a front view of the insulating base plate.

Fig. 6 is a bottom view of the insulating base plate.

Fig. 7 is a schematic diagram of creepage distance between metal sockets of the insulating base plate.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

As shown in fig. 1, a novel multi-path high-voltage switch device comprises an insulating bottom plate 6 at the bottom and an insulating rotary table 5 rotatably inserted above the insulating bottom plate 6. The upper surface of the insulating bottom plate 6 is a rectangular surface, the four corners of the insulating bottom plate are fixed with the upright posts 4, and the baffle 2 is fixed through the nuts 3 fastened at the tops of the upright posts 4. The insulating rotary table 5 is integrally positioned between the baffle 2 and the insulating bottom plate 6, and a rotating shaft arranged on the insulating rotary table 5 upwards penetrates through the baffle 2 and is fastened with the lifting handle 1 through screws. The switching of different gears between the insulating bottom plate 6 and the insulating rotary disc 5 is completed by lifting, pulling, rotating and pressing the insulating rotary disc 5 on the lifting handle 1, so that the switching of a plurality of paths of high-voltage switches is realized.

As shown in fig. 2 to 3, the insulating turntable 5 includes a turntable 16 and a cover plate 7. The cover plate 7 and the rotary table 16 are both circular and have the same size, and the cover plate 7 is fixed on the upper part of the rotary table 16 through four screws. A circular groove is formed in the center of the upper portion of the turntable 16, and the small fixed disk 10 is placed in the groove. The rotating shaft 9 penetrates through the cover plate 7, the small fixed disk 10 and the insulating rotary disk 5 simultaneously, the small fixed disk 10 and the rotating shaft 9 are fixed through one radial screw, the small fixed disk 10 and the rotary disk 16 are fixed through four axial screws, and therefore the cover plate 7, the small fixed disk 10 and the insulating rotary disk 5 are fixed. After the insulating rotary disc 5 is inserted above the insulating bottom plate 6, the rotating shaft 9 is correspondingly inserted into the shaft sleeve 23.

Eight groups of cylindrical grooves are formed in the vertical direction of the turntable 16, and each group of cylindrical grooves comprises two cylindrical grooves which are in one-to-one correspondence with the upper positions and the lower positions. Two of the cylindrical grooves are communicated by the grooves with the same depth to form a plurality of strip-shaped grooves, and the metal plug is fixed through the strip-shaped grooves. The metal plug is composed of a contact pin, a coupling piece, a gasket nut and the like.

As shown in fig. 4, with reference to fig. 2 to 3, when the high voltage switch is electrically connected, the potentials of the two pins in the strip-shaped groove are the same, and the minimum insulation distance between the two pins in different grooves is 14.7 mm. The switch design turntable 16 is made of nylon as a main insulating material. Through tests and related data examination, the material with the distance does not have breakdown phenomenon under the DC high voltage of 50kV, and can be suitable for multi-way switches of 32kV and below.

As shown in fig. 5 to 6, the insulating base plate 6 includes an upper base plate 24 and a lower liner plate 20. The bottom plate 24 and the lining plate 20 are both rectangular and have the same size, and the lining plate 20 is fixed at the lower part of the bottom plate 24 through four fastening screws 21 at two sides. Two positioning columns 22 for limiting are further arranged on the upper surface of the bottom plate 24, wherein one positioning column is located on the left side of the bottom plate 24, and the other positioning column is located on the right side of the bottom plate 24.

Two ends of the insulating sleeve 25 respectively penetrate through the bottom plate 24 and the lining plate 20 and are clamped and fixed by the bottom plate 24 and the lining plate 20, a corresponding annular groove is formed in the contact surface of the bottom plate 24 and the lining plate 20, the insulating sleeve 25 is fixed between the bottom plate 24 and the lining plate 20 through the matching of an annular boss on the insulating sleeve 25 and the annular groove of the bottom plate 24, and the cable sheath 27 is installed outside the insulating sleeve 25.

A circular step is arranged in the inner cavity of the insulating sleeve 25, and the metal socket 26 is inserted into the insulating sleeve 25 from the side direction of the bottom plate 24 and clamped at one end of the circular step; the cable is inserted into the cable sheath 27 and the insulating sleeve 25 in sequence from one side of the lining plate 20 and clamped at the other end of the circular step, after the cable 20 and the metal socket 26 are installed, the metal socket 26 in the insulating sleeve 25 is welded with a metal wire in the cable, and the other end of the cable is connected with an electric element.

As shown in fig. 7, the insulation distance between the two metal sockets of the insulation base plate 6 is: 2.5+2.5+6.5 ═ 11.5mm, install the insulating cover additional after, prolong the face creepage distance and be: 5+2.5+23+6.5+23+2.5+5 is 67.5mm, increases insulating cover height, can increase the creepage distance between the conductor by a wide margin, improves withstand voltage level.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A novel multi-path high-voltage switch device is characterized by comprising an insulating bottom plate (6) arranged at the bottom and an insulating rotary table (5) rotatably inserted above the insulating bottom plate (6), wherein an upright post (4) is fixed at the edge of the insulating bottom plate (6); the novel multifunctional clothes rack also comprises a nut (3), a baffle (2) and a handle (1);

through nut (3) fixed stop (2) of fastening at stand (4) top, insulating carousel (5) are whole to be located between baffle (2) and insulating bottom plate (6), set up pivot on insulating carousel (5) and upwards pass baffle (2) to fasten with handle (1) through the screw.

2. A novel multi-circuit high-voltage switch device according to claim 1, characterized in that: the insulation turntable (5) comprises a turntable (16) and a cover plate (7), the cover plate (7) and the turntable (16) are circular and have the same size, and the cover plate (7) is fixed on the upper portion of the turntable (16) through screws.

3. A novel multi-circuit high-voltage switch device according to claim 2, characterized in that: a circular groove is formed in the center of the upper part of the rotary disc (16), and the small fixed disc (10) is placed in the groove; the rotating shaft (9) penetrates through the cover plate (7), the small fixed disk (10) and the insulating rotary disk (5) at the same time, the small fixed disk (10) and the rotating shaft (9) are fixed through one radial screw, and the small fixed disk (10) and the rotary disk (16) are fixed through four axial screws, so that the cover plate (7), the small fixed disk (10) and the insulating rotary disk (5) are fixed; after the insulating rotary disc (5) is inserted above the insulating bottom plate (6), the rotating shaft (9) is correspondingly inserted into the shaft sleeve (23).

4. A novel multi-way high voltage switch device according to claim 3, characterized in that: eight groups of cylindrical grooves are formed in the vertical direction of the turntable (16), and each group of cylindrical grooves comprises two cylindrical grooves corresponding to the upper and lower positions; two of the cylindrical grooves are in a group and are communicated with each other by the grooves with the same depth to form a plurality of strip-shaped grooves, and the metal plug (15) is fixed through the strip-shaped grooves.

5. A novel multi-circuit high-voltage switch device according to claim 4, characterized in that: the insulating bottom plate (6) comprises an upper bottom plate (24) and a lower lining plate (20); the base plate (24) and the lining plate (20) are both rectangular and have the same size, and the lining plate (20) is fixed at the lower part of the base plate (24) through four fastening screws (21) at two sides; the upper surface of the bottom plate (24) is also provided with two positioning columns (22) for limiting, wherein one positioning column is positioned on one side of the bottom plate (24), and the other positioning column is positioned on the other side of the bottom plate (24).

6. A novel multi-circuit high-voltage switch device according to claim 5, characterized in that: insulating bottom plate (6) still include insulating cover (25), bottom plate (24) and welt (20) are passed respectively at insulating cover (25) both ends to clamp fixedly by bottom plate (24) and welt (20), seted up corresponding annular groove on the contact surface of bottom plate (24) and welt (20), realize insulating cover (25) and fix between bottom plate (24) and welt (20) through the annular boss on insulating cover (25) and the cooperation of bottom plate (24) annular groove, cable sheathing (27) are installed in the outside of insulating cover (25).

7. A novel multi-circuit high-voltage switch device according to claim 6, characterized in that: a circular step is arranged in the inner cavity of the insulating sleeve (25), and the metal socket (26) is laterally inserted into the insulating sleeve (25) from the bottom plate (24) and clamped at one end of the circular step; the cable is inserted into the cable sheath (27) and the insulating sleeve (25) in sequence from one side of the lining plate (20) and clamped at the other end of the circular step, after the cable and the metal socket (26) are installed, the metal socket (26) in the insulating sleeve (25) is welded with a metal wire in the cable, and the other end of the cable is connected with an electric element.

8. A novel multi-circuit high-voltage switch device according to any one of claims 1 to 7, characterized in that: the upper surface of the insulating bottom plate (6) is a rectangular surface, and the upright posts (4) are fixed at four corners of the rectangular surface.

9. A novel multi-circuit high-voltage switch device according to claim 4, characterized in that: the metal plug (15) comprises a pin and a connecting piece for connecting the pin.

10. A novel multi-circuit high-voltage switch device according to claim 7, characterized in that: the metal socket (26) is a socket of a hyperboloid wire spring jack.