WO2017133457A1

WO2017133457A1 - Wiring-improved structure for rotary double-breakpoint switch contact system

Info

Publication number: WO2017133457A1
Application number: PCT/CN2017/071545
Authority: WO
Inventors: 唐瑞
Original assignee: 上海良信电器股份有限公司
Priority date: 2016-02-05
Filing date: 2017-01-18
Publication date: 2017-08-10
Also published as: EP3413329A1; JP2019505085A; CN107045959A; EP3413329A4; KR20180108701A; KR102053070B1

Abstract

A wiring-improved structure of a rotary double-breakpoint switch contact system, comprising a movable contact (1), a static contact (2) and a short circuit bar (3), wherein the movable contact (1) can be electrically connected to the static contact (2) during a rotation process, characterized in that: the static contact (2) is connected to the short circuit bar (3) by means of a wiring screw (4), and the wiring screw (4) can realize wire entering along a circumferential direction. In the present invention, by improving a wiring method, the wiring direction of a rotary double-breakpoint isolation switch contact system can be changed flexibly, thereby satisfying the requirements of field installation of the isolation switch.

Description

Rotary double breakpoint switch contact system wiring improved structure

Technical field

The invention belongs to the technical field of isolating switches, and in particular relates to a wiring improved structure of a rotary double-breakpoint switch contact system.

Background technique

The isolating switch is the most used one in the high-voltage switchgear. The main feature of the isolating switch is that it has no arc-extinguishing capability, and can only divide and close the circuit without load current. The isolating switch is used for voltages at various stages. It is used to change the circuit connection or to isolate the line or equipment from the power supply. It has no current-breaking capability and can only be disconnected before operation by other equipment. Generally, there is an interlock device that prevents the switch from being erroneously operated with a load, and sometimes a pin is required to prevent the switch from being opened under the action of a large fault magnetic force. In the circuit system, when the line fails or needs to be repaired, the circuit breaker trips. At this time, the isolating switch acts to cut off the small current or provide an obvious port to ensure the safety of the staff during maintenance or overhaul. Under normal circumstances, the isolating switch has two forms, open type and gas-insulated metal-enclosed type, the open type isolating switch is directly exposed to the air, and the obvious break can be seen when opening, but it is bulky and cumbersome. The gas-insulated metal-enclosed isolating switch has small volume and high reliability, and has been widely used. The gas-insulated metal-enclosed isolating switch includes three isolation switches and one phase, and each of the isolation switches includes a cylinder, and each cylinder The moving mechanism, the static contact and the driving mechanism for driving the moving contact are provided in the middle, and most of the driving mechanism is electrically driven. However, due to the sealing property of the gas insulated metal-enclosed isolating switch, the operator cannot directly observe and obviously feel Whether it is in a disconnected state.

At present, there is a common rotary double-breakpoint isolating switch on the market. The wiring of the contact system can only be taken in one direction, which reduces the applicable range of the rotary double-breakpoint isolating switch. When it is necessary to change the installation position of the isolating switch in some special occasions, the wiring direction cannot be adjusted, and the isolation switch cannot be applied.

Summary of the invention

The object of the present invention is to provide a rotary double-breakpoint switch contact system wiring improvement structure for the single technical defect of the existing rotary double-breakpoint isolation switch wiring direction, and to make the rotary double breakpoint by improving the wiring mode. The wiring direction of the isolating switch contact system can be flexibly changed to meet the needs of on-site installation of the isolating switch.

Technical solutions

In order to achieve the above technical object, the rotary double breakpoint switch contact system wiring improved structure designed by the present invention comprises a movable contact, a static contact and a shorting row, and the movable contact can be in contact with the static touch during the rotation The head is electrically connected, characterized in that the stationary contact is connected to the shorting row by a terminal screw, so that the terminal screw can be routed in the circumferential direction.

Further, the mounting axis direction of the terminal screw is perpendicular to the central axis of the moving contact.

Further, the shorting row is

a shape, the two ends of which are respectively provided with a terminal screw mounting through hole, and the terminal end of the static contact is locked by the terminal screw, and the head end of the static contact protrudes into the slot of the movable contact The movable contact can be in electrical contact with the head end of the stationary contact during rotation.

Further, the tail end of the static contact is provided with a threaded hole, and the head end and the tail end of the static contact are connected by a connecting portion.

Further, the head end and the tail end of the stationary contact are planar structures perpendicular to each other.

Further, the moving contact can be in contact with the head end of the static contact to realize double break point during the rotating process.

Further, the movable contact is mounted on the coupling.

Further, the movable contact, the stationary contact and the shorting row are mounted on the base.

Further, the bottom surface of the wiring port to which the terminal screw is connected to the static contact is inclined downward, so that the connection angle of the connection line between the terminal screw and the static contact is increased.

Beneficial effect

The invention provides a wiring double-breakpoint switch contact system wiring improvement structure, by improving the wiring manner, that is, the static contact is connected to the short-circuit row through a terminal screw, so that the terminal screw It can enter the line in the circumferential direction, so that the wiring direction of the rotary double-breakpoint isolating switch contact system can be flexibly changed, which satisfies the need of on-site installation of the isolating switch.

DRAWINGS

1 is a schematic structural view of an embodiment of the present invention.

Figure 2 is an exploded perspective view of an embodiment of the present invention.

3 is a schematic view showing the installation structure of the shorting row in the embodiment of the present invention.

Figure 4 is a schematic view showing the structure of the shorting row in the embodiment of the present invention.

Figure 5 is a schematic view showing the structure of a movable contact in the embodiment of the present invention.

Figure 6 is a schematic view showing the structure of a static contact in the embodiment of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Example

As shown in FIGS. 1 and 2, the present invention provides a rotary double breakpoint switch contact system wiring improved structure, which comprises a movable contact 1, a fixed contact 2 and a shorted row 3, which can be rotated during the moving contact 1 The electrical connection is made with the static contact 2, characterized in that the static contact 2 is connected to the shorting row 3 through the terminal screw 4, and the wiring The screw 4 can be routed in the circumferential direction. In the present embodiment, the line is horizontally drawn from the outside (right side).

Referring again to Figure 1, the mounting axis direction of the terminal screw 4 is perpendicular to the central axis of the movable contact 1. The movable contact 1, the stationary contact 2, and the shorting row 3 are mounted on the base 6.

As shown in Figures 3 and 4, the shorting row 3 is

The shape has a flat structure at both ends, and is parallel to each other, and is connected by a rod or a plate structure at the middle, and each end is provided with a fixing screw mounting hole 301, one end of which passes through the end of the connecting screw 4 and the stationary contact 2 The ends 203 are locked together for external wiring (see also Figures 2 and 6), and the other end 305 extends into the connecting slot 8 of the base 6 and can be used in combination with another rotary double break switch as needed. Convenient to connect (electrical connection). The head end 202 of the static contact 2 extends into the slot 101 of the movable contact 1, and the plane of the slot 101 is perpendicular to the central axis of the movable contact 1, so that the contact end 102 can be connected with the static contact during the rotation of the movable contact 1. The head end 202 of 2 contacts to form an electrical connection. In the embodiment, the mounting hole 301 is a notch for convenient connection, and of course, a closed hole can also be adopted.

Referring again to FIG. 1, the bottom surface 91 of the terminal 9 to which the terminal screw 4 is connected to the fixed contact 2 is inclined downward (to the bottom surface of the base), so that the connection line between the terminal screw 4 and the fixed contact 2 can be inserted. Different angles of 0°-45° are realized, which increases the wiring angle and facilitates wiring. The high bottom surface of the existing switch is almost parallel to the surface of the base 6, and can only be wired in one direction.

As shown in FIG. 6, the trailing end of the stationary contact 2 is provided with a threaded hole 201, and the head end 202 and the trailing end 203 of the stationary contact 2 are connected together by a connecting portion 204. In the present embodiment, by the transition of the connecting portion 204, the planes of the planar head end 202 and the trailing end 203 of the fixed contact 2 are perpendicular to each other, so that the terminal screw 4 can be routed in the circumferential direction.

Referring again to FIG. 5, the movable contact 1 can contact the head end 202 of the two stationary contacts 2 during the rotation to achieve double break points (please explain the meaning of "double breakpoint", if it is a norm in the industry) , can be explained without explanation).

The movable contact 1 is mounted on the coupling 5.

The invention provides a rotary double-breakpoint switch contact system wiring improvement structure. By improving the wiring manner, the static contact 2 is connected with the short-circuiting row 3 through the terminal screw 4, so that the terminal screw 4 can enter the line in the circumferential direction. In this way, the wiring direction of the rotary double-breakpoint isolating switch contact system can be flexibly changed, thereby meeting the requirements of the various positions of the isolating switch of the present invention installed in the field.

The structures, the proportions, the sizes, and the like of the embodiments of the present invention are only used to cope with the contents disclosed in the specification for understanding and reading by those skilled in the art, and are not intended to limit the implementation of the present invention. Conditions, so it does not have technical significance, any structural modification, proportional relationship change or size adjustment, without affecting the effects and possible goals of the present invention, should still fall within the scope of the present invention. The technical content revealed can be covered. At the same time, the terms such as "upper", "lower", "left", "right", "intermediate", "clockwise", "counterclockwise", etc. quoted in this specification are also for convenience of description. Rather than limiting the scope of the invention, it is to be understood that the scope of the invention may be practiced.

Claims

Rotary double breakpoint switch contact system wiring improved structure, which comprises moving contact (1), static contact (2) and shorting row (3), movable contact (1) can be combined with static contact during rotation ( 2) An electrical connection is achieved, characterized in that the static contact (2) is connected to the shorting row (3) by a terminal screw (4), and the terminal screw (4) can be routed in the circumferential direction.
The rotary double-breakpoint switch contact system wiring improvement structure according to claim 1, characterized in that the mounting axis direction of the terminal screw (4) is perpendicular to the central axis of the movable contact (1).
The improved structure of the rotary double breakpoint switch contact system according to claim 1, wherein the shorting row (3) is
The shape is provided with a terminal screw mounting hole (301) at both ends thereof, and is locked with the tail end of the static contact (2) through the terminal screw (4), and the head end (202) of the static contact (2) is extended. In the slot (101) of the movable contact (1), the contact end (102) can be in electrical contact with the head end (202) of the fixed contact (2) during the rotation of the movable contact (1).
The improved structure of the rotary double-breakpoint switch contact system according to claim 1, wherein the rear end (203) of the static contact (2) is provided with a threaded hole (201), and the static contact (2) The head end (202) and the tail end (203) are connected together by a joint (204).
The rotary double breakpoint switch contact system wiring improvement structure according to claim 1, wherein the head end (202) and the tail end (203) of the static contact (2) are mutually perpendicular planes. Structure.
The improved structure of the rotary double-breakpoint switch contact system according to claim 1, wherein the movable contact (1) is rotatable with the head ends of the two stationary contacts (2) (202) Contact achieves double breakpoints.
A rotary double breakpoint switch contact system wiring improvement structure according to claim 1, characterized in that It is that the movable contact (1) is mounted on the coupling (5).
A rotary double breakpoint switch contact system wiring improvement structure according to claim 1, wherein said movable contact (1), static contact (2) and shorting row (3) are mounted on the base ( 6) Upper.
The improved structure of the rotary double-breakpoint switch contact system according to claim 1, characterized in that: the bottom surface (91) of the wiring port (9) to which the terminal screw (4) and the static contact (2) are connected Tilting downward, thus increasing the angle of connection of the connecting wire inserted between the terminal screw (4) and the stationary contact (2).