RU163955U1 - 2 DIRECTION SWITCH-DISCONNECTOR - Google Patents

Abstract

The utility model relates to electrical engineering, in particular, to low-voltage switch-disconnectors designed for switching electric circuits without current, or in rare cases for switching under load not exceeding the nominal value.

The problem, which the utility model is aimed at, is to create a design that provides switching of low-voltage electric power circuits in two directions.

The technical result is to increase the manufacturability of the production and operation of the device, increasing the working life due to the unification of the used parts, ensuring stable contact pressing, the use of arcing chambers.

The technical problem is achieved due to the fact that in the two-way switch-disconnector containing the housing, formed by closed sections and mounting plates, tightened by studs with nuts, arcing chambers, a control shaft passing through all sections of the housing with a removable handle associated with it, movable contacts in in the form of a block of two parallel plates with a gap between them, assembled as a unit with the help of axes, springs and fastener plates and fixed contacts installed in sections of the housing, in each section the housing and the holes are made with the possibility of placing studs in them, the control shaft is made with through holes with the possibility of placing movable contacts in them, the removable handle is equipped with a handle displacement unit and a set of fasteners and is configured to be attached to the wall of the control cabinet and connected to the control shaft with both sides and its subsequent rotation, with each fixed contact of the common line is made star-shaped from a conductive electrical material and fixed to pus through the fixation points with the possibility of alternately closing the fixed contact of the common line by moving the contact with the fixed contact of one direction and the other direction, and sharpening is made on the end surface of the fixed contact to facilitate its entry into the movable contact, each contact having an output bus with holes for fastening the cables of the electric circuit by means of a detachable connection, and each output bus is outside the housing for connecting the cables of the electric lines feeding and loads, while each movable contact is made with the possibility of centering in the housing section made in the walls of the central hole of the section for the control shaft by the grooves and the end parts of the fastener plates located in them, and each arcing chamber is fixed in the switch-disconnector housing using spring latches and is made in the form of two sets of deion plates placed on opposite sides of the body of the arcing chamber, moreover, in the end section of the body there is a sub a rugged lock of the position of the control shaft, and the mounting plate is equipped with an earthing bolt to connect the switch-disconnector to the protective ground loop and protect operating personnel.

Description

The utility model relates to electrical engineering, in particular, to low-voltage switch-disconnectors designed for switching electric circuits without current, or in rare cases for switching under load not exceeding the nominal value.

Known switch-disconnector (RF patent for utility model No. 52519), containing a multi-section insulating casing, mounting panels strapped to the indicated sections of the insulating casing by means of studs, as well as fixed contacts installed in the multi-section insulating casing, interrupter chambers and a locking mechanism, as well as a control a shaft connected to a handle made of captive and passing through sections of an insulating body made of premix, while into the through holes of the specified control conductive shaft movable contacts mounted units, each of which is made of two parallel contacts, spring-loaded leaf springs and assembled into a block by means of the locking plate, bounding the flat tie-plates and fasteners.

The switch-disconnector, selected as a prototype, is intended for switching one power line, does not allow switching one line in 2 directions.

The proposed utility model is intended for switching one power supply line alternately in 2 directions, or, if necessary, connecting the load line to any of 2 independent power supply lines.

The problem, which the utility model is aimed at, is to create a design that provides switching of low-voltage electric power circuits in two directions.

The technical result is to increase the manufacturability of the production and operation of the device, increasing the working life due to the unification of the used parts, ensuring stable contact pressing, the use of arcing chambers.

The technical problem is achieved due to the fact that in the two-way switch-disconnector containing the housing, formed by closed sections and mounting plates, tightened by studs with nuts, arcing chambers, a control shaft passing through all sections of the housing with a removable handle associated with it, movable contacts in in the form of a block of two parallel plates with a gap between them, assembled as a unit with the help of axes, springs and fastener plates and fixed contacts installed in sections of the housing, in each section the housing and the holes are made with the possibility of placing studs in them, the control shaft is made with through holes with the possibility of placing movable contacts in them, the removable handle is equipped with a handle displacement unit and a set of fasteners and is configured to be attached to the wall of the control cabinet and connected to the control shaft with both sides and its subsequent rotation, with each fixed contact of the common line is made star-shaped from a conductive electrical material and fixed to pus through the fixation points with the possibility of alternately closing the fixed contact of the common line by moving the contact with the fixed contact of one direction and the other direction, and sharpening is made on the end surface of the fixed contact to facilitate its entry into the movable contact, each contact having an output bus with holes for fastening the cables of the electric circuit by means of a detachable connection, and each output bus is outside the housing for connecting the cables of the electric lines feeding and loads, while each movable contact is made with the possibility of centering in the housing section made in the walls of the central hole of the section for the control shaft by the grooves and the end parts of the fastener plates located in them, and each arcing chamber is fixed in the switch-disconnector housing using spring latches and is made in the form of two sets of deion plates placed on opposite sides of the body of the arcing chamber, moreover, in the end section of the body there is a sub a rugged lock of the position of the control shaft, and the mounting plate is equipped with an earthing bolt to connect the switch-disconnector to the protective ground loop and protect operating personnel.

The utility model is illustrated by the following figures:

FIG. 1 - Switch, rear view.

FIG. 2 - Switch, front view.

FIG. 3 - Switch, top view (without handle).

FIG. 4 - Switch, bottom view (without handle).

FIG. 5 - Section of the housing with fixed contacts.

FIG. 6 - Switch assembly with interrupter chambers.

FIG. 7 - Fixed contact of the 1st or 2nd directions.

FIG. 8 - Fixed contact common line.

FIG. 9 - Arcing chamber.

FIG. 10 - Movable contact assembly.

FIG. 11 - Section of the housing with a latch.

Where:

1. Fixed contacts of the 1st direction with output buses.

2. Fixed contacts of the 2nd direction with output buses.

3. Mounting plates.

4. The handle.

5. Tightening studs with nuts.

6. Ground bolt.

7. Fixed contacts of the common line with output buses.

8. Section sections.

9. Mobile contacts.

10. The control shaft.

11. The central hole of the section for the control shaft.

12. Holes for tightening studs.

13. Arcing chambers.

14. The handle shift unit.

15. A set of fasteners for the handle.

16. The hole for attaching the cable (bus).

17. Places of contact fixation in the housing.

18. Sharpening on the end surface of the fixed contact.

19. Grooves in the walls of the central hole.

20. Spring latches of the arcing chamber.

21. Parallel plates of movable contact.

22. The axis of the movable contact unit.

23. The springs of the movable contact unit.

24. Fastener plates of the movable contact block.

25. The end parts of the plate fasteners.

26. Spring-loaded latch.

27. Deionic plates of the arcing chamber.

The two-way switch-disconnector consists of a housing formed by enclosed sections of the housing 8 and mounting plates 3 tightened by studs 5 with nuts, a control shaft 10, a removable handle 4 associated therewith, movable contacts 9, fixed contacts 1, 2, 7, interrupter cameras 13.

In each of the enclosed chambers, fixed contacts 1, 2, and 7 are located, the output busbars of which are brought out of the housing to connect the cables of the power supply and load lines.

The control shaft 10 passes through all sections 8 of the housing, in the rectangular holes of the shaft (not shown in Fig.) Movable contacts 9 are placed.

The studs 5 pass through all sections 8 of the body through the holes 12 made in them.

The removable handle 4 is attached to the wall of the control cabinet (not shown in Fig.) Using a set of fasteners 15 and is configured to connect to the control shaft 10 on both sides and its subsequent rotation.

The removable handle 4 is provided with a handle biasing unit 14 for ease of installation and operation.

Each fixed contact 1, 2, 7 (Fig. 7) is made of a conductive electrical material and is fixed in the housing by means of fixation points 17.

To facilitate the entry of the stationary contact into the movable on the end surface of the stationary contact, grinding 18 is made.

The output busbars of contacts 1, 2, 7 are made with holes 16 for fastening the cables of the electric circuit through a detachable connection.

Each fixed contact 7 (Fig. 8) has a star-shaped shape and is designed to alternately close with a movable contact 9 a fixed contact of the common line 7 or with a fixed contact in one direction, for example, 1, or another, for example, 2.

Closing / opening occurs as a result of rotation of the control shaft 10, mechanically associated with the handle 4.

The arrangement of the fixed contacts 1, 2, and 7 in the housing section is shown in FIG. 5.

Each movable contact 9 of the switch-disconnector is made in the form of a block of two parallel plates 21 with a gap between them, assembled together with the help of axes 22, springs 23 and fastener plates 24 and is located in a rectangular through hole (not shown in Fig.) control shaft 10.

Each movable contact 9 is centered in the adjacent sections of the housing 8 pulled together by the pins 8 and made in the walls of the central opening of the section 11 by grooves 19 and the end parts 25 of the fastener plates 24 located in these grooves.

The switch-disconnector is configured to switch electrical circuits with a current load not exceeding the nominal.

To extinguish the arc that occurs when a circuit is broken under load, it is equipped with arcing chambers 13, each of which is two sets of deion plates 27 located on opposite sides of the common body of the arcing chamber. Arc chambers are fixed in the housing of the switch-disconnector using spring latches 20.

In the end section of the housing 8 of the switch-disconnector, there is a spring-loaded clamp 26 of the position of the control shaft 10, designed to clearly fix the control shaft 10 in one of 3 working positions: 1) all lines are disconnected (position "0"), 2) the common and the first line, 3) the common and the second line are connected.

To protect operational personnel from electric shock, one of the mounting plates 3 is equipped with a grounding bolt 6, which serves to connect the switch-disconnector to the protective ground loop.

The device operates as follows: when the handle 4 is in the “0” position, the movable contact is not bent with any fixed contact, all lines are open.

When the handle 4 is turned all the way, for example, upwards, a common line is switched with, for example, the first line. Commutation of another, for example, the second line with a common line is possible only after the handle passes through the "0" position, which makes it impossible to commute all three lines simultaneously.

Thus, the task of creating a design that provides switching low-voltage electric power circuits in two directions with increasing manufacturability of the production and operation of the device is solved.

Claims (1)

Two-way switch-disconnector, comprising a housing formed by closed sections and mounting plates tightened by studs with nuts, arc chambers, a control shaft passing through all sections of the housing with a removable handle associated with it, movable contacts in the form of a block of two parallel plates with a gap between them, assembled together with the help of axles, springs and fastener plates, and fixed contacts installed in sections of the housing, characterized in that holes are made in each housing section the possibility of placing studs in them, the control shaft is made with through holes with the possibility of placing movable contacts in them, the removable handle is equipped with a handle displacement unit and a set of fasteners and is configured to be attached to the wall of the control cabinet and connected to the control shaft from both sides and its subsequent rotation, while each fixed contact of the common line is made star-shaped from a conductive electrical material and is fixed in the housing by means of fixation points the ability to alternately close the fixed contact of the common line by means of the movable contact with the fixed contact of one direction and the other direction, and sharpening is made on the end surface of the fixed contact to facilitate its entry into the movable contact, and each contact is equipped with an output bus with holes for attaching electrical circuit cables by detachable connection, and each output bus is outside the housing for connecting the cables of power lines and load, while Each movable contact is made with the possibility of centering in the housing section made in the walls of the central bore of the section for the control shaft by grooves and the end parts of the fastener plates located in them, and each arcing chamber is fixed in the switch-disconnector housing using spring latches and is made in the form of two placed on opposite sides of the body of the arcing chamber of the sets of deion plates, and in the end section of the body is a spring-loaded position lock the control shaft, and the mounting plate is equipped with a grounding bolt to connect the switch-disconnector to the protective grounding loop and protect operating personnel.

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