CN205069492U - Outdoor permanent magnetism vacuum circuit breaker - Google Patents

Abstract

The utility model discloses an outdoor permanent magnet vacuum circuit breaker, which comprises a pole column of a vacuum interrupter and a box. The pole column of the vacuum interrupter is fixedly connected outside the box; one side of the box is provided with a permanent The magnetic mechanism and the other side are provided with a manual closing mechanism, and a drive rod is erected between the permanent magnet mechanism and the manual closing mechanism; the iron core of the permanent magnet mechanism is provided with a driving arm, and the driving arm and the driving The rods are connected; the end of the driving rod close to the permanent magnet mechanism is connected with the opening spring; the manual closing mechanism is provided with an output crank arm and an opening semi-shaft connecting plate, and the output crank arm is connected with the drive rod. and respectively fixed between the two side plates of the manual closing mechanism; the opening semi-shaft connecting plate is connected with an energy storage bushing, and the energy storage bushing is connected with a manual closing handle. The utility model has a simple and reliable structure, can be manually closed at a high speed, and has positive significance for the development, application and popularization of outdoor high-voltage AC permanent magnet vacuum circuit breakers.

Description

An outdoor permanent magnet vacuum circuit breaker

technical field

The utility model relates to the technical field of high-voltage switchgear, in particular to an outdoor permanent magnet vacuum circuit breaker.

Background technique

In recent years, outdoor high-voltage AC permanent magnet vacuum circuit breakers have been widely used in my country's distribution network, mainly due to the fact that the permanent magnet operating mechanism has fewer mechanical parts, simple structure, high reliability, long life, and better realization. Precise control and other advantages. However, for products equipped with permanent magnet operating mechanism, the opening and closing operation must have the support of power supply and controller to drive the permanent magnet mechanism to realize the opening and closing operation. Once the line is powered off, overhauled or a fault occurs in the control box In this case, there is no way to realize the electric opening and closing of the switch, resulting in the failure of the power line to operate normally, causing heavy losses to the power system and users. Therefore, it is of great significance to design a permanent magnet vacuum circuit breaker with both manual speed and electric closing and opening functions.

Although the existing permanent magnet mechanism can basically realize the manual opening with speed, it is difficult to achieve manual closing with speed because the manual closing has to overcome the reaction force of the contact spring and the opening spring.

Therefore, how to solve the above problems has become the key to the development and application of outdoor high-voltage AC permanent magnet vacuum circuit breakers, and has urgent practical needs.

Contents of the invention

In view of the deficiencies in the prior art, the purpose of the utility model is to provide an outdoor permanent magnet vacuum circuit breaker, which has a simple and reliable structure and can be manually closed at a high speed.

In order to achieve the above purpose, the technical solution adopted by the utility model is as follows: an outdoor permanent magnet vacuum circuit breaker, including a pole of a vacuum interrupter and a box, and the pole of the vacuum interrupter is fixedly connected to the outside of the box ; One side of the box is provided with a permanent magnet mechanism, the other side is provided with a manual closing mechanism, and a drive rod is erected between the permanent magnet mechanism and the manual closing mechanism; the iron core of the permanent magnet mechanism is set There is a driving crank arm, and the driving crank arm is connected with the driving rod; the iron core end of the permanent magnet mechanism away from the driving crank arm is provided with a manual opening shaft, and the manual opening shaft is connected with a manual opening handle; the driving One end of the rod close to the permanent magnet mechanism is connected with an opening spring, and the end of the opening spring far away from the permanent magnet mechanism is connected to the box; The output crank arm is connected with the driving rod, and is respectively fixed between the two side plates of the manual closing mechanism; the opening semi-shaft connecting plate is connected with an energy storage bushing, and the energy storage bushing is connected with a manual Closing handle.

As a preferred solution, a long waist-shaped hole is provided at the connection between the drive rod and the output crank arm, and the output crank arm is connected to the long waist-shaped hole through a pin.

As a preferred solution, an adjusting bushing is also arranged between the pin of the output crank arm and the oblong hole.

As a preferred solution, the driving rod is also provided with a driving rod pressing plate and an auxiliary switch, and the driving rod pressing plate opens the hand closing mechanism to keep the ratchet when the switch is closed; the auxiliary switch is connected with the driving rod through a pin, and Installed on the box.

As a preferred solution, the opening spring is connected to the driving rod through an opening spring hanger pin.

As a preferred solution, there are two opening springs, which are respectively arranged on both sides of the driving rod.

As a preferred solution, the connecting plate of the opening half shaft is connected to the energy storage bushing through a steel wire.

Compared with the prior art, the utility model has the beneficial effects:

1. The permanent magnet vacuum circuit breaker with manual quick closing function of the utility model has a simple structure of the manual closing mechanism and high closing reliability;

2. The manual closing mechanism of the utility model and the permanent magnet mechanism move relatively independently, and the manual closing mechanism maintains the original state when the permanent magnet mechanism closes and opens;

3. The manual closing mechanism of the utility model enables the high-voltage switchgear to realize closing with speed through the release of energy stored in the energy storage spring, thereby completing the closing action when the high-voltage switchgear is powered off;

4. The closing stroke and characteristics of the manual closing mechanism of the utility model and the permanent magnet mechanism are well matched.

Description of drawings

Fig. 1 is the front view of the utility model;

Fig. 2 is a sectional view of the utility model;

Fig. 3 is the bottom view of the utility model;

Fig. 4 is a schematic diagram of the connection of the manual closing mechanism, the permanent magnet mechanism and the driving rod in the utility model.

detailed description

Below in conjunction with specific embodiment the utility model is further described. The following examples are only used to illustrate the technical solution of the utility model more clearly, but not to limit the protection scope of the utility model.

Example:

As shown in Figure 1, Figure 2, Figure 3, and Figure 4, an outdoor permanent magnet vacuum circuit breaker includes a pole 1 of a vacuum interrupter and a box body 2, and the pole 1 of the vacuum interrupter is fixedly connected to the box Outside the body 2; one side of the box body 2 is provided with a permanent magnet mechanism 13, the other side is provided with a manual closing mechanism 3, and a drive rod 8 is erected between the permanent magnet mechanism 13 and the manual closing mechanism 3; The iron core of the permanent magnet mechanism 13 is provided with a driving arm 12, and the driving arm 12 is connected with the driving rod 8 through a pin 7; Brake shaft 14, the manual trip shaft 14 is connected with a manual trip handle 19 to realize the manual trip of the circuit breaker; the end of the drive rod 8 close to the permanent magnet mechanism 13 is connected with a trip spring 20, and the trip spring 20, one end away from the permanent magnet mechanism 13 is connected to the box body 2 through a pin; the opening spring 20 is connected to the driving rod 8 through the opening spring hanging pin 21; there are two opening springs 20, which are respectively arranged on Both sides of the driving rod 8; the manual closing mechanism 3 is provided with an output crank arm 16 and a half-shaft connecting plate 4, the output crank arm 16 is connected with the driving rod 8 and fixed on the manual closing Between the two side plates 23 of the mechanism 3; the connection between the drive rod 8 and the output crank arm 16 is provided with a long waist-shaped hole 22, and the output crank arm 16 is connected to the long waist-shaped hole 22 through a pin 7; An adjustment bushing 6 is also arranged between the pin 7 of the output crank arm 16 and the oblong hole 22; the opening semi-shaft connecting plate 4 is connected with an energy storage bushing 17 through a steel wire 5, and the energy storage bushing 17 A manual closing handle 18 is connected; the driving rod 8 is also provided with a driving rod pressing plate 10 and an auxiliary switch 11, and the driving rod pressing plate 10 opens the hand closing mechanism to hold the ratchet 9 when closing; the auxiliary switch 11 passes The pin is connected with the driving rod 8 and installed on the box body 2, wherein the auxiliary switch 11 provides a signal of closing and opening position for the closing and opening of the switch.

During specific implementation, when the permanent magnet vacuum circuit breaker is electrically closed, the iron core of the permanent magnet mechanism 13 moves to the right, driving the driving arm 12 to rotate clockwise, and the driving arm 12 drives the driving rod 8 to shift to the left, thereby making the circuit breaker The circuit breaker closes and stretches the opening spring 20. After the circuit breaker is closed, it is maintained by the permanent magnet of the permanent magnet mechanism 13; and the force of the overtravel spring of the circuit breaker for opening; when the permanent magnet vacuum circuit breaker is manually closed, the manual closing handle 18 is first pulled clockwise, and the manual closing handle 18 drives the energy storage sleeve 17 to rotate clockwise to make The steel wire 5 is not stressed, and the opening half-shaft connecting plate 4 loses the stretching force of the steel wire 5, and is naturally reset by the force of the opening half-shaft torsion spring of the opening half-shaft connecting plate 4, and the manual closing handle is pulled After 18 is in place, release it and reset it naturally. When the manual closing handle 18 is reset, it drives the energy storage sleeve 17 to rotate counterclockwise to stretch the steel wire 5, and pulls the opening half shaft connecting plate 4 to rotate counterclockwise to make the manual closing mechanism 3 open. Open the semi-shaft of the gate, repeat the above operations to make the manual closing mechanism 3 stretch the energy storage spring 15, when the energy storage spring 15 is over-charged, use the inertial energy to release, drive the output crank arm 16 to rotate, and cause the drive rod to rotate in 8 directions. The left displacement drives the permanent magnet vacuum circuit breaker to close successfully, and then the manual closing handle 18 is reset to pull the opening semi-axis connecting plate 4 to rotate through the steel wire 5. At this time, the opening semi-axis of the manual closing mechanism 3 is opened, and the permanent magnet The holding force of the mechanism 13 keeps the circuit breaker in the closed state; after the circuit breaker is closed, the drive lever pressure plate 10 presses down the hand closing mechanism 3 of the manual closing mechanism to keep the pawl 9 open, and the circuit breaker cannot be operated again. Manual closing operation; when the circuit breaker is manually opened, first pull the manual opening handle 19 counterclockwise to drive the manual opening shaft 14 to rotate, and the iron core of the eccentric wheel top permanent magnet mechanism 13 on the manual opening shaft 14, Under the active force of the gate spring 20 and the manual opening shaft 14, the holding force of the permanent magnet mechanism 13 is overcome to open the permanent magnet vacuum circuit breaker.

The above is only the preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and deformations can also be made. And deformation should also be regarded as the protection scope of the present utility model.

Claims (7)

1. An outdoor permanent magnet vacuum circuit breaker, characterized in that: it includes a pole of a vacuum interrupter and a cabinet, and the pole of the vacuum interrupter is fixedly connected outside the cabinet; one side of the cabinet is provided with The permanent magnet mechanism and the other side are provided with a manual closing mechanism, and a drive rod is erected between the permanent magnet mechanism and the manual closing mechanism; the iron core of the permanent magnet mechanism is provided with a driving crank arm, and the driving crank arm and The driving rods are connected; the iron core end of the permanent magnet mechanism away from the driving crank arm is provided with a manual opening shaft, and the manual opening shaft is connected with a manual opening handle; the end of the driving rod close to the permanent magnet mechanism is connected with a branch A brake spring, and the end of the opening spring away from the permanent magnet mechanism is connected to the box; the manual closing mechanism is provided with an output toggle arm and a half-shaft connecting plate for opening, and the output toggle arm is connected to the drive rod. and respectively fixed between the two side plates of the manual closing mechanism; the opening semi-shaft connecting plate is connected with an energy storage bushing, and the energy storage bushing is connected with a manual closing handle. 2. An outdoor permanent magnet vacuum circuit breaker according to claim 1, characterized in that: the connection between the drive rod and the output crank arm is provided with a long waist-shaped hole, and the output crank arm and the long waist-shaped hole pass through pins are connected. 3. An outdoor permanent magnet vacuum circuit breaker according to claim 2, characterized in that: an adjustment bushing is provided between the pin of the output crank arm and the oblong hole. 4. An outdoor permanent magnet vacuum circuit breaker according to claim 1, characterized in that: the driving rod is also provided with a driving rod pressing plate and an auxiliary switch, and the driving rod pressing plate is opened by the hand closing mechanism when closing ratchet; the auxiliary switch is connected with the drive rod through a pin and installed on the box body. 5. An outdoor permanent magnet vacuum circuit breaker according to claim 1, characterized in that: the opening spring is connected to the driving rod through the opening spring pin. 6. An outdoor permanent magnet vacuum circuit breaker according to claim 4, characterized in that there are two opening springs, which are respectively arranged on both sides of the driving rod. 7. An outdoor permanent magnet vacuum circuit breaker according to claim 1, characterized in that: the opening half shaft connecting plate is connected to the energy storage bushing through a steel wire.