CN201877307U

CN201877307U - Mechanism for automatically switching operating and test positions of circuit breaker

Info

Publication number: CN201877307U
Application number: CN2010205513311U
Authority: CN
Inventors: 李坤; 顾晓贺; 朱世杰; 赵长顺
Original assignee: Henan Senyuan Electric Co Ltd
Current assignee: Henan Senyuan Electric Co Ltd
Priority date: 2010-10-08
Filing date: 2010-10-08
Publication date: 2011-06-22
Anticipated expiration: 2020-10-08

Abstract

The utility model discloses a mechanism for automatically switching operating and test positions of a circuit breaker. A motor (5) is fixed on a chassis (3) of the circuit breaker; a transmission shaft (2) is fixed on the motor (5) and connected with a lead screw (4) of the circuit breaker through a meshing gear (1); a position transducer (6) and a controller (7) are also provided; a sampling point (8) of the position transducer (6) is fixed together with a movable part (11) of the circuit breaker and can move along with the movement of the circuit breaker; an operating position point (10), a test position point (9) and the sampling point (8) of the position transducer (6) are electrically connected with a contact point of the controller (7) respectively; the motor (5) is electrically connected with the contact point of the controller (7); and the controller (7) receives a position signal of the circuit breaker and controls both the operating information and operating direction of the motor (5). The control mechanism can remotely control the conversion of operating and test positions of the circuit breaker, can be safely and reliably operated by staff, and simultaneously has an error report function.

Description

A kind of circuit breaker work and test position tripper

Technical field

The utility model relates to a kind of circuit breaker controlling organization, particularly the controlling organization of circuit breaker work and test position conversion.

Background technology

At present, the circuit breaker of electrical power distribution system mesohigh power distribution equipment use is to adopt circuit breaker handle manually to shake to enter the service position or shake out test position substantially.This controlling organization has following defective: 1, can not carry out distant place control.In supermatic today, backstage, a distant place is relatively more flourishing, and certain trouble is caused to electricity consumer in test and service position conversion meeting automatically; 2, the indoor hot line job of high voltage power distribution has certain danger.

The utility model content

The purpose of this utility model is to provide a kind of circuit breaker work and test position tripper.

The technical solution of the utility model is, a kind of circuit breaker work and test position tripper is characterized in that, fix a motor on the car of circuit breaker chassis, fix a power transmission shaft on the motor, and power transmission shaft is connected with the circuit breaker leading screw by meshing gear; In addition position sensor and controller, the sampled point of position transducer and circuit breaker moveable part are fixed, can move and move with circuit breaker, service position point, test position point and the sampled point of position transducer are electrically connected with the contact of controller respectively, motor is electrically connected with the contact of controller, controller receives the position signalling of circuit breaker, and the trend of work and the operative orientation of control motor.

Motor rotates, dragging power transmission shaft rotates, power transmission shaft drives the circuit breaker leading screw by meshing gear and rotates, thereby make circuit breaker finish the operation that requires, whether motor rotates depends on whether controller provides voltage, and controller is according to the operational order in the external world, signal that the reference position transducer provides and circuit-breaker status signal, analyze the back decision whether voltage is provided, thereby finish the automatic control of circuit breaker position.When the motor main story, the motor power axle drags screw mandrel and turns clockwise, and circuit breaker turnover direction is to the service position direction by test position.When the motor counter-rotating, the motor power axle drags leading screw and is rotated counterclockwise, and circuit breaker turnover direction is to the test position direction by the service position.

Circuit breaker work that the utility model provides and test position tripper can be changed remote operation circuit breaker performance test position, and staff's handling safety, reliable has the function of reporting an error simultaneously.

Description of drawings

Fig. 1 is the schematic diagram of work of the utility model circuit breaker and test position tripper embodiment;

Fig. 2 is the basic configuration figure of position transducer embodiment illustrated in fig. 1;

Fig. 3 is the illustraton of model of position transducer embodiment illustrated in fig. 1;

Fig. 4 is the function declaration figure of controller embodiment illustrated in fig. 1;

Fig. 5 is the circuit diagram of controller embodiment illustrated in fig. 1.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Among the figure: 1, meshing gear 2, power transmission shaft 3, circuit breaker chassis car 4, circuit breaker leading screw 5, motor 6, position transducer 7, controller 8, sampled point 9, test position point 10, service position point 11, circuit breaker moveable part 12, resistance wire

As shown in drawings, work of the utility model circuit breaker and test position tripper are to fix a motor 5 on circuit breaker chassis car 3, fix a power transmission shaft 2 on the motor 5, and power transmission shaft 2 is connected with circuit breaker leading screw 4 by meshing gear 1; In addition position sensor 6 and controller 7, the sampled point 8 of position transducer 6 is fixing with circuit breaker moveable part 11, can move and move with circuit breaker, the service position point 10 of position transducer 6, test position point 9 and sampled point 8 are electrically connected with contact A7, A8, the A9 of controller 7 respectively, the positive and negative power supply input point of motor 5 is electrically connected with contact A3, the A4 of controller 7, controller 7 receives the position signalling of circuit breaker, and the trend of work and the operative orientation of control motor 5.

Fig. 3 is the illustraton of model of position transducer 6 embodiment illustrated in fig. 1.Between service position point 10 and test position point 9, add a voltage U ₀, between sampled point 8 and test position 9, a voltage U is arranged ', sampled value is got U '/U ₀Value, its scope is 0-1.In the permissible error scope, set certain fluctuation range with 0 with 1, so that the controller sampling.

As shown in Figure 4, the A1 of controller 7, A2 are the operating voltage input points; A3, A4 are the electric moter voltage output points, and this voltage output can just can be born, and represents forward and reverse respectively.A5, A6 are the voltage output points that reports an error; A7, A8, A9 are the sensor sample points, are respectively service position point, test position point and sampled point; A10 is a controller secure ground connection; A11, A12 are test position point sampling points, from normally closed some S8 of the test position of circuit breaker inside; A15, A16 are the service position sampled points, from the service position of the circuit breaker inside S9 of often making war; A13, A14 and A17, A18 are outside input contacts, and what take is passive make-and-break signal, and A13, A14 are logical to be that circuit breaker enters the test position order, not order of disconnected expression; A17, A18 are logical to be that circuit breaker enters the service position order, not order of disconnected expression.Controller 7 can receive the position signalling of circuit breaker, and can control machine operation and dynamically reach operative orientation.

In the circuit diagram of controller shown in Figure 5, A1, A2 connect power supply; A11, A12 meet the normally closed some S8 in circuit-breaker testing position; A15, A16 meet the circuit breaker service position S9 of often making war; A13, A14 meet SA1, and SA1 advances the test position order button for simulation, and A17, A18 meet SA2, and SA2 advances the test position order button for simulation, but can control also distant place control on the spot; A5, A6 connect the motor positive and negative terminal; A7, A8, A9 connect the service position point 10 of position transducer, test position point 8 and sampled point 9, and report an error output A3, A4 connect the outside equipment that reports an error.

The control mechanism of work of the utility model circuit breaker and test position tripper is as follows:

One, when circuit breaker during in test position.

Desire sends to instruct and makes circuit breaker enter the service position now, press the SA2 button, or make the SA2 closure by other modes, controller detects S9=0 and sensor voltage U ≠ 1, then controller output end is exported positive voltage, and the work of motor forward is after circuit breaker arrives the service position, controller detects S9=1 and U=1, and output stops.

Two, when circuit breaker during in the service position.

Desire to make circuit breaker to break away from the service position now, enter test position, controller is behind the signal of receiving the SA1 closure, and detect S8=0 and sensor voltage U ≠ 0, controller output end output negative voltage, the work of motor negative sense, circuit breaker arrives test position, controller detects S8=1 and U=0, and output stops.

Three, circuit breaker is when the inoperative test position.

Controller is after receiving the closed instruction of SA1 (SA2), and detected information is S8=0, S9=0,0＜U＜1, negative (just) voltage of controller output, machine operation is after work is finished, behind the signal that detects S8=1 and U=0 (S9=1 and U=1), voltage output stops, and motor quits work.

If four signal SA1, the SA2 that receive are closed simultaneously, controller does not send action command, continues to detect, up to eligible.

If five circuit breakers are entering or are withdrawing from the process, run into stopping of external force, can't finish predetermined operation, controller can send the voltage signal that reports an error.

This circuit breaker work and test position tripper can be changed remote operation circuit breaker performance test position, and staff's handling safety, reliable has the function of reporting an error simultaneously.

Claims

1. circuit breaker work and test position tripper, it is characterized in that: on circuit breaker chassis car (3), fix a motor (5), fix a power transmission shaft (2) on the motor (5), power transmission shaft (2) is connected with circuit breaker leading screw (4) by meshing gear (1); In addition position sensor (6) and controller (7), the sampled point (8) of position transducer (6) is fixing with circuit breaker moveable part (11), can move and move with circuit breaker, the service position point (10) of position transducer (6), test position point (9) and sampled point (8) are electrically connected with the contact of controller (7) respectively, motor (5) is electrically connected with the contact of controller (7), controller (8) receives the position signalling of circuit breaker, and the trend of work and the operative orientation of control motor (5).