Novel vacuum circuit breaker

Abstract

The utility model discloses a novel vacuum circuit breaker, belongs to the technical field of vacuum circuit breakers, and solves the problem that the vacuum three-phase recloser needs to be replaced due to the fact that the service life is gradually shortened due to high temperature or long-time use when the on-off operation of the conventional vacuum three-phase recloser is mostly performed by a permanent magnet mechanism. Comprising an upper shell and a lower shell which are detachably connected, a main transmission shaft with one end penetrating through the upper shell is rotatably connected in the upper shell, a driven transmission shaft with one end penetrating through the lower shell is rotatably connected in the lower shell, the main transmission shaft is in transmission connection with the driven transmission shaft, and a static contact is fixedly connected to the top surface of the upper shell. According to the utility model, the static contact is electrified to enable the electromagnet to adsorb the metal spring, pull the pull rod and the main deflection sleeve, and drive the transmission shaft and the wheel to rotate, thereby realizing the displacement of the disconnecting link and the movable contact, completing the on-off of the circuit breaker, and avoiding the high-temperature failure when the magnetic force disappears and the movable contact moves upwards.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vacuum circuit breaker technical field especially relates to a novel vacuum circuit breaker. BACKGROUND

[0002] Vacuum three-phase recloser is a kind of intelligent switch equipment for distribution network automation, with the function of automatically detecting and disconnecting fault current when line fault occurs, and then reclosing attempt according to preset time and sequence.This equipment can restore power supply after fault elimination, and lock in the open state after multiple reclosing failure attempts, isolating the fault section.Vacuum three-phase recloser uses vacuum arc extinguishing technology, uses vacuum environment to extinguish arc, has the advantages of fast operation speed, arc non-reignition, maintenance-free, etc., and is suitable for outdoor installation and does not depend on external operating power supply.

[0003] When vacuum three-phase recloser needs to be on-off, after receiving the closing signal, the operating mechanism drives the vacuum arc chamber to close, establishes circuit connection, under closed state, the load current of recloser bearing system, when system fault occurs, control unit detects fault current, after detecting fault, operating mechanism rapidly opens, disconnects circuit, cuts off fault current, after preset time delay, if it is judged as transient fault, recloser will automatically attempt to reclose circuit, if reclosing is successful and system recovers to normal, recloser will return to initial state, waiting for next operation;If reclosing fails, permanent fault is encountered, recloser will be locked in the open state until the fault is cleared and manually reset.

[0004] However, the on-off operation of the current vacuum three-phase recloser is mostly operated by permanent magnet mechanism, but the service life is gradually shortened due to high temperature or long time use, so that the vacuum three-phase recloser needs to be replaced.

[0005] Therefore, a new type of vacuum circuit breaker is proposed to solve or alleviate the above problems. UTILITY MODEL CONTENT

[0006] The utility model aims at solving the shortcomings in the prior art and provides a novel vacuum circuit breaker.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] The utility model provides a new vacuum circuit breaker, including detachable connection's upper casing and lower casing, the main drive shaft is rotatably connected in the upper casing and one end is through the upper casing, the slave drive shaft is rotably connected in the lower casing and one end is through the lower casing, the main drive shaft and slave drive shaft transmission connection, the upper casing top surface fixedly connected with static contact, the lower casing is slidably connected with the dynamic contact point through its bottom surface, the dynamic contact point with slave drive shaft transmission connection, the main drive shaft and static contact point between the transmission mechanism, the transmission mechanism is in static contact point energized state through the main drive shaft and slave drive shaft and drives the dynamic contact point to be located at the lowest level of horizontal height, contrarily the dynamic contact point is located at the highest level of horizontal height.

[0009] Preferably, the transmission mechanism includes an electromagnet fixedly connected in the upper casing, a conductive rod coupled with the electromagnet and the static contact, a metal spring horizontally arranged at one end of the electromagnet, and a pull rod fixedly connected at an end of the metal spring away from the electromagnet, the main drive shaft is fixedly connected with a main deflection sleeve, and the main deflection sleeve is rotatably connected with the pull rod.

[0010] Preferably, the lower casing is fixedly connected with a plurality of connecting seats, the plurality of connecting seats are fixedly connected with a connecting rod, the connecting seat is rotatably connected with a knife switch, one end of the knife switch away from the connecting seat is rotatably connected with the dynamic contact, the slave drive shaft is fixedly connected with a slave deflection sleeve, the slave deflection sleeve is rotatably connected with an arc-shaped crank, one end of the crank away from the slave deflection sleeve is rotatably connected with a connecting sleeve fixedly connected with the knife switch.

[0011] Preferably, the upper casing and the lower casing are both provided with through holes communicating with the interiors thereof, the static contact is fixedly connected in the through hole of the upper casing, and the dynamic contact is slidably connected in the through hole of the lower casing.

[0012] Preferably, the main drive shaft and the slave drive shaft are transmissionally connected through a transmission assembly.

[0013] Preferably, the transmission assembly includes a driving wheel, a driven wheel, and a transmission belt, the driving wheel is fixedly connected with the main drive shaft, the driven wheel is fixedly connected with the slave drive shaft, and the driving wheel and the driven wheel are transmissionally connected through the transmission belt.

[0014] The utility model has the following beneficial effects:

[0015] In operation, when the static contact is energized, the electromagnet is activated, a magnetic force is generated to attract the metal spring, the pull rod and the main deflection sleeve are pulled, the main drive shaft is driven to rotate, the driving wheel is driven to rotate, the driven wheel is synchronously deflected through the transmission belt, the slave drive shaft is driven to rotate, the slave deflection sleeve is deflected, the crank is actuated, the knife switch and the dynamic contact are moved downward, the circuit breaker is closed, when the electromagnet is de-energized, the dynamic contact is moved upward, and the circuit is opened. This design avoids the permanent magnet mechanism from being disabled by high temperature. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained without creative labor on the basis of the drawings.

[0017] Figure 1 is a structural schematic diagram of the present application;

[0018] Figure 2 is a structural schematic diagram of the present application after removing the upper shell and the lower shell;

[0019] Figure 3 is Figure 2 is an enlarged view of A in FIG. 4;

[0020] Figure 4 is Figure 2 is an enlarged view of B in FIG. 4.

[0021] 1, lower shell; 2, upper shell; 3, static contact; 4, conductive rod; 5, electromagnet; 6, metal spring; 7, pull rod; 8, main deflection sleeve; 9, main transmission shaft; 10, transmission bearing; 11, slave transmission shaft; 12, slave deflection sleeve; 13, crank arm; 14, connecting sleeve; 15, knife switch; 16, connecting rod; 17, connecting seat; 18, moving contact. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0024] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0025] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship commonly placed when the utility model product is used, or is the orientation or position relationship commonly understood by the person skilled in the art, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0026] In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0027] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "setting", "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] A novel vacuum circuit breaker, as shown in Figures 1 to 4 The utility model discloses a novel vacuum circuit breaker, as shown in the drawings, comprising detachably connected upper shell 2 and lower shell 1, the upper shell 2 is rotatably connected with the main transmission shaft 9 with one end through the upper shell 2, the lower shell 1 is rotatably connected with the slave transmission shaft 11 with one end through the lower shell 1, and the main transmission shaft 9 and the slave transmission shaft 11 are in transmission connection, the upper shell 2 top surface fixedly connected with static contact 3, the lower shell 1 is slidably connected with the dynamic contact 18 through its bottom surface, and the dynamic contact 18 is in transmission connection with the slave transmission shaft 11, and the main transmission shaft 9 and the static contact are provided with transmission mechanism, when the static contact is electrified, the transmission mechanism drives the dynamic contact 18 to be located at the lowest horizontal height through the main transmission shaft 9 and the slave transmission shaft 11, and vice versa, the dynamic contact 18 is located at the highest horizontal height, the upper shell 2 and the lower shell 1 are all provided with through hole that communicates with its interior, and the static contact is fixedly connected in the through hole in the upper shell 2, and the dynamic contact 18 is slidably connected in the through hole in the lower shell 1.

[0029] The transmission mechanism comprises an electromagnet 5 fixedly connected in the upper shell 2, a conductive rod 4 coupling the electromagnet 5 and the static contact, a metal spring 6 horizontally arranged at one end of the electromagnet 5, and a pull rod 7 fixedly connected at the end of the metal spring 6 away from the electromagnet 5, a main deflection sleeve 8 fixedly connected on a main transmission shaft 9, the main deflection sleeve 8 being rotationally connected with the pull rod 7, a plurality of connecting seats 17 fixedly connected in the lower shell 1, a connecting rod 16 fixedly connected with the connecting seats 17, a knife switch 15 rotationally connected with the connecting seat 17, one end of the knife switch 15 away from the connecting seat 17 being rotationally connected with a moving contact 18, a slave deflection sleeve 12 fixedly connected on a transmission shaft 11, an arc-shaped crank arm 13 rotationally connected with the slave deflection sleeve 12, and a connecting sleeve 14 fixedly connected on the knife switch 15 at one end of the crank arm 13 away from the slave deflection sleeve 12.

[0030] The main transmission shaft 9 and the slave transmission shaft 11 are drivingly connected through a transmission assembly, which comprises a driving wheel, a driven wheel, and a transmission belt, the driving wheel being fixedly connected on the main transmission shaft 9, the driven wheel being fixedly connected on the slave transmission shaft 11, and the driving wheel and the driven wheel being drivingly connected through the transmission belt.

[0031] When the static contact is electrified, the electromagnet 5 can be electrified through the conductive rod 4, the electromagnet 5 generates magnetic force after being electrified, the electromagnet 5 can attract the metal spring 6 through the magnetic force, the metal spring 6 can pull the pull rod 7 to displace, the pull rod 7 pulls the main deflection sleeve 8 to deflect, the main transmission shaft 9 rotates, the main transmission shaft 9 drives the driving wheel to rotate, the driving wheel drives the driven wheel to deflect through the transmission belt, the driven wheel drives the slave transmission shaft 11 to rotate, the slave transmission shaft 11 drives the slave deflection sleeve 12 to deflect, and then drives the crank arm 13 to deflect downward, the crank arm 13 drives the knife switch 15 to deflect relative to the connecting seat 17 through the connecting sleeve 14, the knife switch 15 can drive the moving contact 18 to displace downward, the moving contact 18 can displace to the lowermost position, and thus the vacuum circuit breaker is electrified, if the static contact is de-energized, the electromagnet 5 is de-energized and loses the magnetic force, the moving contact 18 can displace upward through a series of transmissions, the moving contact 18 is disconnected from the circuit, and thus the vacuum circuit breaker is not affected by the permanent magnet mechanism losing the effect due to high temperature.

[0032] The above only describes the preferred embodiments of the utility model, and is not used for limiting the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A novel vacuum circuit breaker characterized by, The utility model relates to a detachable connection upper shell (2) and lower shell (1), the upper shell (2) inside rotation connection has one end through the upper shell (2) main drive shaft (9), the lower shell (1) inside rotation connection has one end through the lower shell (1) from drive shaft (11), main drive shaft (9) and from drive shaft (11) drive connection, the upper shell (2) top fixed connection has static contact (3), the lower shell (1) inside sliding connection has through its bottom dynamic contact (18), dynamic contact (18) with from drive shaft (11) drive connection, main drive shaft (9) and static contact between the transmission mechanism are provided with, the transmission mechanism is in static contact electrification state when through main drive shaft (9) and from drive shaft (11) drive dynamic contact (18) to be located at the horizontal height most lower place, otherwise dynamic contact (18) then is located at the horizontal height most upper place.

2. A novel vacuum circuit breaker as claimed in claim 1, wherein, The transmission mechanism includes the electromagnet (5) fixedly connected in the upper shell (2), the electrically conductive rod (4) coupled with the electromagnet (5) and the static contact, the metal spring (6) horizontally arranged at one end of the electromagnet (5), and the pull rod (7) fixedly connected at the end of the metal spring (6) away from the electromagnet (5), the main deflection sleeve (8) is fixedly connected on the main drive shaft (9), and the main deflection sleeve (8) is rotationally connected with the pull rod (7).

3. A novel vacuum circuit breaker as claimed in claim 2, wherein, The lower shell (1) is fixedly connected with a plurality of connecting seats (17), and the connecting seats (17) are fixedly connected with a connecting rod (16) together, the connecting seat (17) is rotationally connected with the knife switch (15), one end of the knife switch (15) away from the connecting seat (17) is rotationally connected with the dynamic contact (18), the from deflection sleeve (12) is fixedly connected on the from drive shaft (11), the from deflection sleeve (12) is rotationally connected with the arc-shaped crank arm (13), one end of the crank arm (13) away from the from deflection sleeve (12) is rotationally connected with the connecting sleeve (14) fixedly connected on the knife switch (15).

4. A novel vacuum circuit breaker as claimed in claim 1, wherein, The upper shell (2) and the lower shell (1) are both provided with through holes communicating with the interiors thereof, the static contact is fixedly connected in the through hole of the upper shell (2), and the dynamic contact (18) is slidingly connected in the through hole of the lower shell (1).

5. A novel vacuum circuit breaker as claimed in claim 1, wherein, The main drive shaft (9) and the from drive shaft (11) are drive connected through a transmission assembly.

6. A novel vacuum circuit breaker as claimed in claim 5, wherein, The transmission assembly includes a driving wheel, a driven wheel, and a transmission belt, the driving wheel is fixedly connected on the main drive shaft (9), the driven wheel is fixedly connected on the from drive shaft (11), and the driving wheel and the driven wheel are drive connected through the transmission belt.

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