CN204332863U

CN204332863U - QA shunting device

Info

Publication number: CN204332863U
Application number: CN201520043174.6U
Authority: CN
Inventors: 贾建军; 陈宏基; 杨志兵; 杨志轶; 鲁昕
Original assignee: SIEYUAN QINGNENG POWER ELECTRONIC Co Ltd
Current assignee: SIEYUAN QINGNENG POWER ELECTRONIC Co Ltd
Priority date: 2015-01-22
Filing date: 2015-01-22
Publication date: 2015-05-13
Anticipated expiration: 2025-01-22

Abstract

The utility model discloses a kind of QA shunting device, comprise shell, comprise: fixed contact in described shell, the quantity of described fixed contact is two, and described fixed contact is located in the fixed contact notch of shell, is separated between two fixed contacts by cross-over block; Sliding bar, it is located in the gathering sill in shell, and the inner of described sliding bar is installed with moving contact, and the position of described moving contact is relative with the position of described fixed contact; The outer end of described sliding bar is provided with boss, and the inner of the outer sheathed main spring of described boss, the outer end of described main spring is connected with the inner side of described shell, tripping mechanism, and it is connected with described sliding bar, for controlling the motion of sliding bar.This shunting device can realize the bypass functionality of quick-make, and operate time is about between several milliseconds to several ms; This device possesses machinery and keeps function, can remain on disconnection and make position, and machinery keeps function to make shunting device not easily by ectocine, runs with making system stability.

Description

QA shunting device

Technical field

The utility model relates to the bypass technology of electric power system, more particularly, relates to the QA shunting device of one in SVG system.

Background technology

In SVG system, SVG module is connected mutually, and when certain SVG module breaks down, major loop switch cuts off by system, after complete machine is shut down, by people for after fixing a breakdown, then restores electricity.Generally, SVG system is installed on remote districts, and personnel are difficult to reach the spot in the very first time fix a breakdown thus restore electricity, and the indirect economic loss simultaneously caused after SVG system cut-off is larger.Shunting device is mainly used at short notice, automatically quick by fault components and parts or malfunctioning module short circuit, thus ensures that SVG system restores electricity rapidly in not shutdown situation, and loss power-off caused is down to minimum.

The circuit breaker (breaker of plastic casing) of conventional contact and band electrically operated institution also can realize the function of closed bypass, but: 1) conventional contact adopts the principle of electromagnetism adhesive, be applicable to the loop frequently closed, need to be closed for a long time by holding contact of powering for a long time, do not possess the function 2 that machinery remains closed) be with the circuit breaker (breaker of plastic casing) of electrically operated institution after receiving system signal, start electrically operated institution and complete closed bypass action, this action is consuming time be generally about 1 second even longer, the needs that can not meet quick bypass are asked, and the circuit breaker (breaker of plastic casing) of existing band electrically operated institution is owing to being subject to SVG system module size restrictions, general volume is bigger than normal, difficulty is installed, and cost is higher, economy is poor.

Disclosed typical shunting device has following several at present:

1) CN104022442A discloses a kind of QA by-pass switch, this switch is electric, when between high-field electrode and ground electrode, voltage difference reaches certain numerical value, high-field electrode and ground electrode are understood disruptive discharge thus realize loop conducting, reach the function of quick bypass.When there is components and parts or module failure in electric power system, pressure reduction between by-pass switch the two poles of the earth not necessarily can be stablized, and differ and reach reliable conducting requirement surely, situation about cutting off during conducting when therefore very likely occurring, this brings great potential safety hazard to whole system.

2) CN103123873A discloses a kind of bypass isolating switch.This switch realizes bypass functionality by conduction the closed of disconnecting link, fault components and parts or malfunctioning module short circuit is separated from loop, and then carries out service work.This isolating switch needs manually to realize bypass, does not possess automatic and QA function.

3) CN102347173A discloses a kind of low-voltage switch failure by-pass switch.This switch, by breaker of plastic casing and bus, cable combination, when operating mechanism mechanism connects with bus, realizes connecting from different bus by rotary handle.When circuit breaker breaks down, this device can replace different size brand circuit breaker, makes loop Power resumption.This device is not by-pass switch truly, can not realize fault components and parts or the fast automatic short circuit of malfunctioning module.

Utility model content

For the defect existed in prior art, the purpose of this utility model is to provide a kind of QA shunting device.

For achieving the above object, the utility model adopts following technical scheme:

A kind of QA shunting device, comprises shell, comprises in described shell:

Fixed contact, the quantity of described fixed contact is two, and described fixed contact is located in the fixed contact notch of shell, is separated between two fixed contacts by cross-over block;

Sliding bar, it is located in the gathering sill in shell, and the inner of described sliding bar is installed with moving contact, and the position of described moving contact is relative with the position of described fixed contact; The outer end of described sliding bar is provided with boss, the inner of the outer sheathed main spring of described boss, and the outer end of described main spring is connected with the inner side of described shell,

Tripping mechanism, it is connected with described sliding bar, for controlling the motion of sliding bar.

Described tripping mechanism comprises:

Triangle boss, it is fixedly arranged on sliding bar;

Fixed head, it is fixedly arranged in shell;

Dropout part, it is L-shaped, described L " both sides intersection in shape is connected with the inner of rotation axis, and the outer end of described rotation axis is fixedly connected with described shell; The exterior arc surface of minor face in described " L " shape dropout part and the outer end of triangle boss offset; The long limit of described dropout part is provided with iron core impact boss;

Electromagnet, it is fixedly arranged on fixed head, and the position of the iron core outer end in described electromagnet is relative with the position that described iron core impacts boss;

Back-moving spring, its one end is connected with described fixed head, and the other end is connected with the long limit in " L " shape dropout part, and this tie point and iron core impact the relative both sides that boss lays respectively at the long limit in " L " shape dropout part;

When electromagnet receive by-passing signal obtain electric time, iron core in electromagnet promotes iron core impact boss, and the dropout part moving axis that rotates is rotated, and back-moving spring is compressed simultaneously; After the exterior arc surface of the minor face in described " L " shape dropout part and described triangle boss depart from, under the potential energy release action of main spring, described sliding bar drives described moving contact to move to described fixed contact, and described moving contact and described fixed contact are compressed.

Also comprise reseting handle assembly, described reseting handle assembly comprises pressing plate, bearing and handle, and described bearing is located in pressing plate, and described pressing plate is connected with the outside of described shell; The inner of described handle is passed bearing and is connected by screw thread with the outer end of described sliding bar.

Compared with prior art, adopt the QA shunting device of one of the present utility model, can realize the bypass functionality of quick-make, operate time is about between several milliseconds to several ms; This device possesses machinery and keeps function, can remain on disconnection and make position, and machinery keeps function to make shunting device not easily by ectocine, runs with making system stability.This device, after failture evacuation, adopts independently reset assembly to realize resetting, can effectively pre-fool proof generation.

Accompanying drawing explanation

Fig. 1 is the overall appearance axonometric drawing of embodiment of the present utility model;

Fig. 2 is the shunting device body interior front view (gate-dividing state) in Fig. 1;

Fig. 3 is the shunting device body interior vertical view (gate-dividing state) in Fig. 1;

Fig. 4 is the shunting device body interior front view ("on" position) in Fig. 1;

Fig. 5 is the shunting device body interior vertical view ("on" position) in Fig. 1;

Fig. 6 is that the reseting handle assembly in Fig. 1 connects schematic diagram with shunting device body;

In figure: 1 is shunting device body, 2 be reseting handle assembly 3 is fixed contact, and 4 is moving contact, 5 is sliding bar, and 6 is main spring, and 7 is electromagnet, 8 is dropout part, and 9 is rotation axis, and 10 is back-moving spring, 11 is fixed head, 12 is cross-over block, and 13 is shell, and 14 is pressing plate, 15 is bearing, and 16 is handle.

Embodiment

The technical solution of the utility model is further illustrated below in conjunction with drawings and Examples.

Embodiment

Refer to the QA shunting device of one shown in Fig. 1 to be made up of two parts, a part is shunting device body, and another part is reseting handle assembly.

Shunting device body 1 comprises following assembly: fixed contact 3, moving contact 4, sliding bar 5, main spring 6, electromagnet 7, dropout part 8, rotation axis 9, back-moving spring 10, fixed head 11, cross-over block 12 and shell 13.Fixed contact 3 is installed in the fixed contact notch of shell 13, and two fixed contacts by cross-over block 12 separately; Moving contact 4 is secured by bolts on sliding bar 5; Sliding bar 5 to be arranged in gathering sill that enclosure offers and can to horizontally slip, and sliding bar 5 is provided with a triangle boss, and sliding bar 5 right side opening is provided with a screwed hole; Main spring 6 one end acts on the right side of sliding bar 5, and the other end acts on inside shell 13; Rotation axis 9 is arranged in the hole of shell 13, and dropout part 8 passing hole is arranged on rotation axis 9, and dropout part 8 moving axis 9 that can rotate rotates; Fixed head 11 is secured by bolts in shell 13, and back-moving spring 10 one end is sheathed on the bolt of on fixed head 11, and the other end is sheathed on the boss of dropout part 8 side; Dropout part 8 opposite side iron core impact boss is other is provided with electromagnet 7, and electromagnet 7 is secured by bolts on fixed head 11, and the iron core of electromagnet 7 can impact boss with the iron core of dropout part 8 and contact with each other.

Reseting handle assembly 2 comprises following assembly: pressing plate 14, bearing 15 and handle 16.Bearing 15 is installed in pressing plate 14, and handle 16 coordinates with bearing 15 and to connect and can flexible rotating; Handle 16 side offers screw thread, coordinates connect with sliding bar 5 upper screwed hole.Reseting handle assembly is used for after failture evacuation confirms, realizes shunting device and resets

Under normal condition, the device that passes into others' hands is connected with electric power system by fixed contact, is in gate-dividing state (Fig. 2, Fig. 3).Main spring 6 is in compressive state, the bolt that the outer end of dropout part 8 is fixed on plate 11 is spacing, the triangle boss of dropout part 8 other end arc surface and sliding bar 5 lower end interacts, and stops sliding bar 5 (comprising the moving contact 4 on it) to move to fixed contact 3.

When the components and parts in electric power system or module break down, shunting device receives the by-passing signal that system sends, and electromagnet 7 iron core promotes iron core impact boss corresponding on dropout part 8, and dropout part 8 is turned clockwise, and back-moving spring 10 is compressed simultaneously.After the triangle boss of arc surface on dropout part 8 and sliding bar 5 lower end departs from, under the effect of main spring 6, sliding bar 5 drives moving contact 4 on it to fixed contact 3 rapid movement, final moving contact 4 is pressed on fixed contact 3 by the residual pressure of main spring 6, achieves bypass functionality (loop conducting); Simultaneously under the effect of main spring 6, shunting device machinery remains on "on" position; After the triangle boss of arc surface on dropout part 8 and sliding bar 5 lower end departs from, electromagnet power-off, dropout part 8 is rotated counterclockwise under the effect of back-moving spring 10, and dropout part 8 promotes the plunger return of electromagnet 7, and one end of final dropout part 8 is pressed on fixed head 11 bolt.After closing a floodgate, the state of shunting device body as shown in Figure 4, Figure 5.

After the module failure in SVG system confirms and obtains reparation, need to disconnect shunting device (namely shunting device separating brake resets).Reseting handle assembly 2 is screwed in the screwed hole on the right side of sliding bar 5, draw (Fig. 6) by constantly rotating or screwing in outside rear entirety, make the triangle boss of sliding bar 5 lower end cross the arc surface of dropout part 8, outer drawing can be stopped.Now, Handleset 2 reverse rotation is gone out sliding bar 5, completes homing action.SVG removal of faults on system recovers, and normally works.After resetting, the state of shunting device body as shown in Figure 2.

Those of ordinary skill in the art will be appreciated that, above embodiment is only used to the purpose of this utility model is described, and be not used as restriction of the present utility model, as long as in essential scope of the present utility model, the change of the above embodiment, modification all will be dropped in the scope of claim of the present utility model.

Claims

1. a QA shunting device, comprises shell, it is characterized in that, comprises in described shell:

2. shunting device according to claim 1, is characterized in that, described tripping mechanism comprises:

Triangle boss, it is fixedly arranged on sliding bar;

Fixed head, it is fixedly arranged in shell;

3. shunting device according to claim 1, is characterized in that, also comprises reseting handle assembly, and described reseting handle assembly comprises pressing plate, bearing and handle, and described bearing is located in pressing plate, and described pressing plate is connected with the outside of described shell; The inner of described handle is passed bearing and is connected by screw thread with the outer end of described sliding bar.