阅读说明：本技术 一种抽出式纵向隔离双断口真空断路器手车装置 (Drawout longitudinal isolation double-break vacuum circuit breaker handcart device ) 是由 黄在先 李浩亮 陈云 匡家喜 张昌满 于 2021-07-12 设计创作，主要内容包括：本发明公开了一种抽出式纵向隔离双断口真空断路器手车装置,包括手车本体、设置在手车本体上的真空断路器、设置于真空断路器上下两端的隔离开关、闭锁机构和合闸机构,真空断路器包括固定于手车本体上的断路器支架和设置于断路器支架上的固封极柱,固封极柱包括真空灭弧室和设置于真空灭弧室顶端的主回路导电件,主回路导电件的外侧依次包封有电流互感器的环形铁芯和极柱本体,电流互感器的输出绕组经设置于极柱本体外侧的固定螺栓底座引出后经导线与控制终端相连。本发明采用上述结构的抽出式纵向隔离双断口真空断路器手车装置,结构简单,体积小；回路大大减少多点接触避免多次搭接,仅依靠空气绝缘,可靠性强。(The invention discloses a drawout longitudinal isolation double-break vacuum circuit breaker handcart device, which comprises a handcart body, a vacuum circuit breaker arranged on the handcart body, isolating switches arranged at the upper end and the lower end of the vacuum circuit breaker, a locking mechanism and a switching-on mechanism, wherein the vacuum circuit breaker comprises a circuit breaker bracket fixed on the handcart body and a solid-sealed polar pole arranged on the circuit breaker bracket, the solid-sealed polar pole comprises a vacuum arc-extinguishing chamber and a main circuit conductive piece arranged at the top end of the vacuum arc-extinguishing chamber, the outer side of the main circuit conductive piece is sequentially encapsulated with an annular iron core and a polar pole body of a current transformer, and an output winding of the current transformer is connected with a control terminal through a lead after being led out through a fixing bolt base arranged on the outer side of the polar pole body. The draw-out type longitudinal isolation double-break vacuum circuit breaker handcart device adopting the structure has the advantages of simple structure and small volume; the loop greatly reduces multipoint contact, avoids repeated overlapping, only depends on air insulation, and has strong reliability.)

1. The utility model provides a vertical two break vacuum circuit breaker handcart device of isolation of pull-out type, includes the handcart body, sets up vacuum circuit breaker on the handcart body, set up in isolator, blocked mechanical system and the combined floodgate mechanism at vacuum circuit breaker upper and lower both ends, its characterized in that: vacuum circuit breaker is including being fixed in circuit breaker support on the handcart body with set up in gu seal utmost point post on the circuit breaker support, gu seal utmost point post include vacuum interrupter and set up in the main loop on vacuum interrupter top is electrically conductive, the outer side that the main loop is electrically conductive is sealed in proper order and is had current transformer's annular iron core and utmost point post body, current transformer's output winding through set up in it is continuous with control terminal through the wire after the fixing bolt base in the utmost point post body outside is drawn forth.

2. The draw-out type longitudinally isolated double break vacuum circuit breaker handcart device according to claim 1, characterized in that: the locking mechanism comprises a transmission main shaft and a linkage plate which are respectively rotatably connected with the upper end and the lower end of the solid-sealed polar pole, the linkage plate is connected with the transmission main shaft at the upper end through a crank arm, a power-assisted spring and an energy storage spring in sequence, the energy storage spring is also connected with the transmission main shaft at the lower end through a linkage pull rod, and the transmission main shaft is connected with the isolating switch.

3. The draw-out type longitudinally isolated double break vacuum circuit breaker handcart device according to claim 2, characterized in that: the switching-on mechanism comprises a switching-on button used for releasing energy stored by the energy storage spring after being pressed down, the energy storage spring is connected with a rotating shaft, and the rotating shaft is in flexible connection with the moving contact of the circuit breaker sequentially through a switching-on compression spring, an upper end insulating pull rod, a threaded rod and a lower end insulating pull rod.

4. The draw-out type longitudinally isolated double break vacuum circuit breaker handcart device according to claim 1, characterized in that: the main loop conductive piece is located at the center of the annular iron core of the current transformer, and the output winding of the current transformer is arranged at the top end of the vacuum arc extinguish chamber.

5. The draw-out type longitudinally isolated double break vacuum circuit breaker handcart device according to claim 1, characterized in that: the isolating switch and the solid-sealed polar pole are integrally formed and fixed on the breaker bracket.

6. The draw-out type longitudinally isolated double break vacuum circuit breaker handcart device according to claim 1, characterized in that: and the main loop conductor, the current transformer and the vacuum arc-extinguishing chamber are encapsulated by an APG pressing process.

7. The draw-out type longitudinally isolated double break vacuum circuit breaker handcart device according to claim 1, characterized in that: the current transformer is encapsulated outside the main loop conductor and inside the pole body through insulating resin.

8. The draw-out type longitudinally isolated double break vacuum circuit breaker handcart device according to claim 1, characterized in that: at least two current transformers are sleeved on the outer side of the main loop conductor.

9. The draw-out type longitudinally isolated double break vacuum circuit breaker handcart device according to claim 1, characterized in that: the current transformer is an annular current transformer, and an annular iron core of the current transformer is an amorphous iron core.

10. The draw-out type longitudinally isolated double break vacuum circuit breaker handcart device according to claim 1, characterized in that: the rotating main shaft is made of plastic insulating materials.

Technical Field

The invention relates to a circuit breaker technology, in particular to a drawout type longitudinal isolation double-break vacuum circuit breaker handcart device.

Background

The vacuum circuit breaker is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum, and has the advantages of small volume, no need of maintenance for arc extinguishing and the like. The basic structure of the double-break vacuum circuit breaker is formed by connecting two vacuum circuit breakers with single-break arc extinguish chambers in series. The existing circuit breakers are communicated with a main circuit through plum blossom contacts or flat contacts, and the circuit breakers do not have current signal or voltage signal acquisition functions and need to rely on external signal acquisition and control, so that the control function of switching-on and switching-off actions is realized.

Disclosure of Invention

The invention aims to provide a drawout type longitudinal isolation double-break vacuum circuit breaker handcart device which is simple in structure and small in size; the loop greatly reduces multipoint contact, avoids repeated overlapping, only depends on air insulation, and has strong reliability.

In order to achieve the purpose, the invention provides a drawout type longitudinal isolation double-break vacuum circuit breaker handcart device which comprises a handcart body, a vacuum circuit breaker arranged on the handcart body, isolation switches arranged at the upper end and the lower end of the vacuum circuit breaker, a locking mechanism and a switching-on mechanism, wherein the vacuum circuit breaker comprises a circuit breaker support fixed on the handcart body and a solid-sealed polar pole arranged on the circuit breaker support, the solid-sealed polar pole comprises a vacuum arc extinguish chamber and a main circuit conductive piece arranged at the top end of the vacuum arc extinguish chamber, an annular iron core and a polar pole body of a current transformer are sequentially packaged on the outer side of the main circuit conductive piece, and an output winding of the current transformer is connected with a control terminal through a wire after being led out through a fixing bolt base arranged on the outer side of the polar pole body.

Preferably, the locking mechanism comprises a transmission main shaft and a linkage plate which are respectively rotatably connected with the upper end and the lower end of the solid-sealed pole, the linkage plate is sequentially connected with the transmission main shaft at the upper end through a crank arm, a power-assisted spring and an energy storage spring, the energy storage spring is further connected with the transmission main shaft at the lower end through a linkage pull rod, and the transmission main shaft is connected with the isolating switch.

Preferably, the closing mechanism comprises a closing button for releasing energy stored by the energy storage spring after being pressed down, the energy storage spring is connected with a rotating shaft, and the rotating shaft is in flexible connection with the moving contact of the circuit breaker sequentially through a closing compression spring, an upper end insulating pull rod, a threaded rod and a lower end insulating pull rod.

Preferably, the main circuit conductive piece is located at the center of an annular iron core of the current transformer, and an output winding of the current transformer is arranged at the top end of the vacuum arc extinguish chamber.

Preferably, the isolating switch and the solid-sealed pole are integrally formed and fixed on the breaker bracket.

Preferably, the main circuit conductor, the current transformer and the vacuum interrupter are encapsulated by an APG pressing process.

Preferably, the current transformer is encapsulated outside the main circuit conductor and inside the pole body via an insulating resin.

Preferably, at least two current transformers are sleeved outside the main loop conductor.

Preferably, the current transformer is an annular current transformer, and an annular iron core of the current transformer is an amorphous iron core.

Preferably, the rotating main shaft is made of plastic insulating materials.

Therefore, the draw-out type longitudinal isolation double-break vacuum circuit breaker handcart device adopting the structure has the advantages of simple structure and small volume; the loop greatly reduces multipoint contact, avoids repeated overlapping, only depends on air insulation, and has strong reliability.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

Fig. 1 is a cross-sectional view of a drawout type longitudinally isolated double-break vacuum circuit breaker handcart device according to an embodiment of the invention.

Wherein: 1. an interlock plate; 2. a power-assisted spring; 3. an energy storage spring; 4. a closing button; 5. an isolating switch; 6. a pole body; 7. a current transformer; 8. a fixing bolt base; 9. a circuit breaker cradle; 10. a rotating shaft; 11. closing a compression spring; 12. an upper end insulation pull rod; 13. a threaded rod; 14. the lower end is an insulated pull rod.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed implementation and the specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.

Fig. 1 is a cross-sectional view of a drawout type longitudinal isolation double-break vacuum circuit breaker handcart device according to an embodiment of the invention; as shown in the figure, the structure of the invention comprises a handcart body, a vacuum circuit breaker arranged on the handcart body, isolating switches 5 arranged at the upper end and the lower end of the vacuum circuit breaker, a locking mechanism and a closing mechanism, wherein the vacuum circuit breaker comprises a circuit breaker bracket 9 fixed on the handcart body and a solid-sealed polar pole arranged on the circuit breaker bracket 9, the solid-sealed polar pole comprises a vacuum arc-extinguishing chamber and a main loop conductive piece arranged at the top end of the vacuum arc-extinguishing chamber, the outer side of the main loop conductive piece is sequentially encapsulated with an annular iron core of a current transformer 7 and a polar pole body 6, and an output winding of the current transformer 7 is led out through a fixing bolt base 8 arranged on the outer side of the main loop conductive piece and then is connected with a control terminal through a wire.

Specifically, blocked mechanical system include respectively with both ends rotate the transmission main shaft and the interlocking board 1 of connecting about the solid utmost point post, interlocking board 1 connects the upper end through turning arm, helping hand spring 2, energy storage spring 3 in proper order the transmission main shaft, energy storage spring 3 still connects the lower extreme through the linkage pull rod the transmission main shaft, the transmission main shaft with isolator 5 connects, and under interlocking board 1 removes the state about, operating handle placed and controls downtheholely, rotatory energy storage spring 3 of driving left or right, realize the energy storage after, the transmission main shaft drives isolator 5 and rotates left or rotate right and realize the divide-shut brake operation.

Preferably, closing mechanism is including being used for releasing after pressing the closing button 4 of energy storage spring 3 energy storage, energy storage spring 3 is connected with the pivot, pivot 10 is in proper order through closing compression spring 11, upper end insulating pull rod 12, threaded rod 13, the 14 flexible couplings of lower extreme insulating pull rod the moving contact of circuit breaker presses closing button 4, drives the moving contact rebound through pivot 10, closing compression spring 11, upper end insulating pull rod 12, threaded rod 13, lower extreme insulating pull rod 14 in proper order, realizes the circuit breaker closing.

Preferably, the main circuit conductive piece is located at the center of the annular iron core of the current transformer 7, and the output winding of the current transformer 7 is arranged at the top end of the vacuum arc-extinguishing chamber.

Preferably, the isolating switch 5 and the solid-sealed pole are integrally formed and fixed on the breaker bracket 9.

Preferably, the main circuit conductor, the current transformer 7 and the vacuum interrupter are encapsulated by an APG pressing process.

Preferably, the current transformer 7 is encapsulated outside the main circuit conductor and inside the pole body 6 via an insulating resin.

Preferably, at least two current transformers 7 are sleeved outside the main circuit conductor.

Preferably, the current transformer 7 is an annular current transformer 7, and an annular iron core of the current transformer 7 is an amorphous iron core.

Preferably, the rotating main shaft is made of plastic insulating materials.

Therefore, the draw-out type longitudinal isolation double-break vacuum circuit breaker handcart device adopting the structure has the advantages of simple structure and small volume; the loop greatly reduces multipoint contact, avoids repeated lap joint, only depends on air insulation, has strong reliability, can be drawn out, has reasonable layout and high parameters, and is convenient for product maintenance; no harmful gas is generated, all parts can be recycled after reaching the service life, the environmental protection performance of the product is greatly improved, the overall dimension of the high-voltage switch is greatly reduced, and the use of non-ferrous metals and the discharge of harmful objects and liquid generated by surface treatment are reduced, so that the environment-friendly requirement is met.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.