CN219497578U

CN219497578U - Dual-power switching structure for transformer area

Info

Publication number: CN219497578U
Application number: CN202321002390.7U
Authority: CN
Inventors: 罗焘; 李沛霖; 杨捷; 成冰; 吴寄; 叶亮; 裴建昀; 李星达
Original assignee: Yunnan Power Grid Co Ltd
Current assignee: Yunnan Power Grid Co Ltd
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2023-08-08
Anticipated expiration: 2033-04-27

Abstract

The utility model relates to the technical field of power switching, in particular to a transformer area double-power switching structure which is arranged in a transformer of a transformer area and comprises the following components: the connecting frame is provided with a fixed contact; the operation mechanism is arranged on the connecting frame and comprises a transverse offset assembly and an energy storage assembly, wherein the transverse offset assembly is connected with two moving contacts, and when the transverse offset assembly is positioned at the stroke end, one group of moving contacts can be abutted with the fixed contacts; the action assembly is connected with one of the moving contacts, the action assembly is matched with the energy storage assembly, and can drive the transverse offset assembly to act so as to reduce the generation of electric arcs, improve the connection stability between the contacts, timely switch the power supply when the current in the main power supply circuit is abnormal, avoid the deterioration of dangerous situations, reduce the property loss and improve the stability of power supply of a platform area.

Description

Dual-power switching structure for transformer area

Technical Field

The utility model relates to the technical field of power switching, in particular to a double-power-supply switching structure of a transformer area.

Background

In order to innovate a marketing management mechanism, unify and standardize business and responsibility of a basic-level power supply business office, the concept of a platform region is generated due to operation, and the operation efficiency of a power system is greatly improved by the aid of the platform region, namely a power supply range or region of a single transformer.

Most of the existing power supply modes of the transformer areas are changed from the original single power supply to multiple power supplies, and even in some areas with strict power supply, the multiple power supplies are realized, so that stable and continuous power supply is ensured. The existing dual-power supply mode can realize two power supply modes of one power supply unit so as to avoid the phenomenon of power interruption.

The existing double-power switching device mostly adopts an alternating current series excited motor to cooperate with a gearbox for switching, and can drive a switch push rod to reciprocate when the series alternating current motor runs, so that the separation and the connection of contacts are completed, and the power switching are realized.

Disclosure of Invention

The present utility model is directed to a dual power switching structure for a transformer area, so as to solve the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a dual power switching structure for a transformer area, installed in a transformer area, comprising:

the connecting frame is provided with a fixed contact;

the operation mechanism is arranged on the connecting frame and comprises a transverse offset assembly and an energy storage assembly, wherein the transverse offset assembly is connected with two moving contacts, and when the transverse offset assembly is positioned at the stroke end, one group of moving contacts can be abutted with the fixed contacts;

and the action component is connected with one of the movable contacts, and is matched with the energy storage component, so that the transverse offset component can be driven to act.

As a further scheme of the utility model: the transverse offset assembly comprises a turntable and a truss plate which are arranged on the connecting frame, wherein two sliding parts are symmetrically arranged on the truss plate and are in sliding connection with a guide rod fixed on the connecting frame;

two ends of the truss plate are respectively connected with the two moving contacts;

the transverse offset assembly further comprises an embedded structure for connecting the truss plate and the turntable.

As still further aspects of the utility model: the jogged structure is including setting up pulley on the carousel and fixing connecting portion on the truss-like board, connecting portion have seted up along its length direction and hold the hysteresis groove, the pulley can be in hold the interior roll of hysteresis groove.

As still further aspects of the utility model: the energy storage assembly comprises a fixing part fixedly arranged on the connecting frame, a connecting rod is slidably arranged on the fixing part, one end of the connecting rod is fixedly provided with a limiting ring, and the other end of the connecting rod is rotatably provided with a jogging wheel;

a cylindrical spring is sleeved on the connecting rod, one end of the cylindrical spring is connected with the limiting ring, and the other end of the cylindrical spring is connected with the fixing part;

the energy storage assembly further comprises a guide groove arranged on the rotary disc, and the embedded wheel can roll in the guide groove.

As still further aspects of the utility model: the guide way comprises a first straight groove body and a second straight groove body, wherein the first straight groove body is communicated with the second straight groove body, and the first straight groove body and the second straight groove body form a certain angle.

As still further aspects of the utility model: the action assembly comprises a first line and a second line which are connected with the two moving contacts, and the first line is electrically connected with the induction attraction module fixed on the connecting frame;

and a power supply and an electromagnet are arranged in the induction attraction module.

As still further aspects of the utility model: and an iron block is also fixed on the turntable, and can drive the turntable to rotate when the induction attraction module is electrified.

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

through the operating mechanism, on one hand, when the main power supply or the auxiliary power supply is performed, a certain safety distance exists between the moving contact and the fixed contact which are separated from the fixed contact, so that an electric arc is avoided in the power transmission process, on the other hand, when the main power supply or the auxiliary power supply is performed, the elasticity of the cylindrical spring is balanced by the abutting force between the moving contact and the fixed contact, so that the connection stability and the firmness between the moving contact and the fixed contact are provided, and in the switching process, the cylindrical spring can enable the turntable to rotate rapidly through releasing elastic potential energy to enable the moving contact and the fixed contact to be combined rapidly, so that the speed is faster in the switching process, the time interval in the power switching process is shortened, and the adverse effect brought in the power switching process is reduced;

through the action assembly that sets up, when the electric current in main power supply line is unusual, in time carry out the switch of power, avoid dangerous condition to worsen, reduce loss of property, improved the stability of district power supply.

Drawings

Fig. 1 is a schematic diagram of a dual power switching structure of a station.

Fig. 2 is a schematic structural diagram of a lateral offset component in an embodiment of a dual power switching architecture.

Fig. 3 is a schematic structural diagram of an operating mechanism in an embodiment of a dual power switching structure of a platform.

Fig. 4 is a schematic structural diagram of another angle of the operating mechanism in one embodiment of the dual power switching structure.

Fig. 5 is a schematic structural diagram of a guide slot and a fitting wheel in an embodiment of a dual power switching structure of a platform.

In the figure: 1. a connecting frame; 2. a turntable; 3. a pulley; 4. a connection part; 5. a stagnation-accommodating groove; 6. a truss plate; 7. a sliding part; 8. a guide rod; 9. a moving contact; 10. a stationary contact; 11. a guide groove; 12. a fitting wheel; 13. a connecting rod; 14. a limiting ring; 15. a fixing part; 16. a cylindrical spring; 17. an induction attraction module; 18. iron blocks; 19. a first line; 20. and a second line.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In addition, an element in the present disclosure may be referred to as being "fixed" or "disposed" on another element or being directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 5, in an embodiment of the present utility model, a dual power switching structure for a transformer area is installed in a transformer area, and includes: a connecting frame 1, an operating mechanism and an operating component.

The connecting frame 1 is provided with a fixed contact 10;

the operating mechanism is arranged on the connecting frame 1 and comprises a transverse shifting component and an energy storage component, wherein the transverse shifting component is connected with two moving contacts 9, and when the transverse shifting component is at the stroke end, one group of moving contacts 9 can be abutted with a fixed contact 10;

the transverse offset assembly comprises a turntable 2 rotatably mounted on the connecting frame 1 and a truss plate 6 movably arranged on the connecting frame 1, two sliding parts 7 are symmetrically arranged on the truss plate 6, and the sliding parts 7 are in sliding connection with a guide rod 8 fixed on the connecting frame 1;

two ends of the truss plate 6 are respectively connected with the two movable contacts 9;

the transverse offset assembly further comprises an embedded structure for connecting the truss plate 6 and the turntable 2, the embedded structure comprises a pulley 3 arranged on the turntable 2 and a connecting part 4 fixed on the truss plate 6, the connecting part 4 is provided with a retaining groove 5 along the length direction, and the pulley 3 can roll in the retaining groove 5;

the energy storage assembly comprises a fixing part 15 fixedly arranged on the connecting frame 1, a connecting rod 13 is slidably arranged on the fixing part 15, a limiting ring 14 is fixed at one end of the connecting rod 13, and a jogging wheel 12 is rotatably arranged at the other end of the connecting rod 13;

a cylindrical spring 16 is sleeved on the connecting rod 13, one end of the cylindrical spring 16 is connected with the limiting ring 14, and the other end of the cylindrical spring 16 is connected with the fixing part 15;

the energy storage assembly further comprises a guide groove 11 arranged on the rotary disc 2, the embedded wheel 12 can roll in the guide groove 11, the guide groove 11 comprises a first straight groove body and a second straight groove body, the first straight groove body is communicated with the second straight groove body, and the first straight groove body and the second straight groove body are at a certain angle.

In use, power is supplied via line one 19, referred to as the primary power supply, and power is supplied via line two 20, referred to as the secondary power supply.

In the initial state (main power supply), the moving contact 9 connected with the first line 19 is in an abutting state with the fixed contact 10, the cylindrical spring 16 is in a compressed state, when the current in the main power supply line exceeds a preset value, in order to protect the line from being burnt, the action component acts to drive the rotary table 2 to rotate, when the rotary table 2 rotates, the pulley 3 arranged at the eccentric position of the rotary table 2 moves in a circular manner to drive the connecting part 4 to move, the truss plate 6 moves along the length direction of the guide rod 8, when the truss plate 6 moves, the moving contact 9 connected with the first line 19 is separated from the fixed contact 10, meanwhile, when the rotary table 2 rotates, the embedded wheel 12 moves towards the joint of the first straight groove body and the second straight groove body by the first straight groove body, in this process, the cylindrical spring 16 is further compressed until when the rotary table 2 rotates, when the embedded wheel 12 moves to the joint of the first straight groove body and the second straight groove body moves, when the rotary table 2 continues to rotate, the cylindrical spring 16 releases potential energy to enable the second straight groove body to be connected with the fixed contact 10 by pulling the second straight groove body, and the power supply potential energy is switched to the main power supply line 20.

When the turntable 2 rotates, the pulley 3 rolls in the accommodating groove 5 while doing circular motion, and in a stable state (when the main power supply or the auxiliary power supply is performed), the pulley 3 does not move to the end part of the accommodating groove 5, and at the moment, the elasticity of the cylindrical spring 16 balances against the abutting force between the moving contact 9 and the fixed contact 10, so that the connection stability and the firmness between the moving contact 9 and the fixed contact 10 are provided.

Through the arrangement, on one hand, when the main power supply or the auxiliary power supply is performed, a certain safety distance exists between the moving contact 9 separated from the fixed contact 10 and the fixed contact 10, so that an electric arc is avoided in the process of transmitting power, on the other hand, when the main power supply or the auxiliary power supply is performed, the elasticity of the cylindrical spring 16 is balanced by means of the abutting force between the moving contact 9 and the fixed contact 10, so that the connection stability and firmness between the moving contact 9 and the fixed contact 10 are provided, and in the switching process, the cylindrical spring 16 can enable the turntable 2 to rapidly rotate by releasing elastic potential energy to enable the moving contact 9 and the fixed contact 10 to be combined rapidly, so that the speed is faster in the switching process, the time interval in the power switching process is shortened, and the adverse effect brought in the power switching process is reduced.

Referring to fig. 1, 3, 4 and 5, the motion component is connected with one of the moving contacts 9, and the motion component is matched with the energy storage component and can drive the transverse offset component to move;

the action assembly comprises a first line 19 and a second line 20 which are connected with the two moving contacts 9, and the first line 19 is electrically connected with the induction attraction module 17 fixed on the connecting frame 1;

a power supply and an electromagnet are arranged in the induction attraction module 17;

an iron block 18 is fixed on the turntable 2, and the iron block 18 can drive the turntable 2 to rotate when the induction attraction module 17 is electrified.

The induction attraction module 17 is internally provided with a current detection device, when the induction attraction module is used, the current detection device can detect the current in the first line 19 and compare the current with a preset value, when the current value in the first line 19 exceeds the preset value, a power supply is turned on, an electromagnet is electrified, magnetic force is generated by the electromagnet in an electrified state, the iron block 18 is attracted, the rotary table 2 is driven to rotate through the iron block 18, one moving contact 9 is separated from the fixed contact 10, and the other moving contact 9 is combined with the fixed contact 10, so that double-power supply switching is realized.

Through the arrangement, when the current in the first line 19 is abnormal, the power supply can be switched in time, so that dangerous situation deterioration is avoided, property loss is reduced, and the stability of power supply of the transformer area is improved.

After the power supply of the main power supply is switched to the power supply of the auxiliary power supply, the buzzer in the induction attraction module 17 sounds so that the transformer can be found out more quickly and repaired in time when the staff overhauls;

further, after repair is completed, the line needs to be switched back to the main power supply.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a district dual supply switch structure installs in district transformer, its characterized in that includes:

the connecting frame (1), the connecting frame (1) is provided with a static contact (10);

the operation mechanism is arranged on the connecting frame (1) and comprises a transverse shifting component and an energy storage component, wherein the transverse shifting component is connected with two moving contacts (9), and when the transverse shifting component is at the stroke end, one group of moving contacts (9) can be abutted with the fixed contact (10);

and the action component is connected with one of the movable contacts (9), is matched with the energy storage component and can drive the transverse offset component to act.

2. A dual power switching structure for a transformer area according to claim 1, wherein the lateral offset assembly comprises a turntable (2) arranged on the connecting frame (1) and a truss plate (6), two sliding parts (7) are symmetrically arranged on the truss plate (6), and the sliding parts (7) are in sliding connection with a guide rod (8) fixed on the connecting frame (1);

the two ends of the truss plate (6) are respectively connected with the two moving contacts (9);

the transverse offset assembly further comprises an embedded structure for connecting the truss plate (6) and the turntable (2).

3. The dual power switching structure of a transformer area according to claim 2, wherein the jogged structure comprises a pulley (3) arranged on the turntable (2) and a connecting part (4) fixed on the truss plate (6), the connecting part (4) is provided with a retaining groove (5) along the length direction thereof, and the pulley (3) can roll in the retaining groove (5).

4. The dual-power switching structure of a platform area according to claim 2, wherein the energy storage component comprises a fixing part (15) fixedly installed on the connecting frame (1), a connecting rod (13) is slidably installed on the fixing part (15), one end of the connecting rod (13) is fixedly provided with a limiting ring (14), and the other end of the connecting rod is rotatably provided with a jogging wheel (12);

a cylindrical spring (16) is sleeved on the connecting rod (13), one end of the cylindrical spring (16) is connected with the limiting ring (14), and the other end of the cylindrical spring is connected with the fixing part (15);

the energy storage assembly further comprises a guide groove (11) arranged on the rotary disc (2), and the embedded wheel (12) can roll in the guide groove (11).

5. The dual-power switching structure of a transformer area according to claim 4, wherein the guiding groove (11) comprises a first straight groove body and a second straight groove body, the first straight groove body is communicated with the second straight groove body, and the first straight groove body and the second straight groove body form a certain angle.

6. The dual-power switching structure of a transformer area according to claim 2, wherein the action assembly comprises a first line (19) and a second line (20) connected with the two moving contacts (9), the first line (19) is electrically connected with an induction attraction module (17) fixed on the connecting frame (1);

and a power supply and an electromagnet are arranged in the induction attraction module (17).

7. The dual-power switching structure of a station area according to claim 6, wherein an iron block (18) is further fixed on the turntable (2), and the iron block (18) can drive the turntable (2) to rotate when the induction attraction module (17) is electrified.