CN219321240U - Miniature combined type vacuum arc-extinguishing on-load switch - Google Patents

Abstract

The utility model provides a miniaturized combined type vacuum arc-extinguishing on-load switch, and relates to the technical field of 10kv line voltage regulators. The utility model comprises a switch main body, wherein the switch main body comprises a first rack and a second rack which are arranged up and down, the first rack is arranged at the upper end of the second rack, the switch main body further comprises a mechanical transmission component, a conductive component and a transition contact component, the mechanical transmission component is arranged on the first rack, the conductive component and the transition contact component are both arranged on the second rack, the conductive component comprises a first conductive component, a second conductive component and a third conductive component which are identical in structure, and the transition contact component comprises a first transition contact component, a second transition contact component and a third transition contact component which are identical in structure. On the basis of ensuring the original electrical performance, the utility model reduces the switch volume, reduces the processing parts, reduces the materials and simplifies the processing technology.

Description

Miniature combined type vacuum arc-extinguishing on-load switch

Technical Field

The utility model relates to the technical field of 10kv line voltage regulators, in particular to a miniature composite vacuum arc-extinguishing on-load switch.

Background

The large volume of the PYF III 350D/10-9 type vacuum on-load switch makes the transformer body have large volume, large oil injection amount, high manufacturing cost and complex manufacturing process.

Disclosure of Invention

Aiming at the defects existing in the problems, the utility model provides a miniaturized composite vacuum arc-extinguishing on-load switch, so that the switch has the advantages of reduced volume, reduced workpieces, reduced materials and simplified processing technology on the basis of ensuring the original electrical performance.

In order to solve the problems, the utility model provides a miniaturized combined type vacuum arc-extinguishing on-load switch, which comprises a switch main body, wherein the switch main body comprises a first rack and a second rack which are arranged up and down, the first rack is arranged at the upper end of the second rack, the switch further comprises a mechanical transmission component, a conductive component and a transition contact component, the mechanical transmission component is arranged on the first rack, the conductive component and the transition contact component are arranged on the second rack, the conductive component comprises a first conductive component, a second conductive component and a third conductive component which are identical in structure, and the transition contact component comprises a first transition contact component, a second transition contact component and a third transition contact component which are identical in structure.

Preferably, the mechanical transmission assembly comprises a motor, a worm wheel, a driven wheel, a spring deflector rod, a spring gear, a lock wheel shaft, a lock wheel shifting fork, a lock wheel disc, an upper shaft head and a triangular rod, wherein the motor drives the worm wheel to rotate through the worm, the worm wheel drives the spring gear through the driven wheel, the spring gear sequentially drives the lock wheel shaft and the lock wheel shifting fork to rotate through the spring deflector rod, the lock wheel disc and the upper shaft head are connected together through the triangular rod, and the lock wheel shifting fork drives the lock wheel disc and the upper shaft head to rotate.

Preferably, the conductive component comprises a first shell, a conductive fixed contact, a conductive moving contact, a transition contact and a vacuum arc-extinguishing tube are arranged on the first shell, the conductive fixed contact is uniformly distributed on the shell, the conductive fixed contact is connected with the conductive moving contact, the side end of the conductive moving contact is provided with the transition contact, the vacuum arc-extinguishing tube comprises a first vacuum arc-extinguishing tube and a second vacuum arc-extinguishing tube, the first vacuum arc-extinguishing tube is positioned on the left side of the conductive moving contact, and the second vacuum arc-extinguishing tube is positioned on the right side of the conductive moving contact.

Preferably, the transition contact assembly comprises a second shell, a slip ring fixed contact, a slip ring moving contact, a roller control frame and an insulating shaft fixing strip are arranged on the second shell, the slip ring fixed contact is arranged at the upper end of the second shell, the slip ring is arranged at the end part of the second shell, the slip ring moving contact is arranged on the slip ring, and the roller control frame and the insulating shaft fixing strip are both positioned at the center of the second shell.

Preferably, the insulating shaft fixing strip comprises a first insulating shaft fixing strip and a second insulating shaft fixing strip, the first insulating shaft fixing strip is arranged on the left side of the roller control frame, and the second insulating shaft fixing strip is arranged on the right side of the roller control frame.

Compared with the prior art, the utility model has the following advantages:

1. on the basis of ensuring the original electrical performance, the utility model reduces the switch volume, reduces the processing parts, reduces the materials and simplifies the processing technology.

2. The utility model reduces the manufacturing cost of the whole switch, optimizes the assembly process and improves the production efficiency.

3. The cost of the product of the utility model is reduced, and the product has more market competitiveness.

4. After the volume of the utility model is reduced, the volume of the corresponding transformer can be reduced, the oiling amount is reduced, and the overall cost of the transformer is also reduced.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic view of a portion of the structure of an embodiment of the present utility model;

FIG. 3 is a schematic view of a mechanical transmission assembly according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a conductive and transition contact assembly according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a conductive and transition contact assembly according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a switching sequence of a switch according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of the circuit principle of an embodiment of the present utility model;

fig. 8 is a schematic diagram showing the time meaning of the photographed dc waveform, in which the operation program of the switching section is measured by oscillography according to the embodiment of the present utility model.

Detailed Description

The present utility model will be further described in detail with reference to the drawings and examples, which are not intended to limit the utility model, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

The embodiment provides a combined type vacuum arc extinction on-load voltage regulating switch, makes the volume of current V type vacuum switch (i.e. combined type switch) reduce 40%, and its simple structure is convenient for process, and mechanical structure is reliable, and the operation is stable, and the novel second grade quick drive mechanism switching process of loading is accurate smooth-going, and small-size switch volume reduces, and its corresponding transformer volume also reduces the manufacturing cost of transformer.

As shown in fig. 1 to 7, the embodiment of the utility model comprises a mechanical transmission assembly 1 and a conductive and transitional contact assembly 2, wherein the mechanical transmission mechanism 1 comprises a motor 1-1, a worm 1-2, a worm wheel 1-3, a worm wheel 1-4, a driven wheel 1-5, a spring driving lever 1-6, a spring gear 1-7, a lock wheel shaft 1-8, a lock wheel shifting fork 1-9, an upper shaft head 1-10 and a triangular lever 1-11.

In the embodiment, the conductive and transitional contact assembly 2 comprises a conductive fixed contact 2-1, a conductive movable contact 2-2, a transitional contact 2-3, a vacuum arc extinguishing tube 2-4, a slip ring fixed contact 2-5, a slip ring 2-6, a slip ring movable contact 2-7, a roller control frame 2-8 and an insulating shaft fixing strip 2-9.

The mechanical structure principle of the utility model is as follows: under the drive of a motor 1-1, a worm 1-2 drives a worm wheel 1-3 to rotate, so that a driven wheel 1-4 drives a spring gear 1-6, a spring deflector rod 1-5 drives a lock wheel shaft 1-7 to rotate after a spring is released, a lock wheel shifting fork 1-8 is driven, a lock wheel disc 1-9 and an upper shaft head 1-10 are connected together through a triangular rod 1-11, and the lock wheel shifting fork 1-8 drives the lock wheel disc 1-9 and the upper shaft head 1-10 to rotate, wherein ten positions are distributed evenly.

The electrical principle of this embodiment is: the vacuum on-load tap-changer adopts the principle of single-resistance transition and can switch the tap of the voltage-regulating coil of the transformer with load. When the number of turns of the voltage regulating coil is reduced, the transition contact 2-3 is firstly connected, the vacuum tube 2-4 connected in series with the transition resistor is connected, a circulation is formed between the voltage of the tapping N and the tapping N-1 through the resistor, then the vacuum tube 2-4 is disconnected, the conductive contact 2-2 is disconnected from the tapping N and connected to the tapping N-1, the vacuum tube 2-4 is disconnected, and the transition contact 2-3 is disconnected, so that the action from the tapping N to the tapping N-1 is completed. This is also the case when the voltage regulation coil increases the number of turns.

The operation program of the change-over switch part is measured by oscillography, and the time meaning of the photographed direct current waveform is as shown in fig. 8:

sequential testing of up and down symmetry, wherein

K main conductive contact

K1 Main vacuum tube

K2 Vacuum tube

K11 Main transition switching contact

K22 Auxiliary transition switching contact

Control standard

t, the connection time of the main vacuum tube and the main transition contact is more than or equal to 12ms;

t 1-the time for the connection of the main vacuum tube and the diversion contact is more than or equal to 4ms;

t 2-the time for connecting the auxiliary vacuum tube and the auxiliary transition contact is more than or equal to 12ms;

t 3-the time for connecting the main vacuum tube and the auxiliary vacuum tube is more than or equal to 4ms;

the total time of the action is not more than 120ms.

All electric parts and the adaptive power supply are connected through wires by the person skilled in the art, and a proper controller is selected according to actual conditions so as to meet control requirements, specific connection and control sequence, and the electric connection is completed by referring to the following working principles, namely the sequential working sequence among the electric parts, and the detailed connection means is a well-known technology in the art.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

In the description of the present specification, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the technical solutions of the present patent and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present patent application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present patent application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this specification, unless clearly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in this specification will be understood by those of ordinary skill in the art in view of the specific circumstances.

In this specification, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (5)

1. The utility model provides a miniaturized combined type vacuum arc extinction on-load switch, includes the switch main part, the switch main part is including first frame and the second frame that sets up from top to bottom, first frame sets up the upper end of second frame, its characterized in that still includes mechanical transmission subassembly, conductive component and transition contact subassembly, mechanical transmission subassembly sets up in the first frame, conductive component with the transition contact subassembly all sets up in the second frame, and conductive component includes the first conductive component that the structure is the same, second conductive component and third conductive component, transition contact subassembly includes the first transition contact subassembly that the structure is the same, second transition contact subassembly and third transition contact subassembly.

2. The miniature combined type vacuum arc-extinguishing on-load switch according to claim 1, wherein the mechanical transmission assembly comprises a motor, a worm wheel, a driven wheel, a spring deflector rod, a spring gear, a lock wheel shaft, a lock wheel fork, a lock wheel disc, an upper shaft head and a triangular rod, the motor drives the worm wheel to rotate through the worm, the worm wheel drives the spring gear through the driven wheel, the spring gear drives the lock wheel shaft and the lock wheel fork to rotate in sequence through the spring deflector rod, the lock wheel disc and the upper shaft head are connected together through the triangular rod, and the lock wheel fork drives the lock wheel disc and the upper shaft head to rotate.

3. The miniaturized combined type vacuum arc-extinguishing on-load switch according to claim 2, wherein the conductive component comprises a first shell, a conductive fixed contact, a conductive moving contact, a transition contact and a vacuum arc-extinguishing tube are arranged on the first shell, the conductive fixed contact is uniformly distributed on the shell, the conductive fixed contact is connected with the conductive moving contact, the side end of the conductive moving contact is provided with the transition contact, the vacuum arc-extinguishing tube comprises a first vacuum arc-extinguishing tube and a second vacuum arc-extinguishing tube, the first vacuum arc-extinguishing tube is positioned on the left side of the conductive moving contact, and the second vacuum arc-extinguishing tube is positioned on the right side of the conductive moving contact.

4. A miniaturized combined vacuum arc suppressing on-load switch as recited in claim 3, wherein the transition contact assembly comprises a second housing, a slip ring fixed contact, a slip ring moving contact, a roller control frame and an insulating shaft fixing bar are arranged on the second housing, the slip ring fixed contact is arranged at the upper end of the second housing, the slip ring is arranged at the end of the second housing, the slip ring moving contact is arranged on the slip ring, and the roller control frame and the insulating shaft fixing bar are both positioned at the center of the second housing.

5. The miniaturized hybrid vacuum arc-suppressing on-load switch of claim 4, wherein the insulating shaft fixing strip comprises a first insulating shaft fixing strip and a second insulating shaft fixing strip, the first insulating shaft fixing strip is disposed on the left side of the roller control frame, and the second insulating shaft fixing strip is disposed on the right side of the roller control frame.

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