CN216793551U

CN216793551U - Internal driving type vacuum switch pole device, vacuum switch and high-voltage vacuum switch

Info

Publication number: CN216793551U
Application number: CN202123025961.2U
Authority: CN
Inventors: 王政
Original assignee: Beijing Qiaosi Zhongyang Technology Co ltd
Current assignee: Beijing Qiaosi Zhongyang Technology Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-06-21
Anticipated expiration: 2031-12-02

Abstract

The utility model belongs to the technical field of vacuum switches, and particularly relates to an internal-driving type vacuum switch pole device, a vacuum switch and a high-voltage vacuum switch, which comprise a pole module and an electric control module, wherein the pole module comprises an insulating shell, a vacuum arc extinguish chamber, an operating mechanism, a first wire outlet end and a second wire outlet end, and the insulating shell is provided with a vacuum arc extinguish chamber cavity and an operating mechanism cavity; the vacuum arc extinguish chamber is arranged in the vacuum arc extinguish chamber cavity and comprises a shell, a static electrode and a moving electrode; the operating mechanism is arranged in the operating mechanism cavity, is connected with the electric control module and is connected with the moving electrode so as to drive the moving electrode to be jointed with or separated from the static electrode; the first wire outlet end is connected with the static electrode; the second wire outlet end is connected with the moving electrode; the actuator cavity is configured as a closed structure to isolate the actuator from the environment. The internal driving type vacuum switch pole device of the utility model seals the operating mechanism in the cavity of the operating mechanism to form a completely sealed pole module which is not influenced by the external environment.

Description

Internal driving type vacuum switch pole device, vacuum switch and high-voltage vacuum switch

Technical Field

The utility model belongs to the technical field of vacuum switches, and particularly relates to an internal drive type vacuum switch pole device, a vacuum switch and a high-voltage vacuum switch.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

In the field of vacuum switches, in order to prevent a vacuum arc extinguish chamber from being influenced by the outside and improve the operation reliability, a solid-sealed polar pole is developed, the support and the installation of the vacuum arc extinguish chamber are simplified, the external insulation of the vacuum arc extinguish chamber is strengthened, and the volume of the vacuum switch is reduced. However, the existing embedded pole is not completely embedded, and the lower cavity of the open pole is still in contact with the external environment. Therefore, the external environment and electrostatic adsorption have adverse effects on the insulation level of the lower cavity of the pole and the corrugated pipe, and the application universality and reliability are affected. Moreover, the conventional vacuum switch is a mechanism-operated three-phase switch, the mechanical structure of the operating mechanism is complex, a plurality of movable components are provided, the characteristic requirements of the switch can be ensured only by using precise mechanical elements and specialized debugging, and after the vacuum switch is put into use, the vacuum switch also needs to be periodically overhauled to ensure the stability of the performance of the switch.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to solve at least one of the above-mentioned technical problems in the prior art. The purpose is realized by the following technical scheme:

the utility model provides an internal drive type vacuum switch pole device in a first aspect, which comprises a pole module and an electric control module, wherein the pole module comprises:

the insulating shell is provided with a vacuum arc extinguishing chamber cavity and an operating mechanism cavity;

the vacuum arc extinguish chamber is arranged in the vacuum arc extinguish chamber cavity and comprises a shell, a static electrode and a moving electrode;

the operating mechanism is arranged in the operating mechanism cavity, is connected with the electric control module and is connected with the moving electrode so as to drive the moving electrode to be connected with or separated from the static electrode;

the first wire outlet end is connected with the static electrode;

the second wire outlet end is connected with the moving electrode;

wherein the actuator cavity is configured as a closed structure to isolate the actuator from the environment.

According to the internal drive type vacuum switch pole device provided by the embodiment of the utility model, the completely sealed pole module is adopted to seal the operating mechanism in the operating mechanism cavity to form a complete pole module which is not influenced by the external environment, so that the problem of related faults caused by the fact that the vacuum arc extinguish chamber is externally insulated and the corrugated pipe and the operating mechanism are easily influenced by the environment under the high-humidity, high-salt-mist, high-altitude and high-pollution environments is solved, and the problem of short service life of the vacuum arc extinguish chamber caused by the fact that the corrugated pipe is damaged under pressure in the high-pressure gas-filled cabinet is also solved, thereby meeting the requirements of various working conditions. Compared with the existing vacuum switch, the vacuum switch has the advantages of higher modularization degree, wider application range, higher reliability and smaller volume.

In some embodiments of the present invention, the actuator includes a diaphragm spring including a disc spring portion and a separating finger portion.

The diaphragm spring has nonlinear positive and negative load characteristics, namely, the diaphragm spring can apply maximum contact pressure which is not influenced by contact abrasion to the electrode contact in a closing state, and can also provide stable state maintenance for the electrode contact in an opening state. Because the number of parts of the mechanism is reduced to the minimum, and all moving elements are coaxially connected in series and linearly move, the abrasion of the moving elements is minimum, the failure rate is minimum, and the response speed, the precision and the reliability of the vacuum switch are improved.

In some embodiments of the present invention, the operating mechanism further includes a closing excitation coil panel, an opening excitation coil panel, a driving panel, and a driving panel, the driving panel is disposed between the closing excitation coil panel and the opening excitation coil panel, the driving panel is connected to the driving panel, and the driving panel is connected to the separating finger portion of the diaphragm spring.

In some embodiments of the present invention, the vacuum interrupter further includes a tower bellows, a first end of the tower bellows is connected to the housing of the vacuum interrupter, a second end of the tower bellows is connected to the moving electrode, and the tower bellows is configured in a tower structure that tapers from the first end to the second end.

In some embodiments of the present invention, the static electrode includes a static contact and a static conductive rod connected to each other, and the first outlet terminal is connected to the static conductive rod; the moving electrode comprises a moving contact and a moving conducting rod which are connected with each other, and the second wire outlet end is connected with the moving conducting rod.

In some embodiments of the present invention, the pole module further includes an insulating connecting rod disposed in the operating mechanism cavity, one end of the insulating connecting rod is connected to the moving electrode, and the other end of the insulating connecting rod is connected to the diaphragm spring.

In some embodiments of the present invention, the operating mechanism further includes a driving shaft, one end of the driving shaft is connected to the disc spring portion of the diaphragm spring, and the other end of the driving shaft is connected to the insulating link.

The utility model provides a vacuum switch in a second aspect, which comprises the internal drive type vacuum switch pole device in any one technical scheme.

A third aspect of the utility model proposes a high-voltage vacuum switch comprising the above-mentioned internal-drive-type vacuum switch pole arrangement, wherein the internal-drive-type vacuum switch pole arrangement comprises a plurality of pole modules connected in series with each other.

In some embodiments of the utility model, the internal drive type vacuum switch pole arrangement comprises a shorting bar to which a first outlet end of one pole module is connected, to which a second outlet end of another pole module connected in series adjacent the one pole module is connected, the first and second outlet ends being adjacent to each other.

The vacuum switch and the high-voltage vacuum switch according to the embodiment of the utility model have the same advantages as the internal drive type vacuum switch pole device, and are not described in detail herein.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural diagram of an internal drive type vacuum switch pole device in a closing state according to an embodiment of the present invention;

fig. 2 is a schematic structural view of the internal-drive type vacuum switch pole device according to the embodiment of the present invention in an open state;

fig. 3 is a schematic structural diagram of a high-voltage vacuum switch according to an embodiment of the utility model.

The reference symbols in the drawings denote the following:

1. an insulating housing; 2. a vacuum arc-extinguishing chamber; 3. an operating mechanism; 4. a first outlet terminal; 5. a second outlet terminal; 6. an insulating link; 7. a short-circuit row; 8. a static electrode outlet terminal; 9. a moving electrode wire outlet end; 10. a pole bottom plate; 20. a moving contact; 21. static contact; 22. a tower bellows; 23. a movable conductive rod; 24. a static conductive rod; 30. a separation finger portion; 31. a disc spring portion; 32. a brake-separating exciting coil panel; 33. closing an excitation coil panel; 34. a drive shaft; 35. a drive shaft; 36. a drive plate; 37. a structural frame.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The internal driving type vacuum switch pole device according to one embodiment of the present invention includes a pole module and an electric control module, as shown in fig. 1 and 2, the pole module includes:

the insulation shell 1, the insulation shell 1 has vacuum arc-extinguishing chamber cavity and operating mechanism cavity;

the vacuum arc extinguish chamber 2 is arranged in the vacuum arc extinguish chamber cavity and comprises a shell, a static electrode and a moving electrode;

the operating mechanism 3 is arranged in the operating mechanism cavity, and the operating mechanism 3 is connected with the electric control module and is connected with the moving electrode so as to drive the moving electrode to be connected with or separated from the static electrode;

a first outlet terminal 4, wherein the first outlet terminal 4 is connected with the static electrode;

the second wire outlet end 5, the second wire outlet end 5 is connected with the moving electrode;

wherein the actuator chamber is configured as a closed structure to isolate the actuator 3 from the outside.

The insulating housing 1 may be made of epoxy resin or plastic material. The housing of the vacuum interrupter 2 can be made of a ceramic material or a glass material. In addition, the internal drive type vacuum switch pole device further comprises a pole base plate 10, so that a closed operating mechanism cavity is formed with the insulating shell 1. The operating mechanism and related components are arranged in the closed operating mechanism cavity, so that the whole internal drive type vacuum switch pole device including the operating mechanism can be prevented from being influenced by the external environment, and the requirements of various working conditions are met.

In some embodiments of the present invention, as shown in fig. 1 and 2, the moving electrode includes a moving contact 21 and a moving conductive rod 23 connected to each other, and the static electrode includes a static contact 20 and a static conductive rod 24 connected to each other. The static conductive rod 24 is connected to the first wire outlet 4 located above, and the dynamic conductive rod 23 is connected to the second wire outlet 5 located below, so that the first wire outlet 4, the static conductive rod 24, the static contact 20, the dynamic contact 21, the dynamic conductive rod 23, and the second wire outlet 5 form a primary conductive loop. The moving contact 21 can be connected with the moving conductive rod 23 by brazing, and the static contact can be connected with the static conductive rod by brazing.

In some embodiments of the present invention, as shown in fig. 1 and 2, the actuator 3 includes a diaphragm spring including a disc spring portion 31 and a separating finger portion 30. The diaphragm spring has positive and negative load characteristics, and along with the forced movement of the small-end separation finger part 30, the large-end disc spring part 31 can be rapidly turned over in a positive cone state and a negative cone state, so that the opening and closing operation is realized. The separation finger part is used for driving the disc spring part to deform, and due to the specific lever action of the diaphragm spring, the driving force of the operating mechanism can be reduced, and the requirement on energy storage of a power supply loop is lowered.

In some embodiments of the present invention, as shown in fig. 1 and 2, the operating mechanism 3 further includes a switching-off excitation coil panel 32, a switching-on excitation coil panel 33, a driving panel 36 and a driving panel 35, the driving panel 36 is disposed between the switching-off excitation coil panel 32 and the switching-on excitation coil panel 33, the driving panel 35 is connected to the driving panel 36, and the driving panel 35 is connected to the finger separating portion 30 of the diaphragm spring. The opening excitation coil panel 32 and the closing excitation coil panel 33 can be formed by epoxy casting of an excitation coil and a support plate made of a magnetic conductive metal material, and the opening excitation coil panel 32 and the closing excitation coil panel 33 are respectively connected with the electronic control module. The electric control module can supply current to the opening excitation coil panel 32 or the closing excitation coil panel 33, so that the opening excitation coil panel 32 or the closing excitation coil panel 33 generates a repulsive force effect on the driving disc, the separation finger part 30 of the diaphragm spring is driven by the driving disc 36 to move and drive the disc spring part 31 to deform, so that the moving contact 23 is driven to move, and when the disc spring part 31 deforms to a balance point, the diaphragm spring is rapidly overturned to realize opening and closing operations.

In some embodiments of the present invention, as shown in fig. 1 and 2, the vacuum interrupter 2 further includes a tower-shaped bellows 22, a first end (a lower end shown in fig. 1 and 2) of the tower-shaped bellows 22 is connected to the housing of the vacuum interrupter 2, a second end (an upper end shown in fig. 1 and 2) is connected to the movable conductive rod 23 of the movable electrode, and the tower-shaped bellows 22 is configured in a tower-shaped structure that is tapered from the first end (the lower end) to the second end (the upper end). The tower-shaped corrugated pipe 22 and the shell of the vacuum arc-extinguishing chamber 2 and the movable conducting rod 23 can be connected by brazing.

The tower-shaped corrugated pipe can better meet the requirement of a quick switch on high opening and closing speed and the service life requirement of a vacuum switch pole device in the aspect of application of the quick switch.

In some embodiments of the present invention, as shown in fig. 1 and 2, the internal drive type vacuum switch pole device further includes an insulating link 6 disposed in the cavity of the operating mechanism, one end (upper end) of the insulating link 6 is connected to the movable conductive rod 23 of the movable electrode, and the other end (lower end) is connected to the diaphragm spring. Specifically, the insulating connecting rod 6 may be screwed with the movable conductive rod 23.

In some embodiments of the present invention, as shown in fig. 1 and 2, the actuator 3 further includes a driving shaft 34, and one end (lower end) of the driving shaft 34 is connected to the disc spring portion 31 of the diaphragm spring, and specifically, the driving shaft 34 may be embedded in the disc spring portion 31 connected to the diaphragm spring. The other end (upper end) is connected with an insulating connecting rod 6. Specifically, the insulating link 6 may be threadedly coupled to the drive shaft 34.

In some embodiments of the present invention, as shown in fig. 1 and 2, the operating mechanism 3 further includes a mechanism frame 37, and the mechanism frame 37 may be fixedly connected to the insulating housing 1. Accordingly, the opening and closing excitation coil disks 32 and 33 are connected to the mechanism frame 37 so as to be kept stationary during opening and closing. The electronic control module may include a switching-off capacitor electrically connected to the switching-off excitation coil disk 32 and a switching-on capacitor electrically connected to the switching-on excitation coil disk 33. The electric control module and the pole module can be integrated into a whole and can also be arranged separately.

As shown in fig. 1, in the internal drive type vacuum switch pole device according to an embodiment of the present invention, in a closing state, the movable contact 21 of the vacuum interrupter 2 is maintained at a closing position of a positive load due to the diaphragm spring in a positive conical state. When the opening operation is performed, the opening capacitor applies a pulse current to the opening excitation coil disk 32, the driving disk 36 receives the repulsive force of the electromagnetic force of the opening excitation coil disk 32 to rapidly drive the separating finger portion 30 of the diaphragm spring to move downward (toward the direction away from the opening excitation coil disk 32), so that the disc spring portion 31 of the diaphragm spring is deformed accordingly, and the moving conductive rod 23 and the moving contact 21 are driven to move downward (toward the direction away from the fixed contact 20), when the diaphragm spring is turned to the opening position in the reverse taper state, the moving contact 21 stops moving, and at this time, the load characteristic of the diaphragm spring keeps the moving contact at a stable opening position, as shown in fig. 2.

As shown in fig. 2, in the internal drive type vacuum switch pole device according to one embodiment of the present invention, in the open state, the movable contact 21 of the vacuum interrupter 2 is maintained in the negative open position due to the diaphragm spring in the reverse cone state. When a closing operation is performed, a pulse current is applied to the closing excitation coil disc 33 by the closing capacitor, the driving disc 36 receives the repulsive force of the electromagnetic force of the closing excitation coil disc 33 to rapidly drive the separation finger portion 30 of the diaphragm spring to move upward (toward the direction away from the closing excitation coil disc 33), so that the diaphragm spring portion 31 of the diaphragm spring is deformed, and the moving conductive rod 23 and the moving contact 21 are driven to move upward (toward the direction close to the static contact 20), when the moving contact 21 contacts the static contact 20, the moving contact 21 is forced to stop moving, and at this time, the diaphragm spring does not reach the termination position of the positive load, so that pressure is continuously applied to the moving contact 21 until the stable closing position in the positive cone state is reached, as shown in fig. 1.

In some embodiments of the utility model, the electric control module comprises a capacitance submodule and a control submodule, the capacitance submodule provides energy for the operating mechanism, the control submodule has a real-time monitoring function and provides an electric interface for the switch, fault time of the switch can be accurately acquired, opening time can be accurately regulated and set according to a line or use requirements, and three-phase and multi-fracture switches can be kept synchronous, so that requirements on characteristics of diversified products are met.

Another embodiment of the utility model provides a vacuum switch, which comprises the internal drive type vacuum switch pole device in any one of the embodiments. In particular, the vacuum switch may be a three-phase vacuum switch, comprising three pole modules and one electronic control module.

In addition, as shown in fig. 3, the utility model further provides a high-voltage vacuum switch applied to a multi-fracture working condition, which comprises a plurality of pole modules connected in series. The basic construction of each pole module is substantially the same as the pole module of the internal drive type vacuum switch pole arrangement described above, but there is no insulating connecting rod within the pole module. Correspondingly, the second outlet/lower outlet (the outlet connected to the moving electrode) of the pole module is equipotentially and directly connected to the operating mechanism 3 in the pole module.

As shown in fig. 3, in the multi-fracture application condition, two or more pole modules are connected in series end to end, and for two pole modules connected in series adjacent to each other, the lower outlet terminal of the upper pole module (the second outlet terminal connected to the moving electrode of the pole module) and the upper outlet terminal of the lower pole module (the first outlet terminal connected to the static electrode of the pole module) are respectively connected to the short-circuit bar 7, so as to form a pole module with a higher voltage level, where the pole module includes a static electrode outlet terminal 8 and a moving electrode outlet terminal 9.

Because there is not insulating connecting rod in each utmost point post module, vacuum interrupter can be connected with operating mechanism equipotential for utmost point post module can further shorten, with the requirement of satisfying the diversification. In addition, the electric control module can adopt self-contained power supply, and the photoelectric switch controls the excitation of the operating mechanism 3 to complete the opening and closing operation.

It should be noted that fig. 3 shows an embodiment applied to a dual-break high-voltage vacuum switch, which includes three pole module sets and one electric control module, and each pole module set includes two pole modules connected in series as shown in fig. 3. However, the internal drive type vacuum switch pole device of the utility model can also be applied to a multi-fracture high-voltage vacuum switch, and specifically, the internal drive type vacuum switch pole device can comprise three pole module groups and one electric control module, wherein each pole module group comprises a plurality of (more than two) pole modules which are connected in series.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides an interior drive type vacuum switch utmost point post device, includes utmost point post module and automatically controlled module, its characterized in that, utmost point post module includes:

the first wire outlet end is connected with the static electrode;

the second wire outlet end is connected with the moving electrode;

2. The post apparatus of claim 1, wherein the actuator comprises a diaphragm spring including a disc spring portion and a separating finger portion.

3. The pole device of claim 2, wherein the actuator further comprises a closing excitation coil, a separating excitation coil, a driving disc and a driving shaft, the driving disc is disposed between the closing excitation coil and the separating excitation coil, the driving shaft is connected to the driving disc, and the driving shaft is connected to the separating finger of the diaphragm spring.

4. The post device of claim 1, wherein the vacuum interrupter further comprises a tower bellows, a first end of the tower bellows is connected to the housing of the vacuum interrupter, a second end of the tower bellows is connected to the moving electrode, and the tower bellows is configured to be a tower structure that tapers from the first end to the second end.

5. The pole device of the internal drive type vacuum switch according to claim 1, wherein the static electrode comprises a static contact and a static conductive rod connected to each other, and the first outlet terminal is connected to the static conductive rod; the moving electrode comprises a moving contact and a moving conducting rod which are connected with each other, and the second wire outlet end is connected with the moving conducting rod.

6. The post device of claim 2, wherein the post module further comprises an insulating link disposed in the actuator cavity, one end of the insulating link is connected to the moving electrode, and the other end of the insulating link is connected to the diaphragm spring.

7. The post device for the internal drive type vacuum switch according to claim 6, wherein the actuator further comprises a driving shaft, one end of the driving shaft is connected to the disc spring portion of the diaphragm spring, and the other end of the driving shaft is connected to the insulating link.

8. A vacuum switch comprising an internal drive type vacuum switch post assembly according to any one of claims 1 to 7.

9. A high voltage vacuum switch comprising an internal drive type vacuum switch pole arrangement according to any one of claims 1 to 5, wherein the internal drive type vacuum switch pole arrangement comprises a plurality of pole modules connected in series to each other.

10. The high-voltage vacuum switch according to claim 9, characterized in that the internal drive type vacuum switch pole arrangement comprises a shorting bar to which a first outlet end of one pole module is connected and to which a second outlet end of another pole module connected in series adjacent to the one pole module is connected, the first and second outlet ends being adjacent to each other.