Spring operating mechanism for high-voltage switchgear and high-voltage switchgear

Abstract

The utility model relates to a spring operating mechanism for a high-voltage switchgear and the high-voltage switchgear. The spring operating mechanism is configured to be capable of operating the moving contact to realize opening or closing action, and comprises a box body which is provided with a plurality of box walls and an internal space, and the box walls comprise a box door; the spring energy storage device is contained in the inner space of the box body, the spring energy storage device comprises a motor, a gear set and a spring component, the gear set is connected with the motor, the spring component is connected to the gear set, driving force from the gear set is stored as elastic potential energy of the spring component, and the spring component is configured to release or store the elastic potential energy; the operating mechanism is used for operating the moving contact to realize opening or closing action; and the protection plate is installed on the spring energy storage device, and at least one part of the protection plate is located between the box door and the gear set so as to at least partially cover the side, facing the box door, of the gear set. The spring operating mechanism utilizes the protection plate to protect the personal safety of an operator.

Description

Technical Field

[0001] This application relates to the field of switchgear for electrical systems. Specifically, this application relates to spring operating mechanisms for high-voltage switchgear and high-voltage switchgear itself. Background Technology

[0002] Spring operating mechanisms used in high-voltage switchgear may fail during operation, and such failures can cause serious personal injury.

[0003] Existing housings for spring-operated mechanisms in high-voltage switchgear cannot protect the mechanical structure from all directions. Particularly when the enclosure door is open, the gear sets and spring components are exposed to the operator, posing a safety hazard. The risk of failure of these components can only be mitigated by closing the enclosure door. Furthermore, the psychological pressure on operators during operation hinders their ability to objectively assess problems with the high-voltage switchgear. Utility Model Content

[0004] The present invention aims to provide a spring operating mechanism and a high-voltage switchgear that can protect the personal safety of operators.

[0005] According to one aspect of the embodiments of this application, a spring operating mechanism for a high-voltage switchgear is provided. The high-voltage switchgear includes a moving contact and a stationary contact for opening and closing the circuit. The spring operating mechanism is configured to operate the moving contact to disconnect or connect with the stationary contact to achieve the opening or closing action. The spring operating mechanism includes: a housing having multiple housing walls and an internal space enclosed by the multiple housing walls, the multiple housing walls including a door that can be opened and closed; and a spring energy storage device housed in the internal space of the housing, the spring energy storage device including a motor, a gear set, and a spring component, the gear set being connected to... The motor is connected to receive driving force from the motor, the spring component is connected to the gear set to receive driving force from the gear set, thereby enabling the driving force from the gear set to be stored as elastic potential energy of the spring component, the spring component being configured to release or store elastic potential energy for operating the moving contact to perform opening or closing actions; and a protective plate is housed in the internal space of the housing, the protective plate being mounted on the spring energy storage device, at least a portion of the protective plate being located between the housing door and the gear set to at least partially cover the side of the gear set facing the housing door.

[0006] In this way, the protective plate can protect the operator from accidental mechanical injury to the gear set during operation and maintenance, improve the overall safety of the spring operating mechanism, and ensure the personal safety of the operator during operation and maintenance.

[0007] According to an exemplary embodiment of this application, the protective plate also at least partially covers the side of the motor facing the door, and at least partially covers the side of the spring component facing the door.

[0008] In this way, the protective plate can protect the operator from accidental injury to the motor and spring components during operation and maintenance, further improving the overall safety of the spring operating mechanism and ensuring the personal safety of the operator during operation and maintenance.

[0009] According to an exemplary embodiment of this application, the plurality of enclosure walls include a top wall and a bottom wall facing each other, and four peripheral walls located between the top wall and the bottom wall. The four peripheral walls include a first peripheral wall serving as the enclosure door, a second peripheral wall facing the enclosure door, and a third and fourth peripheral wall facing each other. The protective plate includes a main plate and a sub-plate connected to the main plate. The main plate and the sub-plate intersect each other perpendicularly. The main plate is used to at least partially cover the side of the spring energy storage device facing the enclosure door, and the sub-plate is used to at least partially cover the side of the spring energy storage device facing the third peripheral wall.

[0010] In this way, the protective plate, including the main plate and the sub-plate, covers both sides of the spring energy storage device, which further improves the overall safety of the spring operating mechanism and ensures the personal safety of the operator during operation and maintenance.

[0011] According to an exemplary embodiment of this application, the high-voltage switchgear further includes a manual opening and closing device for manually opening or closing the high-voltage switchgear using a manual tool. The main board has a first opening, the position of which is opposite to the position of the manual opening and closing device, and the size of the first opening is designed to allow the manual tool to be inserted for manual opening or closing.

[0012] In this way, the first opening allows for convenient manual opening or closing operations using hand tools in emergency situations, ensuring the reliability and safety of the high-voltage switchgear. At the same time, the other physical areas of the protective plate protect the personal safety of operators during operation and maintenance.

[0013] According to an exemplary embodiment of this application, the motherboard is provided with a cover plate for covering the first opening. The cover plate is rotatably mounted by means of a pivot on the motherboard located above the first opening, so that the cover plate can rotate about the pivot between a first position and a second position, in the first position the cover plate covers the first opening, and in the second position the cover plate exposes the first opening.

[0014] In this way, the rotating design of the cover provides a simple and effective means of sealing the first opening without the use of hand tools, preventing dust and foreign objects from entering, while protecting the operator from accidental contact with internal components.

[0015] According to an exemplary embodiment of this application, the high-voltage switchgear further includes a cable wiring area, wherein the main board also has a second opening, the second opening being positioned opposite the cable wiring area, for the operator to observe and maintain multiple cables and multiple terminals in the cable wiring area.

[0016] In this way, the second opening facilitates the operator's observation and maintenance of the cable connection area, improves the maintainability of the high-voltage switchgear, and reduces maintenance time and costs; at the same time, the other solid areas of the protective plate protect the operator's personal safety during operation and maintenance.

[0017] According to an exemplary embodiment of this application, a portion of the side edge of the main board opposite to the sub-board is recessed to form a first notch, the first notch corresponding to a portion of the gear set for maintenance of the gear set.

[0018] In this way, the design of the first notch facilitates the operator's inspection of the gear set; at the same time, the other solid areas of the protective plate protect the operator's personal safety during operation and maintenance.

[0019] According to an exemplary embodiment of this application, the lower end of the side edge of the main board opposite to the sub-board is recessed to form a second notch, the second notch corresponding to a portion of the spring component for maintenance of the spring component; and wherein a portion of the lower edge of the main board is recessed to form a third notch, the third notch being used to avoid the heater of the high-voltage switchgear.

[0020] In this way, the setting of the second and third notches allows for direct access to the spring components and heaters, improving equipment maintenance efficiency, while utilizing other solid areas of the protective plate to protect the operator's personal safety during operation and maintenance.

[0021] According to an exemplary embodiment of this application, the motherboard has at least two through holes in the middle region to mount the protective plate onto the spring energy storage device by means of at least two threaded members passing through the at least two through holes.

[0022] In this way, the through-hole design simplifies the installation process of the protective plate, ensures the convenience of assembling and maintaining the spring operating mechanism, and also enhances the overall stability of the spring operating mechanism.

[0023] According to another aspect of this application, a high-voltage switchgear is provided, the high-voltage switchgear including three sets of moving contacts and stationary contacts for realizing three-phase opening and closing, the high-voltage switchgear further including three spring operating mechanisms for the high-voltage switchgear according to any of the above embodiments, for controlling the opening and closing of the high-voltage switchgear.

[0024] In summary, the spring operating mechanism and high-voltage switchgear of this application achieve superior technical effects compared to the prior art. In particular, the protective plate of this application can protect the operator from accidental personal injury caused by the spring components, gear sets and motors of the spring energy storage device in the event of a malfunction during operation and maintenance, thereby improving the overall safety of the spring operating mechanism, ensuring the personal safety of the operator, and reducing the psychological pressure faced by the operator. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 This is a schematic front view of a high-voltage switchgear according to an exemplary embodiment of this application;

[0027] Figure 2 This is a schematic top view of a high-voltage switchgear according to an exemplary embodiment of this application;

[0028] Figure 3 This is a schematic front view of a spring operating mechanism for a high-voltage switchgear according to an exemplary embodiment of this application;

[0029] Figure 4 This is a schematic rear view of a spring operating mechanism for a high-voltage switchgear according to an exemplary embodiment of this application, wherein the protective plate is shown in dashed lines;

[0030] Figure 5 This is a schematic rear view of a spring-operated mechanism for a high-voltage switchgear according to an exemplary embodiment of this application, wherein the cabinet door and protective panel have been removed;

[0031] Figure 6 This is a schematic side view of a spring operating mechanism for a high-voltage switchgear according to an exemplary embodiment of this application;

[0032] Figure 7 This is a schematic front view of a protective plate for a spring-operated mechanism of a high-voltage switchgear according to an exemplary embodiment of this application; and

[0033] Figure 8 This is a schematic perspective view of a protective plate for a spring operating mechanism of a high-voltage switchgear according to an exemplary embodiment of this application.

[0034] The reference numerals in the attached figures are as follows:

[0035] 1. Moving contact

[0036] 2. Stationary contact

[0037] 3. Spring operating mechanism

[0038] 4. Central control box

[0039] 10. Box body

[0040] 11. Top wall

[0041] 12. Bottom wall

[0042] 13. Box door

[0043] 14. Second perimeter

[0044] 15. Third perimeter wall

[0045] 16. Fourth perimeter wall

[0046] 17. Spring Inspection Window

[0047] 18. Position indicator

[0048] 19. Handle

[0049] 20. Spring energy storage device

[0050] 21. Shell

[0051] 22. Spring components

[0052] 221. First Spring

[0053] 222. The second spring

[0054] 23. Electric motor

[0055] 24. Gear set

[0056] 25. Threaded hole

[0057] 30. Protective board

[0058] 31. Motherboard

[0059] 32. Vice board

[0060] 33. First orifice

[0061] 34. Second orifice

[0062] 35. First Gap

[0063] 36. Second Gap

[0064] 37. The Third Gap

[0065] 38. Pivot components

[0066] 39. Through hole Detailed Implementation

[0067] To enable those skilled in the art to better understand the solutions of this application, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application. The nouns and pronouns referring to people in this patent application are not limited to specific genders. It is hereby noted that the directional terms such as "up" and "down" used herein are relative to the direction of the high-voltage switchgear in its normal operating position, that is... Figure 1 The work location is shown in the image.

[0068] First, refer to Figure 1 and Figure 2 The figures show a schematic front view and a schematic top view of a high-voltage switchgear according to an exemplary embodiment of this application. The high-voltage switchgear of this application includes three sets of moving contacts 1 and stationary contacts 2 for realizing three-phase opening and closing. The high-voltage switchgear also includes three spring operating mechanisms 3, each of which operates one moving contact 1 to control the opening and closing of the high-voltage switchgear. Figure 1 The specification also shows a central control box 4, which controls the overall operation of the high-voltage switchgear. To avoid obscuring the subject matter of this application, only the components of the high-voltage switchgear relevant to the subject matter of this application are described in detail, while other components known in the art are not described in detail.

[0069] Reference Figure 3 and Figure 4 This document shows a schematic front view and a schematic rear view of a spring operating mechanism for a high-voltage switchgear according to an exemplary embodiment of this application. The spring operating mechanism 3 mainly includes a housing 10 and a spring energy storage device 20. Figure 5 (as shown in the image) and protective plate 30 ( Figure 4 (shown in dashed lines), etc. The main components of the spring operating mechanism 3 will be described in detail below with reference to the accompanying drawings.

[0070] Reference Figure 3 and Figure 4The housing 10 has multiple housing walls and an internal space enclosed by the multiple housing walls. The multiple housing walls include a top wall 11 and a bottom wall 12 that are opposite each other, and four peripheral walls located between the top wall 11 and the bottom wall 12. The four peripheral walls include a first peripheral wall that faces each other. Figure 4 As shown, the first peripheral wall is formed as a door 13 and the second peripheral wall 14. Figure 3 (as shown in the diagram) and the third and fourth peripheral walls 15 and 16 facing each other, the door 13 is configured to be openable when the spring energy storage device 20 is being inspected.

[0071] exist Figure 3 The image shows some details of the second perimeter wall 14, which mainly includes two spring inspection windows 17 and a position indicator 18. (See reference...) Figure 4 and Figure 5 , Figure 4 The image shows the door 13, and the protective panel 30 is shown in dashed lines. It is understood that the protective panel 30 is housed within the interior space of the enclosure 10, and therefore is not visible when the door 13 is closed.

[0072] Reference Figure 5 The diagram shows a schematic rear view of a spring-operated mechanism for high-voltage switchgear, with the enclosure door 13 and protective plate 30 removed, thus clearly showing the construction of the main components of the spring energy storage device 20. The spring energy storage device 20 is housed within the internal space of the enclosure 10 and mainly includes a spring component 22, a motor 23, a gear set 24, and a housing 21. The spring component 22 may include a first spring 221 and a second spring 222, which are capable of extending and retracting to release or store elastic potential energy for operating the moving contact 1 to perform opening or closing actions. It is understood that the specific arrangement and operation of the first spring 221 and the second spring 222 are implementable by those skilled in the art as needed. The gear set 24 is connected to the motor 23 to receive the driving force from the motor 23. The spring component 22 is connected to the gear set 24 to receive the driving force from the gear set 24, thereby enabling the driving force from the gear set 24 to be stored as the elastic potential energy of the spring component 22.

[0073] Reference Figure 6 A schematic side view of the spring operating mechanism 3 for high-voltage switchgear is shown, from... Figure 6 It can be seen that the door 13 is equipped with a handle 19.

[0074] The following reference Figure 4 , Figure 7 and Figure 8The specific structure of the protective plate 30 is described in detail below. The protective plate 30 can be installed on the spring energy storage device 20, particularly on the housing 21 of the spring energy storage device 20. The protective plate 30 can be located between at least one of the multiple housing walls of the housing 10 and the spring energy storage device 20. The protective plate 30 can be made of steel or a robust polymer material; for example, Q235-A steel or polyester carbonate polymer. The thickness of the protective plate 30 can be, for example, in the range of 2 mm to 4 mm, preferably 3 mm.

[0075] Specifically, refer to Figure 8 The protective plate 30 includes a main plate 31 and a sub-plate 32 connected to the main plate 31. The main plate 31 and the sub-plate 32 intersect each other perpendicularly. The main plate 31 is used to at least partially cover the side of the spring energy storage device 20 facing the door 13, and the sub-plate 32 is used to at least partially cover the side of the spring energy storage device 20 facing the third peripheral wall 15.

[0076] The protective plate 30 can be used to cover a portion of the outer surface of the spring component 22, at least a portion of the outer surface of the gear set 24, and at least a portion of the outer surface of the motor 23. Therefore, the protective plate 30 of this application can protect the operator from personal injury caused by accidental movement of components such as the spring component 22, gear set 24, and motor 23 in the event of a malfunction during operation and maintenance, improving the overall safety of the spring operating mechanism, ensuring the operator's personal safety, and reducing the psychological stress faced by the operator.

[0077] Reference Figure 7 and Figure 8 The high-voltage switchgear also includes a manual opening / closing device (not shown) for manually opening or closing the high-voltage switchgear using a hand tool. The main board 31 has a first opening 33, positioned opposite the manual opening / closing device, and sized to allow a hand tool to be inserted for manual opening or closing. The first opening 33 may be circular, for example, to facilitate the insertion of a hand tool.

[0078] The motherboard 31 may be provided with a cover plate for covering the first opening 33. The cover plate is rotatably mounted on the motherboard 31 via a pivot 38 located above the first opening 33, allowing the cover plate to rotate around the pivot 38 between a first position and a second position. In the first position, the cover plate covers the first opening 33, while in the second position, the cover plate exposes the first opening 33. The cover plate can be secured by screws or threaded sleeves, allowing it to rotate.

[0079] Reference Figure 7 and Figure 8The high-voltage switchgear also includes a cable connection area, and the main board 31 also has a second opening 34, which is located opposite to the cable connection area, to allow the operator to observe and maintain the multiple cables and terminals in the cable connection area. The shape of the second opening 34 may be, for example, rectangular.

[0080] Reference Figure 7 and Figure 8 A portion of the side edge of the main board 31 opposite to the sub-board 32 is recessed to form a first notch 35. The first notch 35 corresponds to a portion of the gear set 24 for maintenance of the gear set 24. The shape of the first notch 35 may be, for example, rectangular.

[0081] Reference Figure 7 and Figure 8 The lower end of the side edge of the main board 31 opposite to the sub-board 32 is recessed to form a second notch 36, which corresponds to a portion of the spring component 22 for maintenance of the spring component 22; and a portion of the lower edge of the main board 31 is recessed to form a third notch 37, which is used to avoid the heater of the high-voltage switchgear. The shapes of the second notch 36 and the third notch 37 can each be, for example, rectangular.

[0082] Reference Figure 7 and Figure 8 The mainboard 31 has at least two through holes 39 in the middle region to allow the protective plate 30 to be mounted onto the spring energy storage device 20, specifically onto the housing 21 of the spring energy storage device 20, using at least two threaded elements passing through the at least two through holes 39. The gear set 24 can be mounted onto the housing 21. Figure 5 As can be seen, the housing 21 has two threaded holes 25 corresponding to the through holes 39. In this embodiment, the two through holes 39 are basically arranged at two points along a diagonal direction of the main board 31. Of course, it is understood that the number and position of the through holes 39 can be adjusted as needed.

[0083] The spring operating mechanism of this application effectively avoids potential mechanical injury to the operator without affecting the operation of the high-voltage switchgear by setting a protective plate, thus protecting the operator's personal safety and reducing the psychological pressure faced by the operator.

[0084] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A spring operating mechanism for a high-voltage switchgear, the high-voltage switchgear comprising a moving contact (1) and a stationary contact (2) for opening and closing, the spring operating mechanism (3) being configured to operate the moving contact (1) to disconnect or connect with the stationary contact (2) to achieve the opening or closing action, characterized in that, The spring operating mechanism (3) includes: The box (10) has multiple box walls and an internal space enclosed by the multiple box walls, the multiple box walls including a box door (13) that can be opened and closed; A spring energy storage device (20) is housed within the internal space of the housing (10). The spring energy storage device (20) includes a motor (23), a gear set (24), and a spring component (22). The gear set (24) is connected to the motor (23) to receive driving force from the motor (23). The spring component (22) is connected to the gear set (24) to receive driving force from the gear set (24), thereby enabling the driving force from the gear set (24) to be stored as elastic potential energy of the spring component (22). The spring component (22) is configured to release or store elastic potential energy for operating the moving contact (1) to perform opening or closing actions. A protective plate (30) is housed in the interior space of the housing (10). The protective plate (30) is mounted on the spring energy storage device (20). At least a portion of the protective plate (30) is located between the housing door (13) and the gear set (24) to at least partially cover the side of the gear set (24) facing the housing door (13).

2. The spring operating mechanism for high-voltage switchgear according to claim 1, characterized in that, The protective plate (30) also at least partially covers the side of the motor (23) facing the door (13) and at least partially covers the side of the spring component (22) facing the door (13).

3. The spring operating mechanism for high-voltage switchgear according to claim 2, characterized in that, The plurality of box walls include a top wall (11) and a bottom wall (12) facing each other, and four peripheral walls located between the top wall (11) and the bottom wall (12). The four peripheral walls include a first peripheral wall serving as the box door (13), a second peripheral wall (14) facing the box door (13), and a third peripheral wall (15) and a fourth peripheral wall (16) facing each other. The protective plate (30) includes a main plate (31) and a sub-plate (32) connected to the main plate (31). The main plate (31) and the sub-plate (32) intersect each other perpendicularly. The main plate (31) is used to at least partially cover the side of the spring energy storage device (20) facing the door (13), and the sub-plate (32) is used to at least partially cover the side of the spring energy storage device (20) facing the third peripheral wall (15).

4. The spring operating mechanism for high-voltage switchgear according to claim 3, characterized in that, The high-voltage switchgear also includes a manual opening and closing device for manually opening or closing the high-voltage switchgear using manual tools. The main board (31) has a first opening (33), the position of the first opening (33) is opposite to the position of the manual opening and closing device, and the size of the first opening (33) is designed to be suitable for the manual tool to be inserted to perform manual opening or closing operation.

5. The spring operating mechanism for high-voltage switchgear according to claim 4, characterized in that, The main board (31) is provided with a cover plate for covering the first opening (33). The cover plate is rotatably mounted by means of a pivot (38) on the main board (31) located above the first opening (33) so that the cover plate can rotate about the pivot (38) between a first position and a second position in which the cover plate covers the first opening (33) and in the second position in which the cover plate exposes the first opening (33).

6. The spring operating mechanism for high-voltage switchgear according to claim 4, characterized in that, The high-voltage switchgear also includes a cable connection area. The motherboard (31) also has a second opening (34), which is located opposite to the cable wiring area, so as to allow the operator to observe and maintain multiple cables and multiple terminals in the cable wiring area.

7. The spring operating mechanism for high-voltage switchgear according to claim 4, characterized in that, A portion of the side edge of the main board (31) opposite to the sub-board (32) is recessed to form a first notch (35), which corresponds to a portion of the gear set (24) for maintenance of the gear set (24).

8. The spring operating mechanism for high-voltage switchgear according to claim 4, characterized in that, The lower end of the side edge of the main board (31) opposite to the sub-board (32) is recessed to form a second notch (36), which corresponds to a portion of the spring component (22) for maintenance of the spring component (22). Furthermore, a portion of the lower edge of the motherboard (31) is recessed to form a third notch (37), which is used to avoid the heater of the high-voltage switchgear.

9. The spring operating mechanism for high-voltage switchgear according to claim 4, characterized in that, The main board (31) has at least two through holes (39) in the middle region to mount the protective plate (30) onto the spring energy storage device (20) by means of at least two threaded parts passing through the at least two through holes (39).

10. A high-voltage switchgear, comprising three sets of moving contacts (1) and stationary contacts (2) for realizing three-phase opening and closing, characterized in that, The high-voltage switchgear further includes three spring operating mechanisms for the high-voltage switchgear according to any one of claims 1 to 9, for controlling the opening and closing of the high-voltage switchgear.

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