Modular circuit breaker operating mechanism, gas insulated switchgear circuit breaker

Abstract

The utility model relates to a kind of modularized circuit breaker operating mechanism, including frame and operating mechanism, three-phase output crank is arranged in the frame, and the operating mechanism is installed in frame front end;The detachable connection between the upper end frame front end surface of the opening spring of the operating mechanism is made, and the lower end of opening spring is connected with transmission main shaft through opening crank;The transmission main shaft is located in the lower part of operating mechanism, and three-phase main shaft crank is arranged on the transmission main shaft, and three-phase main shaft crank is connected with three-phase output crank through transmission connecting rod respectively.A kind of air-filled cabinet circuit breaker, characterized in that, including air-filled cabinet cabinet body, isolator and circuit breaker operating mechanism;Circuit breaker operating mechanism realizes modularization, and operating mechanism does not need to be installed in frame interior, and operating mechanism is installed more simply and flexibly in frame front side, maintenance is convenient, reduces the number of parts, action is reliable, saves resource.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment, specifically to a modular circuit breaker operating mechanism and a gas-insulated switchgear circuit breaker. Background Technology

[0002] With the continuous development of the domestic new energy market, especially the vigorous promotion of industries such as wind power and photovoltaics, C-GIS gas-insulated switchgear circuit breakers are being used more and more, with increasingly higher requirements and fiercer competition. Currently, the core unit of C-GIS circuit breakers on the market—the circuit breaker operating mechanism—is large in size, has many parts, is relatively heavy, and has high costs.

[0003] The existing circuit breaker operating mechanism, see the prior patent CN119811925A-Modular Operating Mechanism, Vacuum Circuit Breaker and Assembly Method Thereof, includes a frame and an operating mechanism. The operating mechanism is installed in the frame. The frame includes a top plate, a bottom plate, left and right side plates and a back plate. The frame as a whole is a box structure. This kind of frame is large in volume and has high manufacturing cost. The interlocking structure with protective function is complex and has many parts. The operating mechanism is installed in such a frame, which is also inconvenient to maintain. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a modular circuit breaker operating mechanism and gas-filled switchgear circuit breaker, so as to solve the technical problems of large size, inconvenient assembly and maintenance of previous circuit breaker operating mechanisms.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A modular circuit breaker operating mechanism is provided, including a frame and an operating mechanism, comprising... A three-phase output crank arm is provided inside the frame, the operating mechanism is installed at the front end of the frame, and the rear end of the operating mechanism is fastened to the frame by multiple bolts. The upper end frame of the operating mechanism is detachably connected to the front end face of the opening spring, and the lower end of the opening spring is connected to the transmission main shaft via the opening crank arm. The transmission spindle is located at the lower part of the operating mechanism. A three-phase spindle crank arm is provided on the transmission spindle. The three-phase spindle crank arms are respectively connected to the three-phase output crank arms via transmission connecting rods.

[0006] Furthermore, the frame includes a front side plate, a rear side plate, a left side plate, a right side plate, and a plurality of intermediate stiffeners. The front side plate, rear side plate, left side plate, and right side plate are connected to form a quadrilateral frame. The intermediate stiffeners are located inside the frame and are respectively connected to the front side plate and the rear side plate. The frame is provided with three pairs of mounting plates, and each pair of mounting plates is connected to an output crank arm via a pin shaft. The front and rear side plates are respectively provided with through holes for the output crank arm to extend.

[0007] Furthermore, a damper is provided on the front side of the frame, and a damping cam is provided on the transmission main shaft. The damper is arranged in a front-rear direction on the frame.

[0008] Furthermore, the operating mechanism includes a pair of mechanism side plates, and an energy storage mechanism, a closing mechanism, and a opening mechanism are installed between the two mechanism side plates; Multiple connecting columns are used to fix the two mechanism side plates together; The rear end of the mechanism side plate is bent to form a connecting plate, and multiple connecting bolts pass through the connecting plate and the front side plate of the frame, thereby fixing the mechanism side plate to the front end of the frame.

[0009] Furthermore, the position of the transmission spindle on the operating mechanism is lower than the lower end of the frame.

[0010] Furthermore, the energy storage spring of the energy storage mechanism is suspended on the outside of the mechanism side plate. The lower end of the energy storage spring is connected to the energy storage shaft, and the upper end of the energy storage spring is connected to the hanging shaft. The hanging shaft passes through the two mechanism side plates.

[0011] The second aspect provides a gas-insulated switchgear circuit breaker, including... Gas-insulated switchgear cabinet, disconnecting switch and circuit breaker operating mechanism; Both the disconnecting switch and the circuit breaker operating mechanism are mounted on the cabinet, with the disconnecting switch located above the circuit breaker operating mechanism; The circuit breaker operating mechanism adopts the aforementioned modular circuit breaker operating mechanism, which is connected to the cabinet via a frame.

[0012] Furthermore, it also includes The interlocking crank arm is mounted on the drive shaft and located below the interlocking rod. The interlocking lever is elastically movable up and down on the outside of the mechanism's side plate, and in the normal state, the interlocking lever remains in an upward position. The disconnect switch includes a door lock plate that can move left and right. A groove is provided at the lower end of the door lock plate, and inclined surfaces are provided on both sides of the groove. The upper end of the interlocking rod extends into the groove. The closing half-shaft of the closing mechanism is located on one side of the interlocking rod; When the door lock plate moves to the left or right position, the door lock plate presses down on the interlocking rod through the groove slope, thereby moving the interlocking rod to the lower position. At this time, the interlocking rod blocks the closing half shaft, thereby restricting the closing half shaft from rotating to close. When the circuit breaker operating mechanism closes, the interlocking crank arm blocks the lower end of the interlocking rod, restricting the downward movement of the interlocking rod, thereby restricting the left and right movement of the door lock plate.

[0013] The beneficial effects of this utility model are: The circuit breaker operating mechanism is modularized, eliminating the need for the operating mechanism to be installed inside the frame. Installing the operating mechanism on the front side of the frame is simpler, more flexible, easier to maintain, reduces the number of parts, ensures reliable operation, and saves resources.

[0014] The gas-insulated switchgear circuit breaker adopts this modular circuit breaker operating mechanism, which makes assembly relatively more convenient. The interlock between the disconnecting switch and the circuit breaker mechanism relies on a locking rod, which, together with the groove on the door lock plate, the closing half shaft, and the interlocking crank arm, simplifies the interlocking structure. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the operating mechanism of the modular circuit breaker of this utility model; Figure 2 This is a schematic diagram of the framework; Figure 3 This is a schematic diagram of the operating mechanism; Figure 4 This is a schematic diagram of a gas-insulated switchgear circuit breaker; Figure 5 This is a schematic diagram of a chain structure; Among them, 1. Frame, 11. Front side plate, 12. Rear side plate, 13. Output crank arm, 14. Damper; 2. Operating mechanism; 21. Mechanism side plate; 211. Connecting plate; 22. Transmission main shaft; 23. Main shaft crank arm; 24. Opening crank arm; 25. Damping cam; 26. Closing half shaft. 3. Clamping spring; 4. Energy storage spring; 41. Hanging shaft; 5. Interlocking lever; 51. Interlocking crank arm; 6. Cabinet; 7. Disconnect switch; 71. Door lock plate. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] This application provides a modular circuit breaker operating mechanism, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0019] To address the technical problems of large size, inconvenient assembly and maintenance of existing circuit breaker operating mechanisms, one embodiment of this application provides a modular circuit breaker operating mechanism. This is described in detail below.

[0020] like Figures 1 to 3 As shown. A modular circuit breaker operating mechanism includes a frame 1 and an operating mechanism 2. A three-phase output crank arm 13 is provided inside the frame 1. The operating mechanism 2 is installed at the front end of the frame 1, and the rear end of the operating mechanism 2 is fastened to the frame 1 by multiple bolts. The upper end frame 1 of the operating mechanism 2 is detachably connected to the front end face of the opening spring 3, and the lower end of the opening spring 3 is connected to the transmission main shaft 22 via the opening crank arm 24. The transmission spindle 22 is located at the lower part of the operating mechanism 2. A three-phase spindle crank arm 23 is provided on the transmission spindle 22. The three-phase spindle crank arm 23 is connected to the three-phase output crank arm 13 via a transmission connecting rod.

[0021] In this embodiment, the operating mechanism 2 is connected and fastened to the frame 1 by two rows of bolts.

[0022] In this embodiment, the upper end of the throttle spring 3 is connected to the frame 1 through an L-shaped corner plate. The vertical plate of the corner plate is connected to the frame 1 by bolts. The upper end of the throttle spring 3 passes through the horizontal plate of the corner plate and is connected to the stop pin.

[0023] Specifically, as an optional implementation method in this embodiment, such as Figure 1 and Figure 2 As shown, the frame 1 includes a front side plate 11, a rear side plate 12, a left side plate, a right side plate, and a plurality of intermediate stiffeners. The front side plate 11, the rear side plate 12, the left side plate, and the right side plate are connected to form a quadrilateral frame 1. The intermediate stiffeners are located inside the frame 1 and connect the front side plate 11 and the rear side plate 12. The frame 1 is provided with three pairs of mounting plates, and each pair of mounting plates is connected to the output crank arm 13 via a pin shaft. The front side plate 11 and the rear side plate 12 are respectively provided with through holes for the output crank arm 13 to extend.

[0024] The entire output crank arm 13 has an obtuse angle structure. One end of the output crank arm 13 is connected to the transmission main shaft 22, and the other end is connected to the pole post inside the cabinet 6.

[0025] Specifically, as an optional implementation method in this embodiment, such as Figure 2 As shown, a damper 14 is provided on the front side of the frame 1, and a damping cam 25 is provided on the transmission main shaft 22. The damper 14 is arranged in a front-rear direction on the frame 1.

[0026] When the circuit breaker trips, the drive shaft 22 contacts the damper 14 through the damping cam 25, thereby reducing the impact force.

[0027] Specifically, as an optional implementation method in this embodiment, such as Figure 1 and Figure 3 As shown, the operating mechanism 2 includes a pair of mechanism side plates 21, and an energy storage mechanism, a closing mechanism, and a opening mechanism are installed between the two mechanism side plates 21; The two side plates 21 of the mechanism are fixedly connected by multiple connecting columns; The rear end of the mechanism side plate 21 is bent to form a connecting plate 211. Multiple connecting bolts pass through the connecting plate 211 and the front side plate 11 of the frame 1, thereby fixing the mechanism side plate 21 to the front end of the frame 1.

[0028] In this embodiment, the energy storage mechanism, closing mechanism, and opening mechanism are existing technologies. For details, please refer to the prior patent application CN119811925A-Modular Operating Mechanism 2, Vacuum Circuit Breaker and its Assembly Method.

[0029] Specifically, as an optional implementation method in this embodiment, such as Figure 1 As shown, the position of the transmission spindle 22 on the operating mechanism 2 is lower than the lower end of the frame 1.

[0030] The new installation structure between the operating mechanism 2 and the frame 1 makes the structure of the frame 1 simpler and reduces the height of the frame 1.

[0031] Specifically, as an optional implementation method in this embodiment, such as Figure 3 As shown, the energy storage spring 4 of the energy storage mechanism is suspended on the outside of the mechanism side plate 21. The lower end of the energy storage spring 4 is connected to the energy storage shaft, and the upper end of the energy storage spring 4 is connected to the hanging shaft 41. The hanging shaft 41 passes through the two mechanism side plates 21.

[0032] The right end of the hanging shaft 41 passes through the side plate 21 of the mechanism and is connected to the locking nut. The left end of the hanging shaft 41 extends out of the side plate 21 of the mechanism and forms a cantilever structure. The energy storage spring 4 is suspended in the cantilever position. In the past, the upper end of the energy storage spring 4 was suspended from the top of the frame 1, which was more troublesome to install. Now, the operating mechanism 2 is directly installed at the front end of the frame 1, which makes the installation of the energy storage spring 4 and the trip spring 3 very convenient.

[0033] The modular circuit breaker operating mechanism of this utility model allows the frame 1 and operating mechanism 2 to be assembled into modules. The frame 1 is constructed first, consisting of a front side plate 11, a rear side plate 12, a left side plate, a right side plate, and multiple intermediate stiffeners joined together and spot-welded. Three main shaft crank arms 23 and a damper 14 are pre-installed within the frame 1. The operating mechanism 2 is then constructed as a single unit. The trip spring 3 can be omitted initially, while the energy storage spring 4 must be installed on the operating mechanism 2. The operating mechanism 2 is securely connected to the frame 1 using two rows of bolts on the rear side. The trip spring 3 is assembled during the installation of the operating mechanism 2, and the main shaft crank arms 23 and the output crank arms 13 are connected via a transmission linkage. The entire circuit breaker mechanism is essentially divided into two parts, which can be transported separately to the site for further assembly.

[0034] Another embodiment of this application provides a gas-insulated switchgear circuit breaker. This is described in detail below.

[0035] like Figure 4 and Figure 5 As shown, a gas-insulated switchgear circuit breaker includes... 6. Gas-filled switch cabinet, 7. Disconnecting switch and circuit breaker operating mechanism; The disconnecting switch 7 and the circuit breaker operating mechanism are both installed on the cabinet 6, with the disconnecting switch 7 located above the circuit breaker operating mechanism; The circuit breaker operating mechanism adopts the above-mentioned modular circuit breaker operating mechanism, and the circuit breaker operating mechanism is connected to the cabinet 6 via the frame 1.

[0036] In one embodiment, the rear side of the disconnect switch 7 is connected to the cabinet 6 via four corner brackets. The brackets can control the front and rear positions of the disconnect switch 7 so that the disconnect switch 7 can be positioned directly above the operating mechanism 2.

[0037] In this embodiment, the disconnect switch 7 includes a door lock plate 71, which can move left and right. A groove is provided at the lower end of the door lock plate 71, and inclined surfaces are provided on both sides of the groove. When the door lock plate 71 moves to the right side, the grounding operation hole is opened, and the operation handle can be inserted to perform the grounding operation. When the door lock plate 71 moves to the left side, the operation handle can be inserted to perform the isolation operation.

[0038] Specifically, as an optional implementation method in this embodiment, such as Figure 5 As shown, the circuit breaker also includes The interlocking crank arm 51 is mounted on the transmission main shaft 22 and located below the interlocking rod 5; The interlocking rod 5 is elastically movable up and down on the outside of the mechanism side plate 21. The interlocking rod 5 is normally kept moving upward; the upper end of the interlocking rod 5 extends into the groove. The closing half-shaft 26 of the closing mechanism is located on one side of the interlocking rod 5; When the door lock plate 71 moves to the left or right position, the door lock plate 71 presses down on the interlocking rod 5 through the groove slope, thereby moving the interlocking rod 5 to the lower position. At this time, the interlocking rod 5 blocks the closing half shaft 26, thereby restricting the closing half shaft 26 from performing closing rotation. At this time, the circuit breaker is prohibited from closing, that is, when the manual operation is isolated, the circuit breaker mechanism is prohibited from closing.

[0039] When the circuit breaker operating mechanism is closed, the interlocking crank arm 51 blocks the lower end of the interlocking rod 5, restricting the interlocking rod 5 from moving downward, thereby restricting the door lock plate 71 from moving left and right. At this time, the isolating switch 7 cannot be operated manually. That is, after the circuit breaker is closed, the isolating switch 7 is prohibited from being operated.

[0040] In one embodiment, a spring is sleeved on the interlocking rod 5, and the spring drives the interlocking rod 5 to move upward.

[0041] In one embodiment, multiple lever seats are provided on the side plate 21 of the mechanism, and the interlocking rod 5 passes through the lever seats to guide the interlocking rod 5 to move up and down.

[0042] The gas-insulated switchgear circuit breaker in this embodiment has an optimized interlocking structure. The traditional interlocking between the disconnect switch 7 and the circuit breaker mechanism requires more than a dozen parts to achieve in other mechanisms on the market. This embodiment relies on an interlocking rod 5, in conjunction with the groove on the door lock plate 71, the closing half shaft 26, and the interlocking crank arm 51, to simplify the interlocking structure.

[0043] All the devices selected in this application (parts whose specific structures are not specified) are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0044] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0047] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0048] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0049] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A modular circuit breaker operating mechanism, comprising a frame and an operating mechanism, characterized in that, A three-phase output crank arm is provided inside the frame, the operating mechanism is installed at the front end of the frame, and the rear end of the operating mechanism is fastened to the frame by multiple bolts. The upper end frame of the operating mechanism is detachably connected to the front end face of the opening spring, and the lower end of the opening spring is connected to the transmission main shaft via the opening crank arm. The transmission spindle is located at the lower part of the operating mechanism. A three-phase spindle crank arm is provided on the transmission spindle. The three-phase spindle crank arms are respectively connected to the three-phase output crank arms via transmission connecting rods.

2. The modular circuit breaker operating mechanism according to claim 1, characterized in that, The frame includes a front side plate, a rear side plate, a left side plate, a right side plate, and multiple intermediate stiffeners. The front side plate, rear side plate, left side plate, and right side plate are connected to form a quadrilateral frame. The intermediate stiffeners are located inside the frame and are respectively connected to the front side plate and the rear side plate. The frame is provided with three pairs of mounting plates, and each pair of mounting plates is connected to an output crank arm via a pin shaft. The front and rear side plates are respectively provided with through holes for the output crank arm to extend.

3. The modular circuit breaker operating mechanism according to claim 1, characterized in that, A damper is provided on the front side of the frame, and a damping cam is provided on the transmission main shaft. The damper is arranged in a front-rear direction on the frame.

4. The modular circuit breaker operating mechanism according to claim 1, characterized in that, The operating mechanism includes a pair of mechanism side plates, and an energy storage mechanism, a closing mechanism, and a opening mechanism are installed between the two mechanism side plates; Multiple connecting columns are used to fix the two mechanism side plates together; The rear end of the mechanism side plate is bent to form a connecting plate, and multiple connecting bolts pass through the connecting plate and the front side plate of the frame, thereby fixing the mechanism side plate to the front end of the frame.

5. The modular circuit breaker operating mechanism according to claim 1, characterized in that, The position of the transmission spindle on the operating mechanism is lower than the lower end of the frame.

6. The modular circuit breaker operating mechanism according to claim 4, characterized in that, The energy storage spring of the energy storage mechanism is suspended on the outside of the side plate of the mechanism. The lower end of the energy storage spring is connected to the energy storage shaft, and the upper end of the energy storage spring is connected to the hanging shaft. The hanging shaft passes through the two side plates of the mechanism.

7. A gas-insulated switchgear circuit breaker, characterized in that, include Gas-insulated switchgear cabinet, disconnecting switch and circuit breaker operating mechanism; Both the disconnecting switch and the circuit breaker operating mechanism are mounted on the cabinet, with the disconnecting switch located above the circuit breaker operating mechanism; The circuit breaker operating mechanism adopts the modular circuit breaker operating mechanism according to any one of claims 1-6, and the circuit breaker operating mechanism is connected to the cabinet via a frame.

8. The gas-insulated switchgear circuit breaker according to claim 7, characterized in that, Also includes The interlocking crank arm is mounted on the drive shaft and located below the interlocking rod. The interlocking lever is elastically movable up and down on the outside of the mechanism's side plate, and in the normal state, the interlocking lever remains in an upward position. The disconnect switch includes a door lock plate that can move left and right. A groove is provided at the lower end of the door lock plate, and inclined surfaces are provided on both sides of the groove. The upper end of the interlocking rod extends into the groove. The closing half-shaft of the closing mechanism is located on one side of the interlocking rod; When the door lock plate moves to the left or right position, the door lock plate presses down on the interlocking rod through the groove slope, thereby moving the interlocking rod to the lower position. At this time, the interlocking rod blocks the closing half shaft, thereby restricting the closing half shaft from rotating to close. When the circuit breaker operating mechanism closes, the interlocking crank arm blocks the lower end of the interlocking rod, restricting the downward movement of the interlocking rod, thereby restricting the left and right movement of the door lock plate.

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