A high voltage fast switch cooperating with a solid state circuit breaker

Abstract

The application relates to the technical field of electrical equipment, in particular to a high-voltage fast switch matched with a solid-state circuit breaker, which comprises a circuit breaker body, multiple sets of disconnectors, a first knob for controlling the on-off of the circuit breaker body, multiple sets of second knobs for controlling the disconnectors, a first control mechanism and a second control mechanism, the first knob forms moving interference on the second knobs in an open state through the first control mechanism, the first control mechanism removes the moving interference on the second knobs in a closed state, and when the first knob and one or more sets of the second knobs are in the closed state, the first control mechanism and the second control mechanism can form moving interference on the second knobs when the first knob is opened, and can form interference on the first knob when the first knob and one or more sets of the second knobs are closed, so that the situation that the disconnectors are pulled together under load and the equipment is damaged or a safety accident occurs is avoided.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, specifically to a high-voltage fast switch in conjunction with a solid-state circuit breaker. Background Technology

[0002] Fixed circuit breakers are primarily used to protect circuits from overloads, short circuits, and other abnormal conditions. They are typically installed in distribution boxes as main power switches or protective devices for branch circuits. Fixed circuit breakers generally have a manual operating handle, allowing for manual opening and closing of the circuit. Existing circuit breakers are often used in conjunction with disconnecting switches. While circuit breakers can interrupt current, they do not provide a clear disconnect point and cannot ensure complete isolation of the power supply. Disconnecting switches, on the other hand, provide a clear disconnect point, ensuring that after disconnection, the equipment or line is completely isolated from the power supply, thus guaranteeing the safety of maintenance personnel.

[0003] When using circuit breakers and disconnectors, the operating sequence must be followed: first close the disconnector, then close the circuit breaker; and first open the circuit breaker, then open the disconnector. Users can easily confuse this sequence, leading to situations where the disconnector is opened or closed under load, causing equipment damage or safety accidents. Therefore, a high-voltage fast-acting switch in conjunction with a solid-state circuit breaker is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a high-voltage fast switch in conjunction with a solid-state circuit breaker to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-voltage fast switch in conjunction with a solid-state circuit breaker, comprising a circuit breaker body, multiple sets of disconnecting switches, a first knob for controlling the on / off state of the circuit breaker body, and a second knob for controlling the multiple sets of disconnecting switches, and further comprising a first control mechanism and a second control mechanism, wherein when the first knob is in the open state, the first control mechanism interferes with the movement of the second knob, and when the first knob is in the closed state, the first control mechanism releases the interference with the movement of the second knob;

[0006] When the first knob and one or more sets of second knobs are in the closed state, the second control mechanism interferes with the movement of the first knob; when all the second knobs are in the open state, the second control mechanism releases the interference with the movement of the first knob.

[0007] Preferably, the first control mechanism includes a first pneumatic component, a frame, a first limiting post, and a first limiting hole. The second knob surface is provided with a first limiting hole. Multiple sets of first limiting posts are provided and correspond one-to-one with the first limiting holes. The first limiting posts are inserted into the corresponding first limiting holes. Adjacent first limiting posts are connected through the frame. One set of first limiting posts is provided at the moving end of the first pneumatic component. The first pneumatic component is provided at the position when the first knob is open.

[0008] Preferably, the first pneumatic assembly includes a first airbag, a first connecting pipe, and a first cylinder. The first airbag and the first cylinder are disposed on the surface of the circuit breaker body, and the first airbag is compressed when the first knob is opened. The first airbag and the first cylinder are connected through the first connecting pipe. A first piston plate is slidably connected inside the first cylinder. A first piston rod is fixedly connected to the surface of the first piston plate. One end of the first piston rod extends through to the outer surface of the first cylinder and is fixedly connected to a first connecting plate. A set of first limiting posts is fixedly connected to the first connecting plate. A first spring is sleeved on the surface of the first piston rod. One end of the first spring is fixedly connected to the first cylinder, and the other end of the first spring is fixedly connected to the first connecting plate.

[0009] Preferably, the first piston rod is slidably connected to the first cylinder, and the first piston rod and the first cylinder are in clearance fit.

[0010] Preferably, when the second knob is in the open state, the first limiting post is aligned with the first limiting hole.

[0011] Preferably, the second control mechanism includes multiple sets of second pneumatic components, a second limiting post, and a second limiting hole. The first knob has a second limiting hole on its surface. The second limiting post is inserted into the second limiting hole. The second pneumatic component has multiple power ends, and each power end of the second pneumatic component corresponds to a second knob. The power ends of the second pneumatic components are located at the corresponding closed position of the second knob. When one or more sets of the second knobs are closed, the pneumatic component can drive the second limiting post to insert into the second limiting hole.

[0012] Preferably, the second pneumatic component includes a second cylinder, a connecting main pipe, and multiple sets of second airbags. Each second airbag corresponds to a second knob, and the second airbag is positioned at the closed position of the corresponding second knob. The connecting main pipe is connected through the air inlet of the second cylinder. Each of the second airbags is connected through the connecting main pipe via a second connecting pipe. A second piston plate is slidably connected inside the second cylinder. A second piston rod is fixedly connected to the surface of the second piston plate. One end of the second piston rod extends through to the outside of the second cylinder and is fixedly connected to a second connecting plate. The second connecting plate is fixedly connected to a second limiting post. A second spring is sleeved on the outer surface of the second piston rod. One end of the second spring is fixedly connected to the second connecting plate, and the other end of the second spring is fixedly connected to the second cylinder.

[0013] Preferably, the second piston rod is slidably connected to the second cylinder, and the second piston rod and the second cylinder are in clearance fit.

[0014] Preferably, when the first knob is in the closed state, the second limiting post is aligned with the second limiting hole.

[0015] Preferably, both the first control mechanism and the second control mechanism are provided with a fixing plate, and the fixing plate is installed on the surface of the circuit breaker body or the disconnector housing by means of connecting bolts.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention sets the first control mechanism so that when the first knob is open, the first control mechanism interferes with the movement of the second knob; when the first knob is closed, the first control mechanism releases the interference with the movement of the second knob. That is, the first knob can only be closed first, and then the second knob can be closed, following the operation sequence of first cutting off the circuit breaker body and then cutting off the disconnecting switch.

[0018] The present invention provides a second control mechanism. When the first knob and one or more sets of second knobs are closed, the second control mechanism can interfere with the first knob. Only after all the second knobs are opened can the first knob be opened, following the operation sequence of first connecting the isolating switch and then connecting the circuit breaker body. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the first knob and the second knob of the present invention when they are turned on;

[0020] Figure 2 This is a schematic diagram showing the first knob closed and the second knob open according to the present invention;

[0021] Figure 3 This is a schematic diagram of the first knob and one of the sets of second knobs of the present invention when they are closed;

[0022] Figure 4 For the present invention Figure 1 A schematic diagram of the structure when the first and second cylinders are cut apart;

[0023] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0024] Figure 6 For the present invention Figure 4 Enlarged view of point B in the middle;

[0025] Figure 7 This is a schematic diagram of the structure of the first control mechanism of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the second control mechanism of the present invention.

[0027] The components represented by each number in the attached diagram are listed below: 1. Circuit breaker body; 2. Disconnecting switch; 3. First knob; 4. Second knob; 5. First control mechanism; 51. First airbag; 52. Frame; 53. First limiting post; 54. First limiting hole; 55. First connecting pipe; 56. First cylinder; 57. First piston plate; 58. First piston rod; 59. First spring; 510. First connecting plate; 6. Second control mechanism; 61. Second limiting post; 62. Second airbag; 63. Second connecting pipe; 64. Second limiting hole; 65. Main connecting pipe; 66. Second spring; 67. Second connecting plate; 68. Second cylinder; 69. Second piston plate; 610. Second piston rod; 7. Fixing plate; 8. Connecting bolt. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-8 The diagram shows a high-voltage fast switch in conjunction with a solid-state circuit breaker, including a circuit breaker body 1, multiple sets of disconnecting switches 2, a first knob 3 for controlling the on / off state of the circuit breaker body 1, and a second knob 4 for controlling the multiple sets of disconnecting switches 2. It also includes a first control mechanism 5 and a second control mechanism 6. When the first knob 3 is in the open state, the first control mechanism 5 creates movement interference to the second knob 4. When the first knob 3 is in the closed state, the first control mechanism 5 releases the movement interference to the second knob 4.

[0030] When the first knob 3 and one or more sets of second knobs 4 are in the closed state, the second control mechanism 6 interferes with the movement of the first knob 3. When all the second knobs 4 are in the open state, the second control mechanism 6 releases the interference with the movement of the first knob 3.

[0031] Furthermore, the first control mechanism 5 includes a first pneumatic component, a frame 52, a first limiting post 53, and a first limiting hole 54. The surface of the second knob 4 is provided with a first limiting hole 54. Multiple sets of first limiting posts 53 are provided and correspond one-to-one with the first limiting holes 54. The first limiting posts 53 are inserted and engaged with the corresponding first limiting holes 54. Adjacent first limiting posts 53 are connected through the frame 52. One set of first limiting posts 53 is located at the moving end of the first pneumatic component. The first pneumatic component is located at the position when the first knob 3 is open.

[0032] Furthermore, the first pneumatic assembly includes a first airbag 51, a first connecting pipe 55, and a first cylinder 56. The first airbag 51 and the first cylinder 56 are disposed on the surface of the circuit breaker body 1, and the first airbag 51 is compressed when the first knob 3 is opened. The first airbag 51 and the first cylinder 56 are connected through the first connecting pipe 55. A first piston plate 57 is slidably connected inside the first cylinder 56. A first piston rod 58 is fixedly connected to the surface of the first piston plate 57. One end of the first piston rod 58 extends through to the outer surface of the first cylinder 56 and is fixedly connected to a first connecting plate 510. A set of first limiting posts 53 are fixedly connected to the first connecting plate 510. A first spring 59 is sleeved on the surface of the first piston rod 58. One end of the first spring 59 is fixedly connected to the first cylinder 56, and the other end of the first spring 59 is fixedly connected to the first connecting plate 510.

[0033] Furthermore, the first piston rod 58 is slidably connected to the first cylinder 56, and the first piston rod 58 and the first cylinder 56 are in clearance fit.

[0034] Furthermore, when the second knob 4 is in the open position, the first limiting post 53 is aligned with the first limiting hole 54.

[0035] In this embodiment, when both the first knob 3 and the second knob 4 are in the open state, the first knob 3 presses the first airbag 51. The gas inside the first airbag 51 enters the first cylinder 56 through the first connecting pipe 55, pushing the first piston plate 57, the first piston rod 58, the first connecting plate 510, the first limiting post 53, and the frame 52 to move, causing the first limiting post 53 to insert into the corresponding first limiting hole 54, thereby limiting the second knob 4 and preventing it from rotating; and during this process, the first spring 59 serves as... In the stretched state, after the user closes the first knob 3, the first airbag 51 is restored by its own elastic force. The gas in the first cylinder 56 flows back to the inside of the first airbag 51 through the first connecting pipe 55. The stretched first spring 59 returns to its original position, driving the first piston plate 57, the first piston rod 58, the first connecting plate 510, the first limiting post 53, and the frame 52 to return to their original positions. This causes the first limiting post 53 to move out of the corresponding first limiting hole 54. The first limiting post 53 no longer obstructs the second knob 4, and the user can close the second knob 4.

[0036] Furthermore, the second control mechanism 6 includes multiple sets of second pneumatic components, a second limiting post 61, and a second limiting hole 64. The surface of the first knob 3 is provided with a second limiting hole 64. The second limiting post 61 is inserted into the second limiting hole 64. The power end of the second pneumatic component is provided with multiple sets. The power end of the second pneumatic component corresponds one-to-one with the second knob 4. The power end of the second pneumatic component is located at the corresponding closed position of the second knob 4. When one or more sets of second knobs 4 are closed, the pneumatic component can drive the second limiting post 61 to insert into the second limiting hole 64.

[0037] Furthermore, the second pneumatic assembly includes a second cylinder 68, a connecting main pipe 65, and multiple sets of second airbags 62. Each second airbag 62 corresponds to a second knob 4, and the second airbag 62 is positioned at the corresponding closed position of the second knob 4. The connecting main pipe 65 is connected through the air inlet of the second cylinder 68. Each second airbag 62 is connected through the connecting main pipe 65 via a second connecting pipe 63. A second piston plate 69 is slidably connected inside the second cylinder 68. A second piston rod 610 is fixedly connected to the surface of the second piston plate 69. One end of the second piston rod 610 extends through to the outside of the second cylinder 68 and is fixedly connected to a second connecting plate 67. The second connecting plate 67 is fixedly connected to a second limiting post 61. A second spring 66 is sleeved on the outer surface of the second piston rod 610. One end of the second spring 66 is fixedly connected to the second connecting plate 67, and the other end of the second spring 66 is fixedly connected to the second cylinder 68.

[0038] Furthermore, the second piston rod 610 is slidably connected to the second cylinder 68, and the second piston rod 610 and the second cylinder 68 are in clearance fit.

[0039] Furthermore, when the first knob 3 is in the closed state, the second limiting post 61 is aligned with the second limiting hole 64.

[0040] In this embodiment, when the first knob 3 and one or more sets of second knobs 4 are in the closed state, the closed second knobs 4 compress the second airbag 62. The gas in the second airbag 62 enters the second cylinder 68 through the second connecting pipe 63 and the connecting main pipe 65, pushing the second piston plate 69, the second piston rod 610, the second connecting plate 67, and the second limiting post 61 to move, so that the second limiting post 61 inserts into the corresponding second limiting hole 64, thereby limiting the first knob 3 and preventing it from rotating; and during this process When the second spring 66 is in a stretched state, after the user opens all the second knobs 4, the second airbag 62 is restored by its own elastic force. The gas in the second cylinder 68 flows back to the second airbag 62 through the second connecting pipe 63. The stretched second spring 66 is reset, which drives the second piston plate 69, the second piston rod 610, the second connecting plate 67 and the second limiting post 61 to reset. This causes the second limiting post 61 to move out of the corresponding second limiting hole 64. The second limiting post 61 no longer obstructs the first knob 3, and the user can open the first knob 3.

[0041] Furthermore, both the first control mechanism 5 and the second control mechanism 6 are provided with fixing plates 7. The fixing plates 7 are installed on the surface of the circuit breaker body 1 or the disconnector switch 2 housing by means of connecting bolts 8. The fixing plates 7 and connecting bolts 8 are provided to facilitate the installation of the first control mechanism 5 and the second control mechanism 6.

[0042] Working principle: This application sets that when the first control mechanism 5 and the first knob 3 are open, the first control mechanism 5 interferes with the movement of the second knob 4. When the first knob 3 is closed, the first control mechanism 5 releases the interference with the movement of the second knob 4. That is, the first knob 3 can only be closed first, and then the second knob 4 can be closed. The operation sequence of cutting off the circuit breaker body 1 first and then cutting off the disconnecting switch 2 is followed.

[0043] By setting the second control mechanism 6, when the first knob 3 and one or more sets of second knobs 4 are closed, the second control mechanism 6 can interfere with the first knob 3. Only after all the second knobs 4 are opened can the first knob 3 be opened, following the operation sequence of first connecting the isolating switch 2 and then connecting the circuit breaker body 1.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-voltage fast switch in conjunction with a solid-state circuit breaker, comprising a circuit breaker body (1), multiple disconnect switches (2), a first knob (3) for controlling the on / off state of the circuit breaker body (1), and a second knob (4) for controlling the multiple disconnect switches (2), characterized in that: It also includes a first control mechanism (5) and a second control mechanism (6). When the first knob (3) is in the open state, it interferes with the movement of the second knob (4) through the first control mechanism (5). When the first knob (3) is in the closed state, the first control mechanism (5) releases the interference with the movement of the second knob (4). When the first knob (3) and one or more sets of second knobs (4) are in the closed state, the second control mechanism (6) interferes with the movement of the first knob (3); when all the second knobs (4) are in the open state, the second control mechanism (6) releases the interference with the movement of the first knob (3). The first control mechanism (5) includes a first pneumatic component, a frame (52), a first limiting post (53), and a first limiting hole (54). The second knob (4) is provided with a first limiting hole (54) on its surface. Multiple sets of first limiting posts (53) are provided and correspond one-to-one with the first limiting holes (54). The first limiting posts (53) are inserted into the corresponding first limiting holes (54). Adjacent first limiting posts (53) are connected through the frame (52). One set of first limiting posts (53) is provided at the moving end of the first pneumatic component. The first pneumatic component is provided at the position when the first knob (3) is open. The first pneumatic component includes a first air bag (51), a first connecting pipe (55), and a first cylinder (56). The first air bag (51) and the first cylinder (56) are provided with the circuit breaker body. (1) Surface, and when the first knob (3) is opened, it presses the first airbag (51). The first airbag (51) and the first cylinder (56) are connected through the first connecting pipe (55). The first cylinder (56) is slidably connected to the inside of the first piston plate (57). The surface of the first piston plate (57) is fixedly connected to the first piston rod (58). One end of the first piston rod (58) extends through to the outer surface of the first cylinder (56) and is fixedly connected to the first connecting plate (510). A set of first limiting posts (53) are fixedly connected to the first connecting plate (510). The surface of the first piston rod (58) is sleeved with a first spring (59). One end of the first spring (59) is fixedly connected to the first cylinder (56), and the other end of the first spring (59) is fixedly connected to the first connecting plate (510). The second control mechanism (6) includes multiple sets of second pneumatic components, a second limiting post (61) and a second limiting hole (64). The first knob (3) has a second limiting hole (64) on its surface. The second limiting post (61) and the second limiting hole (64) are inserted into each other. The second pneumatic component has multiple sets of power ends. The power ends of the second pneumatic component correspond one-to-one with the second knob (4). The power ends of the second pneumatic component are located at the closed position of the corresponding second knob (4). When one or more sets of the second knob (4) are closed, the pneumatic component can drive the second limiting post (61) to insert into the second limiting hole (64). The second pneumatic component includes a second cylinder (68), a connecting main pipe (65) and multiple sets of second airbags (62). The second airbags (62) correspond one-to-one with the second knob (4). 62) Set at the corresponding second knob (4) closed position, the second cylinder (68) is connected to the air port through the main pipe (65), the second airbags (62) are all connected to the main pipe (65) through the second connecting pipe (63), the second cylinder (68) is slidably connected to the second piston plate (69), the surface of the second piston plate (69) is fixedly connected to the second piston rod (610), one end of the second piston rod (610) extends to the outside of the second cylinder (68) and is fixedly connected to the second connecting plate (67), the second connecting plate (67) is fixedly connected to the second limiting post (61), the outer surface of the second piston rod (610) is sleeved with the second spring (66), one end of the second spring (66) is fixedly connected to the second connecting plate (67), and the other end of the second spring (66) is fixedly connected to the second cylinder (68).

2. The high-voltage fast switch in conjunction with a solid-state circuit breaker according to claim 1, characterized in that: The first piston rod (58) is slidably connected to the first cylinder (56), and the first piston rod (58) and the first cylinder (56) are in clearance fit.

3. A high-voltage fast switch in conjunction with a solid-state circuit breaker according to claim 2, characterized in that: When the second knob (4) is in the open state, the first limiting post (53) is aligned with the first limiting hole (54).

4. A high-voltage fast switch in conjunction with a solid-state circuit breaker according to claim 3, characterized in that: The second piston rod (610) is slidably connected to the second cylinder (68), and the second piston rod (610) and the second cylinder (68) are in clearance fit.

5. A high-voltage fast switch in conjunction with a solid-state circuit breaker according to claim 4, characterized in that: When the first knob (3) is in the closed state, the second limiting post (61) is aligned with the second limiting hole (64).

6. A high-voltage fast switch in conjunction with a solid-state circuit breaker according to claim 1, characterized in that: The first control mechanism (5) and the second control mechanism (6) are both provided with a fixing plate (7), and the fixing plate (7) is installed on the surface of the circuit breaker body (1) or the disconnector switch (2) housing by means of connecting bolts (8).

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