Combined switch for asynchronous operation between in-phase multiple fractures
By introducing an asynchronous operation mechanism into the in-phase multi-break switch, only one fracture is ablated separately during the disconnection and closing process, the arc ablation problem caused by synchronous operation is solved and the service life of the switch is extended.
Patent Information
- Application Number
- CN202421047686.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The existing in-phase multi-break switches have arc ablation of both the dynamic and static contacts when the switch is closed and the current is off due to synchronous operation, which shortens the service life of the switch.
Design an asynchronous operation combination switch between in-phase multi-breaks. Each phase is connected in series by an open fracture group and a close fracture group. The operation between the open fracture group and the close fracture group is performed asynchronously, through the preset time T1 and T2 control the breaking and closing sequence, using mechanical or electrical signal control, and only one fracture is ablated separately during the breaking and closing process.
It extends the service life of the switch, avoids multiple break ablation caused by synchronous operation, and improves the reliability and durability of the switch.
Smart Images
Figure CN222300551U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electrical switches, in particular to an asynchronously operated combination switch between multiple breaks in the same phase. Background Art
[0002] Figure 1 It is a typical schematic diagram of an existing same-phase double-break switch, such as Figure 1 As shown, in the prior art, the same-phase double-break switch includes an operating mechanism 01, a main operating shaft 02, a ground support insulator 03, an insulating operating rod 04, an operating arm 05, a moving contact 06, a static contact 07, an outlet terminal 08, and a break support insulator 09, and the left and right break structures are symmetrical and identical.
[0003] The two breaks are supported and assembled by the break support insulator 09, and the overall insulation to the ground is supported by the ground support insulator 03. When the operating mechanism 01 drives the main operating shaft 02 to rotate and drives the insulating operating rod 04 to move up and down, the moving contact 06 is driven to move left and right by driving the symmetrical operating arm 05, so as to achieve the contact or separation between the moving contact 06 and the static contact 07, forming the opening or closing of the two-break switch output terminals 08. The left and right breaks are operated by the insulating operating rod 04, and the moving contact 06 is driven to move symmetrically to the left and right, so that the operation of the two breaks is completely mechanically synchronized. This switch with synchronous breaks in the same phase has the function of arc erosion of the moving contacts 06 and the static contacts 07 of all breaks when the switch is closed and the current is interrupted, which increases the degree of contact erosion and greatly shortens the service life of the switch.
[0004] Not limited to Figure 1 As shown, the existing multiple same-phase multi-break switches are all synchronously operated between the same-phase breaks, that is, the opening and closing operations of each break of the same phase are synchronized (of course, there are now asynchronous switches for operating breaks between different phases), and this synchronous control can be mechanical or electrical. Figure 2 Show Figure 1 The moving contact 06 and the stationary contact 07 are in the open state. Utility Model Content
[0005] The utility model provides a same-phase multi-break asynchronous operation combined switch, which is used to solve the technical problems existing in the prior art.
[0006] In order to achieve the above-mentioned object, the utility model provides a combination switch with asynchronous operation between multiple breaks in the same phase, the combination switch is a three-phase combination switch, each phase of the combination switch is composed of an opening break group and a closing break group connected in series, the opening break group is composed of one or more opening breaks, the closing break group is composed of one or more closing breaks, the switch breaks within the opening break group and the closing break group are synchronously operated, and the switch breaks between the opening break group and the closing break group are asynchronously operated.
[0007] When the combination switch is closed, the opening break group is closed first, and after a preset time T1, the closing break group is closed.
[0008] When the combination switch is opened, the opening break group is disconnected first, and after a preset time T2, the closing break group is disconnected.
[0009] In one embodiment of the utility model, one phase of the combination switch includes an operating mechanism, a ground support insulator, an insulating operating rod, a mechanical transmission pin, a mechanical transmission pin slide, an upper outlet terminal, a lower outlet terminal, an opening break, a closing break, a mechanical transmission box and a main operating shaft. The opening break includes an opening break operating rod, an opening break moving contact, an opening break static contact and an opening break support insulator. The closing break includes a closing break operating arm, a closing break operating rod, a closing break moving contact, a closing break static contact and a closing break support insulator.
[0010] The main operating shaft is located inside the operating mechanism. The main operating shaft is connected to the lower end of the insulating operating rod. The operating mechanism drives the main operating shaft to rotate and drives the insulating operating rod to move up and down.
[0011] The ground support insulator is set between the operating mechanism and the mechanical transmission box, and the breaking support insulator is set between the upper outlet terminal and the mechanical transmission box.
[0012] The upper end of the insulating operating rod is connected to the mechanical transmission pin. The mechanical transmission pin slide groove is set on the breaking fracture operating rod. The mechanical transmission pin can slide up and down along the mechanical transmission pin slide groove.
[0013] The breaking break moving contact is connected to the upper end of the breaking break operating rod, and the breaking break static contact is connected to the upper outlet terminal. The breaking break operating rod drives the breaking break moving contact to move up and down, so that the breaking break moving contact and the breaking break static contact are in contact or separated.
[0014] The two ends of the closing break operating arm are respectively connected to the mechanical transmission pin and the closing break operating rod, the other end of the closing break operating rod is connected to the closing break moving contact, the closing break static contact is connected to the lower outlet terminal, and the closing break operating rod drives the closing break moving contact to move left and right, so that the closing break moving contact and the closing break static contact are in contact or separated.
[0015] In one embodiment of the utility model, the arc extinguishing medium used for opening the break and closing the break is any one of the following: SF6 gas, vacuum and compressed air.
[0016] In an embodiment of the present invention, the lengths of the preset time T1 and the preset time T2 are controlled mechanically or by electrical signals.
[0017] In the working process of the asynchronous operation combination switch between multiple breaks in the same phase provided by the utility model, only one break is burned in the opening process and the closing process respectively, which will greatly prolong the service life of the switch. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 It is a schematic diagram of a typical existing same-phase double-break switch;
[0020] Figure 2 for Figure 1 A schematic diagram showing that the moving contact 06 and the stationary contact 07 are in an open state;
[0021] Figure 3 It is a schematic diagram of an embodiment of the utility model in which both the opening break and the closing break of the same-phase multi-break asynchronous operation combination switch are in the closing position;
[0022] Figure 4 It is a schematic diagram of an asynchronous operation combination switch between multiple breaks in the same phase according to an embodiment of the utility model, in which the opening break is in an open state and the closing break is in a closed position;
[0023] Figure 5 It is a schematic diagram of an embodiment of the utility model in which the opening break and the vacuum closing break of the same-phase multi-break asynchronous operation combination switch are both in the open position. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] The utility model provides a same-phase multi-break asynchronous operation combination switch, which is a three-phase combination switch. Each phase of the combination switch is composed of an opening break group and a closing break group connected in series. The opening break group is composed of one or more opening breaks, and the closing break group is composed of one or more closing breaks. The switch breaks within the opening break group and the closing break group are synchronously operated, and the switch breaks between the opening break group and the closing break group are asynchronously operated.
[0026] When the combination switch is closed, the opening break group is closed first, and after a preset time T1, the closing break group is closed.
[0027] When the combination switch is opened, the opening break group is disconnected first, and after a preset time T2, the closing break group is disconnected.
[0028] Figure 3 This is a schematic diagram of an embodiment of the utility model in which both the opening break and the closing break of the same-phase multi-break asynchronous operation combination switch are in the closed position. Figure 4 This is a schematic diagram of an asynchronous operation combination switch between multiple breaks in the same phase according to an embodiment of the utility model, in which the opening break is in the open state and the closing break is in the closed position. Figure 5 This is a schematic diagram of a same-phase multi-break asynchronous operation combination switch in an embodiment of the utility model, in which both the opening break and the vacuum closing break are in the open position. Figure 3 to Figure 5 As shown, this embodiment is described by taking the example that both the breaking break group and the closing break group include only one break, one phase of the combination switch includes an operating mechanism 1, a ground support insulator 2, an insulating operating rod 3, a mechanical transmission pin 4, a mechanical transmission pin slide 5, an upper outlet terminal 9, a lower outlet terminal 16, a breaking break 11, a closing break 17, a mechanical transmission box 19 and a main operating shaft 20, the breaking break 11 includes a breaking break operating rod 6, a breaking break moving contact 7, a breaking break static contact 8 and a breaking break support insulator 10, the closing break 17 includes a closing break operating arm 12, a closing break operating rod 13, a closing break moving contact 14, a closing break static contact 15 and a closing break support insulator 18,
[0029] The main operating shaft 20 is located inside the operating mechanism 1 and is connected to the lower end of the insulating operating rod 3. The operating mechanism 1 drives the main operating shaft 20 to rotate and drives the insulating operating rod 3 to move up and down.
[0030] The ground support insulator 2 is arranged between the operating mechanism 1 and the mechanical transmission box 19, and the breaking support insulator 10 is arranged between the upper outlet terminal 9 and the mechanical transmission box 19.
[0031] The upper end of the insulating operating rod 3 is connected to the mechanical transmission pin 4. The mechanical transmission pin slide groove 5 is arranged on the breaking operation rod 6. The mechanical transmission pin 4 can slide up and down along the mechanical transmission pin slide groove 5.
[0032] The breaking break moving contact 7 is connected to the upper end of the breaking break operating rod 6, and the breaking break static contact 8 is connected to the upper outlet terminal 9. The breaking break operating rod 6 drives the breaking break moving contact 7 to move up and down, so that the breaking break moving contact 7 and the breaking break static contact 8 are in contact or separated.
[0033] The two ends of the closing break operating arm 12 are respectively connected to the mechanical transmission pin 4 and the closing break operating rod 13, the other end of the closing break operating rod 13 is connected to the closing break moving contact 14, and the closing break static contact 15 is connected to the lower outlet terminal 16. The closing break operating rod 13 drives the closing break moving contact 14 to move left and right, so that the closing break moving contact 14 and the closing break static contact 15 are in contact or separated.
[0034] In this embodiment, the arc extinguishing medium used for opening the break 11 is SF6 gas, and the arc extinguishing medium used for closing the break 17 is vacuum.
[0035] In an embodiment of the present invention, the lengths of the preset time T1 and the preset time T2 are controlled by mechanical control or electrical signals, and the preset time T1 and the preset time T2 may be the same or different.
[0036] When the combination switch is in Figure 3 The closed static state is displayed. When the switch starts to open, the insulating operating rod 3 will directly drive the breaking operation rod 6 to move downward, and the breaking operation rod 6 will pull the breaking moving contact 7 to move downward, thereby disengaging the breaking static contact 8, and realizing the separation of the breaking 11; at this time, the mechanical transmission pin slide 5 on the breaking operation rod 6 moves downward, and the mechanical transmission pin 4 slides along the mechanical transmission pin slide 5 and remains stationary, and the closing moving contact 14 also remains stationary, so that the vacuum closing breaker 17 is still in the closed position. At this time, the state of the combination switch is as follows: Figure 4 In this way, the circuit current can be disconnected by utilizing the process in which the breaking point 11 has been separated.
[0037] When the insulating operating rod 3 continues to drive the breaking operation rod 6 to move downward, the breaking operation rod 6 pulls the breaking moving contact 7 to continue to move downward. At this time, the mechanical transmission pin slide slot 5 on the breaking operation rod 6 has slid to the end, and it will drive the mechanical transmission pin 4 to move downward, thereby driving the closing operation rod 13 to pull the closing moving contact 14 to the left and separate the closing static contact 15 through the closing operation arm 12, so as to realize the opening of the vacuum closing break 17. At this time, since the circuit current of the opening process has been broken by the breaking break 11 that was opened in advance, there is no current in the opening of the closing break 17. Therefore, the opening process of the combination switch only burns the SF6 breaking break 11.
[0038] On the contrary, when the combination switch is closed, the opening break 11 is closed first, and the closing break 17 is not closed at this time, so there is no current; when the mechanical transmission pin slide slot 5 on the opening break operating rod 6 has slid to the end, it will push the mechanical transmission pin 4 to move upward, thereby driving the closing break operating rod 13 to move rightward through the closing break operating arm 12 to push the closing break moving contact 14 and the closing break static contact 15 to close, so as to achieve the closing of the closing break 17. At this time, the circuit is connected and current will flow. Therefore, the closing process of the combination switch only burns the closing break 17.
[0039] In the working process of the asynchronous operation combination switch between multiple breaks in the same phase provided by the utility model, only one break is burned in the opening process and the closing process respectively, which will greatly prolong the service life of the switch.
[0040] Those skilled in the art can understand that the accompanying drawings are only schematic diagrams of an embodiment, and the modules or processes in the accompanying drawings are not necessarily necessary for implementing the present utility model.
[0041] Those skilled in the art can understand that the modules in the device in the embodiment can be distributed in the device in the embodiment according to the description of the embodiment, or can be changed accordingly and located in one or more devices different from the embodiment. The modules in the above embodiment can be combined into one module, or can be further divided into multiple sub-modules.
[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A same-phase multi-break asynchronous operation combination switch, characterized in that: The combination switch is a three-phase combination switch. Each phase of the combination switch is composed of an opening break group and a closing break group in series. The opening break group consists of one or more opening breaks, and the closing break group consists of one or more closing breaks. The switch breaks within the opening break group and the closing break group are synchronously operated, and the switch breaks between the opening break group and the closing break group are asynchronously operated. When the combination switch is closed, the opening break group is closed first, and after a preset time T1, the closing break group is closed. When the combination switch is opened, the opening break group is disconnected first, and after a preset time T2, the closing break group is disconnected.
2. The same-phase multi-break asynchronous operation combination switch according to claim 1, characterized in that: One phase of the combination switch includes an operating mechanism, a ground supporting insulator, an insulating operating rod, a mechanical transmission pin, a mechanical transmission pin slide, an upper outlet terminal, a lower outlet terminal, an opening break, a closing break, a mechanical transmission box and a main operating shaft. The opening break includes an opening break operating rod, an opening break moving contact, an opening break static contact and an opening break supporting insulator. The closing break includes a closing break operating arm, a closing break operating rod, a closing break moving contact, a closing break static contact and a closing break supporting insulator. The main operating shaft is located inside the operating mechanism. The main operating shaft is connected to the lower end of the insulating operating rod. The operating mechanism drives the main operating shaft to rotate and drives the insulating operating rod to move up and down. The ground support insulator is set between the operating mechanism and the mechanical transmission box, and the breaking support insulator is set between the upper outlet terminal and the mechanical transmission box. The upper end of the insulating operating rod is connected to the mechanical transmission pin. The mechanical transmission pin slide groove is set on the breaking fracture operating rod. The mechanical transmission pin can slide up and down along the mechanical transmission pin slide groove. The breaking break moving contact is connected to the upper end of the breaking break operating rod, and the breaking break static contact is connected to the upper outlet terminal. The breaking break operating rod drives the breaking break moving contact to move up and down, so that the breaking break moving contact and the breaking break static contact are in contact or separated. The two ends of the closing break operating arm are respectively connected to the mechanical transmission pin and the closing break operating rod, the other end of the closing break operating rod is connected to the closing break moving contact, the closing break static contact is connected to the lower outlet terminal, and the closing break operating rod drives the closing break moving contact to move left and right, so that the closing break moving contact and the closing break static contact are in contact or separated.
3. The same-phase multi-break asynchronous operation combination switch according to claim 1, characterized in that: The arc extinguishing medium used for opening and closing the break is any one of the following: SF6 gas, vacuum and compressed air.
4. The same-phase multi-break asynchronous operation combination switch according to claim 1, characterized in that: The time lengths of the preset time T1 and the preset time T2 are controlled by mechanical control or electrical signal control.