Isolating switch
By designing a compact layout in the isolating switch and an improved auxiliary switch triggering method, the problem of poor dispersion and disconnection performance of the existing isolating switch structure is solved, and higher current carrying capacity and arc extinguishing effect are achieved.
Patent Information
- Application Number
- CN202422321513.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-23
AI Technical Summary
The internal structure of the existing isolating switch is scattered, with large volume, poor breaking performance, and the auxiliary switch triggering is insensitive and easy to get stuck, making it difficult to meet the performance requirements in high voltage environments.
An isolating switch is designed, including a control module and a contact module. The shaft drives the driving contacts to rotate to achieve a closing or opening state. The auxiliary switch group is superimposed on the side of the shaft. The auxiliary switch group is triggered to display the state through the rotation of the shaft. At the same time, a compact arc extinguishing chamber is laid in a limited space to improve the breaking performance and arc extinguishing ability.
The overall layout of the isolating switch is achieved by a more compact overall layout, the arc extinguishing chamber is more effective, the breaking performance and the reliability of the auxiliary switch are improved, and the ability to withstand greater current flow.
Smart Images
Figure CN223155900U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of low-voltage electrical appliances, and specifically relates to a disconnector. Background Art
[0002] A disconnector is a switching device. When the disconnector is in the off position, there is an insulation distance that meets the specified requirements and an obvious disconnection mark between the contacts; when in the on position, it is a switching device that can carry the current under normal circuit conditions and the current under abnormal conditions (such as short circuit) within a specified time.
[0003] With the improvement of product performance indicators, taking the DC operating environment as an example, the rated operating voltage has been increased to DC1500V, and the requirements for product performance grades are getting higher and higher. However, the internal structure layout of the existing disconnectors is scattered, the volume is large, the breaking performance is poor, the triggering of the auxiliary switch is not sensitive, and it is easy to get stuck. Summary of the Utility Model
[0004] The purpose of the utility model is to address the above-mentioned defects of the existing disconnector, such as the scattered internal structure layout, large volume, poor breaking performance, insensitive triggering of the auxiliary switch, and easy jamming. A disconnector is provided, with a more compact overall layout. The arc extinguishing chamber can more effectively extinguish the arc within the limited space layout, improving the breaking performance of the disconnector, and thus being able to withstand a larger current flow. At the same time, the triggering method of the auxiliary switch is improved, enhancing the reliability of the auxiliary switch.
[0005] Technical Solution
[0006] To achieve the above technical purpose, the utility model provides a disconnector, which includes a control module and a contact module. The rotating shaft in the control module can drive the moving contact in the contact module to rotate. During the rotation of the moving contact, it can contact and disengage from the static contact, thereby putting the main circuit of the disconnector in the on or off state. It is characterized in that: a number of auxiliary switch groups are arranged in an overlapping manner beside the rotating shaft in the control module. During the rotation of the rotating shaft, it can trigger the corresponding auxiliary switch group to display the corresponding state of the disconnector.
[0007] In some solutions, the number of auxiliary switch groups is symmetrically arranged on both sides of the rotating shaft.
[0008] In some solutions, the control module includes a control module housing. The rotating shaft is installed in the control module housing and can rotate. A linkage protrusion is provided on the outer surface of the rotating shaft. During the rotation of the rotating shaft, it can drive the push rod to move through the linkage protrusion, and during the movement of the push rod, it can trigger the auxiliary switch group on the corresponding side.
[0009] In some solutions, the push rod is connected with a return spring, and after the linkage protrusion leaves the push rod, the return spring provides a return force to the push rod to make it leave the auxiliary switch group on the corresponding side.
[0010] In some solutions, the push rod is installed in the control module housing and can move in the chute in the control module housing.
[0011] In some solutions, the linkage protrusion is a triangular linkage protrusion.
[0012] In some solutions, the return spring is placed on one side of the push rod opposite to the linkage protrusion. The return spring is located in the spring installation groove of the control module housing, with one end abutting against the push rod and the other end abutting against the groove wall of the spring installation groove.
[0013] In some solutions, one end of the return spring is sleeved on the convex column of the push rod.
[0014] In some solutions, the side surface of the push rod corresponding to the linkage protrusion is a plane.
[0015] In some solutions, for each side of the several auxiliary switch groups symmetrically stacked on both sides of the rotating shaft, there are 2 auxiliary switches on one side.
[0016] In some solutions, one end of the rotating shaft extends out of the control module housing and is connected to the operating handle, and the other end is connected to the moving contact rotating shaft in the contact module through a turntable to drive the moving contact in linkage. Below the several auxiliary switch groups in the control module housing, there is also an energy storage spring group. During the rotation of the rotating shaft, the energy storage spring group can be driven to store energy.
[0017] In some solutions, an arc extinguishing chamber is arranged on the outer side of the rotation trajectory of the moving contact in the contact module.
[0018] In some solutions, the arc extinguishing chamber includes several arc extinguishing grid sheets. Both ends of the several arc extinguishing grid sheets are installed on a pair of side plates. The whole formed by the several arc extinguishing grids and the pair of side plates is installed on the arc extinguishing cover. On the rear side surface of the arc extinguishing cover facing away from the moving contact rotating shaft, there is a permanent magnet installation groove one, and the permanent magnet one is installed in the permanent magnet installation groove one.
[0019] In some solutions, one end of both ends of the several arc extinguishing grid sheets is installed on the corresponding side plate and protrudes above one side surface of the arc extinguishing cover.
[0020] In some solutions, the several arc extinguishing grid sheets are arranged in a fan shape, and the center of the fan faces the side of the moving contact rotating shaft.
[0021] In some solutions, the pair of side plates are insulating parts.
[0022] In some solutions, a first recessed groove is provided on one side of a plurality of arc extinguishing grid plates close to the rotating shaft of the moving contact, and a second recessed groove is provided on the other side of the plurality of arc extinguishing grid plates away from the rotating shaft of the moving contact.
[0023] In some solutions, the arc extinguishing chamber includes a plurality of arc extinguishing grid plates. Both ends of the plurality of arc extinguishing grid plates are installed on a pair of side plates. The whole formed by the plurality of arc extinguishing grid plates and the pair of side plates is installed in an arc extinguishing cover. A first permanent magnet installation groove is provided on at least one outer side surface of the arc extinguishing cover corresponding to the pair of side plates, and a second permanent magnet is installed in the first permanent magnet installation groove.
[0024] In some solutions, a second recessed groove is formed on one side of the plurality of arc extinguishing grid plates facing the rotating shaft of the moving contact.
[0025] Beneficial effects
[0026] An isolating switch provided by the present utility model includes a control module and a contact module. A rotating shaft in the control module can drive a moving contact in the contact module to rotate. During the rotation of the moving contact, it can contact and separate from a static contact, so that the main circuit of the isolating switch is in a closed or open state. A plurality of auxiliary switch groups are arranged in an overlapping manner beside the rotating shaft in the control module. During the rotation of the rotating shaft, it can trigger the corresponding auxiliary switch groups to display the corresponding state of the isolating switch. The overall layout of the isolating switch is more compact. The arc extinguishing chamber can more effectively extinguish the arc within the limited space layout, improving the breaking performance of the isolating switch, and thus being able to withstand a larger current flow. At the same time, the triggering mode of the auxiliary switch is improved, enhancing the reliability of the auxiliary switch. Description of the drawings
[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.
[0028] Att Figure 1 is a three-dimensional view of the product of Embodiment 1 of the present utility model.
[0029] Att Figure 2 is a schematic internal structure diagram of Embodiment 1 of the present utility model.
[0030] Att Figure 3a is a schematic structural diagram of the control module in Embodiment 1 of the present utility model Figure 1 .
[0031] Att Figure 3b is a schematic structural diagram of the control module in Embodiment 1 of the present utility model Figure 1。
[0032] Attached Figure 4 is a schematic diagram of the contact module structure in Embodiment 1 of the present utility model Figure 1 。
[0033] Attached Figure 5 is a schematic diagram of the arc extinguishing chamber in Embodiment 1 of the present utility model.
[0034] Attached Figure 6 is a schematic exploded view of the arc extinguishing chamber in Embodiment 1 of the present utility model.
[0035] Attached Figure 7 is a schematic diagram of the arc extinguishing chamber in Embodiment 2 of the present utility model.
[0036] Attached Figure 8 is a schematic exploded view of the arc extinguishing chamber in Embodiment 2 of the present utility model. Detailed implementation manners
[0037] To make the objectives, technical solutions and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application without creative efforts shall fall within the scope of protection of this application.
[0038] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the description of this application are only for the purpose of illustration and do not represent the only implementation manner.
[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.
[0040] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, the first feature being "above", "over" or "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or it only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" or "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or it only indicates that the horizontal height of the first feature is less than that of the second feature.
[0041] Unless otherwise defined, all technical and scientific terms used in the description of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the description of this application includes any and all combinations of one or more of the related listed items.
[0042] Embodiment 1
[0043] As shown in the attached Figure 1 and 2 shown, a disconnecting switch includes a control module 1 and a contact module 2. The rotating shaft 101 in the control module 1 can drive the moving contact 201 in the contact module 2 to rotate. During the rotation of the moving contact 201, it can contact and disengage from the static contact 204, so that the main circuit of the disconnecting switch is in the closed or open state. As shown in the attached Figure 3a shown, several auxiliary switch groups 102 are superimposed and arranged beside the rotating shaft 101 in the control module 1. During the rotation of the rotating shaft 101, it can trigger the corresponding auxiliary switch groups 102 to display the corresponding state of the disconnecting switch. One end of the rotating shaft 101 extends out of the control module housing 103 and is connected to the operating handle 106, and the other end is connected to the moving contact rotating shaft 203 in the contact module 2 through a turntable 107 to drive the moving contact 201 in a linkage manner. A energy storage spring group 108 is also provided below the several auxiliary switch groups 102 in the control module housing 103. During the rotation of the rotating shaft 101, it can drive the energy storage spring group 108 to store energy. As shown in the attached Figure 3b shown, specifically, the rotating shaft 101 is connected to the convex column 110a on the sliding plate 110 through the linkage groove 109a on the disc 109 provided thereon. The rotation of the rotating shaft 101 can drive the sliding plate 110 to move linearly. The lug on the sliding plate 110 drives the turntable 107 to rotate, and the turntable 107 further compresses the energy storage spring group 108 to store energy. When the turntable 107 rotates past the dead point, the turntable 107 continues to rotate under the action of the energy release of the energy storage spring group 108, and the continuous rotation of the turntable 107 drives the moving contact 201 and the static contact 204 to close.
[0044] As shown in the appendix Figure 3a As shown, the control module 1 includes a control module housing 103. A rotating shaft 101 is installed inside the control module housing 103 and can rotate. A linkage protrusion 101a is provided on the outer surface of the rotating shaft 101. In this embodiment, the linkage protrusion 101a is a triangular linkage protrusion. During the rotation of the rotating shaft 101, the linkage protrusion 101a can drive the push rod 104 to move. The side surface of the push rod 104 corresponding to the linkage protrusion 101a is preferably a plane. This linkage structure directly uses the linkage protrusion 101a to convert the rotation of the rotating shaft into the linear motion of the push rod, reducing the volume of the control module along the axial direction of the rotating shaft, and at the same time, the motion transmission is simple and stable. The push rod 104 is installed inside the control module housing 103 and can move in a chute 103a inside the control module housing 103. During the movement of the push rod 104, it can trigger the auxiliary switch group 102 on the corresponding side. The several auxiliary switch groups 102 are symmetrically arranged on both sides of the rotating shaft 101. Preferably, there are 2 auxiliary switches on each side among the several auxiliary switch groups 102 symmetrically stacked on both sides of the rotating shaft 101. The corresponding push rods 104 are also correspondingly arranged, and the corresponding linkage protrusions 101a are also symmetrically arranged in 2. In this embodiment, 2 auxiliary switches are symmetrically stacked on both sides of the rotating shaft 101, so that no matter which direction the rotating shaft rotates, it can trigger the contact signal 102a of the auxiliary switch. Thus, the corresponding state of the disconnecting switch is realized, that is, the on and off signals of the disconnecting switch circuit, as well as the remote signal transmission and the state of multiple identical signal transmissions.
[0045] The push rod 104 is connected with a return spring 105. After the linkage protrusion 101a leaves the push rod 104, the return spring 105 provides a return force to the push rod 104 to make it leave the auxiliary switch group 102 on the corresponding side. Specifically, the return spring 105 is placed on one side of the push rod 104 and is opposite to the linkage protrusion 101a. The return spring 105 is located in a spring installation groove 103b of the control module housing 103, with one end abutting against the push rod 104 and the other end abutting against the groove wall of the spring installation groove 103b. In this embodiment, one end of the return spring 105 is sleeved on a convex column 104a of the push rod 104.
[0046] As shown in the appendix Figure 4 As shown, an arc extinguishing chamber 202 is arranged outside the rotation trajectory of the moving contact 201 in the contact module 2. As shown in the appendix Figure 5 and 6As shown, the arc extinguishing chamber 202 includes a plurality of arc extinguishing grids 202a, both side ends of the plurality of arc extinguishing grids 202a are mounted on a pair of side plates 202b, the plurality of arc extinguishing grids 202a and the pair of side plates 202b are assembled as a whole and mounted on an arc extinguishing cover 202c, and the plurality of arc extinguishing grids 202a are arranged in a fan-shaped arrangement, with the center of the fan-shaped arrangement facing the rotating shaft 101. A recessed groove 1 202a01 is provided on the side of the plurality of arc extinguishing grids 202a close to the moving contact rotating shaft 203, and a recessed groove 202a02 is provided on the side of the plurality of arc extinguishing grids 202a away from the moving contact rotating shaft 203. A permanent magnet mounting groove 1 202c01 is provided on the rear side of the arc extinguishing cover 202c away from the rotating shaft 101, and a permanent magnet 1 202d is mounted in the permanent magnet mounting groove 1 202c01. One of the two side ends of the plurality of arc extinguishing grids 202a is mounted on the corresponding side plate 202b and is higher than one side of the arc extinguishing cover 202c. In this embodiment, the pair of side plates 202b are insulating members. The permanent magnet 202d is mounted on the rear side of the arc extinguishing cover, which is different from being placed in the arc extinguishing chamber in the prior art, and further blows the arc magnetism into the arc extinguishing chamber, thereby improving the arc extinguishing capacity of the arc extinguishing chamber.
[0047] Example 2
[0048] As attached Figure 7 and 8 As shown, the arc extinguishing chamber 202 includes a plurality of arc extinguishing grids 202a, both side ends of the plurality of arc extinguishing grids 202a are mounted on a pair of side plates 202b, the plurality of arc extinguishing grids 202a and the pair of side plates 202b are assembled as a whole and are mounted in an arc extinguishing cover 202c, and a second permanent magnet mounting groove 202c02 is provided on the outer side surface of at least one side of the arc extinguishing cover 202c corresponding to the pair of side plates 202b, and a second permanent magnet 202d' is mounted in the second permanent magnet mounting groove 202c02. A second concave groove 202a02 is provided on one side of the plurality of arc extinguishing grids 202a facing the moving contact shaft 203. The other structures are the same as those in Example 1.
[0049] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0050] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.
Claims
1. An isolating switch, which comprises a control module (1) and a contact module (2). A rotating shaft (101) in the control module (1) can drive a moving contact (201) in the contact module (2) to rotate. During the rotation of the moving contact (201), it can contact and disengage from a static contact (204), so that the main circuit of the isolating switch is in the closed or open state. It is characterized in that: A number of auxiliary switch groups (102) are arranged in an overlapping manner beside the rotating shaft (101) in the control module (1). During the rotation of the rotating shaft (101), the corresponding auxiliary switch group (102) can be triggered to display the corresponding state of the disconnector.
2. The disconnector according to claim 1, characterized in that: The number of auxiliary switch groups (102) are symmetrically arranged on both sides of the rotating shaft (101).
3. The disconnector according to claim 1, characterized in that: The control module (1) includes a control module housing (103). The rotating shaft (101) is installed in the control module housing (103) and can rotate. A linkage protrusion (101a) is provided on the outer surface of the rotating shaft (101). During the rotation of the rotating shaft (101), the push rod (104) can be driven to move through the linkage protrusion (101a). During the movement of the push rod (104), the corresponding auxiliary switch group (102) on one side can be triggered. The push rod (104) is connected with a return spring (105). After the linkage protrusion (101a) leaves the push rod (104), the return spring (105) provides a return force to the push rod (104) to make it leave the corresponding auxiliary switch group (102).
4. The disconnector according to claim 3, characterized in that: The push rod (104) is installed in the control module housing (103) and can move in a chute (103a) in the control module housing (103).
5. The disconnector according to claim 3, characterized in that: The linkage protrusion (101a) is a triangular linkage protrusion.
6. The disconnector according to claim 3, characterized in that: The return spring (105) is placed on one side of the push rod (104) and is opposite to the linkage protrusion (101a). The return spring (105) is located in a spring installation groove (103b) of the control module housing (103), with one end abutting against the push rod (104) and the other end abutting against the groove wall of the spring installation groove (103b).
7. The disconnector according to claim 3, characterized in that: One end of the return spring (105) is sleeved on a convex column (104a) of the push rod (104).
8. The disconnector according to claim 3, characterized in that: The side surface of the push rod (104) corresponding to the linkage protrusion (101a) is a plane.
9. The disconnector according to claim 2, characterized in that: Among the number of auxiliary switch groups (102) symmetrically arranged in an overlapping manner on both sides of the rotating shaft (101), there are 2 auxiliary switches on each side.
10. A disconnector as claimed in claim 1, characterized in that: One end of the rotating shaft (101) extends out of the control module housing (103) and is connected to an operating handle (106). The other end is connected to a moving contact rotating shaft (203) in the contact module (2) through a turntable (107) to drive the moving contact (201) in a linkage manner. An energy storage spring group (108) is also provided below the number of auxiliary switch groups (102) in the control module housing (103). During the rotation of the rotating shaft (101), the energy storage spring group (108) can be driven to store energy.
11. The disconnector according to claim 1, characterized in that: An arc extinguishing chamber (202) is arranged outside the rotation trajectory of the moving contact (201) in the contact module (2).
12. The disconnector according to claim 11, characterized in that: The arc extinguishing chamber (202) includes a plurality of arc extinguishing grid plates (202a). Both ends of the plurality of arc extinguishing grid plates (202a) are mounted on a pair of side plates (202b). The whole formed by the plurality of arc extinguishing grid plates (202a) and the pair of side plates (202b) is mounted on an arc extinguishing cover (202c). A first permanent magnet mounting groove (202c01) is provided on the rear side of the arc extinguishing cover (202c) facing away from the rotating shaft (101), and a first permanent magnet (202d) is mounted in the first permanent magnet mounting groove (202c01); One end of both ends of the plurality of arc extinguishing grid plates (202a) is mounted on the corresponding side plate (202b) and protrudes from one side surface of the arc extinguishing cover (202c); The plurality of arc extinguishing grid plates (202a) are arranged in a fan shape, and the center of the fan shape faces the side of the moving contact rotating shaft (203); The pair of side plates (202b) are insulating parts; A first recessed groove (202a01) is provided on one side of the plurality of arc extinguishing grid plates (202a) close to the moving contact rotating shaft (203), and a second recessed groove (202a02) is provided on the side of the plurality of arc extinguishing grid plates (202a) facing away from the moving contact rotating shaft (203); Or: The arc extinguishing chamber (202) includes a plurality of arc extinguishing grid plates (202a). Both ends of the plurality of arc extinguishing grid plates (202a) are mounted on a pair of side plates (202b). The whole formed by the plurality of arc extinguishing grid plates (202a) and the pair of side plates (202b) is mounted inside an arc extinguishing cover (202c). A second permanent magnet mounting groove (202c02) is provided on at least one outer side surface of the arc extinguishing cover (202c) corresponding to the pair of side plates (202b), and a second permanent magnet (202d') is mounted in the second permanent magnet mounting groove (202c02). A second recessed groove (202a02) is formed on one side of the plurality of arc extinguishing grid plates (202a) facing the moving contact rotating shaft (203).