Moving contact disc of isolating switch and isolating switch
By setting arc-induced angles and reeds on the moving contact disc of the isolating switch, the problem of insufficient arc-induced ability of the moving contact plate in the prior art is solved, and better arc-induced and arc-extinguishing effects are achieved, and the operation reliability of the equipment is improved.
Patent Information
- Application Number
- CN202422408377.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The dynamic contacts of the existing rotary isolating switches use rigid parts to provide clamping force, and the arc-induced ability is not ideal.
A moving contact disc of an isolating switch is designed, including a contact disc structural member, the first and second moving contacts. The arc-induced angle is set on the moving contacts, and the arc-induced angle extends away from the entry side. The clamping force is provided in combination with the reed to form an initial gap and an arc-extinguishing channel to improve the arc-induced effect.
It significantly improves the arc-induced capability of the moving contacts, enhances the arc extinguishing performance, ensures that the arc can be effectively introduced into other structures of the isolating switch, and improves the operating reliability of the equipment.
Smart Images
Figure CN223140612U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to a disconnector, especially the moving contact disc of the disconnector. Background Art
[0002] At present, there are two forms of moving contacts of the rotary disconnector. One is that the moving contact piece itself has elasticity and uses its own elasticity to clamp the static contact; the other is that the moving contact piece is a relatively rigid component, and a spring piece is additionally provided to provide the clamping force.
[0003] For the existing moving contact piece that adopts a relatively rigid component and needs to add a spring piece to provide the clamping force for the moving contact, its arc ignition ability is not ideal. Therefore, how to improve it is a direction worthy of research. Summary of the Invention
[0004] In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art, and aims to provide a moving contact disc of a disconnector and a disconnector, which have a better arc ignition effect.
[0005] The utility model provides a moving contact disc of a disconnector, which includes a contact disc structural member, a first moving contact, a second moving contact and at least one spring piece; the contact disc structural member has a contact installation space, and the first moving contact and the second moving contact are stacked in the contact installation space; both ends of the first moving contact and the second moving contact in the length direction are used for clamping the static contact, and a butting protrusion is arranged on the first moving contact and / or the second moving contact, so that an initial gap allowing the static contact to enter is formed between the first moving contact and the second moving contact; the spring piece is arranged on one side of the first moving contact or the second moving contact to provide a clamping force for clamping the static contact by the first moving contact and the second moving contact; wherein, the first moving contact and the second moving contact have an entry side for the static contact to enter, and an arc ignition angle is extendedly arranged on the first moving contact or the second moving contact, and the arc ignition angle extends in a direction away from the entry side.
[0006] In some embodiments of the present application, in the stacking direction of the first moving contact and the second moving contact, the arc ignition angle bends towards the center direction of the initial gap or exceeds the center line of the initial gap.
[0007] In some embodiments of the present application, the entry sides of the first moving contact and the second moving contact are linear, and the included angle formed between the connection line from the imaginary rotation center of the moving contact disc to the sharp corner position of the arc ignition angle and the entry side is α, and 15° < α < 45°.
[0008] In some embodiments of the present application, there are two reed pieces, one abuts against one side of the first moving contact away from the second moving contact, and the other abuts against one side of the second moving contact away from the first moving contact; limiting protrusions or limiting grooves are also provided on the first moving contact and the second moving contact to facilitate the abutment of the reed pieces.
[0009] In some embodiments of the present application, the contact disk structural member includes a contact disk cover and a contact disk base. The contact head installation space is jointly formed by the contact disk cover and the contact disk base, and the contact disk cover and the contact disk base are detachably fixed; a linkage column is provided on the contact disk base, and avoidance through holes for the linkage column to pass through are provided on the first moving contact, the second moving contact, and the reed pieces.
[0010] In some embodiments of the present application, the contact disk structural member includes a contact disk cover and a contact disk base. The contact head installation space is jointly formed by the contact disk cover and the contact disk base, and the contact disk cover and the contact disk base are detachably fixed; the contact disk cover and the contact disk base also jointly form two arc extinguishing channels for the static contact head to enter, and each arc extinguishing channel corresponds to one end in the length direction of the first moving contact and the second moving contact.
[0011] In some embodiments of the present application, each arc extinguishing channel has an installation opening, which is opened on the contact disk cover or / and the contact disk base, and the installation opening is communicated with the arc extinguishing channel to facilitate the installation of the static contact head through the installation opening.
[0012] In some embodiments of the present application, at least one of the contact disk base and the contact disk cover is made of a gas-generating material.
[0013] An isolating switch includes an operating unit layer and a switch unit layer; wherein, two static contact heads and the moving contact disk of the above-mentioned isolating switch are arranged in the switch unit layer.
[0014] An isolating switch includes an operating unit layer and a switch unit layer; wherein, two static contact heads and the moving contact disk of the above-mentioned isolating switch are arranged in the switch unit layer; the static contact head and the moving contact disk have a closed position and an open position; the angle required for the moving contact disk to rotate from the open position to the closed position is A; after the static contact head is placed into the arc extinguishing channel through the installation opening, the angle required for the moving contact disk to rotate to the closed position is B, and B is greater than A.
[0015] Advantages of the present application compared with the prior art:
[0016] By providing an arc guiding angle on the first moving contact or the second moving contact, and using the arc guiding angle to extend in the direction away from the entry side, as the moving contact disk rotates, the arc during breaking can be introduced into other structures of the isolating switch (such as the arc extinguishing chamber) by the arc guiding angle, greatly improving the arc guiding effect and increasing the arc extinguishing performance. Description of the Drawings
[0017] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show certain 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, without creative efforts, other relevant accompanying drawings can also be obtained based on these drawings.
[0018] Figure 1 Shows a schematic diagram of the disconnector in the embodiment of the present utility model;
[0019] Figure 2 Shows a schematic diagram of the switch unit layer in the embodiment of the present utility model;
[0020] Figure 3 Shows a schematic diagram of the moving contact disk and the static contact in the open position in the embodiment of the present utility model;
[0021] Figure 4 Shows a schematic diagram of the static contact just inserted into the installation opening in the embodiment of the present utility model;
[0022] Figure 5 Shows a schematic diagram of the moving contact disk in the embodiment of the present utility model;
[0023] Figure 6 Shows a schematic diagram of the moving contact disk with the contact disk cover removed in the embodiment of the present utility model;
[0024] Figure 7 Shows a schematic diagram of two moving contacts stacked in the embodiment of the present utility model;
[0025] Figure 8 Shows a schematic diagram of one of the moving contacts in the embodiment of the present utility model. Detailed implementation manners
[0026] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.
[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed 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 one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.
[0029] In the present utility model, unless otherwise clearly specified and defined, the terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0030] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature. Embodiment
[0031] As Figure 1-8 shown, an embodiment of the present utility model is a disconnecting switch, which includes an operating unit layer 100 and a switch unit layer 200. The operating unit layer 100 is used to drive the switch unit layer 200 so that the switch unit layer 200 realizes connection and disconnection.
[0032] Specifically, the number of switch unit layers 200 is generally more than two, and each switch unit has two static contacts 300 and a moving contact disk 400 inside. Since the two static contacts 300 are distributed beside the moving contact disk 400, and the moving contact disk 400 is rotationally arranged, under the action of the operating unit, the moving contact disk 400 can rotate, enabling the static contact 300 to contact the moving contact to achieve connection and separate to achieve disconnection. Here, when the moving contact disk 400 rotates from connection to disconnection or from disconnection to connection with the static contact 300, the angle rotated by the moving contact disk 400 is A, and A is 90°.
[0033] The specific structure of the above-mentioned moving contact disk 400 includes the following structure;
[0034] The contact disk structural member, which is a plastic part, includes a contact disk cover 401 and a contact disk seat 402. The contact disk cover 401 and the contact disk seat 402 are detachably connected. In this embodiment, snap connection is adopted. A snap hook 4021 is provided on the contact disk seat 402, and a slot 4011 is provided on the contact disk cover 401. The snap hook 4021 and the slot 4011 cooperate with each other to achieve stable assembly. Of course, in addition to this, other methods can also be used to form a detachable connection, such as screw fastening, etc.
[0035] After the contact disk seat 402 and the contact disk cover 401 are properly matched, a contact installation space S100 and two arc extinguishing channels S200 are formed between them. The contact installation space S100 is used to install the first moving contact 403, the second moving contact 404, and the reed 405. The two arc extinguishing channels S200 correspond to the static contacts 300 one by one. When the moving contact disk 400 rotates, the static contact 300 rotates in the arc extinguishing channel S200. The arc extinguishing channel S200 is communicated with the contact installation space S100, so that when the moving contact rotates, the static contact 300 can rotate into (relatively rotate) the position where it cooperates with the moving contact.
[0036] For the arc extinguishing channel S200, it also has an installation opening S300, and the installation opening S300 here is opened on the contact head cover. The installation opening S300 here corresponds one-to-one with the arc extinguishing channel S200, that is, a static contact 300 enters an arc extinguishing channel S200 through an installation opening S300 and corresponds to one end of two moving contacts. Of course, the installation opening S300 here can also be opened on the contact disk seat 402, or can be opened on both the contact disk seat 402 and the contact head cover at the same time. It is worth mentioning that when the static contact 300 is placed into the arc extinguishing channel S200 from the installation opening S300, at this time, the moving contact disk 400 is rotated to the on position, and the angle by which the moving contact disk 400 rotates is B. In this embodiment, the angle of B is 120°. Of course, in addition to this, it can also be other angles, as long as B is greater than A. The reason for using B greater than A here is that it can ensure that once the static contact 300 is installed, during the conversion process of the moving contact disk 400 between on and off, the static contact 300 will have a certain distance from the installation opening S300, avoiding the static contact 300 falling off from the installation opening S300.
[0037] For the moving contact disk 400, the transmission between the moving contact disks 400 is achieved by plugging. Therefore, the moving contact disk 400 has a linkage post 410, and the linkage post 410 here is formed on the contact disk seat 402. The linkage post 410 of the contact head seat passes through the first moving contact 403, the second moving contact 404, the reed 405, and the contact disk cover 401 and extends out from the contact disk cover 401. Avoidance through holes are provided on the first moving contact 403, the second moving contact 404, and the reed 405 to facilitate the passing of the linkage post 410.
[0038] Here, at least one of the contact disk seat 402 and the contact disk cover 401 is made of a gas-generating material, and the gas-generating material is, for example, PA66, PMMA, which are insulating materials that generate gas under the high temperature of the arc gas.
[0039] The first moving contact 403 and the second moving contact 404 are made of a conductive material, and the first moving contact 403 and the second moving contact 404 are stacked in the contact installation space. In order to generate an initial gap S400 between the first moving contact 403 and the second moving contact 404, abutting protrusions 4034 are provided on the first moving contact 403 and the second moving contact 404, and the two groups of abutting protrusions 4034 abut against each other to form the initial gap S400. Of course, in addition to this, the abutting protrusions 4034 can also be provided only on one of the moving contacts, and the corresponding effect can also be achieved.
[0040] The two ends of the first moving contact 403 and the second moving contact 404 in the length direction are respectively used to cooperate with the two static contacts 300. Therefore, there is an entry side L for the first moving contact 403 and the second moving contact 404, and the static contact 300 enters between them from the entry side L. Here, arc ignition angles 4040 are provided on both the first moving contact 403 and the second moving contact 404, but they are respectively arranged at the two ends in the length direction (only one moving contact is provided at each end), and the arc ignition angles 4040 here all extend in the direction away from the corresponding entry side L. Of course, the arc ignition angles 4040 can also be all arranged on the first moving contact 403 or all arranged on the second moving contact 404.
[0041] For the arc ignition angle 4040, it not only extends in the direction away from the entry side L, but it is also a bent structure, bending towards the center direction of the initial gap S400 or exceeding the center line P of the initial gap S400. Doing so can make the arc ignition effect better.
[0042] The entry side L of the above-mentioned first moving contact 403 and second moving contact 404 is linear, and this linear shape can be understood as a straight edge. Taking this straight edge as a reference, the included angle α formed between the connection line F from the imaginary rotation center O of the moving contact disc 400 to the sharp corner position of the arc ignition angle 4040 and the entry side L is such that α is not less than 15°, and the value range of α is 15° < α < 45°.
[0043] There are two reed pieces 405, which are respectively connected to the first moving contact 403 and the second moving contact 404. Specifically, one is abutted on the surface of the first moving contact 403 away from the second moving contact 404, and the other is abutted on the surface of the second moving contact 404 away from the first moving contact 403. Since the initial gap S400 is smaller than the thickness of the static contact 300, the reed pieces 405 can be used to ensure that the moving contact clamps the static contact 300. Here, limit protrusions 4043 or limit grooves are also provided on the first moving contact 403 and the second moving contact 404 to facilitate the abutment of the reed pieces 405.
[0044] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0045] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.
Claims
1. A moving contact disc of a disconnector, characterized in that: It includes a contact disk structure, a first moving contact, a second moving contact, and at least one reed; the contact disk structure has a contact mounting space, and the first moving contact and the second moving contact are stacked in the contact mounting space; both ends of the first moving contact and the second moving contact in the length direction are used for clamping a static contact, and a butting protrusion is provided on the first moving contact and / or the second moving contact, so that an initial gap allowing the static contact to enter is formed between the first moving contact and the second moving contact; the reed is arranged on one side of the first moving contact or the second moving contact and is used to provide a clamping force for clamping the static contact by the first moving contact and the second moving contact; the first moving contact and the second moving contact have an entry side for the static contact to enter, and an arc - guiding angle is extendedly provided on the first moving contact or the second moving contact, and the arc - guiding angle extends in a direction away from the entry side.
2. The moving contact disc of a disconnector according to claim 1, characterized in that: In the stacking direction of the first moving contact and the second moving contact, the arc - guiding angle bends towards the center of the initial gap or exceeds the center line of the initial gap.
3. The moving contact disc of a disconnector according to claim 1, characterized in that: The entry sides of the first moving contact and the second moving contact are linear, and the included angle α formed between the connection line from the imaginary rotation center of the moving contact disk to the sharp - corner position of the arc - guiding angle and the entry side is such that 15° < α < 45°.
4. The moving contact disc of a disconnector according to claim 1, characterized in that: There are two reeds, one butts against the side of the first moving contact away from the second moving contact, and the other butts against the side of the second moving contact away from the first moving contact; limit protrusions or limit grooves are also provided on the first moving contact and the second moving contact to facilitate the butting of the reeds.
5. The moving contact disk of a disconnector according to claim 1, characterized in that: The contact disk structure includes a contact disk cover and a contact disk seat, the contact mounting space is jointly formed by the contact disk cover and the contact disk seat, and the contact disk cover and the contact disk seat are detachably fixed; a linkage post is provided on the contact disk seat, and avoidance through - holes for the linkage post to pass through are provided on the first moving contact, the second moving contact, and the reed.
6. The moving contact disk of a disconnector according to claim 1, characterized in that: The contact disk structure includes a contact disk cover and a contact disk seat, the contact mounting space is jointly formed by the contact disk cover and the contact disk seat, and the contact disk cover and the contact disk seat are detachably fixed; the contact disk cover and the contact disk seat also jointly form two arc - extinguishing channels for the static contact to enter.
7. The moving contact disc of a disconnector according to claim 6, characterized in that: Each arc - extinguishing channel has a mounting port, and the mounting port is opened on the contact disk cover or / and the contact disk seat, and the mounting port is communicated with the arc - extinguishing channel to facilitate the static contact to be loaded through the mounting port.
8. The moving contact disc of a disconnector according to claim 5 or 6 or 7, characterized in that: At least one of the contact disk seat and the contact disk cover is made of gas - generating material.
9. An isolating switch, which includes an operating unit layer and a switching unit layer; characterized in that: Two static contacts and a moving contact disk of an isolating switch as described in any one of claims 1 - 8 are provided in the switch unit layer.
10. An isolating switch, which comprises an operating unit layer and a switching unit layer; characterized in that: Two static contacts and a moving contact disk of an isolating switch as described in claim 7 are provided in the switch unit layer; the static contact and the moving contact disk have a closed position and an open position; the angle required for the moving contact disk to rotate from the open position to the closed position is A; after the static contact is placed into the arc - extinguishing channel through the mounting port, the angle required for the moving contact disk to rotate to the closed position is B, and B is greater than A.