CN114429879B - Isolation static contact and three-station isolation grounding switch - Google Patents
Isolation static contact and three-station isolation grounding switch Download PDFInfo
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- CN114429879B CN114429879B CN202111547690.9A CN202111547690A CN114429879B CN 114429879 B CN114429879 B CN 114429879B CN 202111547690 A CN202111547690 A CN 202111547690A CN 114429879 B CN114429879 B CN 114429879B
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- isolation
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- 238000002955 isolation Methods 0.000 title claims abstract description 57
- 230000003068 static effect Effects 0.000 title claims abstract description 51
- 238000003780 insertion Methods 0.000 claims abstract description 11
- 230000037431 insertion Effects 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 2
- 238000002679 ablation Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 25
- 230000006872 improvement Effects 0.000 description 17
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/003—Earthing switches
Abstract
The invention relates to an isolation static contact and a three-station isolation grounding switch. The isolation static contact comprises a front vertical seat and a rear vertical seat which are arranged at intervals along the front and rear directions, conductive contact fingers are respectively arranged on the opposite inner side walls of the two vertical seats, the conductive contact fingers are used for being in conductive contact with the moving contact, the right ends of the two vertical seats are insertion ends for the insertion of the moving contact, arc striking pieces are respectively arranged at the insertion ends of the two vertical seats, the arc striking pieces are provided with arc sections which are bent leftwards or rightwards, and the arc sections are used for being in contact with the moving contact to realize arc striking. In the bus conversion operation process, before the movable contact is separated from the conductive contact finger of the isolated static contact, the current flows mainly through the conductive contact finger; after the moving contact is separated from the conductive contact finger, a large current is led to the arc striking piece through the arc section, and when the moving contact is separated from the arc section of the arc striking piece, the arc starts to strike, and at the moment, the arc is ablated by the arc striking piece, so that the ablation of the arc to the conductive contact finger can be effectively reduced, and the service life of the isolation static contact is prolonged.
Description
Technical Field
The invention relates to a three-station isolation grounding switch, in particular to an isolation static contact of the three-station isolation grounding switch.
Background
The old station reconstruction and extension of the power grid power transmission and transformation station are increasingly used for the HGIS switch equipment, the three-station switch with the isolated grounding function is an important component part of the HGIS equipment, and the requirements on relevant technical parameters are higher and higher.
At present, the design of the three-station isolation grounding switch at home and abroad is mainly divided into two modes of linear motion and rotary motion of a moving contact. The three-station isolation grounding switch disclosed in Chinese patent document with the publication number of CN201629255U comprises a moving contact, an isolation fixed contact and a grounding fixed contact, wherein the moving contact is driven by a rotating shaft to perform rotating motion. When the movable contact is in conductive contact with the isolation fixed contact, an isolation function is realized; when the moving contact is in conductive contact with the grounding fixed contact, the grounding function is realized; and the moving contact is in an open position when the moving contact is not contacted with the isolation fixed contact and the grounding fixed contact. And the isolation static contact and the grounding static contact are respectively provided with a conductive contact finger for conductive contact with the moving contact.
The common isolating switch has 10V and 160A bus conversion parameters, but with the improvement of product voltage grade and compact requirement on the product structure, the bus conversion parameters of the isolating switch are also improved, and the latest requirement that the bus conversion parameters are 100V and 1600A means that the arc energy is higher, so that the arc is easy to ablate and isolate the conductive contact fingers of the static contact, and the service life of the isolating switch is influenced.
Disclosure of Invention
The invention aims to provide an isolation fixed contact so as to solve the technical problem that when the arc energy is high, the arc is easy to ablate a conductive contact finger of the isolation fixed contact in the prior art; the invention also aims to provide a three-station isolation grounding switch using the isolation static contact.
In order to achieve the above purpose, the technical scheme of the invention for isolating the static contact is as follows:
the isolation static contact comprises a front vertical seat and a rear vertical seat which are arranged at intervals along the front and rear directions, conductive contact fingers are respectively arranged on opposite inner side walls of the two vertical seats and are used for being in conductive contact with a moving contact, the right ends of the two vertical seats are insertion ends for the moving contact to be inserted, arc striking pieces are respectively arranged at the insertion ends of the two vertical seats, the arc striking pieces are provided with arc sections which are bent leftwards or rightwards, and the arc sections are used for being in contact with the moving contact to realize arc striking.
The beneficial effects are that: in the bus conversion operation process, before the movable contact is separated from the conductive contact finger of the isolated static contact, the current flows mainly through the conductive contact finger; after the moving contact is separated from the conductive contact finger, a large current is led to the arc striking piece through the arc section, and when the moving contact is separated from the arc section of the arc striking piece, the arc starts to strike, and at the moment, the arc is ablated by the arc striking piece, so that the ablation of the arc to the conductive contact finger can be effectively reduced, and the service life of the isolation static contact is prolonged.
As a further improvement, the arc segment is arranged at the end of the striking plate.
The beneficial effects are that: the design is not only beneficial to the processing of the arc-shaped section, but also beneficial to the stress deformation of the arc-shaped section.
As a further improvement, the arc striking sheet comprises a plurality of arc striking contact fingers which are arranged at intervals up and down, and the arc striking contact fingers are provided with the arc-shaped sections.
The beneficial effects are that: the design is not only beneficial to the deformation of the arc-shaped section, but also beneficial to the heat dissipation of the arc-shaped section.
As a further improvement, two arc striking sheets are respectively arranged on the two vertical seats, and the two arc striking sheets on the same vertical seat are arranged in the left-right direction.
The beneficial effects are that: by such a design, the through-flow capability can be increased.
As a further improvement, the curved sections of the two striking plates are curved in opposite directions.
The beneficial effects are that, design like this saves installation space, the plug-in and the extraction of the movable contact of being convenient for.
As a further improvement, the striking plate is fixed on the corresponding vertical seat through a screw.
The beneficial effects are that: the design is comparatively convenient for fixing the striking piece, and stability is better, and the dismouting of later stage of being convenient for simultaneously, change.
As a further improvement, the two vertical seats respectively comprise a base and a shielding block fixed on the base through screws, and the shielding block is an arc-resistant block resistant to arc ablation.
The beneficial effects are that: by the design, the shielding block can effectively avoid the uneven spots formed by arc ablation on the surface of the shielding block, and the electric field can be effectively optimized.
As a further improvement, the base is provided with a positioning structure for positioning the shielding block.
The beneficial effects are that: by the design, the position accuracy of the shielding block can be guaranteed.
As a further improvement, the arc striking sheet is of a Z-shaped structure and comprises a fixed section, an overhanging section and a connecting section, wherein the connecting section is connected between the fixed section and the overhanging section, and the arc section is arranged on the overhanging section; the base is provided with a step block, and the step block is provided with a first fixing elevation facing to the right, a second fixing elevation facing away from the conductive contact finger and a fixing plane facing upwards; the shielding block comprises a top cover part buckled on the fixed plane, a first enclosing part positioned on the right side of the first fixed elevation and a second enclosing part buckled on the second fixed elevation; the shielding block and the step block enclose an installation space for installing the arc striking piece, and the fixed section is fixed on the first fixed elevation through a screw.
In order to achieve the purpose, the technical scheme of the three-station isolation grounding switch is as follows:
the three-station isolation grounding switch comprises a shell, wherein a moving contact, an isolation static contact and a grounding static contact are arranged in the shell, the isolation static contact comprises a front vertical seat and a rear vertical seat which are arranged at intervals along the front and rear directions, conductive contact fingers are respectively arranged on opposite inner side walls of the two vertical seats and are used for being in conductive contact with the moving contact, the right ends of the two vertical seats are insertion ends for the moving contact to be inserted, arc striking pieces are respectively arranged at the insertion ends of the two vertical seats, and each arc striking piece is provided with an arc section bent leftwards or rightwards and used for being in contact with the moving contact to realize arc striking.
The beneficial effects are that: in the bus conversion operation process, before the movable contact is separated from the conductive contact finger of the isolated static contact, the current flows mainly through the conductive contact finger; after the moving contact is separated from the conductive contact finger, a large current is led to the arc striking piece through the arc section, and when the moving contact is separated from the arc section of the arc striking piece, the arc starts to strike, and at the moment, the arc is ablated by the arc striking piece, so that the ablation of the arc to the conductive contact finger can be effectively reduced, and the service life of the isolation static contact is prolonged.
As a further improvement, the arc segment is arranged at the end of the striking plate.
The beneficial effects are that: the design is not only beneficial to the processing of the arc-shaped section, but also beneficial to the stress deformation of the arc-shaped section.
As a further improvement, the arc striking sheet comprises a plurality of arc striking contact fingers which are arranged at intervals up and down, and the arc striking contact fingers are provided with the arc-shaped sections.
The beneficial effects are that: the design is not only beneficial to the deformation of the arc-shaped section, but also beneficial to the heat dissipation of the arc-shaped section.
As a further improvement, two arc striking sheets are respectively arranged on the two vertical seats, and the two arc striking sheets on the same vertical seat are arranged in the left-right direction.
The beneficial effects are that: by such a design, the through-flow capability can be increased.
As a further improvement, the curved sections of the two striking plates are curved in opposite directions.
The beneficial effects are that, design like this saves installation space, the plug-in and the extraction of the movable contact of being convenient for.
As a further improvement, the striking plate is fixed on the corresponding vertical seat through a screw.
The beneficial effects are that: the design is comparatively convenient for fixing the striking piece, and stability is better, and the dismouting of later stage of being convenient for simultaneously, change.
As a further improvement, the two vertical seats respectively comprise a base and a shielding block fixed on the base through screws, and the shielding block is an arc-resistant block resistant to arc ablation.
The beneficial effects are that: by the design, the shielding block can effectively avoid the uneven spots formed by arc ablation on the surface of the shielding block, and the electric field can be effectively optimized.
As a further improvement, the base is provided with a positioning structure for positioning the shielding block.
The beneficial effects are that: by the design, the position accuracy of the shielding block can be guaranteed.
As a further improvement, the arc striking sheet is of a Z-shaped structure and comprises a fixed section, an overhanging section and a connecting section, wherein the connecting section is connected between the fixed section and the overhanging section, and the arc section is arranged on the overhanging section; the base is provided with a step block, and the step block is provided with a first fixing elevation facing to the right, a second fixing elevation facing away from the conductive contact finger and a fixing plane facing upwards; the shielding block comprises a top cover part buckled on the fixed plane, a first enclosing part positioned on the right side of the first fixed elevation and a second enclosing part buckled on the second fixed elevation; the shielding block and the step block enclose an installation space for installing the arc striking piece, and the fixed section is fixed on the first fixed elevation through a screw.
Drawings
FIG. 1 is a schematic diagram of a three-position isolation grounding switch according to embodiment 1 of the present invention;
FIG. 2 is a top view of the isolated static contact of FIG. 1;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a schematic diagram of the structure of the removed shielding block of FIG. 3;
FIG. 5 is a schematic view of the structure of FIG. 4 with the watchband contact fingers and strike plates removed;
FIG. 6 is a schematic view of the structure of the striking plate in FIG. 4;
FIG. 7 is a schematic diagram of the shielding block in FIG. 3;
in the figure: 11. a housing; 12. a movable support; 13. a grounding static contact; 14. a moving contact; 15. isolating the static contact; 16. a base; 17. a first screw; 18. conductive contact fingers; 19. a second screw; 20. a shielding block; 21. an arc section; 22. a step block; 23. a first fixed elevation; 24. a third screw; 25. an arc striking piece; 26. a positioning pin; 27. a first threaded hole; 28. a second threaded hole; 29. a third threaded hole; 30. a first pin hole; 31. a fixed section; 32. a connection section; 33. a overhanging section; 34. a third through hole; 35. a second through hole; 36. a first through hole; 37. a second pin hole; 38. a fourth screw; 39. a fifth screw; 40. a top cover portion; 41. a first enclosing portion; 42. and a second enclosing portion.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It is noted that relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" or the like does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, the terms "front," "rear," "upper," "lower," "left," and "right" are based on the orientation and positional relationship shown in the drawings, and are merely for convenience of description of the invention, and do not denote that the device or component in question must have a particular orientation, and thus should not be construed as limiting the invention.
The features and capabilities of the present invention are described in further detail below in connection with the examples.
Embodiment 1 of the three-position isolation grounding switch of the invention:
as shown in fig. 1, the three-station isolation grounding switch comprises a shell 11, wherein a movable support 12 is arranged in the shell 11, the movable support 12 extends along the vertical direction, the upper end of the movable support 12 is fixed at the top of the shell 11, and the lower end of the movable support 12 is connected with a movable contact 14. The shell is also internally provided with a grounding static contact 13 and an isolating static contact 15, wherein the grounding static contact 13 is positioned on the right side of the movable support 12, and the isolating static contact 15 is positioned below the movable support 12. The movable contact 14 is driven to rotate through an insulating torsion bar so as to realize conductive contact with the isolation fixed contact 15 or the grounding fixed contact 13, thereby realizing the isolation and grounding functions.
The direction of the moving contact 14 inserted into the isolation static contact 15 is the left-right direction. As shown in fig. 2 and 3, the isolating static contact 15 includes a front vertical seat and a rear vertical seat which are arranged at intervals along the front-rear direction, and conductive contact fingers 18 are respectively arranged on opposite inner side walls of the two vertical seats, wherein the conductive contact fingers 18 are used for conducting contact with the moving contact 14, preferably, watchband contact finger mounting grooves are processed on the two vertical seats, and the conductive contact fingers 18 are watchband contact fingers. Two watchband contact fingers are arranged on each vertical seat at intervals along the left-right direction, 62 watchband contact fingers are total, and theoretical through flow reaches 4680A.
In this embodiment, the front upright base and the rear upright base are detachably and fixedly connected together by a fourth screw 38, so as to facilitate the processing of the mounting groove of the watch band contact finger. Wherein, the front vertical seat and the rear vertical seat have the same structure and are symmetrically arranged. The front vertical seat and the rear vertical seat are fixedly connected together to form an isolation static contact 15, and the isolation static contact 15 is fixed on other conductors in the shell 11 through a fifth screw 39.
In this embodiment, the right ends of the two vertical seats are insertion ends for inserting the moving contact 14, the insertion ends of the two vertical seats are respectively provided with an arc striking piece 25, the arc striking piece 25 is provided with an arc section 21, and the arc section 21 is used for contacting with the moving contact 14 to realize arc striking, so as to disperse arc energy. Wherein the arc segment 21 is arranged at the end position of the striking plate 25.
Taking the rear vertical seat as an example, as shown in fig. 3 and 5, the rear vertical seat includes a base 16 and a shielding block 20, and the shielding block 20 and a step block 22 enclose an installation space for installing an arc striking plate 25, and the installation space is Z-shaped. The base 16 is provided with a step block 22, and the step block 22 is provided with a first fixing elevation 23 facing to the right, a second fixing elevation facing to the rear and a fixing plane facing upwards; the first fixing elevation 23 is provided with two third threaded holes 29; as shown in fig. 4 and 6, the arc striking plate 25 has a Z-shaped structure, the arc striking plate 25 includes a fixing section 31, an overhanging section 33 and a connecting section 32, the connecting section 32 is connected between the fixing section 31 and the overhanging section 33, two third through holes 34 are provided on the fixing section 31, the third through holes 34 are in one-to-one correspondence with the third threaded holes 29, and the arc striking plate 25 is fixed on the first fixing elevation 23 of the step block 22 through the third screw 24. Wherein the arcuate segment 21 is disposed on the overhanging segment 33.
As shown in fig. 3 and 4, the striking plate 25 includes a plurality of striking fingers arranged at an upper and lower interval, the striking fingers having the above-described arc segments 21. The design is beneficial to the deformation of the arc-shaped section 21 and the heat dissipation of the arc-shaped section 21.
In this embodiment, two arc striking pieces 25 are provided on the rear vertical seat, and the two arc striking pieces 25 are arranged in the left-right direction to increase the through-flow capability. The arc section of the left arc striking plate 25 is bent leftwards, and the arc section 21 of the right arc striking plate 25 is bent rightwards, so that the installation space is saved, and the moving contact 14 is convenient to insert into the isolation static contact 15 and the moving contact 14 is convenient to separate from the isolation static contact 15.
In this embodiment, the fixing sections of the two striking plates 25 are closely arranged, and gaps are left between the connecting sections 32 and the overhanging sections 33 of the two striking plates 25, so that the striking contact finger deforms when receiving the acting force of the moving contact 14.
As shown in fig. 3, 4 and 7, the second fixing elevation is provided with a first threaded hole 27 and the fixing plane is provided with a second threaded hole 28. The shielding block 20 comprises a top cover part 40 buckled on a fixing plane, a first enclosing part 41 positioned on the right side of the first fixing elevation 23 and a second enclosing part 42 buckled on the second fixing elevation, wherein a second through hole 35 is formed in the top cover part, a first through hole 36 is formed in the second enclosing part, the first through hole 36 corresponds to the first threaded hole 27, the second through hole 35 corresponds to the second threaded hole 28, and the shielding block 20 is fixed on the step block 22 through the first screw 17 and the second screw 19. Wherein, the first enclosing part 41 is provided with an avoiding groove for avoiding the head of the third screw 24.
In this embodiment, the shielding block 20 is made of CuW, so that the surface of the shielding block is effectively prevented from being ablated into uneven spots by an arc, and the electric field can be effectively optimized.
In this embodiment, a first pin hole 30 is provided on the base 16, and a positioning pin 26 is installed in the first pin hole 30; the first enclosing part 41 is provided with a second pin hole 37, and the second pin hole 37 is matched with the positioning pin 26 in a positioning way so as to ensure the position accuracy of the shielding block 20. Wherein the locating pin 26 constitutes a locating structure.
As shown in fig. 2, the shielding block 20 is provided with a relief hole for relieving the bolt head of the third screw 24.
In this embodiment, the striking plate 25 is formed by integrally bending a 2mm CuW plate after cutting into a plurality of grid bars at the connecting section 32 and the overhanging section 33. Thus, the elasticity of the striking plate 25 is enhanced, the arc energy can be dispersed, the heat dissipation is facilitated, the ablation resistance is realized, and the function of protecting the conductive contact finger 18 is realized.
In the bus conversion operation process, before the moving contact 14 is separated from the conductive contact finger 18 of the isolation static contact 15, the conductive contact finger 18 is mainly used for flowing, after the moving contact 14 is separated from the conductive contact finger 18, a large current is led to the arc striking plate 25, when the moving contact 14 is separated from the arc section 21 of the arc striking plate 25, the arc starts to strike, at the moment, the arc is ablated to form the arc striking plate, and the material of the arc striking plate is high-temperature resistant, so that the ablation of the arc to the conductive contact finger can be effectively reduced.
According to the three-station isolation grounding switch, the arc striking piece is arranged on the isolation static contact, so that the arc ablation resistance of the isolation static contact is improved, bus conversion parameters are met, and the service life is prolonged.
Embodiment 2 of the three-position isolation grounding switch of the invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the striking plate has a Z-shaped structure, and the arc segment is disposed at the end of the striking plate. In this embodiment, the arc striking piece is a structure of a Chinese character 'ji', and the arc section is arranged at the middle position of the arc striking piece.
Embodiment 3 of the three-position isolation grounding switch of the invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, two arc striking pieces are respectively provided on two vertical seats, and two arc striking pieces on the same vertical seat are arranged in the left-right direction. In this embodiment, two vertical seats are respectively provided with an arc striking plate.
Embodiment 4 of the three-position isolation grounding switch of the invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the curved sections of the two striking plates are curved in opposite directions, i.e., the curved section of the left striking plate is curved to the left and the curved section of the right striking plate is curved to the right. In this embodiment, the curved directions of the arc segments of the two striking plates are the same, that is, the arc segments of the two striking plates are both curved leftwards or the arc segments of the two striking plates are both curved rightwards.
Embodiment 5 of the three-position isolation grounding switch of the invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the striking plate is fixed to the corresponding vertical seat by a screw. In this embodiment, the striking plate is press-fitted to the corresponding vertical seat through the shielding block.
In the embodiment of the isolation static contact of the present invention, the isolation static contact in this embodiment has the same structure as the isolation static contact described in any one of embodiments 1 to 5 of the three-station isolation grounding switch, and will not be described herein.
The above description is only a preferred embodiment of the present invention, and the patent protection scope of the present invention is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The isolation static contact (15) comprises a front vertical seat and a rear vertical seat which are arranged at intervals along the front-rear direction, wherein conductive contact fingers (18) are respectively arranged on the opposite inner side walls of the two vertical seats, the conductive contact fingers (18) are used for being in conductive contact with a moving contact (14), the right ends of the two vertical seats are insertion ends for inserting the moving contact (14), and the isolation static contact is characterized in that arc striking pieces (25) are respectively arranged on the insertion ends of the two vertical seats, the arc striking pieces (25) are provided with arc sections (21) which are bent leftwards or rightwards, and the arc sections (21) are used for being in contact with the moving contact (14) to realize arc striking;
two arc striking pieces (25) are respectively arranged on the two vertical seats, and the two arc striking pieces (25) on the same vertical seat are arranged in the left-right direction;
the bending directions of the arc sections (21) of the two arc striking pieces (25) are opposite.
2. The isolating static contact (15) according to claim 1, characterized in that the arc segment (21) is arranged at the end of an arc striking piece (25).
3. The isolating static contact (15) according to claim 1 or 2, wherein the striking plate (25) comprises a plurality of striking fingers arranged at intervals up and down, the striking fingers having the arc-shaped sections (21).
4. The isolating static contact (15) according to claim 1 or 2, characterized in that the striking plate (25) is fixed on the corresponding vertical seat by means of screws.
5. The isolating static contact (15) according to claim 1 or 2, characterized in that the two vertical seats each comprise a base (16) and a shielding block (20) fixed to the base (16) by means of screws.
6. The isolating static contact (15) according to claim 5, wherein a positioning structure for positioning the shielding block (20) is provided on the base (16).
7. The isolated static contact (15) according to claim 5, wherein the striking plate (25) has a Z-shaped structure, the striking plate (25) comprises a fixed section (31), an overhanging section (33) and a connecting section (32), the connecting section (32) is connected between the fixed section (31) and the overhanging section (33), and the arc section (21) is arranged on the overhanging section (33); the base (16) is provided with a step block (22), and the step block (22) is provided with a first fixing elevation (23) facing to the right, a second fixing elevation facing away from the conductive contact finger (18) and an upward fixing plane; the shielding block (20) comprises a top cover part (40) buckled on a fixed plane, a first enclosing part (41) positioned on the right side of the first fixed elevation (23) and a second enclosing part (42) buckled on the second fixed elevation; the shielding block (20) and the step block (22) enclose an installation space for installing the arc striking sheet, and the fixed section (31) is fixed on the first fixed elevation (23) through screws.
8. Three station isolation earthing switch, including casing (11), be equipped with moving contact (14), isolation static contact (15) and ground connection static contact (13) in casing (11), its characterized in that, isolation static contact (15) are the isolation static contact (15) of any one of preceding claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111547690.9A CN114429879B (en) | 2021-12-16 | 2021-12-16 | Isolation static contact and three-station isolation grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111547690.9A CN114429879B (en) | 2021-12-16 | 2021-12-16 | Isolation static contact and three-station isolation grounding switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114429879A CN114429879A (en) | 2022-05-03 |
| CN114429879B true CN114429879B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111547690.9A Active CN114429879B (en) | 2021-12-16 | 2021-12-16 | Isolation static contact and three-station isolation grounding switch |
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