CN107591276B - Rotary isolating switch contact module with arcing space - Google Patents
Rotary isolating switch contact module with arcing space Download PDFInfo
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- CN107591276B CN107591276B CN201710656965.XA CN201710656965A CN107591276B CN 107591276 B CN107591276 B CN 107591276B CN 201710656965 A CN201710656965 A CN 201710656965A CN 107591276 B CN107591276 B CN 107591276B
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- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The utility model provides a rotation type isolator contact module with arcing space, it includes the installation casing, moving contact subassembly and static contact subassembly, the moving contact subassembly dress is in moving contact subassembly mounting groove on the installation casing, the static contact subassembly dress is in be located in the static contact mounting groove on the installation casing the outside of moving contact subassembly, the moving contact subassembly can rotate around self axis direction, the moving contact subassembly rotate the in-process around self axis direction can with the static contact subassembly joint or throw off its characterized in that: and an arcing space is arranged on the mounting shell at the outer side of the track of the moving contact component rotating around the axis direction of the moving contact component. This contact module is through add the space of arcing in rotary type isolator's installation casing, and the existence in this space of arcing provides abundant space for electric arc when receiving the magnetic blow effect to lengthen down, and then can promote arc voltage effectively, finally makes isolator's breaking capacity promote.
Description
Technical Field
The invention belongs to the technical field of switches, and particularly relates to a rotary isolating switch contact module with an arcing space.
Background
The words switch are to be interpreted as open and closed. It refers to an element that can open a circuit, interrupt a current, or cause it to flow to other circuits. The most common switches are electromechanical devices that are operated by a person, in which there are one or several contacts. The "closed" of a contact indicates that the contact is conductive, allowing current to flow; an "open" of the switch indicates that the contact is not conductive, creating an open circuit, and not allowing current to flow. The development history of switches has been developed from original knife switches requiring manual operation to modern intelligent switches used in various large electrical control devices, and the functions of the switches have been increased and the safety thereof has been improved, and a rotary switch is a common switch that prevents unauthorized operation of a rotary operating device by locking a rotary operator at a specific position corresponding to a specific state of the rotary operating device. Rotary disconnectors are widely used in electrical power systems, e.g. photovoltaic, wind power, etc. For example, in a photovoltaic system, the smaller currents generated in each photovoltaic cell are combined in parallel to provide the current or total power required by the utilization system.
In existing photovoltaic systems, rotary disconnectors are typically utilized for the purpose of individually isolating, protecting and disconnecting each photovoltaic cell. At present, a common rotary isolating switch for a photovoltaic system comprises an operating mechanism and a plurality of contact modules, wherein the structure of the contact modules determines the arc extinguishing effect of the isolating switch, and the existing contact modules can generate arc discharge when a moving contact component and a fixed contact component of the rotary isolating switch are jointed or separated, if an arc cannot be quickly extinguished or leaves the rotary isolating switch, the breaking performance of the rotary isolating switch can be reduced, and safety accidents can be caused. The existing rotary isolating switch is a shell of a product on the outer side of the motion track of a moving contact, and even if an external force (such as magnetic blowing force) acts on an electric arc in the process of generating the electric arc by the motion of the moving contact, the motion track of the electric arc is limited due to the existence of the shell, so that very high electric arc voltage is not easily generated, and the breaking capacity is low.
Disclosure of Invention
The invention aims to overcome the technical defect that the discharge arc generated in the breaking process of the conventional rotary isolating switch applied to a high-voltage and high-current electrical system in the photovoltaic industry is not easy to extinguish, and provides a rotary isolating switch contact module with an arc burning space.
Technical scheme
In order to achieve the technical purpose, the invention designs a rotary type isolating switch contact module with an arcing space, which comprises an installation shell, a moving contact component and a static contact component, wherein the moving contact component is installed in a moving contact component installation groove on the installation shell, the static contact component is installed in a static contact installation groove on the installation shell and is positioned at the outer side of the moving contact component, the moving contact component can rotate around the axis direction of the moving contact component, and the moving contact component can be jointed with or separated from the static contact component in the process of rotating around the axis direction of the moving contact component, and the rotary type isolating switch contact module is characterized in that: and an arcing space is arranged on the mounting shell at the outer side of the track of the moving contact component rotating around the axis direction of the moving contact component.
Furthermore, at least one pair of magnets are arranged in a magnet mounting groove of the mounting shell below the track of the moving contact component rotating around the axis direction, the polarities of two magnets in the at least one pair of magnets are opposite, and the two magnets with opposite polarities in the at least one pair of magnets can elongate an electric arc generated when the moving contact component is jointed with or separated from the fixed contact component along an arc burning space and then discharge the electric arc from a corresponding air outlet on the mounting shell.
Furthermore, the moving contact component comprises a rotating piece and a moving contact piece, and two ends of the moving contact piece respectively correspond to the fixed contact component.
Preferably, the at least one pair of magnets are spaced apart from each other on opposite sides of the movable contact piece toward opposite polarities, so that an arc generated when the movable contact assembly is engaged with or disengaged from the fixed contact assembly can be subjected to an electromagnetic force pushing toward the outside of the mounting case.
Preferably, the air outlet is located on the mounting shell and corresponds to the electromagnetic force direction of an electric arc generated when the moving contact assembly is connected with or disconnected from the fixed contact assembly, the air outlet is divided into a first channel and a second channel through an arc isolating rib, and the first channel and the second channel are communicated with the outside through a third channel.
Preferably, the first and second channels taper from the mounting housing from the inside out.
Preferably, two magnets of the at least one pair of magnets, which have opposite polarities, are respectively mounted in the magnet mounting grooves at the bottom of the mounting groove of the movable contact assembly on the mounting case.
Preferably, each magnet of the at least one pair of magnets is a permanent magnet.
The rotary isolating switch comprises at least one contact module, and further comprises an operating mechanism, wherein the operating mechanism and the contact modules are assembled together, each contact module of the contact modules is assembled together in an overlapped mode, a handle of the operating mechanism controls the contact modules through a connecting piece, and the connecting piece penetrates through a moving contact component of the contact modules assembled together in an overlapped mode and a mounting through hole of a mounting shell to enable the moving contact component of the contact modules to be linked.
Advantageous effects
According to the rotary isolating switch contact module with the arcing space, the arcing space is additionally arranged in the installation shell of the rotary isolating switch, the electric arc is elongated along the arcing space by utilizing electromagnetic force and then is discharged out of the rotary isolating switch, and the arcing space provides sufficient space for the electric arc to be elongated under the action of magnetic blowing force, so that the arc voltage can be effectively increased, the breaking capacity of the isolating switch is finally improved, and the use safety performance of the rotary isolating switch is ensured.
Drawings
Fig. 1 is a schematic structural view of a contact module a in embodiment 1 of the present invention.
Fig. 2 is an exploded view of a contact module a in embodiment 1 of the present invention.
Fig. 3 is a plan view of a contact module a in embodiment 1 of the invention.
FIG. 4 is a schematic structural view of a mounting case in embodiment 1 of the present invention
Fig. 5 is a schematic view of a magnet mounting structure in embodiment 1 of the present invention.
Fig. 6 is a schematic view of an arc stress structure in embodiment 1 of the present invention.
Fig. 7 is a diagram of a product of the isolating switch in the embodiment of the invention.
Fig. 8 is an exploded view of a disconnector according to an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. The following detailed description and drawings are illustrative of the principles of the invention, which is not limited to the preferred embodiments described, but is defined by the claims.
As shown in fig. 1, 2, and 3, a first embodiment of the present invention: the utility model provides a rotation type isolator contact module with arcing space, it includes installation casing 1, moving contact subassembly 2 and static contact subassembly 3, moving contact subassembly 2 dress is in moving contact subassembly mounting groove 101 on the installation casing 1, static contact subassembly 3 dress is located in the static contact mounting groove 102 on the installation casing 1 the outside of moving contact subassembly 2, moving contact subassembly 2 can rotate around self axis direction in-process can with static contact subassembly 3 joint or throw off, wherein, the contact module still includes that every magnet all is at least a pair of magnet of permanent magnet. In this embodiment, the at least one pair of magnets is a pair of magnets, and the specific number is two magnets 4, as shown in fig. 5, the two magnets 4 are respectively installed in the magnet installation grooves 101a of the movable contact assembly installation groove bottom 101 on the installation casing 1. The two magnets 4 with opposite polarity directions are located on a track of the moving contact component 2 rotating around the axis direction of the moving contact component 2, an arc space 106, 106 ' is arranged on the mounting shell 1 at the outer side of the track of the moving contact component 2 rotating around the axis direction of the moving contact component 2, and the two magnets 4 with opposite polarity directions can discharge an electric arc generated when the moving contact component 2 is connected with or disconnected from the fixed contact component 3 along the arc space 106, 106 ' after being elongated along the arc space 103, 103 ' corresponding to the mounting shell 1.
As shown in fig. 4, the air outlets 103, 103 'are located on the installation housing 1, and correspond to the electromagnetic force direction of the arc generated when the movable contact assembly 2 is engaged with or disengaged from the fixed contact assembly 3, the air outlets 103, 103' are divided into first channels 103b, 103b 'and second channels 103c, 103 c' by arc-separating ribs 103a, 103a ', the first channels 103b, 103 b' and the second channels 103c, 103c 'are communicated with the outside by third channels 103d, 103 d', and the first channels 103b, 103b 'and the second channels 103c, 103 c' are gradually narrowed from the inside to the outside of the installation housing 1.
In this embodiment, the moving contact assembly 2 includes a rotating piece 201 and a moving contact piece 202 whose two ends respectively correspond to the fixed contact assembly 3. The two magnets 4 are respectively arranged on two sides of a central axis O of the installation shell 1, so that electric arcs generated when the movable contact component 2 is connected with or disconnected from the fixed contact component 3 can be subjected to electromagnetic force pushing towards the outer side of the installation shell 1.
In the working process of the present embodiment, as shown in fig. 6, when the main circuit is operated by a current I, the movable contact assembly 2 rotates, and at this time, in the movable contact assembly 2, an arc I1 and an arc I2 are generated between both ends of the movable contact 202 and the fixed contact assembly 3, the arc I1 and the arc I2 are respectively acted by a magnetic blowing force F of the two magnets 4, the arc I1 and the arc I2 are respectively moved toward the corresponding first channels 103b and 103b 'after being extended along the arc burning spaces 106 and 106' under the action of the magnetic blowing force F, and when the movable contact assembly 2 moves to a final stop position, the arc I1 and the arc I2 move from the second channels 103c and 103c ', and finally the arcs are all discharged to the outside of the isolating switch from the third channels 103d and 103 d', so as to finally realize the arc breaking and complete the protection of the line.
As shown in fig. 7 and 8, the present invention further provides a rotary disconnector comprising two contact modules A, A 'according to the above embodiment, further comprising an operating mechanism B, wherein the operating mechanism B is assembled with the two contact modules A, A', the two contact modules A, A 'are assembled on top of each other, a handle B01 of the operating mechanism B controls the two contact modules A, A' through a connecting member 6, and the connecting member 6 passes through the movable contact assemblies a2 and a '2 of the two contact modules A, A' assembled on top of each other and the mounting through holes a105 and a '105 of the mounting housings A1 and a' 1 to enable the movable contact assemblies a2 and a '2 of the two contact modules A, A' to be interlocked.
The structures, ratios, sizes, quantities, and the like shown in the drawings of the embodiments of the present invention are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance. In addition, the terms such as "upper", "lower", "left", "right", "middle", "clockwise" and "counterclockwise" used in the present specification are for clarity of description only, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not limited by the technical contents of the substantial changes, but also considered to be the scope of the present invention.
Claims (6)
1. The utility model provides a rotation type isolator contact module with arcing space, it includes the installation casing, moving contact subassembly and static contact subassembly, the moving contact subassembly dress is in moving contact subassembly mounting groove on the installation casing, the static contact subassembly dress is in be located in the static contact mounting groove on the installation casing the outside of moving contact subassembly, the moving contact subassembly can rotate around self axis direction, the moving contact subassembly rotate the in-process around self axis direction can with the static contact subassembly joint or throw off its characterized in that: an arcing space is arranged on the mounting shell on the outer side of the rotating track of the moving contact component around the axis direction of the moving contact component;
at least one pair of magnets are arranged in a magnet mounting groove of the mounting shell below a track of the moving contact component rotating around the axis direction, the polarities of two magnets in the at least one pair of magnets are opposite, and two magnets with opposite polarities in the at least one pair of magnets can elongate an electric arc generated when the moving contact component is jointed with or separated from the fixed contact component along an arc burning space and then discharge the electric arc from a corresponding air outlet on the mounting shell;
the gas outlet is positioned on the mounting shell and corresponds to the direction of electromagnetic force applied to an electric arc generated when the moving contact assembly is jointed with or separated from the fixed contact assembly, the gas outlet is divided into a first channel and a second channel through an arc isolating rib, and the first channel and the second channel are communicated with the outside through a third channel;
the moving contact component comprises a rotating piece and a moving contact piece, and two ends of the moving contact piece correspond to the fixed contact component respectively.
2. The rotary isolator contact module with arcing space of claim 1, wherein: the at least one pair of magnets are separated from each other on both sides of the central axis of the mounting case by two magnets having opposite polarities, so that an arc generated when the movable contact assembly is engaged with or disengaged from the fixed contact assembly can be subjected to an electromagnetic force pushing the arc to the outside of the mounting case.
3. The rotary isolator contact module with arcing space of claim 1, wherein: the first and second channels taper from the mounting housing from the inside out.
4. The rotary isolator contact module with arcing space of claim 1, wherein: two magnets with opposite polarities in the at least one pair of magnets are respectively arranged in the magnet mounting groove at the bottom of the moving contact assembly mounting groove on the mounting shell.
5. The rotary isolator contact module with arcing space of claim 1, wherein: each magnet of the at least one pair of magnets is a permanent magnet.
6. A rotary isolating switch is characterized in that: the contact module comprises at least one contact module as claimed in any one of the claims 1 to 5 and an operating mechanism, wherein the operating mechanism is assembled with the contact module, each contact module of the at least one contact module as claimed in any one of the claims 1 to 5 is assembled in an overlapping manner, a handle of the operating mechanism controls the contact module through a connecting piece, and the connecting piece penetrates through a movable contact component of the contact module assembled in an overlapping manner and a mounting through hole of a mounting shell to enable the movable contact component of the contact module to be linked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710656965.XA CN107591276B (en) | 2017-08-03 | 2017-08-03 | Rotary isolating switch contact module with arcing space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710656965.XA CN107591276B (en) | 2017-08-03 | 2017-08-03 | Rotary isolating switch contact module with arcing space |
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| Publication Number | Publication Date |
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| CN107591276A CN107591276A (en) | 2018-01-16 |
| CN107591276B true CN107591276B (en) | 2021-11-23 |
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| CN201710656965.XA Active CN107591276B (en) | 2017-08-03 | 2017-08-03 | Rotary isolating switch contact module with arcing space |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108648951A (en) * | 2018-07-20 | 2018-10-12 | 上海良信电器股份有限公司 | Rotary isolation switch contact module structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207441561U (en) * | 2017-08-03 | 2018-06-01 | 上海良信电器股份有限公司 | A kind of rotary separation switch contact module and the rotary separation switch equipped with arcing space |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101552146A (en) * | 2008-04-03 | 2009-10-07 | 波米尔公司 | Current breaking device for low voltage and high voltage |
| CN201576597U (en) * | 2010-01-14 | 2010-09-08 | 西安科灵自动化科技有限公司 | 3300V and below 3300V alternating-current high-voltage isolator |
| CN201975359U (en) * | 2011-01-07 | 2011-09-14 | 上海诺雅克电气有限公司 | Arc-extinguishing device for circuit breaker |
| AU2015268682B2 (en) * | 2014-12-18 | 2020-07-23 | Redarc Technologies Pty Ltd | A rotary switch |
| CN206363924U (en) * | 2017-01-18 | 2017-07-28 | 温州金宏电器有限公司 | A kind of disconnecting switch |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207441561U (en) * | 2017-08-03 | 2018-06-01 | 上海良信电器股份有限公司 | A kind of rotary separation switch contact module and the rotary separation switch equipped with arcing space |
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