CN115172091A - Self-protection high-voltage isolating switch - Google Patents
Self-protection high-voltage isolating switch Download PDFInfo
- Publication number
- CN115172091A CN115172091A CN202210762203.9A CN202210762203A CN115172091A CN 115172091 A CN115172091 A CN 115172091A CN 202210762203 A CN202210762203 A CN 202210762203A CN 115172091 A CN115172091 A CN 115172091A
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- isolating switch
- connecting rod
- self
- column
- soft
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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
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
-
- 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
-
- 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
-
- 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
- H01H31/006—Air-break switches for high tension without arc-extinguishing or arc-preventing means adapted to be operated by a hot stick; Hot sticks therefor
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to the technical field of high-voltage isolating switches, in particular to a self-protection high-voltage isolating switch which comprises an upright post, wherein the top of the upright post is fixedly connected with a base, a plurality of uniformly distributed post insulators are symmetrically arranged on two sides of the top of the base, static contacts are fixedly arranged at the top ends of the post insulators on the two sides, a support column is also arranged between the two post insulators, the top end of the support column is movably connected with a moving contact, and the moving contact is matched with the static contact of a wire inlet end to form a wire inlet isolating switch; according to the invention, the incoming line isolating switch and the soft start isolating switch are arranged and are both arranged on the base, so that the integration level is high, the installation is convenient, the installation efficiency is improved, and the incoming line isolating operation mechanism and the soft start isolating operation mechanism are arranged, so that the incoming line isolating switch and the soft start isolating switch can be conveniently and respectively controlled, and the operation is carried out without tools in the operation process, so that the operation is convenient and the safety is high.
Description
Technical Field
The invention relates to the technical field of high-voltage isolating switches, in particular to a self-protection high-voltage isolating switch.
Background
The high-voltage isolating switch is an important switching device in an electric system of a power plant and a transformer substation and needs to be matched with a high-voltage circuit breaker for use. The isolating switch is suitable for high-voltage transmission lines with three-phase alternating current of 50Hz and rated voltage of 12KV and above. The high voltage equipment is used for switching on, switching off or switching over the line under the condition of no voltage load. The main functions are as follows: the safety of the high-voltage electrical appliance and the device during maintenance work is ensured, the voltage isolation function is realized, the high-voltage electrical appliance and the device cannot be used for cutting off, putting in load current and cutting off short-circuit current, and only can be used for certain switching operation without generating strong electric arcs, namely the high-voltage electrical appliance and the device do not have the arc extinguishing function; the voltage class is divided into an indoor type and an outdoor type according to different installation places, and is divided into a single column type, a double column type and a three column type according to the number of the insulating support columns, and each voltage class is provided with optional equipment.
Most of the existing isolating switches are assembled together with resistors on site for use in a matched mode, on one hand, the occupied area is large, the assembling is inconvenient, on the other hand, the linkage is poor, the sequential actions of main division-ground combination-ground division-main combination of the switches cannot be guaranteed, and the safety is low.
Disclosure of Invention
In view of this, the invention provides a self-protection high-voltage isolating switch, which has the advantages of compact structure, convenient installation, good safety and self-protection function.
In order to solve the technical problem, the invention provides a self-protection high-voltage isolating switch which comprises an upright post, wherein the top of the upright post is fixedly connected with a base, a plurality of uniformly distributed post insulators are symmetrically arranged on two sides of the top of the base, static contacts are arranged at the top ends of the post insulators on the two sides, a supporting column is arranged between two adjacent post insulators, two moving contacts corresponding to the positions of the post insulators are movably connected to the top end of the supporting column, the moving contacts and the static contacts are matched to form the incoming isolating switch, incoming isolating operation mechanisms used for controlling the incoming isolating switch to be opened and closed are further arranged at the bottoms of the two moving contacts, a soft-start isolating switch is further arranged between the top end of the supporting column and the post insulator on one side of the supporting column, and a soft-start isolating operation mechanism used for controlling the soft-start isolating switch to be opened and closed is arranged at the bottom of the soft-start isolating switch.
Through setting up inlet wire isolator, soft isolator that opens to on all installing inlet wire isolator, soft isolator that opens the base, the integrated level is high, and the installation of being convenient for has improved the installation effectiveness, keeps apart operating device, soft isolation operating device that opens through setting up the inlet wire, on the one hand can be convenient respectively to inlet wire isolator, soft isolator that opens control, on the other hand need not to operate with the help of the instrument again in operation process, convenient operation and security height.
Furthermore, the top end of the support column is also provided with a fixed contact, the soft start isolating switch comprises a soft start resistor, one end of the soft start resistor is hinged with the support column insulator, and the other end of the soft start resistor is connected with the fixed contact on the support column.
Through setting up soft resistance that opens, can reduce impulse current and play overcurrent protection effect.
Furthermore, the inlet wire isolation operating mechanism and the soft start isolation operating mechanism are the same in structure and respectively comprise an insulating column, a rotating part and a pull rod, the top end of the insulating column is movably connected with the bottom of the moving contact, the bottom end of the insulating column is movably connected with the top end of the pull rod, one end of the rotating part is hinged to the base, and the other end of the rotating part is hinged to the pull rod.
Through setting up the insulated column, security when can guaranteeing the operation, when using, through the drive pull rod, the pull rod drives and rotates piece and insulated column downstream, and the insulated column drives the moving contact downstream to make the moving contact be connected with the static contact, the switch-on circuit, convenient operation.
Furthermore, a grounding isolating switch is further arranged on the outer side of the base and used in cooperation with the incoming line isolating switch.
Grounding isolator on the one hand prevents to have residual charge on the consumer behind the power failure, endangers the safety of examining and repairing electrician, plays the discharge effect, and on the other hand prevents circuit breaker internal fault, incomplete separating brake, and the consumer is still electrified after the separating brake operation, endangers examining and repairing electrician's safety, through closing grounding isolator, makes higher level's circuit breaker protection action trip to play the effect of protection personal safety.
Furthermore, the bottom of the grounding switch is also provided with a grounding isolation operating mechanism for controlling the opening and closing of the grounding isolation switch, and the grounding isolation operating mechanism is arranged, so that the operation is more convenient and safer.
Further, operating device is kept apart to ground connection includes first connecting rod, second connecting rod, cam and dwang, first connecting rod with the base rotates to be connected, and first connecting rod run through a plurality of isolator and with isolator's one end fixed connection, second connecting rod one end with first connecting rod swing joint, second connecting rod are used for driving first connecting rod and rotate, the other end and the cam of second connecting rod are articulated, and the cam is applicable to and drives the second connecting rod and remove, dwang and cam fixed connection, dwang are applicable to and drive the cam and rotate.
Furthermore, the post insulator is a ZSW-40.5 pollution-resistant post insulator, and the height of the post insulator is 600mm.
Furthermore, the support column is made of insulating materials, and safety performance is guaranteed.
The technical scheme of the invention has the following beneficial effects:
1. according to the invention, the incoming line isolating switch and the soft start isolating switch are arranged and are both arranged on the base, so that the integration level is high, the installation is convenient, the installation efficiency is improved, and the incoming line isolating operation mechanism and the soft start isolating operation mechanism are arranged, so that the incoming line isolating switch and the soft start isolating switch can be conveniently and respectively controlled, and the operation is carried out without tools in the operation process, so that the operation is convenient and the safety is high.
2. According to the invention, the grounding isolating switch is arranged, is matched with the inlet wire isolating switch for use, and is linked with the inlet wire isolating operating mechanism through the grounding isolating operating mechanism, so that the sequential actions of main division-grounding closing and ground division-main closing can be ensured, namely, the safety of operation is ensured, and a self-protection function is formed.
Drawings
FIG. 1 is a schematic structural view of a front view of the present invention;
FIG. 2 is a side view of a partial structure of the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 isbase:Sub>A schematic cross-sectional view taken along the line A-A in FIG. 2;
FIG. 5 is a schematic structural diagram of an incoming line isolation operating mechanism according to the present invention;
fig. 6 is an electrical schematic of the present invention.
In the figure: 1. a base; 2. a post insulator; 3. a moving contact; 4. a soft start resistance; 5. a soft start isolation operating mechanism; 6. an incoming line isolation operating mechanism; 61. an insulating column; 62. a rotating member; 63. a pull rod; 7. a column; 10. a grounding isolation switch; 11. a ground isolation operating mechanism; 111. a first link; 112. a second link; 113. a cam; 114. rotating the rod; 12. and (4) a support column.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 5 of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the description of the embodiments of the invention given above, are within the scope of protection of the invention.
Most of the existing isolating switches are assembled together with resistors on site for use in a matched mode, on one hand, the occupied area is large, the assembling is inconvenient, on the other hand, the linkage is poor, the sequential actions of main division-ground combination-ground division-main combination of the switches cannot be guaranteed, and the safety is low.
To solve the above problems, as shown in fig. 1 to 5: the self-protection high-voltage isolating switch comprises an upright post 7, a base 1 is fixedly connected to the top of the upright post 7, a plurality of uniformly distributed post insulators 2 are symmetrically arranged on two sides of the top of the base 1, static contacts are fixedly mounted on the top ends of the post insulators 2 on two sides, a support column 12 is further arranged between every two adjacent post insulators 2, two movable contacts 3 corresponding to the positions of the post insulators 2 are movably connected to the top ends of the support columns 12, the movable contact 3 on one side serves as a wire inlet end, the movable contact 3 on the other side serves as a load end, the movable contact 3 is matched with the static contact on the wire inlet end to form a wire inlet isolating switch, wire inlet isolating operation mechanisms 6 used for controlling the wire inlet isolating switch to be opened and closed are further arranged at the bottoms of the two movable contacts 3, a soft start isolating switch is further arranged between the top end of the support column 12 and the post insulator 2 on one side, the soft start isolating switch is located at the load end, and a soft start isolating operation mechanism 5 used for controlling the soft start isolating switch to be opened and closed is arranged at the bottom of the soft start isolating switch.
The self-protection high-voltage isolating switch comprises a stand column 7, the bottom of the stand column 7 is fixed on a horizontal ground, the top of the stand column 7 is fixedly connected with a base 1, the base 1 is composed of a plurality of channel steel, a plurality of uniformly distributed post insulators 2 are symmetrically arranged on two sides of the top of the base 1, the type of each post insulator 2 is ZSW-40.5 stain-resistant post insulator 2, the height of each post insulator 2 is 600mm, fixed contacts are fixedly arranged on the top ends of the post insulators 2 on two sides, a support column 12 is further arranged between every two adjacent post insulators 2, the bottom end of each support column 12 is fixedly connected with the base 1, two movable contacts 3 corresponding to the positions of the post insulators 2 are movably connected to the top end of each support column 12, the movable contacts 3 on one side serve as wire inlet ends, the movable contacts 3 on the other side serve as external load ends, the movable contacts 3 are matched with the fixed contacts on the wire inlet ends to form a wire isolating switch, an isolating operation mechanism 6 for controlling the wire inlet of the wire isolating switch is further arranged on the bottoms of the two movable contacts 3, a soft isolating switch is further arranged between the top end of each support column 12 and the post 2 on one side, the other side, the soft switch is located at a load end, and a soft switch is arranged at the bottom of the isolating switch.
This embodiment, through setting up inlet wire isolator, soft isolator that opens to with inlet wire isolator, soft isolator that opens all install on base 1, the integrated level is high, the installation of being convenient for has improved the installation effectiveness, keep apart operating device 6, soft isolation operating device 5 that opens through setting up the inlet wire, on the one hand can be convenient respectively to inlet wire isolator, soft isolator that opens control, on the other hand need not to operate with the help of the instrument again in operation process, convenient operation and security height.
According to an embodiment of the present invention, as shown in fig. 1, the top end of the supporting column 12 is also provided with a fixed contact, the soft start isolating switch includes a soft start resistor 4 with one end hinged to the supporting column insulator 2, the other end of the soft start resistor 4 is connected to the fixed contact on the supporting column 12, and by providing the soft start resistor 4, the impact current can be reduced and the overcurrent protection effect can be achieved.
According to another embodiment of the present invention, as shown in fig. 5, the incoming line isolation operating mechanism 6 and the soft start isolation operating mechanism 5 have the same structure, and each of them includes an insulating column 61, a rotating member 62 and a pull rod 63, the top end of the insulating column 61 is movably connected with the bottom of the movable contact 3, the bottom end of the insulating column 61 is movably connected with the top end of the pull rod 63, one end of the rotating member 62 is hinged to the base 1, and the other end of the rotating member 62 is hinged to the pull rod 63.
This embodiment, through setting up insulating column 61, security when can guaranteeing the operation, when using, through drive pull rod 63, pull rod 63 drives and rotates piece 62 and insulating column 61 and move down, and insulating column 61 drives moving contact 3 and moves down to make moving contact 3 and static contact be connected, the switch-on circuit, convenient operation.
In an embodiment of the present invention, as shown in fig. 1 to 3, a grounding isolation switch 10 is further disposed on an outer side, the grounding isolation switch 10 is used in cooperation with an incoming line isolation switch, a grounding isolation operating mechanism 11 for controlling the grounding isolation switch 10 to open and close is further disposed at a bottom of the grounding switch, the grounding isolation operating mechanism 11 includes a first connecting rod 111, a second connecting rod 112, a cam 113 and a rotating rod 114, the first connecting rod 111 is rotatably connected with the base 1, the first connecting rod 111 penetrates through the plurality of isolation switches and is fixedly connected with one end of the isolation switches, one end of the second connecting rod 112 is movably connected with the first connecting rod 111, the second connecting rod 112 is used for driving the first connecting rod 111 to rotate, the other end of the second connecting rod 112 is hinged with the cam 113, the cam 113 is adapted to drive the second connecting rod 112 to move, the rotating rod 114 is fixedly connected with the cam 113, and the rotating rod 114 is adapted to drive the cam 113 to rotate.
In this embodiment, when the grounding isolation switch 10 is operated, the rotating rod 114 is driven to rotate, the rotating rod 114 drives the cam 113 to rotate, the cam 113 drives the second connecting rod 112 to move, the second connecting rod 112 drives the first connecting rod 111 to rotate, and the movable end of the grounding isolation switch 10 rotates, so that the opening and closing control is realized, and the operation is convenient.
According to the invention, the incoming line isolating switch and the soft start isolating switch are arranged and are both arranged on the base 1, so that the integration level is high, the installation is convenient, the installation efficiency is improved, the incoming line isolating operating mechanism 6 and the soft start isolating operating mechanism 5 are arranged, on one hand, the incoming line isolating switch and the soft start isolating switch can be conveniently and respectively controlled, on the other hand, the operation is carried out without the help of tools in the operation process, the operation is convenient and the safety is high; by arranging the grounding isolating switch 10, the grounding isolating switch 10 is matched with the inlet wire isolating switch for use, and is linked with the inlet wire isolating operating mechanism 6 through the grounding isolating operating mechanism 11, the sequential actions of main division-grounding closing and ground division-main closing can be ensured, namely, the operation safety is ensured, and a self-protection function is formed.
In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A self-protection high-voltage isolating switch is characterized in that: the automatic opening and closing device is characterized by comprising a stand column (7), wherein a base (1) is fixedly connected to the top of the stand column (7), a plurality of uniformly distributed post insulators (2) are symmetrically arranged on two sides of the top of the base (1), fixed contacts are arranged on the top ends of the post insulators (2) on two sides, a support column (12) is arranged between every two adjacent post insulators (2), two movable contacts (3) corresponding to the positions of the post insulators (2) are movably connected to the top ends of the support column (12), the movable contacts (3) are matched with the fixed contacts to form an incoming line isolating switch, the bottom of each movable contact (3) is further provided with an incoming line isolating operation mechanism (6) used for controlling the incoming line isolating switch to be opened and closed, a soft opening isolating switch is further arranged between the top end of each support column (12) and the post insulator (2) on one side of the support column, and a soft opening isolating operation mechanism (5) used for controlling the soft opening and closing of the soft opening isolating switch is arranged on the bottom of the soft opening and closing isolating switch.
2. The self-protecting high-voltage isolating switch of claim 1, wherein: the top end of the supporting column (12) is also provided with a static contact, the soft start isolating switch comprises a soft start resistor (4) with one end hinged with the supporting column insulator (2), and the other end of the soft start resistor (4) is connected with the static contact on the supporting column (12).
3. The self-protecting high-voltage isolating switch of claim 1, wherein: operating device (6) is kept apart with soft opening to the inlet wire and operating device (5) structure is the same, all includes insulating column (61), rotates piece (62) and pull rod (63), insulating column (61) top and moving contact (3) bottom swing joint, insulating column (61) bottom and pull rod (63) top swing joint, it is articulated with base (1) to rotate piece (62) one end, and it is articulated with pull rod (63) to rotate piece (62) other end.
4. The self-protecting high-voltage isolating switch of claim 1, wherein: the base (1) outside still is provided with ground connection isolator (10), ground connection isolator (10) with inlet wire isolator uses in the cooperation.
5. The self-protecting high-voltage isolating switch of claim 4, wherein: and the bottom of the grounding switch is also provided with a grounding isolation operating mechanism (11) for controlling the opening and closing of the grounding isolation switch (10).
6. The self-protecting high-voltage isolating switch of claim 1, wherein: operating device (11) is kept apart in ground connection includes first connecting rod (111), second connecting rod (112), cam (113) and dwang (114), first connecting rod (111) with base (1) rotates to be connected, and first connecting rod (111) run through a plurality of isolator and with isolator's one end fixed connection, second connecting rod (112) one end with first connecting rod (111) swing joint, second connecting rod (112) are used for driving first connecting rod (111) and rotate, the other end and cam (113) of second connecting rod (112) are articulated, and cam (113) are applicable to and drive second connecting rod (112) and remove, dwang (114) and cam (113) fixed connection, and dwang (114) are applicable to and drive cam (113) and rotate.
7. The self-protecting high-voltage isolating switch of claim 1, wherein: the post insulator (2) is a ZSW-40.5 stain-resistant post insulator (2), and the height of the post insulator (2) is 600mm.
8. The self-protecting high-voltage isolating switch of claim 1, wherein: the support columns (12) are made of insulating materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210762203.9A CN115172091A (en) | 2022-06-30 | 2022-06-30 | Self-protection high-voltage isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210762203.9A CN115172091A (en) | 2022-06-30 | 2022-06-30 | Self-protection high-voltage isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115172091A true CN115172091A (en) | 2022-10-11 |
Family
ID=83490070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210762203.9A Pending CN115172091A (en) | 2022-06-30 | 2022-06-30 | Self-protection high-voltage isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115172091A (en) |
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2022
- 2022-06-30 CN CN202210762203.9A patent/CN115172091A/en active Pending
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