CN111933474A - Isolating switch and switch cabinet - Google Patents
Isolating switch and switch cabinet Download PDFInfo
- Publication number
- CN111933474A CN111933474A CN202010674649.7A CN202010674649A CN111933474A CN 111933474 A CN111933474 A CN 111933474A CN 202010674649 A CN202010674649 A CN 202010674649A CN 111933474 A CN111933474 A CN 111933474A
- Authority
- CN
- China
- Prior art keywords
- movable blade
- isolating switch
- disc spring
- insulating
- main shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- H01H31/026—Movable parts and contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
-
- 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
Abstract
The invention relates to an isolating switch, which comprises an insulating transmission main shaft, an insulating transmission driven shaft and a movable cutter assembly; the linkage assembly is used for driving the insulation transmission driven shaft to rotate reversely when the insulation transmission main shaft rotates; the movable blade assembly comprises a first movable blade and a second movable blade; the second movable blade and the first movable blade are driven by the insulating transmission main shaft and the insulating transmission driven shaft respectively to rotate so as to complete the switching-on action; the invention uses the mode that two moving blades move to close and open the switch simultaneously in the design of an isolating switch, the rotating space required by the opening and closing rotation of the two moving blades is smaller than the rotating space of the isolating switch of the existing single moving blade set on a single static contact, the opening and closing speed is high, the appearance is compact and small, the technical requirements of the standard of the isolating switch can be met, and the technical problems of large space occupied by the rotating moving blade set of the existing isolating switch and large appearance volume are solved.
Description
Technical Field
The invention relates to the technical field of switches, in particular to an isolating switch and a switch cabinet.
Background
Along with the construction of a power distribution network, in the secondary power transformation and distribution of a power system, the number of the used ring main units is increased, the ring main units have the outstanding advantages, and the device has the characteristics of simple and compact structure, small volume, flexible operation, reliable interlocking, convenient cabinet type expansion and the like, and is suitable for places such as switching stations, box-type transformer substations, residential districts, industrial and mining enterprises, large markets and the like. Because the installation place area of looped netowrk cabinet is limited, and then develop narrow type air looped netowrk cabinet and narrow type environment-friendly looped netowrk cabinet, the reduction of the cabinet inner space for once switch element just requires compact miniaturization in the cabinet, this is a technical problem that urgently needs to be solved.
Disclosure of Invention
The invention provides an isolation switch and a switch cabinet, aiming at the defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an isolating switch is constructed, wherein the isolating switch comprises an insulating transmission main shaft, an insulating transmission driven shaft and a movable cutter component; the insulating transmission main shaft drives the insulating transmission driven shaft to rotate reversely through the linkage assembly when rotating; the movable blade assembly comprises a first movable blade and a second movable blade; the second movable blade and the first movable blade are driven by the insulating transmission main shaft and the insulating transmission driven shaft respectively to rotate so as to complete the action of switching on.
According to the isolating switch, the tail ends of the second movable blade and the first movable blade are driven to rotate by the insulating transmission main shaft and the insulating transmission driven shaft respectively, the front ends of the first movable blade and the second movable blade are arranged oppositely, and the switching-on action is completed through the separation and the close contact of the front ends.
According to the isolating switch, the accommodating groove for accommodating the front end of the first movable blade is formed at the front end of the second movable blade; and one or more conductive bumps which are contacted with the first movable blade for conducting are arranged on the inner walls of the two sides of the accommodating groove.
The isolating switch provided by the invention is characterized in that the movable blade assembly further comprises a closing limiting block for stopping and limiting when the first movable blade and the second movable blade are closed; and the closing limiting block is provided with an empty avoiding groove which avoids the front end position of the first movable blade and the second movable blade when closing.
The isolating switch comprises a first movable blade, a second movable blade and a third movable blade, wherein the first movable blade comprises two first conducting blades which are attached side by side, the front ends of the two first conducting blades are connected and locked through a locking piece, the tail ends of the two first conducting blades clamp a first conducting supporting piece, and the first conducting supporting piece is electrically connected with a first incoming and outgoing line copper bar; the isolating switch also comprises first disc spring pieces which extrude the outer sides of the tail ends of the two first conducting strips, first disc spring sleeves which are sleeved outside the first disc spring pieces in a one-to-one correspondence mode, and first locking screws which penetrate through the two first disc spring sleeves, the two first disc spring pieces, the tail ends of the two first conducting strips and the first conducting supporting piece; the insulating transmission driven shaft and the first locking screw are coaxially arranged, and a first clamping piece for clamping and fixing the tail end of the first movable blade in a left-right mode is arranged on the insulating transmission driven shaft.
The isolating switch comprises a first movable blade, a second movable blade and a connecting rod, wherein the first movable blade comprises two parallel first conducting strips with intervals, and an accommodating slot is formed in the area between the front ends of the two first conducting strips; a support piece is arranged between the front ends of the two second conducting strips, and second disc reeds are arranged on the two outer sides of the two second conducting strips; the isolating switch also comprises second disc spring sleeves which are sleeved outside the second disc spring pieces in a one-to-one corresponding mode, and second locking screws which penetrate through the two second disc spring sleeves, the two second disc spring pieces, the two second conducting strips and the supporting piece;
a second conductive supporting piece is further arranged between the tail ends of the two second conductive sheets, and the second conductive supporting piece is electrically connected with a second wire inlet and outlet copper bar; the isolating switch also comprises third disc spring pieces which extrude the outer sides of the tail ends of the two second conducting strips, third disc spring sleeves which are sleeved outside the third disc spring pieces in a one-to-one correspondence mode, and third locking screws which penetrate through the two third disc spring sleeves, the two third disc spring pieces, the tail ends of the two second conducting strips and the second conducting supporting piece;
the insulating transmission main shaft and the third locking screw are coaxially arranged, and a second clamping piece for clamping and fixing the tail end of the second movable blade in a left-right mode is arranged on the insulating transmission main shaft.
The isolating switch comprises an isolating switch body, a linkage assembly and a connecting component, wherein the linkage assembly comprises two transmission crank arms and a linkage plate, the two transmission crank arms are respectively connected with an insulating transmission main shaft and an insulating transmission driven shaft; and two ends of the linkage plate are respectively connected with the two transmission crank arms in an eccentric rotation manner.
The isolating switch further comprises a rack; the insulating transmission main shaft and the insulating transmission driven shaft are arranged on the rack in parallel and are connected with the rack in a rotating mode.
The isolating switch is characterized in that one or more single-phase loop insulating supports are arranged on the rack, and a moving blade supporting seat for installing and limiting the moving blade component is arranged on each single-phase loop insulating support; the single-phase circuit insulation support is provided with one or more connecting support legs connected with the rack, an anti-climbing umbrella skirt is arranged on the connecting support legs, and support reinforcing ribs are arranged on the back of the single-phase circuit insulation support.
A switch cabinet is provided with the isolating switch according to the isolating switch.
The invention has the beneficial effects that: the invention uses the mode that the two moving blades move to open and close the switch simultaneously in the design of the isolating switch, the rotating space required by the opening and closing rotation of the two moving blades is smaller than the rotating space of the isolating switch of the existing single moving blade set, the opening and closing speed is high, the appearance is compact and small, the technical requirements of the standard of the isolating switch can be met, and the technical problems of large space occupied by the rotating moving blade set of the existing isolating switch and large appearance volume are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only part of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the drawings:
FIG. 1 is a schematic diagram of a disconnecting switch according to a preferred embodiment of the present invention;
FIG. 2 is an enlarged view of the first movable blade of the isolating switch in accordance with the preferred embodiment of the present invention;
FIG. 3 is an enlarged view of the second moving blade of the isolating switch in accordance with the preferred embodiment of the present invention;
FIG. 4 is a side view of the isolation switch single-phase loop insulation support of the preferred embodiment of the invention;
fig. 5 is a schematic structural diagram of a disconnecting switch linkage assembly according to a preferred embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.
The isolating switch of the preferred embodiment of the invention, as shown in fig. 1 and also shown in fig. 2-5, comprises an insulating transmission main shaft 1, an insulating transmission driven shaft 2 and a moving blade assembly 3; the linkage assembly 4 is further included, and when the insulation transmission main shaft 1 rotates, the insulation transmission driven shaft 2 is driven to rotate reversely through the linkage assembly 4; the movable blade assembly 3 comprises a first movable blade 30 and a second movable blade 31; the second movable blade 31 and the first movable blade 30 are driven by the insulating transmission main shaft 1 and the insulating transmission driven shaft 2 respectively to rotate to complete the switching-on action;
the invention uses the mode that two moving blades move to close and open the switch simultaneously in the design of an isolating switch, the rotating space required by the opening and closing rotation of the two moving blades is smaller than the rotating space of the isolating switch of the existing single moving blade set on a single static contact, the opening and closing speed is high, the appearance is compact and small, the technical requirements of the standard of the isolating switch can be met, and the technical problems of large space occupied by the rotating moving blade set of the existing isolating switch and large appearance volume are solved;
specifically, when the opening and closing actions are needed, the rotary insulating transmission main shaft 1 is operated, the rotary insulating driven shaft 2 is driven to rotate reversely through the linkage component 4, the second movable blade 31 and the first movable blade 30 are further driven to rotate for opening and closing, otherwise, the closing and opening actions are rotated, the space needed by the opening and closing actions is smaller, and the opening and closing speed is higher;
it should be noted that the linkage assembly 4 may have other manners, and is not limited to the following transmission structure of the present application; for example, the transmission mode can adopt the existing transmission mode such as a gear transmission mode, a chain transmission mode and the like, and various changes based on the transmission mode belong to the protection scope of the present application.
Preferably, the tail ends of the second movable blade 31 and the first movable blade 30 are respectively driven by the insulating transmission main shaft 1 and the insulating transmission driven shaft 2 to rotate, and the front ends of the first movable blade 30 and the second movable blade 31 are arranged oppositely and are separated and tightly attached to complete the switching-on action through the front ends; the structure is reasonable in layout and good in reliability.
Preferably, the front end of the second movable blade 31 is formed with an accommodating slot 32 for accommodating the front end of the first movable blade 30; one or more conductive bumps 320 contacting the first movable blade for conduction are arranged on the inner walls of the two sides of the accommodating slot 32; during closing, the front end of the first movable blade 30 enters the accommodating slot 32 and is clamped by the conductive bumps 320 on the two sides, so that the reliability of electrical connection during closing is guaranteed.
Preferably, the movable blade assembly further comprises a closing limiting block 33 for stopping and limiting when the first movable blade 30 and the second movable blade 31 are closed; the closing limiting block 33 is provided with a clearance groove 330 which avoids the front end position of the first moving blade 30 and the second moving blade 31 when closing; when the first movable blade 30 and the second movable blade 31 rotate to be switched on, the switching-on position is stopped through the switching-on limiting block 33, and meanwhile, the switching-on limiting block is provided with the clearance groove 330 which avoids the front end position of the first movable blade 30 and the front end position of the second movable blade 31 when the first movable blade 30 and the second movable blade 31 are switched on, so that the situation that the front ends of the first movable blade 30 and the second movable blade 31 are bent when the switch is switched on is avoided, and the service life is guaranteed.
Preferably, the first movable blade 30 comprises two first conductive sheets 301 attached side by side, the front ends of the two first conductive sheets 301 are connected and locked by a locking member 302, the tail ends of the two first conductive sheets 301 clamp a first conductive support member 303, and the first conductive support member 303 is electrically connected with a first wire inlet and outlet copper bar 304; the isolating switch further comprises first disc springs 500 which extrude the outer sides of the tail ends of the two first conductive sheets 301, first disc spring sleeves 501 which are sleeved outside the first disc springs 500 in a one-to-one correspondence manner, and first locking screws 502 which penetrate through the two first disc spring sleeves 501, the two first disc springs 500, the tail ends of the two first conductive sheets 301 and the first conductive supporting piece 303; the insulated transmission driven shaft 2 and the first locking screw 502 are coaxially arranged, and the insulated transmission driven shaft 2 is provided with a first clamping piece 20 which clamps and fixes the tail end of the first movable blade 30 left and right;
the front ends of the two first conducting strips 301 are connected and locked by the locking piece 302, so that the stability of the shape of the conducting strips is guaranteed, the strength is high, and the conducting strips are not easy to open and deform; the tail ends of the two first conducting strips 301 clamp the first conducting support 303, the first incoming and outgoing line copper bar 304 is used for leading out and electrically connecting, the clamping force is kept through the two first disc spring pieces 500 and the first disc spring sleeve 501, the first locking screw 502 is used for locking each component, the installation is convenient, and the first conducting strips can be kept rotatable and have larger electric connection contact area; the assembly is very convenient by clamping and fixing the two first clamping pieces 20;
preferably, the two first moving blades 30 are formed by folding a whole section of material; the middle of the first conductive sheet 301 is bent to form a clamping position for clamping the first conductive support 303.
Preferably, the second movable blade 31 includes two second conductive sheets 311 arranged side by side and having a gap, and the accommodating slot 32 is formed in the region between the front ends of the two second conductive sheets 311; a support 600 is further arranged between the front ends of the two second conductive sheets 311, and second disc springs 601 are arranged on the two outer sides; the isolating switch further comprises second disc spring sleeves 602 which are sleeved outside the second disc spring pieces 601 in a one-to-one correspondence manner, and second locking screws 603 which penetrate through the two second disc spring sleeves 602, the two second disc spring pieces 601, the two second conducting strips 311 and the supporting piece 600;
the forming is simple, the installation is convenient, and the second disc spring plate 601, the second disc spring sleeve 602, the supporting piece 600 and the second locking screw 603 can ensure that the two side walls of the accommodating slot 32 have better resilience so as to ensure the contact reliability during closing;
a second conductive support 700 is further arranged between the tail ends of the two second conductive sheets 311, and the second conductive support 700 is electrically connected with a second incoming and outgoing line copper bar 701; the isolating switch further comprises a third disc spring 702 which extrudes the outer sides of the tail ends of the two second conductive sheets 311, a third disc spring sleeve 703 which is sleeved outside the third disc spring 702 in a one-to-one correspondence manner, and a third locking screw 704 which penetrates through the two third disc spring sleeves 703, the two third disc spring 702, the tail ends of the two second conductive sheets 311 and the second conductive support 700;
the tail ends of the two second conductive sheets 311 clamp the second conductive support 700, and are led out by the second incoming and outgoing line copper row 701 to be electrically connected, the clamping force is kept by the two third disc spring pieces 702 and the third disc spring sleeves 703, and the components are locked by the third locking screws 704, so that the installation is convenient, and the second conductive sheets 311 are kept rotatable and have larger electric connection contact area;
the insulating transmission main shaft 1 and the third locking screw 704 are coaxially arranged, and a second clamping piece 10 for clamping and fixing the tail end of the second movable blade 31 left and right is arranged on the insulating transmission main shaft 1;
preferably, the linkage assembly 4 comprises two transmission crank arms 40 respectively connected with the insulation transmission main shaft 1 and the insulation transmission driven shaft 2, and a linkage plate 41; two ends of the linkage plate 41 are respectively connected with the two transmission crank arms 40 in an eccentric rotation manner; simple structure, linkage reliability is good.
Preferably, the isolating switch further comprises a frame 8; the insulating transmission main shaft 1 and the insulating transmission driven shaft 2 are arranged on the rack 8 in parallel and are rotationally connected with the rack 8; the structure is reasonable and compact, and the assembly is convenient;
preferably, the frame 8 is made of cold-drawn steel plate, and 4 detachable hole mounting plates which are rotatably connected and mounted with the insulating transmission main shaft and the insulating transmission driven shaft are arranged on the frame.
Preferably, one or more single-phase loop insulating supports 9 are arranged on the frame 8, and a moving blade supporting seat 90 for installing and limiting the moving blade assembly 3 is arranged on the single-phase loop insulating support 9; one or more connecting legs 91 connected with the rack 8 are arranged on the single-phase loop insulating support 9, an anti-creep umbrella skirt 910 is arranged on the connecting legs 91, and a support reinforcing rib 92 is arranged on the back of the single-phase loop insulating support 9;
preferably, 3 single-phase circuit insulating supports 9 are arranged on the rack, and during installation, three single-phase circuit insulating supports 9 are screwed on the rack 8 by screws, and the movable blade supporting seat 90 is screwed on two end faces of the single-phase circuit insulating supports 9 by screws; the movable knife supporting seat 90 can be designed into a sleeve shape and is mainly used for limiting the movable knife assembly and preventing the movable knife assembly from moving;
the insulating transmission main shaft 1 and the insulating transmission driven shaft 2 are molded by casting nylon and fiber, and anti-creeping skirt umbrellas are additionally arranged at intervals, so that the surface creeping phenomenon generated at intervals of moving blades can be prevented.
A switch cabinet is provided with the isolating switch according to the isolating switch.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. An isolating switch is characterized by comprising an insulating transmission main shaft, an insulating transmission driven shaft and a moving blade assembly; the linkage assembly is used for driving the insulation transmission driven shaft to rotate reversely when the insulation transmission main shaft rotates; the movable blade assembly comprises a first movable blade and a second movable blade; the second movable blade and the first movable blade are driven by the insulating transmission main shaft and the insulating transmission driven shaft respectively to rotate so as to complete the action of switching on.
2. The isolating switch according to claim 1, wherein the tail ends of the second movable blade and the first movable blade are respectively driven by the insulating transmission main shaft and the insulating transmission driven shaft to rotate, and the front ends of the first movable blade and the second movable blade are arranged opposite to each other and close to each other to complete the switching-on action through separation and close contact of the front ends.
3. The isolating switch of claim 2, wherein the front end of the second movable blade is formed with a receiving slot for receiving the front end of the first movable blade; and one or more conductive bumps which are contacted with the first movable blade for conducting are arranged on the inner walls of the two sides of the accommodating groove.
4. The isolating switch according to claim 3, wherein the moving blade assembly further comprises a closing limiting block for stopping and limiting when the first moving blade and the second moving blade are closed; and the closing limiting block is provided with an empty avoiding groove which avoids the front end position of the first movable blade and the second movable blade when closing.
5. The isolating switch according to claim 3, wherein the first movable blade comprises two first conducting strips which are attached side by side, the front ends of the two first conducting strips are connected and locked through a locking piece, the tail ends of the two first conducting strips clamp a first conducting support piece, and the first conducting support piece is electrically connected with a first incoming and outgoing line copper bar; the isolating switch also comprises first disc spring pieces which extrude the outer sides of the tail ends of the two first conducting strips, first disc spring sleeves which are sleeved outside the first disc spring pieces in a one-to-one correspondence mode, and first locking screws which penetrate through the two first disc spring sleeves, the two first disc spring pieces, the tail ends of the two first conducting strips and the first conducting support piece; the insulating transmission driven shaft and the first locking screw are coaxially arranged, and a first clamping piece for clamping and fixing the tail end of the first movable blade in a left-right mode is arranged on the insulating transmission driven shaft.
6. The isolating switch according to claim 3, wherein the second movable blade comprises two second conductive sheets which are arranged side by side and have a spacing, and the accommodating slot is formed in the area between the front ends of the two second conductive sheets; a support piece is further arranged between the front ends of the two second conducting strips, and second disc reeds are arranged on the two outer sides of the two second conducting strips; the isolating switch also comprises second disc spring sleeves which are sleeved outside the second disc spring pieces in a one-to-one corresponding mode, and second locking screws which penetrate through the two second disc spring sleeves, the two second disc spring pieces, the two second conducting strips and the supporting piece;
a second conductive supporting piece is further arranged between the tail ends of the two second conductive sheets, and the second conductive supporting piece is electrically connected with a second incoming and outgoing line copper bar; the isolating switch also comprises third disc spring pieces which extrude the outer sides of the tail ends of the two second conducting strips, third disc spring sleeves which are sleeved outside the third disc spring pieces in a one-to-one correspondence mode, and third locking screws which penetrate through the two third disc spring sleeves, the two third disc spring pieces, the tail ends of the two second conducting strips and the second conducting supporting piece;
the insulating transmission main shaft and the third locking screw are coaxially arranged, and a second clamping piece for clamping and fixing the tail end of the second movable blade in a left-right mode is arranged on the insulating transmission main shaft.
7. The isolating switch according to any one of claims 1 to 6, wherein the linkage assembly comprises two transmission crank arms respectively connected with the insulating transmission main shaft and the insulating transmission driven shaft, and a linkage plate; and two ends of the linkage plate are respectively connected with the two transmission crank arms in an eccentric rotation manner.
8. A disconnector according to any one of claims 1-6, characterized in that the disconnector further comprises a frame; the insulating transmission main shaft and the insulating transmission driven shaft are arranged on the rack in parallel and are connected with the rack in a rotating mode.
9. The isolating switch according to claim 8, wherein one or more single-phase loop insulating supports are arranged on the rack, and a moving blade supporting seat for installing and limiting the moving blade assembly is arranged on the single-phase loop insulating supports; the single-phase circuit insulating support is provided with one or more connecting support legs connected with the rack, the connecting support legs are provided with anti-climbing umbrella skirts, and the back of the single-phase circuit insulating support is provided with support reinforcing ribs.
10. A switchgear cabinet, a disconnector according to any one of claims 1-9, characterized in that the disconnector is arranged in the switchgear cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010674649.7A CN111933474A (en) | 2020-07-14 | 2020-07-14 | Isolating switch and switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010674649.7A CN111933474A (en) | 2020-07-14 | 2020-07-14 | Isolating switch and switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111933474A true CN111933474A (en) | 2020-11-13 |
Family
ID=73312924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010674649.7A Pending CN111933474A (en) | 2020-07-14 | 2020-07-14 | Isolating switch and switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111933474A (en) |
-
2020
- 2020-07-14 CN CN202010674649.7A patent/CN111933474A/en active Pending
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