CN108807107B - Fuse switch and electrical equipment - Google Patents
Fuse switch and electrical equipment Download PDFInfo
- Publication number
- CN108807107B CN108807107B CN201811025004.XA CN201811025004A CN108807107B CN 108807107 B CN108807107 B CN 108807107B CN 201811025004 A CN201811025004 A CN 201811025004A CN 108807107 B CN108807107 B CN 108807107B
- Authority
- CN
- China
- Prior art keywords
- insulating support
- switch
- fuse
- mounting
- blade
- 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.)
- Active
Links
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims 3
- 210000003811 finger Anatomy 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 7
- 238000009413 insulation Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 239000003677 Sheet moulding compound Substances 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 210000004932 little finger Anatomy 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/48—Protective devices wherein the fuse is carried or held directly by the base
- H01H85/485—Protective devices wherein the fuse is carried or held directly by the base the fuse being provided with bayonet-type locking means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
- H01H21/54—Lever switches with blade-type contact co-operating with one or two spring-clip contacts, e.g. knife switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/22—Intermediate or auxiliary parts for carrying, holding, or retaining fuse, co-operating with base or fixed holder, and removable therefrom for renewing the fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/44—Structural association with a spark-gap arrester
Abstract
The embodiment of the invention provides a fuse switch, wherein the fuse switch comprises: a mounting base plate; an insulating support mounted on the mounting base plate, the insulating support including a first insulating support and a second insulating support; a knife blade having one end pivotally connected to the first insulating support; a movable contact mounted at an end of the blade remote from the first insulating support; the fixed contact is arranged on the second insulating support column and matched with the movable contact; a unhooking hook arranged at one end of the knife switch, which is provided with a moving contact; and a lightning arrester mounted on the mounting base plate.
Description
Technical Field
The invention relates to the technical field of electrical safety, in particular to a fuse switch and electrical equipment.
Background
The existing fuse switch is switched on for a plurality of times, so that the clamp-type moving contact of the fuse switch is loose due to poor contact during switching on. In the prior art, the moving contact and the fixed contact may be relatively positioned close to each other so as to make the moving contact and the fixed contact more closely contacted, but the separation operation of the fixed contact and the moving contact may be difficult.
Disclosure of Invention
Accordingly, an objective of the embodiments of the present invention is to provide a fuse switch and an electrical device.
The embodiment of the invention provides a fuse switch, which comprises:
a mounting base plate;
an insulating support mounted on the mounting base plate, the insulating support including a first insulating support and a second insulating support;
a knife blade having one end pivotally connected to the first insulating support;
a movable contact mounted at an end of the blade remote from the first insulating support;
the fixed contact is arranged on the second insulating support column and matched with the movable contact;
a unhooking hook arranged at one end of the knife switch, which is provided with a moving contact; and
and the lightning arrester is arranged on the mounting bottom plate.
Optionally, the moving contact includes:
the movable contact is provided with a protruding part, and the protruding part is contacted with the fixed contact.
The movable contact can be better contacted with the fixed contact by arranging the two movable contact clamping pieces, and in addition, the movable contact is provided with a bulge, so that the contact effect of the fixed contact and the movable contact is further improved.
Optionally, the moving contact clip includes:
a first connection portion;
a protruding portion connected to the first connecting portion;
and the second connecting part is connected with one end of the protruding part far away from the first connecting part.
The movable contact clamping piece is divided into three parts, so that the movable contact clamping piece can form a relatively stable structure, and the first connecting part and the second connecting part are arranged on two sides of the protruding part. The protruding portion can be better contacted with the fixed contact.
Optionally, an end of the unhooking hook far away from the knife switch is provided with a hand portion, and the hand portion is provided with a through hole.
The hand-held part can enable related personnel to operate the switch blade more conveniently, so that the moving contact and the fixed contact are separated and closed.
Optionally, the lightning protection device comprises a lightning protection base and a lightning arrester;
one end of the lightning protection base is connected with the edge of the mounting bottom plate;
the arrester is installed at the other end of the lightning protection base.
The safety of the fuse switch can be improved by additionally arranging the lightning arrester.
Optionally, the knife switch comprises:
two insulating plates oppositely arranged;
two fuses arranged outside the insulating plate, wherein the length of the fuses is equal to that of the fuse;
and the splitter plate is arranged between the two insulating plates, one end of the splitter plate is contacted with one of the fuse pieces, and the other end is contacted with the other fuse piece.
The fuse switch adopts the double-arm knife switch, can make the knife switch firm more reliable, even receive the fracture part after the object striking, another part still can continue emergency use, can change when the power consumption is not strained, improves fuse switch's validity. In addition, the current can be uniformly led to the fusible links at two sides by arranging the current dividing piece.
Optionally, the fuse switch further includes:
and the hook is arranged on the first insulating support column and is connected with the switch blade.
Optionally, the hook includes:
the first hanging part and the second hanging part are oppositely arranged;
the middle part of the second hanging part is connected with the first hanging part, and the first hanging part and the second hanging part are matched and connected with the switch blade.
The hook is arranged into three parts, so that the structure of the hook is more stable, and the hook can also better support the knife switch.
Optionally, the fuse switch further includes:
and the carbon brush assembly is arranged on the switch blade.
When large current is generated and an arc is generated, the carbon brush assembly can play a role in arc extinction, so that the fuse piece and other parts are protected.
In a second aspect, an embodiment of the present invention further provides an electrical apparatus, including the above-described fuse switch.
Compared with the prior art, the fuse switch and the electrical equipment have the advantages that the unhooking hook is further arranged on the fuse switch combining the fuse switch function and the lightning protection function, so that even if the moving contact and the fixed contact are arranged to be in closer contact, related personnel can conveniently open or close the moving contact and the fixed contact under the action of the unhooking hook.
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a fuse switch according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a mounting base plate of a fuse switch according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a moving contact of a fuse switch according to an embodiment of the present invention.
Fig. 4 is a schematic view of a hook of a fuse switch according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a hook of a fuse switch according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a hook of a fuse switch according to an embodiment of the present invention.
Icon: 100-mounting a bottom plate; 101-a first mounting hole; 110-a first mounting plate; 120-a second mounting plate; 121-a first part; 122-a second portion; 123-a second mounting hole; 200-insulating supports; 210-first insulating pillars; 220-a second insulating support; 300-knife switch; 310-insulating plates; 320-fuse pieces; 330-a diverter blade; 410-a lightning protection base; 411-third mounting holes; 420-lightning arrester; 500-stationary contact; 600-unhooking; 610-a hand; 611-closed loop through holes; 612-open loop vias; 620-a mounting portion; 700-moving contact; 710—a first moving contact clip; 711-first connection; 712-first protrusions; 713-a second connection; 720-a second moving contact clamping piece; 721-a third connection; 722-a second boss; 723-fourth connection; 730-blind holes; 740-raised surface; 750-elastic bolts; 751-a fixing section; 752-elastic part; 760-mounting holes; 800-hanging hook; 810-a first hanger; 811-a first open loop hook; 820-a second hanger; 821-second open loop hook; 830-middle; 831-mounting location; 900-carbon brush assembly.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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 should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or directions or positional relationships that are conventionally visited when the inventive product is used, are merely for convenience in describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limitations of the present invention.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, or may be internal communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a fuse switch according to an embodiment of the present invention. As shown in fig. 1, the fuse switch includes: the lightning protection device comprises a mounting base plate 100, an insulating support 200, a knife 300, a moving contact 700, a fixed contact 500, a unhooking hook 600 and a lightning protection device.
Wherein an insulation support 200 is mounted on the mounting base plate 100, the insulation support 200 includes a first insulation support 210 and a second insulation support 220.
One end of the knife 300 is pivoted with the first insulating support 210, and the other end of the knife 300 is connected with the movable contact 700. The fixed contact 500 is mounted on the second insulating support 220, and the fixed contact 500 may be engaged with the moving contact 700. The unhooking hook 600 is mounted at one end of the blade 300 where the moving contact 700 is provided. A lightning arrester is mounted on the mounting base plate 100.
In this embodiment, the lightning protection device includes a lightning protection base 410 and a lightning arrester 420.
One end of the lightning protection base 410 is connected with the edge of the mounting base plate 100; the lightning arrester 420 is installed at the other end of the lightning arrester base 410.
In this embodiment, a plurality of lightning arresters may be provided, three of which are shown in fig. 4. In one embodiment, the number of lightning arresters may be the same as the number of groups of insulating struts 200.
Further, the fuse switch may further include a connection plate (not shown) installed between the lightning base 410 and the lightning arrester 420. The connection plate is connected to a plurality of lightning bases 410.
Further, as shown in fig. 2, a third mounting hole 411 is provided on the lightning protection base 410, and the lightning arrester 420 is mounted with the lightning protection base 410 through the third mounting hole 411.
In this embodiment, a plurality of groups of first mounting holes 101 are provided on the mounting base plate 100. As shown in fig. 2, each set of first mounting holes 101 may be used to mount two insulating struts 200, thereby providing a mounting location for one insulating strut 200. The plurality of groups of first mounting holes 101 are additionally arranged, so that the position adjustability in mounting is improved, and the concrete pole is also suitable for mounting various concrete poles.
In one example, two insulating struts 200 form a group. A set of insulating struts 200 are mounted at a set of first mounting holes 101. Among them, porcelain insulator 200 may be used.
Wherein the insulation support 200 may be detachably installed at the first installation hole 101. For example, the insulating support 200 may be mounted at the first mounting hole 101 by a fixing member such as a screw. Further, the insulating support 200 may be provided with a fixing member for mounting, which is engaged with the first mounting hole 101, and the insulating support 200 may be mounted to the mounting base plate 100 by the fixing member. Of course, it is understood that the insulating support 200 may be removably mounted to the mounting base 100 in other manners as well. Through with insulating pillar 200 detachably installation, when needing to remove the fusing switch, dismantle insulating pillar 200 with mounting plate 100, conveniently remove or change the fusing switch. For example, the insulating support 200 may be mounted on the mounting base plate 100 using mb×20 bolts, or the insulating support 200 may be removed and replaced.
When the insulating support 200 is detachably mounted on the mounting base plate 100 to facilitate the damage of the insulating support 200, the insulating support 200 can be independently replaced without replacing the fuse switch, thereby greatly improving the utilization rate of the fuse switch and saving the cost of the fuse switch.
A set of insulating struts 200 may be mounted on the mounting base plate 100 through any one of the sets of first mounting holes 101, the set of insulating struts 200 including two insulating struts 200.
As shown in fig. 2, in this embodiment, the mounting board 100 includes: a first mounting plate 110 for mounting the insulating support 200. Wherein the first mounting hole 101 is provided on the first mounting plate 110. In the prior art, each insulating support 200 is correspondingly provided with a mounting hole, the positions of the insulating supports 200 are relatively fixed, and a plurality of groups of first mounting holes 101 are formed in each first mounting plate 110 on the mounting base plate 100 provided in this embodiment. To accommodate the installation requirements of the different insulating struts 200.
For example, an insulating support 200 may be mounted at the first mounting hole 101 of the first mounting plate 110 at the position of the first mounting hole 101 of the reference numeral shown in fig. 2, and another insulating support 200 mated therewith may be mounted at the other end of the first mounting plate 110 at the position of the first mounting hole 101 mated therewith to form a set of insulating supports 200.
Further, each of the first mounting plates 110 may include a first plate, a second plate, and a third plate. Wherein the first mounting hole 101 may be provided on the second plate. In one example, the first plate is disposed vertically on one side of the second plate and the third plate is disposed vertically on the other side of the second plate.
Wherein the mounting plate 100 includes a plurality of first mounting plates 110, each first mounting plate 110 may be used to mount a set of insulating struts 200. In this embodiment, a plurality of sets of first mounting holes 101 are provided on each first mounting plate 110, so that one set of insulating supports 200 can be mounted at any one set of first mounting holes 101 of one first mounting plate 110.
The first mounting plate 110 shown in fig. 3 is provided with two sets of first mounting holes 101, and one set of insulating struts 200 may be mounted at any one set of first mounting holes 101 in the two sets of first mounting holes 101, so that the mounting positions of the insulating struts 200 may be adjusted to adapt to different mounting requirements. Of course, it is understood that more sets of first mounting holes 101 may be provided on each first mounting plate 110, thereby enabling more positions of the insulating support 200 to be switched.
In this embodiment, the mounting base plate 100 includes: a plurality of first mounting plates 110, each first mounting plate 110 for mounting a set of insulating supports 200 and a blade 300.
In this embodiment, the mounting board 100 includes three first mounting plates 110, and each of the three first mounting plates 110 is used for mounting a set of insulating columns 200 and one blade 300 to form a three-phase blade 300. In the example shown in fig. 3, three first mounting plates 110 are provided on the mounting base plate 100.
Each of the first mounting plates 110 is provided with a set of insulating supports 200 to form a single-phase blade 300, in the example shown in the figure, three-phase blades 300 are formed, and the insulating supports 200 are mounted on a base plate to form A, B, C-phase blades 300, and the blades 300 have a certain interval.
In this embodiment, the lightning protection device includes a lightning protection base 410 and a lightning arrester 420.
One end of the lightning protection base 410 is connected with the edge of the mounting base plate 100; the lightning arrester 420 is installed at the other end of the lightning arrester base 410.
In this embodiment, a plurality of lightning arresters may be provided, three of which are shown in fig. 4. The number of lightning arresters may be the same as or different from the number of sets of insulating struts 200.
As shown in fig. 2, a second mounting plate 120 for mounting the lightning arrester is further provided on the mounting base plate 100.
In this embodiment, the second mounting plate 120 includes a first portion 121 connected to the first mounting plate 110, and a second portion 122 for mounting the lightning arrester.
In this embodiment, the first portion 121 and the second portion 122 are in an "L" shape.
Wherein, the vertical part in the "L" shape is connected with the first mounting plate 110, and the horizontal part in the "L" shape is used for mounting the base. By setting the second mounting plate 120 to be "L" shaped, the space occupied by the fuse switch in the vertical direction is prevented from being larger.
In this embodiment, the second portion 122 of the second mounting plate 120 is provided with a plurality of second mounting holes 123; the lightning arrester is mounted at any one of the second mounting holes 123.
The installation position of the lightning arrester can be effectively adjusted by arranging a plurality of second installation holes 123, so that the requirements of different scenes can be met.
Fig. 3 is a schematic structural diagram of a moving contact 700 according to an embodiment of the present invention. As shown in fig. 3, the moving contact 700 includes: two moving contact clamping pieces which are oppositely arranged.
Two oppositely arranged moving contact clamping pieces can be mutually matched and connected through bolts, and in one example, M8 x 55 bolts can be selected.
In this embodiment, the moving contact 700 is provided with a protruding portion, and the protruding portion can contact the fixed contact 500 (see fig. 1).
Wherein the stationary contact 500 may be a metal alloy, for example, a copper alloy.
In this embodiment, the first moving contact clip 710 includes: a first connection part 711, a first protrusion part 712, and a second connection part 713. The first protrusion 712 is disposed between the first connection portion 711 and the second connection portion 713.
In one embodiment, the first connection part 711, the first protrusion part 712, and the second connection part 713 are welded together.
In one embodiment, the first protrusion 712 may be in a shape of "", and the first and second connection portions 711 and 713 may be in a shape of "i". The first connection part 711 is connected to an opening side of an upper edge of the first protrusion part 712, and the second connection part 713 is connected to an opening side of a lower edge of the first protrusion part 712. In another embodiment, the first protrusion 712 may be a trapezoid, and the first connection portion 711 and the second connection portion 713 are connected at both ends of a lower bottom of the trapezoid. In other embodiments, the first protrusion 712 may also be other protrusion structures, such as semi-circular, inferior arc, etc.
In this embodiment, the second moving contact clip 720 includes: a third connection portion 721, a second protrusion portion 722, and a fourth connection portion 723. The second boss 722 is disposed between the third connection portion 721 and the fourth connection portion 723.
In the present embodiment, the second protruding portion 722 is similar to the structure of the first protruding portion 712, and specific reference may be made to the structure of the first protruding portion 712. The connection relationship between the third connection portion 721 and the fourth connection portion 723 and the second protrusion portion 722 is similar to the connection relationship between the first connection portion 711 and the second connection portion 713 and the first protrusion portion 712, and specific reference may be made to the description of the connection relationship between the first connection portion 711 and the second connection portion 713 and the first protrusion portion 712, which is not repeated here.
According to the mechanical wedge type inlay principle, the movable contact clamping piece is arranged to be provided with a convex arc shape to be in firm contact with the fixed contact 500, so that a worker can operate the fusing switch to close easily.
In this embodiment, as shown in fig. 3, the protruding portion is provided with a blind hole 730, and a protruding surface 740 protruding with respect to the protruding portion is provided at the blind hole 730. In detail, the convex surface 740 of the first moving contact jaw 710 is disposed opposite to the convex surface 740 of the second moving contact jaw 720. Further, the protruding surface 740 of the first moving contact clamping piece 710 is disposed on a surface of the first moving contact clamping piece 710 close to the second moving contact clamping piece 720, and the protruding surface 740 of the second moving contact clamping piece 720 is disposed on a surface of the second moving contact clamping piece 720 close to the first moving contact clamping piece 710.
In this embodiment, the moving contact 700 may further include: the elastic bolt 750 is installed on the jaws of the moving contacts 700, the elastic bolt 750 includes a fixing portion 751 and an elastic portion 752, the elastic portion 752 is installed at the outer side of one of the jaws of the moving contacts 700, and the fixing portion 751 is installed at the outer side of the other moving contact 700 through one end of the jaws of the two moving contacts 700.
In this embodiment, the elastic portion 752 is sleeved outside the fixing portion 751, one end of the elastic portion 752 abuts against the outer side of one of the moving contact 700 clips, one end of the elastic portion 752 abuts against one end of the fixing portion 751, and the other end of the fixing portion 751 passes through one end of the two moving contact 700 clips and abuts against the outer side of the other moving contact 700 clip relatively far from the moving contact 700 clip opposite to the other moving contact 700 clip.
Further, the elastic portion 752 may be a spring, and the fixing member may be a nut including a rod body and disposed at both ends of the rod body.
The first moving contact clamping piece 710 and the second moving contact clamping piece 720 are provided with through holes for the rod body to pass through. The spring is sleeved on the rod body of the fixing part 751, one end of the spring is abutted against one of the nuts, and the other end of the spring is abutted against one surface of the second moving contact clamping piece 720, which is far away from the first moving contact clamping piece 710; the nut at the end of the fixing portion 751 away from the spring abuts against the side of the first moving contact clamping piece 710 away from the second moving contact clamping piece 720.
In this embodiment, when the fuse is turned off and closed, the fixed contact is clamped between the first moving contact clamping piece 710 and the second moving contact clamping piece 720, and the elastic portion 752 of the elastic bolt 750 gives an elastic force to the clamping piece of the moving contact 700, so that the moving contact 700 can tightly clamp the fixed contact.
In this embodiment, the moving contact 700 includes two elastic bolts 750, and the two elastic bolts 750 are installed at both sides of the protruding portion.
In this embodiment, the clips of the moving contact 700 have a symmetrical structure.
In this embodiment, the moving contact 700 includes two elastic bolts 750, and the two elastic bolts 750 are symmetrically installed at two sides of the protruding portion.
The elastic bolt 750 enables the arc-shaped copper clamping piece to be in contact and fixed with the fixed contact copper sheet, and the superposition of the elastic force of the spring and the arc-shaped tension enables the closing of the fuse switch to be firm and reliable, and meanwhile, the closing operation of workers is light. The operator does not need to pull the fusing switch with excessive force, and can easily pull the fusing switch open and close.
As shown in fig. 4, the fuse switch in this embodiment may further include a hook 600.
In this embodiment, the unhooking hook 600 is mounted at one end of the blade 300 where the moving contact 700 is provided.
In this embodiment, as shown in fig. 4, the hook 600 is provided with a hand 610 at an end remote from the knife 300.
In this embodiment, referring again to fig. 4, the unhooking hook 600 includes a mounting portion 620 and a holding portion 610, the mounting portion 620 is connected to the blade 300, and the mounting portion 620 is combined with the holding portion 610 to form a T shape.
In this embodiment, the armrest 610 is provided with a through hole.
In one embodiment, the armrest 610 may be provided with three through holes. In one use scenario, three through holes are respectively penetrated by the ring finger, the middle finger and the index finger of the user, and the user can realize closing or separating the moving contact 700 and the fixed contact 500 through the stress of the three fingers.
In another embodiment, the armrest 610 may be provided with two through holes. In one use scenario, the two through holes are respectively penetrated by the middle finger and the index finger of the user, and the user can realize closing or separating the moving contact 700 and the fixed contact 500 by the stress of the two fingers.
In yet another embodiment, the armrest 610 may be provided with four through holes. In one use scenario, the four through holes are respectively penetrated by the little finger, the ring finger, the middle finger and the index finger of the user, and the user can realize closing or separating the moving contact 700 and the fixed contact 500 through the stress of the four fingers.
In this embodiment, as shown in fig. 4, at least two through holes are provided on the armrest 610, including a closed-loop through hole 611 and an open-loop through hole 612.
In this embodiment, an open-loop through hole 612 is provided at the edge of the armrest 610.
Further, at least one hole is provided on the mounting portion 620. A fixing member passes through the mounting hole 760 (refer to fig. 1) of one of the moving contact clips, the hole of the mounting portion 620, and the mounting hole 760 of the other moving contact clip to mount the clip 600 between the two moving contact clips.
In this embodiment, the hanger 800 is mounted on the first insulating support 210, and the hanger 800 is connected to the blade 300.
In this embodiment, as shown in fig. 5, the hook 800 includes: a first hanging part 810 and a second hanging part 820 which are oppositely arranged; an intermediate portion 830 connected to the second hooking portion 820 of the first hooking portion 810, and the first hooking portion 810 and the second hooking portion 820 are coupled to the blade 300 in cooperation.
In one embodiment, the first hanging part 810 and the second hanging part 820 may have a plate-shaped structure, and the first hanging part 810 and the second hanging part 820 may be parallel to each other. Further, the middle portion 830 may have a plate-shaped structure, and the middle portion 830 may be perpendicular to both the first hanging portion 810 and the second hanging portion 820.
In this embodiment, a first open loop hook 811 is disposed at an end of the first hanging portion 810 away from the middle portion 830, a second open loop hook 821 is disposed at an end of the second hanging portion 820 away from the middle portion 830, and the first open loop hook 811 and the second open loop hook 821 cooperate with the knife 300 to hook the knife 300.
In this embodiment, the opening size of the first open loop hooks 811 and the second open loop hooks 821 is smaller than one-fourth of the loop formed by the open loop hooks.
Further, the openings of the first open loop hook 811 and the second open loop hook 821 are inclined downward. Further, obliquely downward means a direction toward the second insulating support 220 when the hanger is in the mounted state.
In this embodiment, the first insulating support 210 may also have a mounting plate (not numbered in fig. 1, see fig. 1) mounted thereon, and the hook 800 is mounted on the mounting plate.
Further, as shown in fig. 3, an installation site 831 is provided on the middle portion 830 of the hook 800. The mounting condition may be that the fasteners pass through the mounting locations 831 and the mounting plate to effect mounting of the hanger 800 to the mounting plate.
In this embodiment, as in fig. 1 or 2, both ends of the blade 300 are connected with the moving contact 700, and the hook 800 is connected with the blade 300 by hanging and buckling the moving contact 700 near one end of the hook 800 of the blade 300, so as to realize connection with the blade 300.
In this embodiment, the fuse switch includes: a connection bolt (not shown) passes through the hook 800 and the moving contact 700 of the blade near one end of the hook to connect the hook 800 with the moving contact 700 of the blade 300 near one end of the hook 800, thereby achieving connection with the blade 300.
In this embodiment, considering that the knife 300 may be easily damaged locally in some cases, the knife may be provided in two parts, and the flow of the current may be maintained using the other part after the damage of one part.
Specifically, as shown in fig. 6, the blade 300 may include: two insulating plates 310 disposed opposite to each other; two fuse pieces 320 disposed outside the insulating plate 310, wherein the fuse pieces 320 have a length; and a shunt sheet 330 disposed between the two insulating sheets 310, one end of the shunt sheet 330 contacting one of the fuse sheets 320 and the other end contacting the other fuse sheet 320.
The insulating plate 310 can be a SMC (Sheet molding compound) insulating plate, and has high mechanical strength, flame retardance and leakage resistance; the high arc resistance, dielectric strength and voltage resistance better replace porcelain strips in the HR20 type in the prior art, and improve the performance of the knife 300.
The fuse 320 can select fuses 320 with different specifications according to different rated currents of different transformers, so that large current is prevented from impacting electric equipment, and the protection effect on the electric equipment is achieved.
Wherein the splitter 330 can be composed of two parts, a first part and a second part, respectively. The first portion and the second portion are joined to form an included angle. One end of the first portion is connected to the second portion, and the other end contacts one of the fusible links 320; the second portion is connected to another fuse 320. The current is split to two fuses by two parts. Further, the first portion and the second portion may have a plate-like structure having the same shape. The top end of the angle formed by the connection of the first portion and the second portion may be directed toward one end of the first insulating support 310.
Referring again to fig. 1, the fuse switch may further include: a carbon brush assembly 900 mounted on the blade 300.
When the switch is closed and opened, and when a large current is generated to generate an arc, the carbon brush assembly 900 plays a role of arc extinction to protect the fuse piece 320 and parts.
Further, a plurality of carbon brush assemblies 900 may be installed on the blade 300.
The fusing switch provided by the embodiment can realize the following beneficial effects: 1. the opening and closing of the fusing switch are conveniently pulled by an operator through unhooking, and whether the low-voltage fusing is closed in place or not is clearly judged. 2. By providing the knife 300 in two parts, the components made up of the two high strength insulating plates 310 and the fuse piece 320 are less prone to power failure due to breakage of the porcelain insulator strips. 3. The fuse switch adopts the bow-shaped clip type moving contact to be in firm contact with the copper sheet. 4. When the fuse is fused, only the arc-shaped hanging type clamp type movable contact of the single-phase fuse switch needs to be replaced, so that the operation is quick and convenient. 5. Compared with the old HR20 type and other fusing switches (low-voltage knife-fuse switches), the switch is lighter and more convenient for the transmission and installation of workers. 6. The removable insulating support 200 is convenient to be broken by impact in the transportation and installation processes and in operation, and is convenient to be replaced, so that a part of parts are prevented from being damaged, and the whole set of fusing switch is replaced. 7. A 0.4kV arrester 420 may be installed to avoid damage to the metering device due to impact of high current caused by transformer failure, lightning strike, etc. 8. The device has high economic benefit, and when the single-phase fuse switch is damaged, the hanging type clamp type moving contact is not required to be replaced, only the single phase is required to be replaced, and the damage and replacement cost is greatly saved.
The application also provides an electrical device, which in this embodiment includes a fuse switch.
The fuse switch in this embodiment is similar to the fuse switch in the previous embodiment, and specific reference may be made to the description in the previous embodiment, and details are not repeated here.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A fuse switch, comprising:
a mounting base plate;
an insulating support mounted on the mounting base plate, the insulating support including a first insulating support and a second insulating support;
a knife blade having one end pivotally connected to the first insulating support;
a movable contact mounted at an end of the blade remote from the first insulating support;
the fixed contact is arranged on the second insulating support column and matched with the movable contact;
a unhooking hook arranged at one end of the knife switch, which is provided with a moving contact; and
a lightning arrester mounted on the mounting base plate;
the blade includes:
two insulating plates oppositely arranged;
two fused pieces arranged outside the insulating plate, wherein the lengths of the two fused pieces are consistent;
the split piece is arranged between the two insulating plates, one end of the split piece is contacted with one fuse piece, and the other end of the split piece is contacted with the other fuse piece;
the diverter blade includes a first portion and a second portion; the first part and the second part are connected to form an included angle; one end of the first part is connected with the second part, and the other end of the first part contacts one of the fusible links; the second part is connected with another fuse piece; the current is divided into two fused pieces through the first part and the second part; the first part and the second part are plate-shaped structures with the same shape; the top end of the included angle formed by the connection of the first part and the second part faces one end of the first insulating support.
2. The fuse switch of claim 1, wherein the movable contact comprises:
the movable contact is provided with a protruding part, and the protruding part is contacted with the fixed contact.
3. The fuse switch of claim 2, wherein the moving contact clip comprises:
a first connection portion;
a protruding portion connected to the first connecting portion;
and the second connecting part is connected with one end of the protruding part far away from the first connecting part.
4. The fuse switch of claim 1, wherein an end of the hook remote from the blade is provided with a hand portion having a through hole.
5. The fuse switch of claim 1, wherein the lightning conductor comprises a lightning conductor base and a lightning conductor;
one end of the lightning protection base is connected with the edge of the mounting bottom plate;
the arrester is installed at the other end of the lightning protection base.
6. The fuse switch of claim 1, further comprising:
and the hook is arranged on the first insulating support column and is connected with the switch blade.
7. The fuse switch of claim 6, wherein the hook comprises:
the first hanging part and the second hanging part are oppositely arranged;
the first hanging part and the second hanging part are connected with the middle part of the second hanging part, and the first hanging part and the second hanging part are matched and connected with the switch blade.
8. The fuse switch of claim 1, further comprising:
and the carbon brush assembly is arranged on the switch blade.
9. An electrical device comprising a fuse switch as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811025004.XA CN108807107B (en) | 2018-09-04 | 2018-09-04 | Fuse switch and electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811025004.XA CN108807107B (en) | 2018-09-04 | 2018-09-04 | Fuse switch and electrical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108807107A CN108807107A (en) | 2018-11-13 |
| CN108807107B true CN108807107B (en) | 2024-01-09 |
Family
ID=64082016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811025004.XA Active CN108807107B (en) | 2018-09-04 | 2018-09-04 | Fuse switch and electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108807107B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1575067A1 (en) * | 2004-03-10 | 2005-09-14 | Areva T&D S.p.A. | Pivoting earthing switch with direct insertion and simple movement |
| CN201262932Y (en) * | 2008-09-26 | 2009-06-24 | 邵俊辉 | Snap type low-voltage isolation fusing knife brake |
| CN202042386U (en) * | 2011-05-12 | 2011-11-16 | 辽宁省电力有限公司阜新供电公司 | Transition plate type outdoor alternating-current low-voltage isolating switch |
| CN202957180U (en) * | 2012-12-07 | 2013-05-29 | 坦帕（福建）电气有限公司 | Fused type isolating switch |
| CN203312223U (en) * | 2013-05-28 | 2013-11-27 | 浙江伏尔特电器有限公司 | Outdoor alternating-current high-pressure expulsion fuse |
| CN103500680A (en) * | 2013-10-10 | 2014-01-08 | 德基申（厦门）电气有限公司 | Low-voltage fuse type isolating switch |
| CN203706988U (en) * | 2014-02-14 | 2014-07-09 | 唐恩(厦门)电气有限公司 | Low voltage fuse type isolation switch |
| CN104078849A (en) * | 2014-07-25 | 2014-10-01 | 国家电网公司 | Mounting bracket for lightning arrester |
| CN203966929U (en) * | 2014-06-30 | 2014-11-26 | 辽宁华隆电力科技有限公司 | Face touches type low-tension fuse isolating switch |
| CN204045469U (en) * | 2014-08-07 | 2014-12-24 | 广东北江开关厂有限公司 | A kind of outdoor low voltage isolating switch combination unit |
| CN205039105U (en) * | 2015-07-06 | 2016-02-17 | 河南博宇电器设备有限公司 | Switch switch of loading greatly |
| KR20170042852A (en) * | 2015-10-12 | 2017-04-20 | 한국단자공업 주식회사 | Multi fuse |
| CN207367850U (en) * | 2017-11-09 | 2018-05-15 | 国网辽宁省电力有限公司营口供电公司 | 10kV distribution transformer low-voltage module formula fuse devices |
| CN108305812A (en) * | 2018-02-01 | 2018-07-20 | 贵州电网有限责任公司 | The novel dismountable low pressure isolation switch for changing safety plate |
| CN208478272U (en) * | 2018-09-04 | 2019-02-05 | 广东电网有限责任公司 | Fuse cutout and electrical equipment |
-
2018
- 2018-09-04 CN CN201811025004.XA patent/CN108807107B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1575067A1 (en) * | 2004-03-10 | 2005-09-14 | Areva T&D S.p.A. | Pivoting earthing switch with direct insertion and simple movement |
| CN201262932Y (en) * | 2008-09-26 | 2009-06-24 | 邵俊辉 | Snap type low-voltage isolation fusing knife brake |
| CN202042386U (en) * | 2011-05-12 | 2011-11-16 | 辽宁省电力有限公司阜新供电公司 | Transition plate type outdoor alternating-current low-voltage isolating switch |
| CN202957180U (en) * | 2012-12-07 | 2013-05-29 | 坦帕（福建）电气有限公司 | Fused type isolating switch |
| CN203312223U (en) * | 2013-05-28 | 2013-11-27 | 浙江伏尔特电器有限公司 | Outdoor alternating-current high-pressure expulsion fuse |
| CN103500680A (en) * | 2013-10-10 | 2014-01-08 | 德基申（厦门）电气有限公司 | Low-voltage fuse type isolating switch |
| CN203706988U (en) * | 2014-02-14 | 2014-07-09 | 唐恩(厦门)电气有限公司 | Low voltage fuse type isolation switch |
| CN203966929U (en) * | 2014-06-30 | 2014-11-26 | 辽宁华隆电力科技有限公司 | Face touches type low-tension fuse isolating switch |
| CN104078849A (en) * | 2014-07-25 | 2014-10-01 | 国家电网公司 | Mounting bracket for lightning arrester |
| CN204045469U (en) * | 2014-08-07 | 2014-12-24 | 广东北江开关厂有限公司 | A kind of outdoor low voltage isolating switch combination unit |
| CN205039105U (en) * | 2015-07-06 | 2016-02-17 | 河南博宇电器设备有限公司 | Switch switch of loading greatly |
| KR20170042852A (en) * | 2015-10-12 | 2017-04-20 | 한국단자공업 주식회사 | Multi fuse |
| CN207367850U (en) * | 2017-11-09 | 2018-05-15 | 国网辽宁省电力有限公司营口供电公司 | 10kV distribution transformer low-voltage module formula fuse devices |
| CN108305812A (en) * | 2018-02-01 | 2018-07-20 | 贵州电网有限责任公司 | The novel dismountable low pressure isolation switch for changing safety plate |
| CN208478272U (en) * | 2018-09-04 | 2019-02-05 | 广东电网有限责任公司 | Fuse cutout and electrical equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108807107A (en) | 2018-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200965855Y (en) | Outdoor AC high voltage jet type fuse | |
| EP2791953A1 (en) | Circuit breaker, circuit breaker terminal lug cover, and method of protecting a terminal lug | |
| CN204045469U (en) | A kind of outdoor low voltage isolating switch combination unit | |
| CN108807107B (en) | Fuse switch and electrical equipment | |
| CN208478272U (en) | Fuse cutout and electrical equipment | |
| CN201655727U (en) | Semi-automatic synchronized drop-out fuse | |
| CN201498291U (en) | Detachable lightning arrester | |
| CN202487475U (en) | Low-voltage fusing type disconnecting switch | |
| CN105140878A (en) | High voltage falling type fuse over-current switching protective device | |
| CN206312849U (en) | SPD back-up protections device and lightning protection device | |
| CN208298742U (en) | Fuse cutout and electrical equipment | |
| RU138350U1 (en) | LINEAR CONTACT ASSEMBLY FOR HIGH VOLTAGE DISCONNECTOR (OPTIONS), ARC DEVICE FOR THIS DISCONNECTOR AND HIGH VOLTAGE DISCONNECTOR (OPTIONS) | |
| CN208189469U (en) | Disconnecting switch equipped with arc initiation device | |
| KR101239741B1 (en) | Knife-blade of contacting apparatus for apartment house | |
| CN208385291U (en) | A kind of improvement type outdoor high-voltage isolating switch | |
| CN202120846U (en) | Novel dropout type fuse | |
| CN110970831A (en) | 10kV live working multifunctional insulation device | |
| CN217690925U (en) | Isolating switch convenient to operate | |
| CN209804577U (en) | Overcurrent fusing protection device for high-voltage line | |
| CN111244812A (en) | Portable grounding device for insulating overhead ground wire | |
| CN216362123U (en) | Excitation variable-voltage fuse for generator set | |
| CN216435777U (en) | Assembly clamping device of vacuum arc-extinguishing chamber | |
| CN211654668U (en) | High-voltage isolating switch knife switch assembly riveting structure | |
| CN213781909U (en) | Base for fixing high-voltage alternating-current isolating switch | |
| CN211790420U (en) | 10kV live working multifunctional insulation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |