CN102436955B - Low-pressure fusing disconnecting switch - Google Patents
Low-pressure fusing disconnecting switch Download PDFInfo
- Publication number
- CN102436955B CN102436955B CN201210007742.8A CN201210007742A CN102436955B CN 102436955 B CN102436955 B CN 102436955B CN 201210007742 A CN201210007742 A CN 201210007742A CN 102436955 B CN102436955 B CN 102436955B
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- plug
- contact
- strip plate
- moving contact
- silicon rubber
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Abstract
The invention discloses a low-pressure fusing disconnecting switch. The low-pressure fusing disconnecting switch comprises a base (1), a silicon rubber insulator support column (2), a knife switch arranged on the silicon rubber insulator support column (2), a fusing body (10) and a wiring board (11), wherein the knife switch comprises a moving contact (3), a static contact (9), two knife switch plates (4), a pull ring (6) and a pressure spring (13); the side face of the moving contact (3) is provided with a moving contact concave touch surface (17), and/or the side face of the static contact (9) is provided with an annular concave touch surface (18); the contact surface of each knife switch plate (4) and the moving contact (3) is provided with a front-end convex touch surface (16), and the contact surface of the each knife switch plate (4) and the static contact (3) is provided with an annular concave touch surface (15); and the low-pressure fusing disconnecting switch also comprises a flash guard. The low-pressure fusing disconnecting switch provided by the invention has the advantages of simple structure, convenience in use, safety, reliability, low processing cost and large contact area; when the switch is opened and closed, the electric arc can not be generated, thereby prolonging the service life.
Description
Technical field
The present invention relates to a kind of isolating switch, be specifically related to a kind of low-pressure fusing disconnecting switch.
Background technology
Existing low-pressure fusing disconnecting switch, by mounting seat, porcelain insulator, connecting plate, enter line card, knife switch, fuse, device of operating a switch form, this unit switch is arranged on two porcelain insulators by after knife switch and fuse parallel connection by connecting plate, knife switch is made up of with the connecting elements being arranged at termination insulation porcelain rod, and fuse is arranged between the connector of described insulation porcelain rod termination.If Chinese Patent Application No. is that CN200720201627.9 discloses a kind of outdoor low pressure fusing switch, include base, be arranged on the static contact seat on base and moving contact seat, and fuse link, described moving contact seat is hinged with the blade that centre has groove, one end of this groove is enclosed within the both sides of moving contact seat, the other end connects with the both sides end face of static contact seat when switch closes, at the two ends of groove, the bolt that external diameter is set with compression spring is housed, blade is withstood in one end of compression spring, and one end that the other end withstands this blade of bolt connects with static contact seat when switch closes; Fuse link is fixed between moving contact seat and connecting plate; Static contact seat, moving contact seat and connecting plate are arranged on post insulator respectively.But this type of isolating switch is due to when switch closes, usually that contact area is very little, only have even any or a linear contact lay, can not well be suitable on the circuit of low-voltage, big current, when working long hours, contact-making surface can be overheated, easy burn-out contact, therefore change fuse loaded down with trivial details, there is potential safety hazard and useful life shorter, operation and maintenance cost is high.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, provide that a kind of structure is simple, esy to use, safe and reliable, processing cost is low, contact area is large, produces and the low-pressure fusing disconnecting switch of long service life during folding switch without electric arc.
To achieve these goals, present invention employs following technical scheme: low-pressure fusing disconnecting switch, the knife switch comprising base, flash guard, fuse-link, terminal block, silicon rubber insulator pillar and be arranged on silicon rubber insulator pillar, knife switch comprises moving contact, fixed contact, two shoe brake knife plates, draw ring and compression spring, the contact-making surface that described plug-in strip plate contacts with moving contact is provided with convex tactile face, front end, and the contact-making surface contacted with fixed contact is provided with circular convex tactile face; Described moving contact side is provided with the recessed tactile face of moving contact, and/or is provided with the recessed tactile face of annular in fixed contact side.Be provided with recessed tactile face and convex tactile face, the contact area of plug-in strip plate and dynamic and static contact is considerably increased, allow this switch be more applicable on the circuit of low-voltage, high electric current.The recessed tactile face of above-mentioned moving contact side can be the shape such as oval, square, circular, plug-in strip plate is then the convex tactile face corresponded.
Above-mentioned moving contact and fixed contact are arranged on corresponding silicon rubber insulator pillar respectively; The rear end of described plug-in strip plate is contained on fixed contact by long-neck bolt, compression spring and nut clip, the front end of plug-in strip plate clamps draw ring, and fix by long-neck bolt and compression spring and be interconnected, the range line finger ring that draw ring and plug-in strip plate top end clamp forms the embedding embedding clip slot being sandwiched in moving contact.
Above-mentioned flash guard comprises and being arranged on silicon rubber insulator pillar and the preventing arc fixed contact of the high-quality red copper material be connected with terminal block and be arranged on the preventing arc moving contact of the high-quality red copper material on plug-in strip plate.Flash guard can not produce electric arc, handling safety when ensure that folding switch.
Above-mentioned plug-in strip plate is spill plug-in strip plate, and spill plug-in strip plate arranged relative is also installed on contact.
The side, rear end of above-mentioned plug-in strip plate is provided with limiting plate.
Above-mentioned compression spring is nested with on the long-neck bolt outside plug-in strip plate two ends one, and compression spring two ends are respectively arranged with the compression spring guard shield for being limited to by compression spring on bolt.
Above-mentioned base is " ︻ " shape mounting panel, on base, device has three silicon rubber insulator pillars, wherein two silicon rubber insulator pillars install moving contact, fixed contact respectively, terminal block installed by another silicon rubber insulator pillar, and terminal block is connected by fuse-link with fixed contact.
Above-mentioned fuse-link is wire or sheet metal.
Above-mentioned draw ring comprises latch nook, latch nook spring and hook piece, and latch nook and latch nook spring fitting, in hook piece, form self-locking drag hook.
The shape size in the recessed tactile face of above-mentioned moving contact is corresponding with convex tactile face, the front end of plug-in strip plate shape; The shape size in the recessed tactile face of described annular is corresponding with the circle convex tactile face shape of plug-in strip plate rear end.
In technical scheme of the present invention, be provided with in the side of moving contact, fixed contact and touch corresponding recessed tactile face, face with plug-in strip plate epirelief, increase the contact area between plug-in strip plate and upper static contact, isolating switch is followed and is applicable to the circuit of low pressure height stream, and it need not often be safeguarded, increase its useful life.This isolating switch is also provided with flash guard, mainly due to switch separating brake, close a floodgate time can produce electric arc, easily make moving contact and plug-in strip plate burn out, therefore on moving contact and plug-in strip plate, be fixed with preventing arc fixed contact and preventing arc moving contact respectively, when switch separating brake, be separated after preventing arc moving contact; When switch closes a floodgate, preventing arc moving contact first contacts, and plays the effect of arc extinguishing, makes moving contact and plug-in strip plate be not easy to burn out; And creationary draw ring and flash guard possessing self-locking structure comprehensively using, finishing this product in the past and only containing draw ring or the situation only containing flash guard.
Compared with prior art, the beneficial effect that has of the present invention:
1. knife switch and safeties (fuse-link) are arranged in series, discharge capacity is large, and it is convenient to change fuse-link, is convenient to safety operation.
2. the range line finger ring on plug-in strip plate top, be convenient to regulator knife plate and contact compression spring retaining mechanism closely with upper, fixed contact, and upper, fixed contact be provided with two ends on recessed tactile face and plug-in strip plate corresponding convex tactile face is set, all strict guarantee plug-in strip plate and close contacts that is upper, fixed contact, ensure that can the large electric current of break-make.
3. set up flash guard, can not electric arc be produced during folding switch, guarantee safety operation, extend product useful life.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of one embodiment of the invention;
Fig. 2 is the switch off state schematic diagram of one embodiment of the invention;
Fig. 3 is the vertical view of knife switch of the present invention;
Fig. 4 is plug-in strip plate medial side view of the present invention;
Fig. 5 is the schematic diagram of one embodiment of the invention when not installing plug-in strip plate;
Fig. 6 is the schematic diagram of another embodiment of the present invention when not installing plug-in strip plate.
Reference numeral: base 1, silicon rubber insulator pillar 2, moving contact 3, plug-in strip plate 4, preventing arc fixed contact 5, draw ring 6, preventing arc moving contact 7, limiting plate 8, fixed contact 9, fuse-link 10, terminal block 11, range line finger ring 12, compression spring 13, compression spring protective cover 14, the convex tactile face 15 of annular, convex tactile face 16, front end, the recessed tactile face 17 of moving contact, the recessed tactile face 18 of annular, long-neck bolt 19.
Embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described further.
Embodiment 1: as shown in drawings, low-pressure fusing disconnecting switch of the present invention comprises base 1, silicon rubber insulator pillar 2, the knife switch be arranged on silicon rubber insulator pillar 2, wire 10, terminal block 11 and flash guard.Base 1 is " ︻ " shape mounting panel, base 1 is provided with three silicon rubber insulator pillars 2, wherein two silicon rubber insulator pillars 2 install moving contact 3, fixed contact 9 respectively, terminal block 11 installed by another silicon rubber insulator pillar 2, and terminal block 11 is connected by wire 10 with fixed contact 9.Knife switch comprises moving contact 3, fixed contact 9, two shoe brake knife plate 4, draw ring 6 and compression spring 13; Moving contact 3 side is provided with two recessed tactile faces 17 of ellipse, and fixed contact 9 side is then provided with the recessed tactile face 18 of annular, and moving contact 3 and fixed contact 9 are arranged on corresponding silicon rubber insulator pillar 2 respectively; Plug-in strip plate 4 is spill plug-in strip plate 4, spill plug-in strip plate 4 arranged relative is also installed on contact, the contact-making surface of one end that plug-in strip plate 4 contacts with fixed contact 9 is circular convex tactile face 15, is the convex tactile face 16 of ellipse of two arranged in parallel with the contact-making surface of moving contact 3 end thereof contacts; The rear end of plug-in strip plate 4 is contained on fixed contact 9 by long-neck bolt 19, compression spring 13 with nut clip; Front end clamps draw ring 6, and is fixed by long-neck bolt 19 and compression spring 13 and be interconnected, and forms the embedding embedding clip slot being sandwiched in moving contact 3 with the range line finger ring 12 that plug-in strip plate 4 top end clamps.One piece of limiting plate 8 is installed outside the rear end one of plug-in strip plate 4.Compression spring 13 is nested with on the long-neck bolt 19 outside plug-in strip plate 4 two ends one, and compression spring 13 two ends are respectively arranged with the compression spring guard shield 14 for being limited to by compression spring 13 on bolt.Draw ring 6 comprises latch nook, latch nook spring and hook piece, and latch nook and latch nook spring fitting, in hook piece, form self-locking drag hook.Flash guard comprises and being arranged on silicon rubber insulator pillar 2 and the preventing arc fixed contact 5 be connected with terminal block 11 and the preventing arc moving contact 7 be arranged on plug-in strip plate 4, and anti-arcing contact adopts high-quality red copper material to make.
Embodiment 2: as shown in drawings, low-pressure fusing disconnecting switch of the present invention comprises base 1, silicon rubber insulator pillar 2, the knife switch be arranged on silicon rubber insulator pillar 2, sheet metal 10, terminal block 11 and flash guard.Base 1 is " ︻ " shape mounting panel, base 1 is provided with three silicon rubber insulator pillars 2, wherein two silicon rubber insulator pillars 2 install moving contact 3, fixed contact 9 respectively, terminal block 11 installed by another silicon rubber insulator pillar 2, and terminal block 11 is connected by sheet metal 10 with fixed contact 9.Knife switch comprises moving contact 3, fixed contact 9, two shoe brake knife plate 4, draw ring 6 and compression spring 13; Moving contact 3 side is provided with a square recessed tactile face 17, and fixed contact 9 side is then provided with the recessed tactile face 18 of annular, and moving contact 3 and fixed contact 9 are arranged on corresponding silicon rubber insulator pillar 2 respectively; Plug-in strip plate 4 is spill plug-in strip plate 4, and spill plug-in strip plate 4 arranged relative is also installed on contact, and the contact-making surface of one end that plug-in strip plate 4 contacts with fixed contact 9 is circular convex tactile face 15, is a square convex tactile face 16 with the contact-making surface of moving contact 3 end thereof contacts; The rear end of plug-in strip plate 4 is contained on fixed contact 9 by long-neck bolt 19, compression spring 13 with nut clip; Front end clamps draw ring 6, and is fixed by long-neck bolt 19 and compression spring 13 and be interconnected, and forms the embedding embedding clip slot being sandwiched in moving contact 3 with the range line finger ring 12 that plug-in strip plate 4 top end clamps.One piece of limiting plate 8 is installed outside the rear end one of plug-in strip plate 4.Compression spring 13 is nested with on the long-neck bolt 19 outside plug-in strip plate 4 two ends one, and compression spring 13 two ends are respectively arranged with the compression spring guard shield 14 for being limited to by compression spring 13 on bolt.Draw ring 6 comprises latch nook, latch nook spring and hook piece, and latch nook and latch nook spring fitting, in hook piece, form self-locking drag hook.Flash guard comprises and being arranged on silicon rubber insulator pillar 2 and the preventing arc fixed contact 5 be connected with terminal block 11 and the preventing arc moving contact 7 be arranged on plug-in strip plate 4, and anti-arcing contact adopts high-quality red copper material to make.
Claims (1)
1. a low-pressure fusing disconnecting switch, the knife switch comprising base (1), fuse-link (10), terminal block (11), flash guard, silicon rubber insulator pillar (2) and be arranged on silicon rubber insulator pillar (2), knife switch comprises moving contact (3), fixed contact (9), two shoe brake knife plates (4), draw ring (6) and compression spring (13); The contact-making surface that plug-in strip plate (4) contacts with moving contact (3) is provided with the convex tactile face (16) in front end, the contact-making surface that plug-in strip plate (4) contacts with fixed contact (9) is provided with circular convex tactile face (15), it is characterized in that: described moving contact (3) side is provided with the recessed tactile face (17) of moving contact, and/or be provided with the recessed tactile face (18) of annular in fixed contact (9) side; The upper end side of described moving contact (3) is provided with self-locking breach; Described draw ring (6) comprises latch nook, latch nook spring and hook piece, and latch nook and latch nook spring fitting, in hook piece, form self-locking drag hook;
Described moving contact (3) and fixed contact (9) are arranged on corresponding silicon rubber insulator pillar (2) respectively; The rear end of described plug-in strip plate (4) is contained on fixed contact (9) by long-neck bolt (19), compression spring (13) with nut clip, the front end of plug-in strip plate (4) clamps draw ring (6), and fix by long-neck bolt (19) and compression spring (13) and be interconnected, the range line finger ring (12) that draw ring (6) and plug-in strip plate (4) top end clamp forms the embedding embedding clip slot being sandwiched in moving contact (3);
Described flash guard comprises the preventing arc moving contact (7) being arranged on the upper and preventing arc fixed contact (5) of the red copper material be connected with terminal block (11) of silicon rubber insulator pillar (2) and being arranged on the red copper material on plug-in strip plate (4);
Described plug-in strip plate (4) is spill plug-in strip plate (4), and spill plug-in strip plate (4) arranged relative is also installed on contact;
The side, rear end of described plug-in strip plate (4) is provided with limiting plate (8);
Described compression spring (13) is nested with on the long-neck bolt (19) outside plug-in strip plate (4) two ends one, and compression spring (13) two ends are respectively arranged with the compression spring guard shield (14) for being limited to by compression spring (13) on bolt;
The upper device of described base (1) has three silicon rubber insulator pillars (2), wherein two silicon rubber insulator pillars (2) install moving contact (3), fixed contact (9) respectively, terminal block (11) installed by another silicon rubber insulator pillar (2), and terminal block (11) is connected by fuse-link (10) with fixed contact (9);
Described fuse-link (10) is wire or sheet metal;
The shape size of the recessed tactile face of described moving contact (17) is corresponding with the front end of plug-in strip plate (4) convex tactile face (16) shape; The shape size of the recessed tactile face of described annular (18) is corresponding with the circle of plug-in strip plate (4) rear end convex tactile face (15) shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210007742.8A CN102436955B (en) | 2012-01-12 | 2012-01-12 | Low-pressure fusing disconnecting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210007742.8A CN102436955B (en) | 2012-01-12 | 2012-01-12 | Low-pressure fusing disconnecting switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102436955A CN102436955A (en) | 2012-05-02 |
| CN102436955B true CN102436955B (en) | 2015-05-20 |
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ID=45984956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210007742.8A Expired - Fee Related CN102436955B (en) | 2012-01-12 | 2012-01-12 | Low-pressure fusing disconnecting switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102436955B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103681018B (en) * | 2013-12-13 | 2016-01-20 | 中国西电电气股份有限公司 | A kind of buffer unit preventing high voltage ground switch induction discharge |
| CN103681079A (en) * | 2013-12-22 | 2014-03-26 | 广西和谐电力科技有限公司 | High-voltage isolating switch |
| CN104916488A (en) * | 2014-03-13 | 2015-09-16 | 上海正昊电力科技有限公司 | Disconnecting switch |
| CN105070579A (en) * | 2015-08-06 | 2015-11-18 | 大唐岩滩水力发电有限责任公司 | Outdoor high-voltage isolated switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201126785Y (en) * | 2007-12-17 | 2008-10-01 | 李亚臣 | Outdoor low pressure fusing switch |
| CN201503795U (en) * | 2009-09-02 | 2010-06-09 | 平顶山爱迪生电力系统有限公司 | One-way isolating switch |
| CN201503798U (en) * | 2009-09-15 | 2010-06-09 | 河南森源电气股份有限公司 | Contact knife of isolating switch |
| CN201725761U (en) * | 2010-03-23 | 2011-01-26 | 张雷 | Outdoor type fuse |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2281577C1 (en) * | 2005-04-19 | 2006-08-10 | Государственное образовательное учреждение высшего профессионального образования "Иркутский государственный технический университет" (ГОУ ИрГТУ) | Knife-switch |
| CN202487475U (en) * | 2012-01-12 | 2012-10-10 | 广西和谐电力科技有限公司 | Low-voltage fusing type disconnecting switch |
-
2012
- 2012-01-12 CN CN201210007742.8A patent/CN102436955B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201126785Y (en) * | 2007-12-17 | 2008-10-01 | 李亚臣 | Outdoor low pressure fusing switch |
| CN201503795U (en) * | 2009-09-02 | 2010-06-09 | 平顶山爱迪生电力系统有限公司 | One-way isolating switch |
| CN201503798U (en) * | 2009-09-15 | 2010-06-09 | 河南森源电气股份有限公司 | Contact knife of isolating switch |
| CN201725761U (en) * | 2010-03-23 | 2011-01-26 | 张雷 | Outdoor type fuse |
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| Publication number | Publication date |
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| CN102436955A (en) | 2012-05-02 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20200112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |