CN104392862A - Auxiliary ground switch component of fuse - Google Patents
Auxiliary ground switch component of fuse Download PDFInfo
- Publication number
- CN104392862A CN104392862A CN201410678094.8A CN201410678094A CN104392862A CN 104392862 A CN104392862 A CN 104392862A CN 201410678094 A CN201410678094 A CN 201410678094A CN 104392862 A CN104392862 A CN 104392862A
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- China
- Prior art keywords
- connecting rod
- ground connection
- insulated
- fuse
- ground
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- 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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Classifications
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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
- H01H31/12—Adaptation for built-in fuse
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- Arc-Extinguishing Devices That Are Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention relates to an auxiliary ground switch component. The auxiliary ground switch component of fuse comprises a ground switch electrically connected with the fuse, and an insulated base body which is used for fixedly sealing the ground switch; the external surface of the insulated base body is coated with a ground layer; the front end of the insulated base body is provided with a connection portion containing chamber; the ground switch comprises a long conductive rod, a ground connecting rod, an elastic insulated plunger, a ground end cap and insulated connecting rod, wherein the long conductive rod is electrically connected with a wire outlet end of the fuse and the front end of the long conductive rod is connected with the rear end of the connection portion containing chamber, the ground connecting rod is inserted in the connection portion containing chamber and is movably inserted in the long conductive rod, the elastic insulated plunger is sleeved on the ground connecting rod, the ground end cap is located at the external port of the connection portion containing chamber, and the insulated connecting rod is movably inserted in the ground end cap and the elastic insulated plunger, and the insulated connecting rod is fixedly connected with the ground connecting rod. The purpose of the invention is to provide an auxiliary ground switch component which is simple in structure and credible in work, so as to ensure that the wire outlet terminal of the fuse is grounded during examining and repairing the switch equipment, thereby guaranteeing the safety of examining and repairing.
Description
Technical field
The present invention relates to a kind of fuse auxiliary earth switch module.
Background technology
Switch cubicle miniaturization is in recent years the study hotspot in industry.Current domestic 10kV switch cubicle majority adopts stuck-module to be formed by connecting by bus, and its air distance realizes in strict accordance with 125mm, and therefore cupboard volume is comparatively large, and environment for use is also restricted; And miniaturized switch cubicle majority adopts gas-filling cabinet scheme to meet to reduce alternate and relatively insulation distance.Because filled SF6 gas belongs to greenhouse gas, do not belong to popularization series products.In order to make up the shortcomings such as greenhouse effect, the easily gas leakage of SF6 gas-filling cabinet, and the shortcoming that air insulation switch cubicle floor space is large.Instantly, be necessary to develop a kind of new switching equipment, can small form factor requirements be met, not use greenhouse gas again, meet the requirement of environmental protection.Therefore, become can one of the R&D direction meeting the demand for solid insulation technology.In the R&D process of carrying out solid insulation technology, when carrying out Combination application to on-load switch and fuse, earthed switch is needed to provide auxiliary earth for fuse.The reliability design of earthed switch is to provide the important technology research and development point of fuse safety inspection environment.
Summary of the invention
The object of the present invention is to provide a kind of fuse auxiliary earth switch module of simple for structure, reliable operation, during to guarantee that switchgear overhauls, fuse leading-out terminal ground connection, ensures safety inspection.
Object of the present invention is achieved through the following technical solutions:
A kind of fuse auxiliary earth switch module, it comprises the earthed switch be electrically connected with fuse and insulating body earthed switch being carried out to sealing, and the outer surface of insulating body is coated with ground plane; Described insulating body front end offers connecting portion cavity volume; Described earthed switch comprise to be electrically connected with the leading-out terminal of fuse and front end be connected with connecting portion cavity volume rear end long conducting rod, be arranged in connecting portion cavity volume and activity be connected to the ground connection connecting rod in long conducting rod, the elastic insulated plunger be sheathed on outside ground connection connecting rod, be positioned at connecting portion cavity volume external port ground connection end cap and be actively located in the insulated connecting rod that ground connection end cap is fixedly connected with elastic insulated plunger and with ground connection connecting rod; During ground connection, ground connection end cap and long conducting rod are formed by the ground connection connecting rod pulled by insulated connecting rod and are electrically connected.
Compared to prior art, the invention has the advantages that:
1. by insulating material such as epoxy resin by fuse cavity volume and the disposable injection-compression molding of earthed switch cavity volume, and at the outer surface ground plane of insulating body that insulating material is formed, reach uniform electric field shielding and the effect of reliable ground, increase the person and equipment property safe and reliable to operation, and its appearance can directly touch, and make two-phase fuse insulating matrix can be close together and not reduce phase insulation, phase spacing narrows down to the limit, make alternate and over the ground the safe insulation distance of inside switch cabinet greatly shorten, effectively reduce the volume of switch cubicle;
2., when the isolation switch contact ground connection in switch cubicle or fuse blows, earthed switch assembly realizes reliable auxiliary earth under the interlock of actuating structure drives, and forms visible fracture, ensures safety;
3. this fuse auxiliary earth switch module can use in the place of bad environments, and has really accomplished that switch cabinet is non-maintaining;
4. the interface size highly versatile of the taper butt joint of earthed switch, can utilize existing general plug connector to be electrically connected easily, and guarantee that it is reliably connected with other electric component;
5. modular design can the most reasonably reduce number of molds, improves product versatility, is conveniently connected.
Accompanying drawing explanation
Fig. 1 is the using state perspective view of an embodiment of the present invention.
Fig. 2 is the diagrammatic side views of Fig. 1 embodiment.
Fig. 3 is the diagrammatic cross-sectional view of a kind of operating state of earthed switch assembly.
Fig. 4 is the diagrammatic cross-sectional view of the another kind of operating state of earthed switch assembly.
Label declaration: 1 main switch assembly, 2 fuse assemblies, 21 insulating bodies, 211 fuse cavity volumes, 212 butt joint plant chambeies, 213 threaded connector containing cavities, 214 elastic insulated plugs, 215 plug fixtures, 216 connecting portion cavity volumes, 217 taper butt joints, 22 ground planes, 23 fuse units, 231 inlet wire conductive shield seats, 2311 shielding convex edges, 232 inlet wire conductive contacts, 233 fuses, 234 outlet conductive shield seats, 2341 shielding convex edges, 2342 shielding convex edges, 235 outlet conductive contacts, 236 strikers, 237 watchband-shaped contactors, 238 butt joint conduction holders, 24 earthed switches, 241 long conducting rods, 2411 charged display shading rings, 242 ground connection connecting rods, 243 elastic insulated plungers, 244 ground connection end caps, 2441 fixing inserts, 2442 conduction terminations, 2443 elastic conduction contacts, 245 insulated connecting rods, 3 busbar assemblies, 4 switch cabinets, 5 operating mechanisms.
Embodiment
Below in conjunction with Figure of description and embodiment, content of the present invention is described in detail:
Be the embodiment schematic diagram of a kind of fuse auxiliary earth switch module provided by the invention as shown in Figures 1 to 4.
A kind of fuse auxiliary earth switch module, it is characterized in that: it comprises the earthed switch 24 be electrically connected with fuse 23 and the insulating body 21 earthed switch 24 being carried out to sealing, the outer surface of insulating body 21 is coated with ground plane 22, described insulating body 21 front end offers connecting portion cavity volume 216, described earthed switch 24 comprises and to be electrically connected with the leading-out terminal of fuse 23 and the long conducting rod 241 that is connected with connecting portion cavity volume 216 rear end of front end, to be arranged in connecting portion cavity volume 216 and activity is connected to the ground connection connecting rod 242 in long conducting rod 241, be sheathed on the elastic insulated plunger 243 outside ground connection connecting rod 242, be positioned at the ground connection end cap 244 of connecting portion cavity volume 216 external port and be actively located in the insulated connecting rod 245 that ground connection end cap 244 is fixedly connected with elastic insulated plunger 243 and with ground connection connecting rod 242, during ground connection, ground connection end cap 244 and long conducting rod 241 are formed by the ground connection connecting rod 242 pulled by insulated connecting rod 245 and are electrically connected.Earthed switch 24 under the drive of operating mechanism 5 with the synchronous ground connection of main switch assembly 1.During ground connection, insulated connecting rod 245 is drawn out and forms visible fracture.
The outer surface of insulating body 21 adopts metallizing particle coating to be reliably connected with earth potential, high-pressure conductor forms the electrode structure of all pressing by appropriate design, form high-low pressure two current potentials with external ground layer 22, centre forms reliable and stable High-Voltage Insulation by certain thickness solid insulation matrix.Therefore, solid insulation design makes the original air type structure of overall structure volume ratio reduce 2/3, and insulation property do not change because of the impact of height above sea level and other outside environmental elements simultaneously.
Described ground connection end cap 244 comprise the fixing inserts 2441 be embedded on the wall of connecting portion cavity volume 216 front end, with fixing inserts 2441 be threaded coordinate and with insulated connecting rod 245 perforating conduction termination 2442 and to be located in insulated connecting rod 245 perforating and the elastic conduction contact 2443 be electrically connected with conduction termination 2442; When ground connection connecting rod 242 is drawn out, ground connection connecting rod 242 is electrically connected with conduction termination 2442 by the elastic conduction contact 2443 leaned on ground connection connecting rod 242.
In order to squeeze out the air in connecting portion cavity volume 216, compression elasticity insulation plunger 243 is pushed up in described conduction termination 2442; When insulated connecting rod 245 inserts elastic insulated plunger 243, insulated connecting rod 245 and elastic insulated plunger 243 are interference fit.Elastic insulated plunger 243 outer surface is with certain tapering, when insulated connecting rod 245 inserts elastic insulated plunger 243, the part that insulated tension pole 245 contacts with elastic insulated plunger 243 with certain taper, thus realizes the interference fit between insulated connecting rod 245 and elastic insulated plunger 243.
Described insulating body 21, its termination being positioned at long conducting rod 241 rear end is the taper butt joint 217 of the outer bevel-type Structure composing of employing standard, the uncoated ground plane 22 of outer surface of taper butt joint 217.The bottom of described taper butt joint 217 is provided with convex annular along 218.Because taper butt joint 217 adopts the outer bevel-type structure of standard, therefore it can be expanded as cable joint carries out being connected with other electric component very easily on demand.Convex annular is located at the bottom of taper butt joint 217 and near ground plane 22 place, it plays the effect of even ground plane 22 and the electric field of the intersection of uncoated ground plane 22 along 218.
Described taper butt joint 217 is provided with around long conducting rod 241 with the junction of insulating body 21 main body and is embedded at the charged display shading ring 2411 in insulating body 21.Utilize charged display shading ring 2411 to respond to and obtain capacitance signal to realize detecting the function of charged situation.
As shown in Figure 3, for ensureing that fuse 233 is changed convenient and reliable, fuse unit 23 is arranged in the fuse cavity volume 211 of insulating body 21, outlet conductive shield seat 234 and long conducting rod 241 are one-body molded in casting process, and the electrical connection between fuse unit 23 and earthed switch 24 and failure rate can be reduced greatly.The action of earthed switch 24 and the ground connection station of main switch assembly 1 link, and its two ends ground connection simultaneously when guaranteeing that fuse 233 is changed, also can meet switchgear simultaneously and close the requirement possessing visible fracture when dividing operation, security reliability strengthens.
Claims (6)
1. a fuse auxiliary earth switch module, it is characterized in that: it comprises the earthed switch (24) be electrically connected with fuse (23) and the insulating body (21) earthed switch (24) being carried out to sealing, the outer surface of insulating body (21) is coated with ground plane (22), described insulating body (21) front end offers connecting portion cavity volume (216), described earthed switch (24) comprises and to be electrically connected with the leading-out terminal of fuse (23) and the long conducting rod (241) that is connected with connecting portion cavity volume (216) rear end of front end, to be arranged in connecting portion cavity volume (216) and activity is connected to the ground connection connecting rod (242) in long conducting rod (241), be sheathed on ground connection connecting rod (242) elastic insulated plunger (243) outward, be positioned at the ground connection end cap (244) of connecting portion cavity volume (216) external port and be actively located in the insulated connecting rod (245) that ground connection end cap (244) is fixedly connected with elastic insulated plunger (243) and with ground connection connecting rod (242), during ground connection, ground connection end cap (244) and long conducting rod (241) are formed by the ground connection connecting rod (242) pulled by insulated connecting rod (245) and are electrically connected.
2. fuse auxiliary earth switch module according to claim 1, is characterized in that: described ground connection end cap (244) comprise the fixing inserts (2441) be embedded on the wall of connecting portion cavity volume (216) front end, with fixing inserts (2441) be threaded coordinate and with insulated connecting rod (245) perforating conduction termination (2442) and be located at the elastic conduction contact (2443) be electrically connected in insulated connecting rod (245) perforating and with conduction termination (2442); When ground connection connecting rod (242) is drawn out, ground connection connecting rod (242) is electrically connected with conduction termination (2442) by the elastic conduction contact (2443) leaned on ground connection connecting rod (242).
3. fuse auxiliary earth switch module according to claim 2, is characterized in that: described conduction termination (2442) top compression elasticity insulation plunger (243); When insulated connecting rod (245) inserts elastic insulated plunger (243), insulated connecting rod (245) and elastic insulated plunger (243) are interference fit.
4. the fuse auxiliary earth switch module according to claim 1-3 any one, it is characterized in that: described insulating body (21), its termination being positioned at long conducting rod (241) rear end is the taper butt joint (217) of the outer bevel-type Structure composing of employing standard, the uncoated ground plane of outer surface (22) of taper butt joint (217).
5. fuse auxiliary earth switch module according to claim 4, is characterized in that: the bottom of described taper butt joint (217) is provided with convex annular along (218).
6. fuse auxiliary earth switch module according to claim 4, is characterized in that: described taper butt joint (217) is provided with around long conducting rod (241) with the junction of insulating body (21) main body and is embedded at the charged display shading ring (2411) in insulating body (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410678094.8A CN104392862B (en) | 2014-11-21 | 2014-11-21 | Fuse auxiliary earth switch module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410678094.8A CN104392862B (en) | 2014-11-21 | 2014-11-21 | Fuse auxiliary earth switch module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104392862A true CN104392862A (en) | 2015-03-04 |
| CN104392862B CN104392862B (en) | 2017-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410678094.8A Active CN104392862B (en) | 2014-11-21 | 2014-11-21 | Fuse auxiliary earth switch module |
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| Country | Link |
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| CN (1) | CN104392862B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002025418A (en) * | 2000-07-13 | 2002-01-25 | Energy Support Corp | Cutout assembly structure to gas-filling equipment |
| JP2005197182A (en) * | 2004-01-09 | 2005-07-21 | Mitsubishi Electric Corp | Insulating support structure of fuse |
| CN201601100U (en) * | 2009-12-03 | 2010-10-06 | 北京双杰电气股份有限公司 | Fuse cutout for solid insulating full-closed combined electrical appliance |
| CN202712732U (en) * | 2012-05-24 | 2013-01-30 | 北京科锐配电自动化股份有限公司 | Total-solid insulation ring-network cabinet equipped with fuse tube |
| CN203055841U (en) * | 2012-12-31 | 2013-07-10 | 西渥电气（福州）有限公司 | A solid-insulated totally-enclosed fuse cylinder |
| CN203895397U (en) * | 2014-03-26 | 2014-10-22 | 协励行(厦门)电气有限公司 | Solid insulation fuse |
| CN204230136U (en) * | 2014-11-21 | 2015-03-25 | 国家电网公司 | Fuse auxiliary earth switch module |
-
2014
- 2014-11-21 CN CN201410678094.8A patent/CN104392862B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002025418A (en) * | 2000-07-13 | 2002-01-25 | Energy Support Corp | Cutout assembly structure to gas-filling equipment |
| JP2005197182A (en) * | 2004-01-09 | 2005-07-21 | Mitsubishi Electric Corp | Insulating support structure of fuse |
| CN201601100U (en) * | 2009-12-03 | 2010-10-06 | 北京双杰电气股份有限公司 | Fuse cutout for solid insulating full-closed combined electrical appliance |
| CN202712732U (en) * | 2012-05-24 | 2013-01-30 | 北京科锐配电自动化股份有限公司 | Total-solid insulation ring-network cabinet equipped with fuse tube |
| CN203055841U (en) * | 2012-12-31 | 2013-07-10 | 西渥电气（福州）有限公司 | A solid-insulated totally-enclosed fuse cylinder |
| CN203895397U (en) * | 2014-03-26 | 2014-10-22 | 协励行(厦门)电气有限公司 | Solid insulation fuse |
| CN204230136U (en) * | 2014-11-21 | 2015-03-25 | 国家电网公司 | Fuse auxiliary earth switch module |
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| Publication number | Publication date |
|---|---|
| CN104392862B (en) | 2017-08-11 |
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