CN204088246U - Fuse supporting component on high voltage switchgear and high voltage switchgear - Google Patents

Fuse supporting component on high voltage switchgear and high voltage switchgear Download PDF

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Publication number
CN204088246U
CN204088246U CN201420333716.9U CN201420333716U CN204088246U CN 204088246 U CN204088246 U CN 204088246U CN 201420333716 U CN201420333716 U CN 201420333716U CN 204088246 U CN204088246 U CN 204088246U
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China
Prior art keywords
fuse
supporting component
clamping
clamp assemblies
grading shield
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Active
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CN201420333716.9U
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Chinese (zh)
Inventor
李海兴
格秀山
马一鸣
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ABB Technology AG
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ABB T&D Technology AG
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Abstract

The utility model provides fuse supporting component on a kind of high voltage switchgear and high voltage switchgear, comprise fuse upper end grading shield (1), fuse upper end clamp assemblies (2), fuse lower end grading shield (3), fuse lower end clamp assemblies (4) and fuse lower end base (5), fuse (6).Wherein, fuse upper end grading shield (1) is connected by bolt and fuse upper end holder (2), fuse upper end holder (2) and fuse lower end holder (4) clamp the upper and lower two ends of fuse and possess the ability of On current, fuse lower end holder (4) is connected by bolt and fuse lower end base (5), and fuse lower end grading shield (3) is connected by interference fit with fuse lower end base (5); Fuse upper end grading shield (1), fuse lower end grading shield (3) and fuse lower end base (5) use insulating material to make, surperficial additional metal coating or coated semiconductor.

Description

Fuse supporting component on high voltage switchgear and high voltage switchgear
Technical field
The utility model belongs to power product technical field, be specifically related to a kind of fuse supporting component being applied to high-voltage alternating switch-fuse combination on high voltage switchgear, to realize the effect that fuse upper and lower port conducts electricity, clamps fuse and improve electric field.
Background technology
In high voltage switchgear when relating to high-voltage alternating switch-fuse combination, need be fixed fuse, ensureing, between other functional units that fuse upper and lower port is coupled, there is good conductivity; Because the fixed support element shapes of fuse is irregular, easily alternate or discharge to other and earth point iso-electric position and cause test failure in the Insulation Test that national standard requires, therefore need the electric field line distribution at optimization supporting component place; In addition, national standard, to the high voltage switchgear of 12kV, 24kV electric pressure, requires the minimum air clearance of live part and ground connection, need be greater than 125mm and 180mm respectively.
The fuse supporting component of existing high-tension switch cabinet is main in the following ways:
One, in the high-tension switch cabinet product of 12kV grade, existing fuse supporting component comprises upper and lower fuse clamping part, up and down grading shield and lower end base for supporting usually, and its grading shield and base for supporting are generally aluminium alloy and make.When ensureing that air clearance meets national standard, because national standard requires lower to the switch cubicle insulation test voltage of 12kV grade, even without grading shield, also electric discharge can seldom be there is and cause test not by, therefore upper and lower grading shield not necessarily functional unit and add cost in fuse clamping place.
Two, in the high-tension switch cabinet product of 24kV grade, existing fuse supporting component comprises upper and lower fuse clamping part, up and down grading shield and lower end base for supporting usually, also comprise alternate insulation board, its grading shield and base for supporting are generally aluminium alloy and make and outer surface adds epoxy spraying, and insulation board and epoxy spraying are all used to increase alternate insulating capacity.The shortcoming of such design is that the processing technology of grading shield and base for supporting requires higher, and cost is higher, and insulation board also makes switch cubicle assembling time space diminish.
The utility model improves for the shortcoming of existing scheme, provides the supporting component of the fuse on a kind of high voltage switchgear, for high-voltage alternating switch-fuse combination, while practical function, reduces production cost.
Utility model content
An aspect of the present utility model, fuse on a kind of high voltage switchgear supporting component is provided, according to the first most preferred embodiment of the present utility model, fuse supporting component comprises fuse upper end clamp assemblies, fuse, fuse lower end clamp assemblies and fuse lower end base; Wherein fuse upper end clamp assemblies and fuse lower end clamp assemblies are electric conductor, and clamp the upper and lower two ends of fuse respectively; Fuse lower end clamp assemblies is fixedly connected with fuse lower end base.Due in 12kV electric pressure, voltage is lower, does not need to use grading shield to improve Electric Field Distribution, can reduce product cost.
According to another most preferred embodiment of the present utility model, it is applied in 24kV electric pressure, and the fuse supporting component of utility model also comprises fuse upper end grading shield and fuse lower end grading shield; Wherein fuse upper end grading shield is fixedly connected with fuse upper end clamp assemblies, and fuse lower end grading shield is connected by interference fit with fuse lower end base.
According to most preferred embodiment of the present utility model, fuse upper end clamp assemblies comprises upper end clamping part, spring collar, conducting copper and upper end support, and described conducting copper is fixedly connected with upper end support.
Described upper end clamping part has two and half arcuate structures; Spring collar provides radial tensile force, to clamp fuse upper end; The upper end of conducting copper is connected with high-voltage alternating on-load switch end opening, and conducting copper is connected with clamping part with the lower end of upper end support, the common conductive channel formed between fuse and high-voltage alternating on-load switch end opening.Described clamping part is copper material structure, and silver-plated at clip position.
Described fuse lower end clamp assemblies comprises lower end clamping part, ring spring and lower end support; Lower end clamping part has six pawl structures, and ring spring is enclosed within the clamping part of described lower end, provides radial tensile force to clamp fuse lower end; The lower end of lower end clamping part is fixedly connected with lower end support.Described lower end clamping part is copper material structure, and silver-plated at clip position.
According to another most preferred embodiment of the present utility model, the matrix of fuse upper end grading shield, fuse lower end grading shield and fuse lower end base all adopts insulating material to make.Described intrinsic silicon and/or external spray metal or coated semiconductor.
According to another most preferred embodiment of the present utility model, base both sides, fuse lower end are planar structure.
Another aspect of the present utility model, provides a kind of high voltage switchgear, and it comprises as the fuse supporting component above as described in any one; Described fuse supporting component upper end is connected with the end opening electricity of on-load switch, and is connected with the operating mechanism machinery of on-load switch by tripping operation linkage, and the lower end of fuse supporting component is connected with line cable.
When load end breaks down, the single-phase or heterogeneous fuse failure of fuse of described fuse supporting component, trigger the action of tripping operation linkage, on-load switch becomes open position from closing position, and circuit three-phase all disconnects.
Fuse supporting component on high voltage switchgear of the present utility model, can effectively increase minimum air clearance, makes phase insulation performance better.The grading shield that surface has metal or coated semiconductor plays the effect improving internal field's distribution; And reduce product cost.
Accompanying drawing explanation
Figure 1A is the structural representation of the utility model when being applied in 12kV grade high voltage switchgear;
Figure 1B is the structural representation of the utility model when being applied in 24kV grade high voltage switchgear;
Fig. 2 is fuse upper end of the present utility model clamp assemblies structural representation;
Fig. 3 is fuse lower end of the present utility model clamp assemblies structural representation;
Fig. 4 A-4B is lower end of the present utility model grading shield schematic diagram; Wherein, Fig. 4 B is the enlarged drawing of 3B part in Fig. 4 A;
Fig. 5 is fuse lower end of the present utility model base schematic top plan view;
Fig. 6 is application 24kV high-tension switch cabinet schematic diagram of the present utility model.
Embodiment
Below with reference to accompanying drawing, give the specific descriptions of Alternate embodiments of the present utility model.
Be the first most preferred embodiment of fuse supporting component of the present utility model as shown in Figure 1A, structural blast figure when it is applied in the high voltage switchgear of 12kV grade, comprise fuse upper end clamp assemblies 2, fuse 6, fuse lower end clamp assemblies 4 and fuse lower end base 5; Wherein fuse upper end clamp assemblies 2 and fuse lower end clamp assemblies 4 clamp fuse about 6 two ends and possess the ability of On current, and fuse lower end clamp assemblies 4 is connected by bolt and fuse lower end base 5.Because test voltage is lower in 12kV Insulation Test, do not need to use grading shield to improve Electric Field Distribution, can product cost be reduced.
Be the another most preferred embodiment of fuse supporting component of the present utility model as shown in Figure 1B, structural blast figure when it is applied in the high voltage switchgear of 24kV grade, comprise fuse upper end grading shield 1, fuse upper end clamp assemblies 2, fuse 6, fuse lower end clamp assemblies 4, fuse lower end grading shield 3 and fuse lower end base 5; Wherein fuse upper end grading shield 1 is connected by bolt and fuse upper end clamp assemblies 2, fuse upper end clamp assemblies 2 and fuse lower end clamp assemblies 4 clamp fuse about 6 two ends and possess the ability of On current, fuse lower end clamp assemblies 4 is connected by bolt and fuse lower end base 5, and fuse lower end grading shield 3 is connected by interference fit with fuse lower end base 5.
Below in conjunction with each accompanying drawing, describe structure and the function of the utility model fuse supporting component in detail.Be illustrated in figure 2 fuse upper end clamp assemblies 2 structural blast figure of the present utility model, fuse upper end clamp assemblies 2 comprises upper end clamping part 29, spring collar 28, conducting copper 26 and upper end support 27.The clamping part 29 with two and half arcuate structures is made of copper, and the clip position of half arcuate structure has local silver-plating, clamps fuse 6 upper end under the effect of the radial tensile force provided at spring collar 28; Conducting copper 26 and upper end support 27 are bolted, conducting copper 26 upper end is connected with high-voltage alternating on-load switch end opening, lower end and the clamping part 29 of conducting copper 26 and upper end support 27 are bolted, the common conductive channel formed between fuse 6 and high-voltage alternating on-load switch end opening.
Be illustrated in figure 3 fuse lower end clamp assemblies 4 structural blast figure of the present utility model, the lower end clamping part 41 with six pawl structures is made of copper, the clip position of hexa-claw shape structure has local silver-plating, ring spring 43 is enclosed within hexa-claw shape structural outer, provides radial tensile force to clamp fuse 6 lower end; Lower end clamping part 41 lower end and lower end support 42 are bolted, and lower end support 42 are reserved with the hole for stube cable head.
Fig. 4 A-4B is lower end of the present utility model grading shield schematic diagram; Wherein, Fig. 4 B is the enlarged drawing of 3B part in Fig. 4 A, and fuse lower end of the present utility model grading shield 3 matrix 34 adopts insulating material to make, and at matrix 34, inner or external spray metal or coated semiconductor 33, realize the function improving internal field's distribution.Equally, the matrix of upper end grading shield 1 and fuse lower end base 5 also all adopts insulating material to make, and cost is lower and increase the insulation property of fuse supporting component; At intrinsic silicon or external spray metal and/or coated semiconductor, realize the function improving internal field's distribution, no longer illustrate at this.
As the vertical view that Fig. 5 is fuse lower end of the present utility model base 5, the both sides 55 of lower end base 5 are plane, decrease lateral dimension compared with the arc surface of existing product, alternate minimum air clearance can be increased when space is comparatively compact in switch cubicle, meet the requirement of national standard.
As shown in Figure 6, for the switch cubicle of 24kV with high-voltage alternating switch-fuse combination, operation principle of the present utility model is described.Fuse supporting component 100 upper end of the present utility model is connected with the end opening electricity of on-load switch 63, and is connected with the operating mechanism machinery of on-load switch 63 by tripping operation linkage 62, and fuse supporting component 100 lower end is connected with line cable.When load end breaks down, the single-phase or heterogeneous fuse failure of fuse, trigger the action of tripping operation linkage, on-load switch 63 becomes open position from closing position, and circuit three-phase all disconnects, and plays the effect of protection load.
In sum, the utility model can realize gripping for fuse, and upper end is connected with high-voltage alternating on-load switch, and the interface with cable is reserved in lower end, has good conductivity; Upper and lower grading shield and lower end base adopt insulating material to make, and can effectively increase minimum air clearance, and surface has metal or coated semiconductor plays the effect improving internal field's distribution; Fuse lower end base adopts both lateral sides to be the particular design of plane, increases alternate minimum air clearance, makes phase insulation performance better.Grading shield can not be used when using in 12kV switchgear to reduce product cost.
Although disclose preferred embodiment of the present utility model and accompanying drawing for the purpose of illustration, person skilled in the art, in the spirit and scope not departing from the utility model and appended claim, various replacement, change and retouching can be done.Therefore, the utility model should not be limited to the content disclosed in preferred embodiment and accompanying drawing, and the scope that protection range of the present utility model defines with appending claims is as the criterion.

Claims (12)

1. the fuse supporting component on high voltage switchgear, is characterized in that: comprise fuse upper end clamp assemblies (2), fuse (6), fuse lower end clamp assemblies (4) and fuse lower end base (5); Wherein fuse upper end clamp assemblies (2) and fuse lower end clamp assemblies (4) are electric conductor, and clamp fuse (6) two ends up and down respectively; Fuse lower end clamp assemblies (4) is fixedly connected with fuse lower end base (5).
2. fuse supporting component as claimed in claim 1, is characterized in that: also comprise fuse upper end grading shield (1) and fuse lower end grading shield (3); Wherein fuse upper end grading shield (1) is fixedly connected with fuse upper end clamp assemblies (2), and fuse lower end grading shield (3) is connected by interference fit with fuse lower end base (5).
3. fuse supporting component as claimed in claim 1 or 2, it is characterized in that: fuse upper end clamp assemblies (2) comprises upper end clamping part (29), spring collar (28), conducting copper (26) and upper end support (27), and described conducting copper (26) is fixedly connected with upper end support (27).
4. fuse supporting component as claimed in claim 3, is characterized in that: described upper end clamping part (29) has two and half arcuate structures; Spring collar (28) provides radial tensile force, to clamp fuse (6) upper end; The upper end of conducting copper (26) is connected with high-voltage alternating on-load switch end opening, conducting copper (26) is connected with clamping part (29) with the lower end of upper end support (27), jointly forms the conductive channel between fuse (6) and high-voltage alternating on-load switch end opening.
5. fuse supporting component as claimed in claim 4, is characterized in that: described clamping part (29) is copper material structure, and silver-plated at clip position.
6. fuse supporting component as claimed in claim 1 or 2, is characterized in that: described fuse lower end clamp assemblies (4) comprises lower end clamping part (41), ring spring (43) and lower end support (42); Lower end clamping part (41) has six pawl structures, and ring spring (43) is enclosed within described lower end clamping part (41), provides radial tensile force to clamp fuse (6) lower end; The lower end of lower end clamping part (41) is fixedly connected with lower end support (42).
7. fuse supporting component as claimed in claim 6, is characterized in that: described lower end clamping part (41) is copper material structure, and silver-plated at clip position.
8. fuse supporting component as claimed in claim 2, is characterized in that: the matrix (34) of fuse upper end grading shield (1), fuse lower end grading shield (3) and fuse lower end base (5) all adopts insulating material to make.
9. fuse supporting component as claimed in claim 8, is characterized in that: the inner and/or external spray metal of described matrix (34) or coated semiconductor (33).
10. fuse supporting component as claimed in claim 1 or 2, is characterized in that: base (5) both sides, fuse lower end (55) is planar structure.
11. 1 kinds of high voltage switchgears, is characterized in that: comprise the fuse supporting component (100) as described in claim 1-10 any one; Described fuse supporting component upper end is connected with the end opening electricity of on-load switch (63), and be connected with the operating mechanism machinery of on-load switch (63) by tripping operation linkage (62), the lower end of fuse supporting component (100) is connected with line cable.
12. high voltage switchgears as claimed in claim 11, it is characterized in that: when load end breaks down, single-phase or the heterogeneous fuse failure of fuse (6) of described fuse supporting component (100), trigger the action of tripping operation linkage, on-load switch (63) becomes open position from closing position, and circuit three-phase all disconnects.
CN201420333716.9U 2014-06-20 2014-06-20 Fuse supporting component on high voltage switchgear and high voltage switchgear Active CN204088246U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420333716.9U CN204088246U (en) 2014-06-20 2014-06-20 Fuse supporting component on high voltage switchgear and high voltage switchgear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420333716.9U CN204088246U (en) 2014-06-20 2014-06-20 Fuse supporting component on high voltage switchgear and high voltage switchgear

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CN204088246U true CN204088246U (en) 2015-01-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111696775A (en) * 2020-06-11 2020-09-22 广东电网有限责任公司清远供电局 Voltage transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111696775A (en) * 2020-06-11 2020-09-22 广东电网有限责任公司清远供电局 Voltage transformer

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TR01 Transfer of patent right

Effective date of registration: 20180528

Address after: Baden, Switzerland

Patentee after: ABB TECHNOLOGY LTD.

Address before: Zurich

Patentee before: ABB T & D Technology Ltd.

TR01 Transfer of patent right