Insulating assembly for isolating switch and isolating switch with same

Abstract

The utility model relates to an insulating assembly for an isolating switch and the isolating switch with the insulating assembly. The insulating assembly comprises an insulating cylinder which is arranged between the switch main body and the supporting base and extends in the vertical direction, and the two vertical ends of the insulating cylinder are each provided with a mounting groove which is recessed in the vertical direction. The adhesive comprises an adhesive layer smeared on the peripheries of the two vertical ends of the insulating cylinder and an adhesive part filled in the mounting grooves in the two vertical ends of the insulating cylinder; the upper outer cap and the lower outer cap are respectively connected to the peripheries of the two vertical ends of the insulating cylinder in a sleeving manner so as to be bonded to the two vertical ends of the insulating cylinder through the bonding layers at the two vertical ends of the insulating cylinder; and at least one upper fastener and at least one lower fastener, the at least one upper fastener passes through the switch main body and the upper outer cap to be connected with the bonding part at the vertical upper end of the insulating cylinder, and the at least one lower fastener passes through the supporting base and the lower outer cap to be connected with the bonding part at the vertical lower end of the insulating cylinder.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical equipment technical field especially relates to the insulation assembly for disconnecting switch and has its disconnecting switch. BACKGROUND

[0002] Disconnecting switch is widely used as an important switching device in power plant and substation and other equipment to isolate the part to be overhauled from the live part during overhaul, so as to realize safe overhaul and maintenance. Disconnecting switch can include a support base, an insulation assembly mounted to the support base, and a switch main body mounted to the insulation assembly, so that the switch main body is reliably supported and reliable insulation is provided between the switch main body and the support base.

[0003] However, the insulation assembly in the prior art is usually provided with metal inserts in both ends of the insulation column and the metal inserts are bonded to the corresponding end portions, so as to install the insulation assembly to the support base and the switch main body on both sides by means of the metal inserts at both ends. However, this will result in the problem that the contact area between the metal insert and the insulation column is small and the connection strength is weak, which will easily lead to the risk of the metal insert falling off from the insulation column when a torsion is applied to the metal insert. If the above-mentioned defect is solved by directly enhancing the bonding strength between the metal insert and the insulation column, there will be the risk that the end portion of the insulation column is easily broken when a torsion is applied to the metal insert.

[0004] Therefore, there is a demand for an insulation assembly with high reliability in the field. SUMMARY

[0005] The utility model aims at providing an insulation assembly which can at least solve part of the above-mentioned problems.

[0006] The utility model also aims at providing a disconnecting switch applying the improved insulation assembly.

[0007] According to one aspect of the utility model, provide a kind of for disconnecting switch's insulation assembly, the disconnecting switch further include switch main body and support base being arranged vertically spaced apart from each other, the insulation assembly includes: insulation column, it is arranged between the switch main body and the support base and extends along vertical, the vertical both ends of the insulation column are equipped with recessed vertically along installation slot;Adhesive, it includes the adhesive layer that is applied on the outer periphery of the vertical both ends of the insulation column and the adhesive part filled into the installation slot of the vertical both ends of the insulation column;Upper outer cap and lower outer cap, it is respectively sleeved to the outer periphery of the vertical both ends of the insulation column, to be adhered to the vertical both ends of the insulation column via the adhesive layer of the vertical both ends of the insulation column;At least one upper fastener and at least one lower fastener, the at least one upper fastener is connected with the adhesive part of the vertical upper end of the insulation column by passing through the switch main body and the upper outer cap, the at least one lower fastener is connected with the adhesive part of the vertical lower end of the insulation column by passing through the support base and the lower outer cap, to install the vertical both ends of the insulation assembly to the switch main body and the support base respectively.

[0008] Compared with prior art, the upper outer cap and lower outer cap in the utility model are adhered to the outer periphery of the vertical both ends of the insulation column by means of adhesive layer, to improve the connection strength while increasing the contact area of outer cap and insulation column. In addition, by passing the upper fastener and lower fastener through the upper outer cap and lower outer cap respectively and cooperating with the adhesive part of the vertical both ends of the insulation column, the upper fastener and lower fastener can be connected to the insulation column via the adhesive part, which can reduce or even avoid applying force to the insulation column during installation of the upper fastener and lower fastener, so that the insulation assembly in the utility model can be applicable to more harsh working conditions.

[0009] Preferably, the inner periphery of the upper outer cap and the lower outer cap is provided with at least one connecting recess extending circumferentially and arranged vertically side by side, so that at least one connecting protrusion can be formed on the outer periphery of the adhesive layer of the vertical both ends of the insulation column when connected to the adhesive layer of the vertical both ends of the insulation column.

[0010] Preferably, each connecting recess on the upper outer cap and the lower outer cap is arranged segmentally spaced apart circumferentially.

[0011] Preferably, the upper outer cap is provided with at least one upper connecting hole for the at least one upper fastener to pass through, and the inner end face of the upper outer cap is provided with at least one upper thickening portion surrounding each upper connecting hole; the lower outer cap is provided with at least one lower connecting hole for the at least one lower fastener to pass through, and the inner end face of the lower outer cap is provided with at least one lower thickening portion surrounding each lower connecting hole.

[0012] Preferably, the number of the at least one upper fastener and the corresponding upper connecting hole is configured as two, and the number of the at least one lower fastener and the corresponding lower connecting hole is configured as two, wherein the interval of the two upper connecting holes is configured to be smaller than the interval of the two lower connecting holes.

[0013] Preferably, the insulating column body is integrally casted, and a double-layer cladding layer is arranged on the outer surface of the insulating column body.

[0014] Preferably, at least one upper insertion hole adapted for insertion of the at least one upper fastener is formed on the bonding part of the vertical upper end of the insulating column body; and at least one lower insertion hole adapted for insertion of the at least one lower fastener is formed on the bonding part of the vertical lower end of the insulating column body.

[0015] Preferably, an upper helical groove is arranged on the outer periphery of the section of each upper fastener inserted into the corresponding upper insertion hole; and a lower helical groove is arranged on the outer periphery of the section of each lower fastener inserted into the corresponding lower insertion hole.

[0016] Preferably, the upper outer cap and the lower outer cap are both made of metal.

[0017] According to another aspect of the present application, there is also provided an isolating switch, which comprises a switch main body and a supporting base arranged at a distance from each other, and further comprises the aforementioned insulating assembly.

[0018] Some of the other features and advantages of the present application will be apparent from the detailed description that follows, taken in conjunction with the accompanying drawings, which together illustrate by way of example, not limitation, certain principles of the application. BRIEF DESCRIPTION OF DRAWINGS

[0019] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0020] Figure 1 is a perspective view of the insulating assembly according to the present application;

[0021] Figure 2 is a side view of the insulating assembly according to the present application;

[0022] Figure 3 is a sectional view of the insulating assembly according to the present application;

[0023] Figure 4a is Figure 3 is a partial enlarged view of the area A in FIG. 4;

[0024] Figure 4b is Figure 3 is a partial enlarged view of the area B in FIG. 4.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 100 - insulating assembly; 10 - insulating column; 11 - intermediate section; 12 - vertical upper end; 13 - vertical lower end; 14 - mounting slot; 21 - adhesive layer; 211 - connecting protrusion; 22 - adhesive portion; 23 - additional adhesive layer; 31 - upper outer cap; 311 - upper connecting hole; 32 - lower outer cap; 321 - lower connecting hole; 33 - connecting recess; 40 - upper fastener. DETAILED DESCRIPTION

[0027] With reference to the drawings, a schematic scheme of the insulating assembly for isolating switch disclosed by the utility model will be described in detail. Although the drawings are provided to present some embodiments of the utility model, the drawings are not necessarily drawn according to the size of the specific embodiments, and some features can be enlarged, removed or partially cut to better show and explain the disclosure of the utility model. The positions of some components in the drawings can be adjusted according to actual needs without affecting the technical effects. The phrase "in the drawings" or similar language appearing in the specification does not necessarily refer to all drawings or examples.

[0028] In the following, some directional terms used to describe the drawings, such as "inner", "outer", "upper", "lower" and other directional terms, will be understood to have their normal meanings and refer to those directions involved when normally looking at the drawings. Unless otherwise specified, the directional terms described in the specification are basically in the conventional direction as understood by those skilled in the art.

[0029] The terms "first", "the first", "second", "the second" and similar terms used in the utility model do not represent any order, quantity or importance in the utility model, but are used to distinguish one component from other components.

[0030] The terms "joint", "connection" and similar terms used in the utility model include both indirect connection of two components by means of an intermediate layer such as an adhesive, a soldering agent, etc. or an intermediate piece such as a connecting piece, a transition piece, etc. and direct connection of two components without the aid of any intermediate layer such as an adhesive, a soldering agent, etc. or an intermediate piece such as a connecting piece, a transition piece, etc.

[0031] Figures 1 to 4b The insulating assembly 100 of the utility model is shown by way of example, and the isolating switch to which the insulating assembly 100 in the example is applied can include a support base and a switch body located above the support base. The insulating assembly 100 can extend vertically between the support base and the switch body and be connected to the support base and the switch body at the vertical two ends respectively, so as to mount the switch body to the support base via the insulating assembly 100, to ensure safe and reliable operation of the isolating switch. It can be understood that "vertical" in this paper refers to the up-down direction of the page. Figure 3 The up-down direction of the page.

[0032] As shown in Figure 1 and Figure 2 , the insulation assembly 100 can include an insulation post 10, an adhesive, an upper outer cap 31, a lower outer cap 32, at least one upper fastener 40, and at least one lower fastener.

[0033] In particular, the insulation post 10 can be integrally casted from an insulating material such as ceramic, thereby providing good electrical performance and sufficient mechanical performance. The insulation post 10 can extend vertically between the switch body and the support base, and an umbrella skirt can be provided on the outer periphery of a generally middle section 11 of the insulation post 10 to increase the creepage distance of the insulation post 10. Both vertical ends of the insulation post 10 can be configured as generally cylindrical structures and each is provided with a vertically inwardly recessed mounting groove 14.

[0034] As shown in Figures 3 to 4b , the adhesive such as Portland cement can be applied to the outer periphery of both vertical ends of the insulation post 10 to form an adhesive layer 21. The upper outer cap 31 and the lower outer cap 32, which are made of metal and respectively sleeved to both vertical ends of the insulation post 10, can be adhered to the outer periphery of the corresponding vertical end after the corresponding adhesive layer 21 is cured. Compared with the metal inserts in the prior art which are adhered to the inside of the insulation post 10, the outer caps adhered to the outer periphery of the vertical ends of the insulation post 10 have a larger contact area with the insulation post 10, and the amount of the adhesive layer 21 arranged therebetween is larger, thereby increasing the connection strength between the outer cap and the insulation post 10.

[0035] The adhesive can also be filled into the mounting groove 14 of both vertical ends of the insulation post 10 to form an adhesive portion 22. In this way, the upper fastener 40 can pass through the switch body and the upper outer cap 31 from top to bottom to enter the adhesive portion 22 of the vertical upper end 12 of the insulation post 10, and the lower fastener can pass through the support base and the lower outer cap 32 from bottom to top to enter the adhesive portion 22 of the vertical lower end 13 of the insulation post 10, and then when the adhesive portion 22 is cured, the upper fastener 40 can fix the switch body to the upper side of the insulation assembly 100, and the lower fastener can fix the support base to the lower side of the insulation assembly 100, thereby achieving the fixation of the insulation assembly 100 to the switch body and the support base.

[0036] Optionally, the adhesive can also include an additional adhesive layer 23 applied to the end face of both vertical ends of the insulation post 10 and covering the corresponding adhesive portion 22, to further improve the connection strength between the outer cap and the insulation post 10.

[0037] In this way, not only are the outer cap and insulating cylinder 10 secured to each other via the adhesive layer 21 therebetween, but the fastener, which passes through the outer cap and connects to the adhesive portion 22, also fastens the outer cap to the insulating cylinder 10, further improving the connection strength between the outer cap and the insulating cylinder 10. Furthermore, the fastener primarily cooperates with the adhesive portion 22, so that when the fastener is mounted on the corresponding outer cap, force is primarily applied to the uncured adhesive portion 22, with little effect on the vertical ends of the insulating cylinder 10. Even if the fastener applies force to the outer periphery of the vertical ends of the insulating cylinder 10 through the outer cap, the insulating cylinder 10 is substantially unaffected due to the increased contact area between the outer cap and the insulating cylinder 10.

[0038] Alternatively, as Figures 3 to 4a As shown, the upper outer cap 31 may be provided with three connecting recesses 33 extending circumferentially and arranged vertically side by side. In an embodiment not shown, the number of connecting recesses 33 on the upper outer cap 31 may also be selected according to actual needs. As shown, the upper outer cap 31 is sleeved onto the vertical upper end 12 of the insulating cylinder 10 when the adhesive layer 21 at the vertical upper end 12 of the insulating cylinder 10 is not cured. After the adhesive layer 21 at the vertical upper end 12 of the insulating cylinder 10 is cured, three connecting protrusions 211 corresponding to the three connecting recesses 33 are formed on the outer periphery of the adhesive layer 21 at the vertical upper end 12 of the insulating cylinder 10. Compared to the upper outer cap 31 and the adhesive layer 21 at the vertical upper end 12 of the insulating cylinder 10 that are in planar contact with each other, the upper outer cap 31 and the adhesive layer 21 in the present invention are connected in a form-fitting manner to each other, ensuring a reliable connection between the upper outer cap 31 and the insulating cylinder 10 even when the adhesive layer 21 is not uniformly cured.

[0039] Alternatively, in an embodiment not shown, each connection recess 33 on the upper outer cap 31 may be arranged in segments and at intervals in the circumferential direction, which correspondingly forms connection protrusions 211 arranged in segments and at intervals in the circumferential direction on the adhesive layer 21 of the vertical upper end 12 of the insulating cylinder 10. Thus, the upper outer cap 31 and the vertical upper end 12 of the insulating cylinder 10 form multiple spaced connection points in the circumferential direction, which can improve the distribution of the force that the upper outer cap 31 may exert on the vertical upper end 12 of the insulating cylinder 10, thereby enabling the insulating cylinder 10 to withstand greater forces.

[0040] Alternatively, as Figures 3 to 4a As shown, the upper outer cap 31 may be provided with two upper connection holes 311, and preferably arranged symmetrically about the axis of the upper outer cap 31. In an embodiment not shown, the inner end surface of the upper outer cap 31 may be provided with an upper thickened portion surrounding each connection hole. This can reduce the size of the upper outer cap 31 while increasing the strength of the area around the upper connection holes 311 of the upper outer cap 31, thereby avoiding the risk of possible cracking.

[0041] Correspondingly, the number of the upper fasteners 40 can also be two, and the two upper fasteners 40 respectively pass through the corresponding upper connecting holes 311 into the adhesive part 22 of the vertical upper end 12 of the insulating column body 10, so as to fasten the switch main body and the upper outer cap 31 to the insulating column body 10.

[0042] In combination Figure 4b As shown, the number of the connecting recesses 33, the lower connecting holes 321, the thickened part and the number of the lower fasteners connected to the lower outer cap 32 on the lower outer cap 32 can be respectively configured in the same way as the number of the connecting recesses 33, the upper connecting holes 311, the thickened part and the number of the upper fasteners 40 connected to the upper outer cap 31 on the upper outer cap 31, and details are not repeated here.

[0043] Preferably, the spacing of the two upper connecting holes 311 on the upper outer cap 31 can be smaller than the spacing of the two lower connecting holes 321 on the lower outer cap 32, which takes into account that the switch main body located above the insulating assembly 100 needs to be externally connected to the conductor and will exert additional force on the upper outer cap 31, especially in the outdoor environment along the coast where the wind is relatively large, and therefore, the two upper connecting holes 311 which are more concentrated relative to the two lower connecting holes 321 can improve the influence of the additional force on the insulating assembly 100.

[0044] Optionally, in an embodiment not shown, a double glaze layer process can be used to arrange a double-layer coating on the outer surface of the insulating column body 10 to improve the ability of the insulating column body 10 to cope with corrosive environments such as high ultraviolet light, high sunlight intensity and high salinity along the coast. In particular, the vertical two ends of the insulating column body 10 in the utility model are respectively accommodated in the upper outer cap 31 and the lower outer cap 32, which can avoid affecting the edge closing process of the double glaze layer of the insulating column body 10.

[0045] Optionally, as Figures 3 to 4a As shown, the upper fastener 40 can be designed as a screw rod, and therefore an upper spiral groove can be arranged on the outer periphery of the upper fastener 40. Thus, when the upper fastener 40 is connected to the insulating column body 10, the upper fastener 40 passes through the upper connecting holes 311 on the switch main body and the upper outer cap 31 and is screwed into the uncured adhesive part 22 of the vertical upper end 12 of the insulating column body 10, thereby forming an upper insertion hole in the uncured adhesive part 22 of the vertical upper end 12 of the insulating column body 10, and after the adhesive part 22 of the vertical upper end 12 of the insulating column body 10 is cured, an upper threaded protrusion corresponding to the shape of the upper spiral groove is also formed.

[0046] It can be understood that the lower fastener and the adhesive part 22 of the vertical lower end 13 of the insulating column body 10 are respectively configured in the same way as the upper fastener 40 and the adhesive part 22 of the vertical upper end 12 of the insulating column body 10, and details are not repeated here.

[0047] It should be understood that although the present specification is described in terms of various embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0048] The above merely illustrates the specific implementation of the present application, and is not intended to limit the scope of the present application. Any equivalent changes, modifications and combinations made by those skilled in the art without departing from the concept and principles of the present application shall fall within the scope of the present application.

Claims

1. An insulating assembly (100) for a disconnector, the disconnector further comprising a switch body and a support base arranged vertically spaced apart from each other, characterized in that, The insulation assembly (100) comprises: an insulation column (10) arranged between the switch body and the support base and extending vertically, vertical two ends of the insulation column (10) are each provided with a vertically concave mounting groove (14); an adhesive agent comprising an adhesive layer (21) applied on the outer periphery of the vertical two ends of the insulation column (10) and an adhesive part (22) filled into the mounting groove (14) of the vertical two ends of the insulation column (10); an upper outer cap (31) and a lower outer cap (32) respectively sleeved to the outer periphery of the vertical two ends of the insulation column (10) to be adhered to the vertical two ends of the insulation column (10) via the adhesive layer (21) of the vertical two ends of the insulation column (10); at least one upper fastener (40) and at least one lower fastener, the at least one upper fastener (40) is connected with the adhesive part (22) of the vertical upper end (12) of the insulation column (10) by penetrating through the switch body and the upper outer cap (31), the at least one lower fastener is connected with the adhesive part (22) of the vertical lower end (13) of the insulation column (10) by penetrating through the support base and the lower outer cap (32), so as to respectively mount the vertical two ends of the insulation assembly (100) to the switch body and the support base.

2. The insulating assembly (100) for a disconnector according to claim 1, characterized in that The inner periphery of the upper outer cap (31) and the lower outer cap (32) is respectively provided with at least one connecting recess (33) extending in the circumferential direction and arranged vertically side by side, so that, when connected to the adhesive layer (21) of the vertical two ends of the insulation column (10), the outer periphery of the adhesive layer (21) of the vertical two ends of the insulation column (10) can form at least one connecting protrusion (211) adapted to the corresponding at least one connecting recess (33).

3. The insulating assembly (100) for a disconnector according to claim 2, characterized in that Each connecting recess (33) on the upper outer cap (31) and the lower outer cap (32) is arranged in a circumferential sectional interval.

4. The insulating assembly (100) for a disconnector according to claim 1, characterized in that The upper outer cap (31) is provided with at least one upper connecting hole (311) for the at least one upper fastener (40) to penetrate through, and the inner end face of the upper outer cap (31) is provided with at least one upper thickened part surrounding each upper connecting hole (311); the lower outer cap (32) is provided with at least one lower connecting hole (321) for the at least one lower fastener to penetrate through, and the inner end face of the lower outer cap (32) is provided with at least one lower thickened part surrounding each lower connecting hole (321).

5. The insulating assembly (100) for a disconnector according to claim 4, characterized in that The number of the at least one upper fastener (40) and the corresponding upper connecting hole (311) is configured as two, and the number of the at least one lower fastener and the corresponding lower connecting hole (321) is configured as two, wherein the spacing of the two upper connecting holes (311) is configured to be smaller than the spacing of the two lower connecting holes (321).

6. The insulating assembly (100) for a disconnector according to claim 1, characterized in that The insulation column (10) is integrally cast, and a double-layer cladding layer is arranged on the outer surface of the insulation column (10).

7. The insulating assembly (100) for a disconnector according to claim 1, characterized in that At least one upper insertion hole suitable for the insertion of said at least one upper fastener (40) is formed on the adhesive portion (22) of the vertical upper end (12) of said insulating column (10); at least one lower insertion hole suitable for the insertion of said at least one lower fastener is formed on the adhesive portion (22) of the vertical lower end (13) of said insulating column (10).

8. The insulating assembly (100) for a disconnector according to claim 7, characterized in that An upper helical groove is provided on the outer periphery of the section into which each upper fastener (40) is inserted; a lower helical groove is provided on the outer periphery of the section into which each lower fastener is inserted.

9. The insulating assembly (100) for a disconnector according to claim 1, characterized in that, Said upper outer cap (31) and said lower outer cap (32) are both made of metal.

10. An isolating switch comprising a switch main body and a support base arranged apart from each other, characterized in that, The isolating switch further comprises an insulating assembly (100) according to any one of claims 1 to 9. The isolating switch further comprises an insulating assembly (100) according to any one of claims 1 to 9.

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