KR101793547B1 - Jig for Alignment of Vacuum Interrupter - Google Patents

Jig for Alignment of Vacuum Interrupter Download PDF

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Publication number
KR101793547B1
KR101793547B1 KR1020160017881A KR20160017881A KR101793547B1 KR 101793547 B1 KR101793547 B1 KR 101793547B1 KR 1020160017881 A KR1020160017881 A KR 1020160017881A KR 20160017881 A KR20160017881 A KR 20160017881A KR 101793547 B1 KR101793547 B1 KR 101793547B1
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KR
South Korea
Prior art keywords
vacuum interrupter
jig
fixed
contact portion
seal cup
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Application number
KR1020160017881A
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Korean (ko)
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KR20170096464A (en
Inventor
윤재훈
Original Assignee
엘에스산전 주식회사
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Priority to KR1020160017881A priority Critical patent/KR101793547B1/en
Publication of KR20170096464A publication Critical patent/KR20170096464A/en
Application granted granted Critical
Publication of KR101793547B1 publication Critical patent/KR101793547B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/008—Pedestal mounted switch gear combinations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing

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  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

The present invention relates to a jig for aligning a vacuum interrupter, and more particularly, to a jig for aligning a vacuum interrupter that improves stability and assemblability by utilizing a three-point support.
The jig for vacuum interrupter alignment according to an embodiment of the present invention is a jig for aligning a vacuum interrupter for aligning a vacuum interrupter including a movable part seal cup, a fixed seal cup, a movable ceramic part, and a fixed part ceramic container, A plurality of side plates having an upper contact portion in contact therewith, an intermediate contact portion in contact with the movable ceramic cup and the fixed-portion ceramic container, and a lower contact portion in contact with the fixed seal cup; And a bottom plate provided at a lower portion of the vacuum interrupter, wherein the bottom plate can be fixed by screwing.

Description

Jig for Alignment of Vacuum Interrupter

The present invention relates to a jig for aligning a vacuum interrupter, and more particularly, to a jig for aligning a vacuum interrupter that improves stability and assemblability by utilizing a three-point support.

In general, a vacuum circuit breaker is a type of circuit breaker installed in a high-voltage power system and configured to protect the power system by shutting off the circuit in the event of a short circuit or an overcurrent, such as an excellent insulation performance in the vacuum state and an arc- And the arc is loosened in a vacuum interrupter to quickly isolate the circuit.

Here, the vacuum interrupter used as a core part of the vacuum circuit breaker is made of an electrically insulating material such as ceramic, the inside is kept in a vacuum state, and the movable contact and the fixed contact point are provided so that the arc can be promptly extinguished during opening and closing.

1 to 2 show a vacuum interrupter and a jig for assembly according to the prior art. Here, FIG. 1 is an exploded view and FIG. 2 is an assembled view.

The enclosure of the vacuum interrupter 1 is composed of a ceramic container 2, a moving part seal cup 3 and a fixed seal cup 4. The movable electrode 5 is exposed to the movable part seal cup 3 and the fixed electrode (not shown) is exposed to the fixed seal cup 4. The jig for aligning the ceramic container 2 of the vacuum interrupter 1 with the movable part seal cup 3 and the fixed seal cup 4 is composed of the upper side jig 6 and the lower side jig 7. [

Referring to the coupling diagram of FIG. The lower side jig 7 is placed on the base plate 8 and the fixing portion of the vacuum interrupter 1 is fitted to the lower side jig 7 and the upper side jig 6 is inserted into the movable part of the vacuum interrupter 1 Loses. The upper side jig 6 and the lower side jig 7 are screwed together by a long screw 9. At this time, the vacuum interrupter 1 has a two-point supporting structure in which the ceramic container 2 is contacted by the protruding portion 7a of the lower side jig 7 and the protruding portion 6a of the upper side jig 6. [

The vacuum interrupter alignment jig according to the related art is generally formed of stainless steel (STS). In order to minimize the gas generated during the brazing from the vacuum furnace to the vacuum interrupter in order to assemble the vacuum interrupter, the jig for vacuum interrupter alignment is made of a low carbon material, and the vacuum interrupter 1 Sanding is performed to prevent sticking. Further, the upper side jig 6 is made thick and heavy to give a load at the time of brazing. The upper side jig 6 and the lower side jig 7 are each formed into a cup shape so that the movable portion cup 3 and the fixed portion cup 4 are supported on the bottom surface and the projections 6a and 7a So that the ceramic container 2 is supported at two points.

However, according to the vacuum interrupter alignment jig according to the related art, when the screw 9 is fastened, a misalignment between the seal cup and the ceramic container may occur due to the error of the operator or the tolerance between the jig and the component. Further, there is a machining tolerance between the ceramic container 2 and the parts of the ceramic cups 6 and 7, so that the ceramic container 2 may be biased to one side.

On the other hand, since the upper side jig 6 for fixing the movable die cup 3 is made thick and heavy, it is difficult to work and it is difficult to load the vacuum interrupter into the vacuum furnace.

In the vacuum interrupter alignment jig according to the prior art, the two-point alignment structure requires careful attention of the operator, which greatly depends on the work skill of the operator. If the alignment between the parts does not fall within the allowable tolerance, the sealant will not be lifted due to stress during opening and closing operation of the final finished product. If the alignment of the upper side jig 6 and the lower side jig 7 is not correct during the brazing operation in the vacuum furnace, the unfolded solid cups 6 and 7 are shaken, So that misalignment may occur. In addition, since the vacuum interrupter is fixed to the jig by the fitting method, breakage may occur when the jig is removed from the product after the brazing operation.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a jig for aligning a vacuum interrupter that improves stability and assemblability by utilizing a three-point support.

The jig for vacuum interrupter alignment according to an embodiment of the present invention is a jig for aligning a vacuum interrupter for aligning a vacuum interrupter including a movable part seal cup, a fixed seal cup, a movable ceramic part, and a fixed part ceramic container, A plurality of side plates having an upper contact portion in contact therewith, an intermediate contact portion in contact with the movable ceramic cup and the fixed-portion ceramic container, and a lower contact portion in contact with the fixed seal cup; And a bottom plate provided at a lower portion of the vacuum interrupter, wherein the bottom plate can be fixed by screwing.

Here, the side plate is formed of a circular plate having a larger diameter than the movable ceramic container.

Further, the upper contact portion, the intermediate contact portion, and the lower contact portion are each provided with a screw groove through which a coupling screw can pass.

The contact surfaces of the upper contact portion, the intermediate contact portion, and the lower contact portion are each formed of a circumferential surface having the same outer diameter as that of the movable portion seal cup, the movable portion ceramic container, and the fixed seal cup.

In addition, the bottom plate is formed with an insertion groove into which the fixed-end seal cup can be inserted.

The base plate may further include a base plate in the form of a tube so that the base plate can be installed.

In addition, the bottom plate may have a downwardly protruding portion to be inserted into the base plate.

A plurality of screw holes for fastening the engaging screw are formed on the outer frame of the bottom plate.

According to the jig for aligning a vacuum interrupter according to an embodiment of the present invention, the supporting point is enlarged to three points to facilitate alignment and improve stability and assemblability.

Further, since the vacuum interrupter is not coupled to the jig by the fitting method but is supported by the screw coupling, no cracking occurs at the time of coupling and removal.

1 is an exploded perspective view of a vacuum interrupter alignment jig according to the prior art.
2 is an assembled view of a vacuum interrupter alignment jig according to the prior art.
3 is a longitudinal sectional view of a vacuum interrupter applied to an embodiment of the present invention.
4 is an exploded perspective view of a vacuum interrupter alignment jig according to an embodiment of the present invention.
5 is an assembled view of a vacuum interrupter alignment jig according to an embodiment of the present invention.
6 is a perspective view of a side plate applied to a vacuum interrupter alignment jig according to an embodiment of the present invention.
7 is a perspective view of a bottom plate applied to a vacuum interrupter alignment jig according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to illustrate the present invention in a manner that allows a person skilled in the art to easily carry out the invention. And does not mean that the technical idea and scope of the invention are limited.

3 is a longitudinal sectional view of a vacuum interrupter applied to an embodiment of the present invention. FIG. 4 is an exploded perspective view of a vacuum interrupter alignment jig according to an embodiment of the present invention, and FIG. 5 is an assembled view. 6 and 7 are perspective views of a side plate and a bottom plate which are applied to a vacuum interrupter alignment jig according to an embodiment of the present invention. The jig for vacuum interrupter alignment according to each embodiment of the present invention will be described in detail with reference to the drawings.

The vacuum interrupter aligning jig according to the embodiment of the present invention includes the vacuum interrupter 20 including the movable part seal 22, the fixed seal cup 21, the movable part ceramic container 24, and the fixed-portion ceramic container 23 The jig for aligning a vacuum interrupter according to any one of claims 1 to 3, further comprising: an upper contact portion (11) for contacting the moving part seal cup (22); an intermediate contact portion (14) contacting the movable ceramic container (24) A side plate (10) having a lower contact portion (17) in contact with the fixed seal cup (21); And a bottom plate (30) provided at a lower portion of the vacuum interrupter (20) and capable of fixing the side plate (10) by screwing.

The vacuum interrupter 20 applied to an embodiment of the present invention is formed into an outer shape by the fixed portion seal cup 21, the moving part seal cup 22, the fixed portion ceramic container 23 and the movable portion ceramic container 24 as a whole. The stationary seal cup 21 and the movable seal cup 22 may be formed of stainless steel or alloy such as SUS303. The stationary seal cup 21 and the movable seal cup 22 serve to maintain the mechanical strength of the stationary and movable parts and the vacuum inside the vacuum interrupter.

The ceramic vessels 23 and 24 form a side surface contour of the vacuum interrupter. The ceramic vessels 23 and 24 may be formed in the form of a circular tube and the fixed electrode 25 is provided in the fixed ceramic vessel 23 and the movable electrode 26 is installed in the movable ceramic vessel 24 do.

The fixed-portion seal cup 21 is coupled to the lower end of the fixed-vessel ceramic container 23 and the movable-portion cup 22 is coupled to the upper end of the movable-portion ceramic container 23. The vacuum interrupter forms a closed space by the fixed-portion ceramic container 23, the movable-portion ceramic container 24, the fixed-portion seal cup 21, and the moving-part seal cup 22. The inside of the closed space is kept vacuum.

The fixed electrode 25 is inserted through the center of the fixed-portion solid cup 21.

The movable electrode 26 is connected to a movable rod (not shown) and moves up and down, and can be contacted or separated from the fixed electrode 25.

The bellows 28 is provided inside the movable side seal cup 22 so that the inside of the vacuum interrupter can maintain a vacuum even if the movable electrode 26 moves up and down. The bellows 28 may be provided with a bellows shield 29 that protects against metal melt generated during current interruption.

The center shield 27 is installed inside the ceramic vessels 23 and 24 to protect the ceramic vessels 23 and 24 from the metal vapors generated during the interruption.

The vacuum interrupter alignment jig may be composed of a plurality of side plates 10 and a bottom plate 30.

The side plate 10 may be formed as a curved plate in the shape of a circumferential surface having a diameter larger than that of the ceramic vessels 23 and 24. The side plate 10 may be formed to have a length extending from the fixed-portion seal cup 21 to the moving-part seal cup 22.

An upper contact portion 11, an intermediate contact portion 14, and a lower contact portion 17 are protruded from the side plate 10 inwardly.

The upper contact portion 11 may protrude from the upper end of the side plate 10. [ The upper contact portion 11 is a portion contacting the fixed-portion seal cup 21. The upper contact portion 11 is formed with an upper thread groove 12 at a central portion thereof. Accordingly, the engaging screw 40 can be inserted through the through hole. The upper contact surface 13 of the upper contact portion 11 may be formed to have the same circumferential surface as the outer diameter of the moving part solid cup 22. [ Accordingly, when the cup is in contact with the fixed cup (21), the contact force can be increased.

The intermediate contact portion 14 is protruded from the middle portion of the side plate 10. The intermediate contact portion 14 is a portion in contact with the fixed-portion ceramic container 23 and the movable portion ceramic container 24. An intermediate threaded groove 15 is formed at the center of the intermediate contacted portion 14. Accordingly, the engaging screw 40 can be inserted through the through hole. The intermediate contact surface 16 of the intermediate contact portion 14 may be formed to have the same circumferential surface as the outer diameter of the ceramic containers 23 and 24. [ Accordingly, when the cup is in contact with the fixed cup (21), the contact force can be increased.

The lower contact portion 17 is protruded from the upper end of the side plate 10. The lower contact portion 17 is a portion that contacts the fixed-portion seal cup 21. The lower contact portion 17 is formed with a lower thread groove 18 at a central portion thereof. Accordingly, the engaging screw 40 can be inserted through the through hole. The lower contact surface 19 of the lower contact portion 17 may be formed to have the same circumferential surface as the outer diameter of the fixed-portion seal cup 21. Accordingly, when the cup is in contact with the fixed cup (21), the contact force can be increased.

The bottom plate 30 may be composed of a disc. The bottom plate (30) may be formed with an insertion groove (31) into which the stationary seal cup (21) can be inserted. The insertion groove 31 may be formed with a downwardly projecting portion 32. The bottom plate 30 may be provided with a through hole 33 through which a fixed electrode may be exposed. A plurality of screw holes (34) are formed in the outer frame portion of the bottom plate (30).

The base plate 45 is provided for installing the bottom plate 30. The base plate 45 may be formed as a circular tube.

An assembly process of the vacuum interrupter alignment jig according to an embodiment of the present invention will be described.

The bottom plate 30 is placed on the base plate 45. At this time, the protrusion 32 of the bottom plate 30 may be fitted to the base plate 45.

The fixed-portion seal cup 21, the fixed-portion ceramic container 23, the movable-portion ceramic container 24, and the moving-part seal cup 22 are stacked on the bottom plate 30 in this order. Here, the internal components of the vacuum interrupter are stacked in a state where they are installed in the fixed-portion seal cup 21, the fixed-portion ceramic container 23, the movable-portion ceramic container 24, and the moving-part seal cup 22.

Thereby joining the side plate 10 to the periphery of the vacuum interrupter. At this time, the upper contact portion 11 is in contact with the moving part solid cup 22, the intermediate contact portion 14 is in contact with the fixed-portion ceramic container 23 and the movable portion ceramic container 24 and the lower contact portion 17 is in contact with the fixed- As shown in Fig. The side plates 10 may be provided in three or more.

The respective side plates 10 are engaged with the screw holes 34 of the bottom plate 30 by using the engaging screws 40. The engaging screw 40 can fix the upper contact portion 11 and the bottom plate 30.

According to the jig for aligning a vacuum interrupter according to an embodiment of the present invention, the support point is enlarged to three points to facilitate alignment, and stability and assemblability are improved.

In addition, since the vacuum interrupter is combined with a simple supporting method by a screw connection, not a method of fitting the vacuum interrupter to the jig, there is an effect that the possibility of difficulty or breakage is reduced.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. That is, the scope of protection of the present invention should be construed according to the following claims, and all technical ideas which are within the scope of the same should be interpreted as being included in the scope of the present invention.

10 side plate 11 upper contact portion
12 upper screw groove 13 upper contact surface
14 Middle contact 15 Middle thread
16 intermediate contact surface 17 bottom contact
18 Lower thread groove 19 Lower contact surface
20 Vacuum Interrupter 21 Fixed Seal Cup
22 Movable part seal cup 23 Fixed part Ceramic container
24 Movable part Ceramic container 25 Fixed electrode
26 movable electrode 27 center shield
28 Bellows 29 Bellows shield
30 Base plate 31 Insertion groove
32 protrusion 33 through hole
34 Screw Hole 40 Coupling Screw
45 base plate

Claims (8)

A jig for aligning a vacuum interrupter for aligning a vacuum interrupter including a movable portion seal cup, a fixed portion seal cup, a movable portion ceramic container, and a fixed portion ceramic container,
A plurality of side plates having an upper contact portion contacting the movable portion seal cup, an intermediate contact portion contacting the movable portion ceramic container and the fixed-portion ceramic container, and a lower contact portion contacting the fixed seal cup; And
And a bottom plate provided below the vacuum interrupter and capable of being fixed by screwing the side plate,
Wherein the side plate is formed of a circular plate having a larger diameter than the movable ceramic vessel,
Wherein a cross section of the side plate is formed in an arc shape,
Wherein the side plate is formed to have a length extending from the movable part seal cup to the fixed seal cup,
Wherein the upper contact portion, the intermediate contact portion, and the lower contact portion are protruded inward from the side plate. delete The jig for aligning a vacuum interrupter according to claim 1, wherein screw threads are formed in the upper contact portion, the intermediate contact portion, and the lower contact portion, respectively, through which engaging screws can pass. The jig for aligning a vacuum interrupter according to claim 1, wherein the contact surfaces of the upper contact portion, the intermediate contact portion, and the lower contact portion are formed to have the same circumferential surface as that of the movable portion seal cup, the movable portion ceramic container, and the fixed seal cup, respectively. The jig for aligning a vacuum interrupter according to claim 1, wherein the bottom plate is formed with an insertion groove into which the fixed seal cup can be inserted. The jig for aligning a vacuum interrupter according to claim 1, further comprising a base plate in the form of a tube so that the bottom plate can be installed. The jig for aligning a vacuum interrupter according to claim 6, wherein the bottom plate is formed with a downwardly protruding portion to be fitted to the base plate. The jig for aligning a vacuum interrupter according to claim 3, wherein a plurality of screw holes for fastening the engaging screw are formed on an outer frame of the bottom plate.
KR1020160017881A 2016-02-16 2016-02-16 Jig for Alignment of Vacuum Interrupter KR101793547B1 (en)

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KR1020160017881A KR101793547B1 (en) 2016-02-16 2016-02-16 Jig for Alignment of Vacuum Interrupter

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KR101793547B1 true KR101793547B1 (en) 2017-11-03

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110144573B (en) * 2019-05-08 2021-10-29 平高集团有限公司 Vacuum arc-extinguishing chamber silver plating device and vacuum arc-extinguishing chamber silver plating tool
KR102416268B1 (en) * 2020-12-11 2022-07-06 (주)창성정공 A jig for brazing of vacuum interrupter and manufacturing method for vacuum interrupter using the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104934249A (en) * 2015-06-12 2015-09-23 温州浙光电子有限公司 Assembling and brazing fixture for one-step seal-exhaust of ceramic vacuum arc-extinguishing chamber

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104934249A (en) * 2015-06-12 2015-09-23 温州浙光电子有限公司 Assembling and brazing fixture for one-step seal-exhaust of ceramic vacuum arc-extinguishing chamber

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