CN111129994B - Method for separating vacuum package and insulator by vacuum circuit breaker - Google Patents
Method for separating vacuum package and insulator by vacuum circuit breaker Download PDFInfo
- Publication number
- CN111129994B CN111129994B CN202010004925.9A CN202010004925A CN111129994B CN 111129994 B CN111129994 B CN 111129994B CN 202010004925 A CN202010004925 A CN 202010004925A CN 111129994 B CN111129994 B CN 111129994B
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- insulator
- vacuum bag
- special cutter
- cutter
- vacuum
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses a method for separating a vacuum bag from an insulator of a vacuum circuit breaker. Firstly, vertically placing the insulator, and symmetrically fixing the insulator by using a clamp; then, mounting and fixing the special cutter on a rotating shaft of a vertical processing machine tool, setting processing parameters, starting the vertical processing machine tool, and removing the cured insulating glue filled between the insulator and the vacuum bag; after the processing is stopped, the special cutter is lifted, and the vacuum bag is separated from the interior of the special cutter by a crowbar. The vacuum bag is successfully separated from the interior of the insulator under the condition of not damaging the structures of the insulator and the vacuum bag body. The method is simple and reasonable, and reduces the maintenance cost of the vacuum circuit breaker.
Description
Technical Field
The invention relates to a vacuum circuit breaker overhauling technology for an electrified traction rail transit vehicle, in particular to a method for separating a vacuum bag and an insulator by using a vacuum circuit breaker.
Background
The vacuum circuit breaker takes vacuum as an insulating medium and an arc extinguishing medium, has the technical characteristics of simple structure, reliable work, large breaking capacity, high insulating strength and the like, is widely applied to modern electrified rail transit vehicles, and is a master switch for connecting and disconnecting a contact network and a train power supply.
The vacuum bag is a key part of the vacuum circuit breaker and is solidified at the center of the inner hole of the insulator through a glue pouring process method. When the service life of the vacuum package reaches the limit or the vacuum circuit breaker needs to be dismounted and repaired when a fault occurs, engineering technicians are required to solve the technical difficulty of separating the vacuum package from the insulator, and a reasonable and economic repair scheme is formulated.
The prior art has no simple, reasonable, economic and practical scheme.
Disclosure of Invention
The invention aims to provide a method for separating a vacuum bag and an insulator by a vacuum circuit breaker.
The purpose of the invention is realized by the following technical scheme:
the invention discloses a method for separating a vacuum bag and an insulator by a vacuum circuit breaker, which has the following preferred specific implementation modes:
the method separates a vacuum bag from the interior of an insulator by utilizing a vertical processing machine tool, a special cutter, a clamp and a crowbar, and comprises the following steps:
A. vertically placing the insulator, wherein an upper flange of the insulator is symmetrically fixed by two sets of the clamps;
B. mounting and fixing the special cutter on a rotating shaft of the vertical processing machine tool, setting processing parameters, and aligning the center of the special cutter with the center of the inner hole of the insulator;
C. starting a vertical processing machine tool, vertically processing along the center of the inner hole of the insulator downwards at a set feed amount and a set rotating speed, and removing cured insulating glue filled between the insulator and the vacuum bag;
when the special cutter moves downwards for a certain distance, the processing is suspended, and the solidified insulating glue cutting scraps at the upper end part of the vacuum bag are cleaned and removed through the rectangular hole of the special cutter;
D. injecting cooling liquid along the circumferential gap between the special cutter and the insulator, and cooling for a period of time after injecting the cooling liquid for a period of time;
E. repeating the step C, D, and continuing to process until the lower edge of the special cutter is flush with the joint of the lower end part of the vacuum bag and the insulator, and stopping processing;
F. lifting the special cutter along the center of the inner hole of the insulator, lifting the vacuum bag and the solidified insulating glue cuttings wrapped on the circumferential surface of the vacuum bag together with the special cutter, and separating the vacuum bag from the inner hole of the insulator;
G. and the crowbar extends into the rectangular hole of the special cutter, the end part of the crowbar is propped against the upper end surface of the vacuum bag, a downward acting force is applied, and the vacuum bag is separated from the inside of the special cutter.
According to the technical scheme provided by the invention, the method for separating the vacuum bag from the insulator of the vacuum circuit breaker provided by the embodiment of the invention successfully separates the vacuum bag from the interior of the insulator under the condition of not damaging the structures of the insulator and the vacuum bag body. The method is simple and reasonable, and reduces the maintenance cost of the vacuum circuit breaker.
Drawings
Fig. 1 is a schematic view illustrating an assembly of a vacuum bag, an insulator and cured insulating paste in a vacuum circuit breaker according to an embodiment of the present invention.
Fig. 2a, 2b and 2c are schematic diagrams of the special cutter according to the embodiment of the invention respectively illustrating the structure of the special cutter in an annotated, side-looking and top-looking manner.
Fig. 3 is a schematic view of fixing a flange on an insulator according to an embodiment of the present invention.
FIG. 4 is a schematic diagram of vacuum bag processing separation according to an embodiment of the present invention.
In the figure:
1. the device comprises a vertical processing machine tool 2, a special cutter 3, a clamp 4, a crowbar 5, a vacuum bag 6, an insulator 7, an upper end flange 8, a cutter body 9, a lower cutter edge 10, a connecting rod 11 and cured insulating glue.
Detailed Description
The embodiments of the present invention will be described in further detail below. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
The invention discloses a method for separating a vacuum bag and an insulator by a vacuum circuit breaker, which has the following preferred specific implementation modes:
the method separates a vacuum bag from the interior of an insulator by utilizing a vertical processing machine tool, a special cutter, a clamp and a crowbar, and comprises the following steps:
A. vertically placing the insulator, wherein an upper flange of the insulator is symmetrically fixed by two sets of the clamps;
B. mounting and fixing the special cutter on a rotating shaft of the vertical processing machine tool, setting processing parameters, and aligning the center of the special cutter with the center of the inner hole of the insulator;
C. starting a vertical processing machine tool, vertically processing along the center of the inner hole of the insulator downwards at a set feed amount and a set rotating speed, and removing cured insulating glue filled between the insulator and the vacuum bag;
when the special cutter moves downwards for a certain distance, the processing is suspended, and the solidified insulating glue cutting scraps at the upper end part of the vacuum bag are cleaned and removed through the rectangular hole of the special cutter;
D. injecting cooling liquid along the circumferential gap between the special cutter and the insulator, and cooling for a period of time after injecting the cooling liquid for a period of time;
E. repeating the step C, D, and continuing to process until the lower edge of the special cutter is flush with the joint of the lower end part of the vacuum bag and the insulator, and stopping processing;
F. lifting the special cutter along the center of the inner hole of the insulator, lifting the vacuum bag and the solidified insulating glue cuttings wrapped on the circumferential surface of the vacuum bag together with the special cutter, and separating the vacuum bag from the inner hole of the insulator;
G. and the crowbar extends into the rectangular hole of the special cutter, the end part of the crowbar is propped against the upper end surface of the vacuum bag, a downward acting force is applied, and the vacuum bag is separated from the inside of the special cutter.
The special cutter comprises a cutter body in a cylindrical cup-shaped structure, the outer diameter D1 of the cutter body is smaller than the inner diameter D1 of the insulator hole, and the inner diameter D2 of the cutter body is larger than the outer diameter D2 of the vacuum bag (5).
The cutter body is annularly and uniformly distributed with rectangular holes and round holes, the upper part of the cutter body is provided with an upper end flange, the central position of the upper end flange is provided with a connecting rod, and the connecting rod is used for being connected with a rotating shaft of the vertical processing machine tool.
The method for separating the vacuum bag from the insulator of the vacuum circuit breaker successfully separates the vacuum bag from the interior of the insulator under the condition of not damaging the body structures of the insulator and the vacuum bag. The method is simple and reasonable, and reduces the maintenance cost of the vacuum circuit breaker.
In the specific application:
the vertical processing machine can be a drilling machine or a milling machine, and preferably adopts a radial vertical drilling machine.
The special cutter is of a cylindrical cup-shaped structure and is divided into a cutter body, an upper end flange and a connecting rod according to functions; a plurality of rectangular holes and circular holes are circumferentially and uniformly distributed on the cutter body, so that the aim of removing cutting scraps of the solidified insulating glue is fulfilled in the machining process; secondly, the cooling liquid can conveniently permeate into the inner side of the cutter through the rectangular hole and the round hole in the pause process, and the cutter can be fully cooled; thirdly, the dust collector can remove the cuttings on the flange at the upper end of the vacuum bag through the rectangular hole, and fourthly, the vacuum bag can be separated from the interior of the cutter through the rectangular hole by a crowbar. According to the distribution of rectangular hole and round hole, the cutter body can be divided into three regions I, II, III in length direction, I and III regional hoop equipartition a plurality of constant diameter round holes, II regions, preferably, 3 rectangular holes of hoop distribution are equipped with a plurality of constant diameter round holes again on the cutter body between two adjacent rectangular holes.
Under the precondition of ensuring the rigidity of the cutter, the outer diameter D1 of the special cutter is smaller than the diameter D1 of the inner hole of the insulator, the inner diameter D2 of the special cutter is larger than the outer diameter D2 of the vacuum bag, preferably, the diameters D1-D1 are controlled to be 2-4mm, and the diameters D2-D2 are controlled to be 2-6 mm; the height h of the cutter body is required to ensure that the cutter body has enough processing height when descending to the joint of the bottom end of the vacuum bag;
the special cutter connecting rod is fixed at the center of the flange at the upper end, and the appearance and the interface size of the connecting rod are designed to be consistent with those of a common cutter, so that the special cutter connecting rod is convenient to mount and dismount;
the clamp is a conventional clamp and can be composed of a pressing plate, a screw rod and a nut.
The specific embodiment, as shown in fig. 1 to 4:
firstly, vertically placing an insulator, and fixing an upper flange of the insulator by using a clamp plate in a bilateral symmetry manner;
secondly, mounting a special cutter on a Morse drill sleeve of the radial upright drill, setting the rotation parameter of the special cutter to be 32 revolutions per minute, setting the feed amount to be 0.1mm per revolution, and aligning the center of the special cutter with the center of an inner hole of the insulator;
thirdly, vertically processing the cured insulating glue downwards, pausing the processing when a special cutter descends for 10mm of depth, and cutting the cured insulating glue at the upper end part of the vacuum bag through a rectangular hole of the cutter body to clean and absorb;
fourthly, cooling liquid is injected along the gap between the special cutter and the inner hole of the insulator in the circumferential direction, and the insulator is cooled for about one minute after the injection is finished;
fifthly, repeating the third step and the fourth step to continue processing until the lower edge of the special cutter is flush with the joint of the lower end plane of the vacuum bag and the insulator, and stopping processing;
sixthly, lifting the special cutter along the center of the inner hole of the insulator, lifting the vacuum bag and the solidified insulating glue cutting chips wrapped on the circumferential surface of the vacuum bag along with the special cutter, and separating the vacuum bag from the inner hole of the insulator;
and seventhly, extending a crow bar into the special cutter from the rectangular hole, supporting the upper end face of the vacuum bag by using the end part, and applying downward acting force to separate the vacuum bag from the inside of the special cutter.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. A method for separating a vacuum bag from an insulator of a vacuum circuit breaker is characterized in that the method separates the vacuum bag (5) from the interior of the insulator (6) by utilizing a vertical processing machine tool (1), a special cutter (2), a clamp (3) and a crowbar (4), and comprises the following steps:
A. the insulator (6) is vertically placed, and an upper flange of the insulator (6) is symmetrically fixed by two sets of the clamps (3);
B. the special cutter (2) is fixedly arranged on a rotating shaft of the vertical processing machine tool (1), processing parameters are set, and then the center of the special cutter (2) is aligned with the center of an inner hole of the insulator (6);
C. starting a vertical processing machine tool (1), vertically processing along the center of an inner hole of the insulator (6) downwards at a set feed amount and a set rotating speed, and removing cured insulating glue filled between the insulator (6) and the vacuum bag (5);
when the special cutter (2) moves downwards for a certain distance, the processing is suspended, and solidified insulating glue cutting scraps at the upper end part of the vacuum bag (5) are cleaned and removed through a rectangular hole of the special cutter (2);
D. injecting cooling liquid along the annular gap between the special cutter (2) and the insulator (6), and cooling for a period of time after injecting the cooling liquid for a period of time;
E. the C, D step is repeated, the processing is continued until the lower edge of the special cutter (2) is flush with the joint of the lower end part of the vacuum bag (5) and the insulator (6), and the processing is stopped;
F. lifting the special cutter (2) along the center of the inner hole of the insulator (6), lifting the vacuum bag (5) and the solidified insulating glue cuttings wrapped on the circumferential surface of the vacuum bag together with the special cutter (2), and separating the vacuum bag (5) from the inner hole of the insulator (6);
G. the crowbar (4) extends into the rectangular hole of the special cutter (2), the end part of the crowbar is propped against the upper end surface of the vacuum bag (5), downward acting force is applied, and the vacuum bag (5) is separated from the inside of the special cutter (2);
the special cutter (2) comprises a cutter body in a cylindrical cup-shaped structure, the outer diameter D1 of the cutter body is smaller than the inner diameter D1 of the hole of the insulator (6), and the inner diameter D2 of the cutter body is larger than the outer diameter D2 of the vacuum bag (5).
2. The method for separating a vacuum bag from an insulator of a vacuum circuit breaker as claimed in claim 1, wherein the cutter body is circumferentially and uniformly provided with a rectangular hole and a round hole, the upper part of the cutter body is provided with an upper end flange, and the center of the upper end flange is provided with a connecting rod which is used for connecting with a rotating shaft of the vertical processing machine tool (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010004925.9A CN111129994B (en) | 2020-01-03 | 2020-01-03 | Method for separating vacuum package and insulator by vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010004925.9A CN111129994B (en) | 2020-01-03 | 2020-01-03 | Method for separating vacuum package and insulator by vacuum circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111129994A CN111129994A (en) | 2020-05-08 |
| CN111129994B true CN111129994B (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010004925.9A Active CN111129994B (en) | 2020-01-03 | 2020-01-03 | Method for separating vacuum package and insulator by vacuum circuit breaker |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06296310A (en) * | 1993-02-09 | 1994-10-21 | Fuji Electric Co Ltd | Guide rail of draw-out type electric apparatus |
| CN101877288A (en) * | 2010-04-16 | 2010-11-03 | 郑文秀 | Vacuum arc extinction terminal post for high-voltage vacuum breaker and preparation method thereof |
| CN104183416A (en) * | 2014-09-12 | 2014-12-03 | 安徽鑫龙电器股份有限公司 | Vacuum circuit breaker |
| CN206947243U (en) * | 2017-07-25 | 2018-01-30 | 天一同益电气股份有限公司 | A kind of vacuum circuit breaker for being easily installed dismounting |
| CN207183125U (en) * | 2017-08-24 | 2018-04-03 | 沈阳晨源电气有限公司 | A kind of unloading for vacuum interrupter takes device |
| CN108376630A (en) * | 2018-04-18 | 2018-08-07 | 安徽龙和电气科技有限公司 | A kind of vacuum circuit breaker that stability is high |
| CN208015194U (en) * | 2018-03-30 | 2018-10-26 | 兴安供电有限公司 | Vacuum circuit-breaker arc extinguishing chamber extracting tool |
-
2020
- 2020-01-03 CN CN202010004925.9A patent/CN111129994B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06296310A (en) * | 1993-02-09 | 1994-10-21 | Fuji Electric Co Ltd | Guide rail of draw-out type electric apparatus |
| CN101877288A (en) * | 2010-04-16 | 2010-11-03 | 郑文秀 | Vacuum arc extinction terminal post for high-voltage vacuum breaker and preparation method thereof |
| CN104183416A (en) * | 2014-09-12 | 2014-12-03 | 安徽鑫龙电器股份有限公司 | Vacuum circuit breaker |
| CN206947243U (en) * | 2017-07-25 | 2018-01-30 | 天一同益电气股份有限公司 | A kind of vacuum circuit breaker for being easily installed dismounting |
| CN207183125U (en) * | 2017-08-24 | 2018-04-03 | 沈阳晨源电气有限公司 | A kind of unloading for vacuum interrupter takes device |
| CN208015194U (en) * | 2018-03-30 | 2018-10-26 | 兴安供电有限公司 | Vacuum circuit-breaker arc extinguishing chamber extracting tool |
| CN108376630A (en) * | 2018-04-18 | 2018-08-07 | 安徽龙和电气科技有限公司 | A kind of vacuum circuit breaker that stability is high |
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| CN111129994A (en) | 2020-05-08 |
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