CN111933368A - Production process of annular grading ring - Google Patents
Production process of annular grading ring Download PDFInfo
- Publication number
- CN111933368A CN111933368A CN202010796171.5A CN202010796171A CN111933368A CN 111933368 A CN111933368 A CN 111933368A CN 202010796171 A CN202010796171 A CN 202010796171A CN 111933368 A CN111933368 A CN 111933368A
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- Prior art keywords
- grading ring
- center
- ring
- annular
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/28—Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
A production process of an annular grading ring. Relates to a production process of an annular grading ring, in particular to improvement of a grading ring detection mode. The production process of the annular grading ring capable of detecting the flatness degree of the grading ring circular ring is provided. The production process of the annular grading ring comprises a casting forming step, an assembling and fixedly connecting step, a polishing step and a center calibrating step, wherein the center calibrating step is added in the original production process, grading rings with insufficiently smooth outer edges are selected out, the flatness of each factory-delivered grading ring is guaranteed to meet the requirement, the center of each grading ring is located in the center of an excircle, the grading ring is guaranteed to be not prone to causing breakdown of devices when sudden change occurs in voltage when the grading ring is used, and the overall reliability of equipment is remarkably improved.
Description
Technical Field
The invention relates to a production process of an annular grading ring, in particular to improvement of a grading ring detection mode.
Background
The grading ring is one of important devices on high-voltage equipment, is a circular ring-shaped component for improving voltage distribution on an insulator, mainly has the function of grading, is suitable for alternating current in a voltage form, can uniformly distribute high voltage around an object, and ensures that no potential difference exists between every two annular parts, thereby achieving the effect of grading.
The patent number ZL 201910292905.3 patent application disclosed by the national intellectual property office 2019.07.12 discloses an annular grading ring body, wherein the grading ring body is made of semiconductor materials, an aluminum ring is coaxially arranged outside the grading ring body, a plurality of connecting rods are uniformly distributed in an annular space between the grading ring body and the aluminum ring, and extension lines of the connecting rods pass through the circle centers of the grading ring body and the aluminum ring. Due to the use of the semiconductor material, the produced grading ring has an electric field inside under ultrahigh and ultrahigh voltage, so that the potential difference problem is fundamentally avoided, and the grading ring is not easy to cause device breakdown when the voltage is suddenly changed, so that the integral reliability of the equipment is obviously improved. However, in practical use, the problem of processing precision is found that the grading ring has certain deformation after being produced, so that the performance of the grading ring is affected, and the reliability of the grading ring is reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a production process of an annular grading ring, which can detect the flatness degree of a grading ring circular ring.
The invention is realized by adopting the following technical scheme: the production process of the annular grading ring comprises the following steps:
a casting molding step, namely, hot-pressing and molding the raw materials after proportioning to obtain a pair of semi-rings;
splicing and fixedly connecting, namely splicing the pair of semi-rings to obtain a complete rough blank of the grading ring;
a grinding and polishing step, namely grinding and polishing the surface of the grading ring, performing surface treatment and removing surface burrs;
and a center calibration step, namely sleeving the equalizing ring on the correction device to perform center calibration, and finishing.
The correcting device comprises a center post, the equalizing ring is sleeved on the center post, the center post is hinged with a plurality of clamping jaws, the clamping jaws are linked, and when one clamping jaw faces the center post, the residual clamping jaws synchronously rotate towards the center post.
The center calibration step includes:
sleeving, namely sleeving the center of the grading ring on the central column;
and a detection step, namely pushing one clamping jaw to be attached to the surface of the grading ring, if the circumference of the grading ring is uniform, all the clamping jaws are attached to the surface of the grading ring, and if the circumference of the grading ring is non-uniform, at least one clamping jaw and a gap are formed between the surfaces of the grading ring, and the operation is finished.
Adjacent articulated between the clamping jaw have the gangbar, the gangbar is the loop bar structure, adjacent clamping jaw is connected to the both ends one-to-one of loop bar structure.
Compared with the prior art, the method has the advantages that a center calibration step is added in the original production process, the equalizing rings with the outer edges not smooth enough are selected, the flatness degree of each factory equalizing ring is guaranteed to meet the requirement, the center of each equalizing ring is located in the circle center of an excircle, the equalizing rings are guaranteed not to be prone to device breakdown when voltage changes suddenly when the equalizing rings are used, and the integral reliability of equipment is remarkably improved.
Detailed Description
The present invention is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.
The production process of the annular grading ring comprises the following steps:
a casting molding step, namely, hot-pressing and molding the raw materials after proportioning to obtain a pair of semi-rings;
splicing and fixedly connecting, namely splicing the pair of semi-rings to obtain a complete rough blank of the grading ring;
a grinding and polishing step, namely grinding and polishing the surface of the grading ring, performing surface treatment and removing surface burrs;
and a center calibration step, namely sleeving the equalizing ring on the correction device to perform center calibration, and finishing.
The method has the advantages that a center calibration step is added in the original production process, the equalizing rings with the outer edges not smooth enough are selected, the flatness degree of each factory-leaving equalizing ring is guaranteed to meet requirements, the center of each equalizing ring is located in the circle center of an excircle, the equalizing rings are guaranteed to be not prone to causing breakdown of devices when sudden change occurs in voltage when in use, and the overall reliability of equipment is remarkably improved.
The correcting device comprises a center post, the equalizing ring is sleeved on the center post, the center post is hinged with a plurality of clamping jaws, the clamping jaws are linked, and when one clamping jaw faces the center post, the residual clamping jaws synchronously rotate towards the center post. The center calibration step includes: and a sleeving step, namely sleeving the center of the grading ring on the central column. And a detection step, namely pushing one clamping jaw to be attached to the surface of the grading ring, if the circumference of the grading ring is uniform, all the clamping jaws are attached to the surface of the grading ring, and if the circumference of the grading ring is non-uniform, at least one clamping jaw and a gap are formed between the surfaces of the grading ring, and the operation is finished. The grading rings with the outer edges not smooth enough are selected, the grading ring leaving the factory is guaranteed to be smooth enough, the center of the grading ring is located in the circle center of the excircle, the grading ring is guaranteed to be not prone to device breakdown when sudden change occurs in voltage when the grading ring is used, and the overall reliability of the equipment is remarkably improved.
Adjacent articulated between the clamping jaw have the gangbar, the gangbar is the loop bar structure, adjacent clamping jaw is connected to the both ends one-to-one of loop bar structure.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (4)
1. The production process of the annular grading ring is characterized by comprising the following steps: the method comprises the following steps:
a casting molding step, namely, hot-pressing and molding the raw materials after proportioning to obtain a pair of semi-rings;
splicing and fixedly connecting, namely splicing the pair of semi-rings to obtain a complete rough blank of the grading ring;
a grinding and polishing step, namely grinding and polishing the surface of the grading ring, performing surface treatment and removing surface burrs;
and a center calibration step, namely sleeving the equalizing ring on the correction device to perform center calibration, and finishing.
2. The process for producing an annular grading ring according to claim 1, wherein: the correcting device comprises a center post, the equalizing ring is sleeved on the center post, the center post is hinged with a plurality of clamping jaws, the clamping jaws are linked, and when one clamping jaw faces the center post, the residual clamping jaws synchronously rotate towards the center post.
3. The process for producing an annular grading ring according to claim 2, characterized in that: the center calibration step includes:
sleeving, namely sleeving the center of the grading ring on the central column;
and a detection step, namely pushing one clamping jaw to be attached to the surface of the grading ring, if the circumference of the grading ring is uniform, all the clamping jaws are attached to the surface of the grading ring, and if the circumference of the grading ring is non-uniform, at least one clamping jaw and a gap are formed between the surfaces of the grading ring, and the operation is finished.
4. The process for producing an annular grading ring according to claim 2, characterized in that: adjacent articulated between the clamping jaw have the gangbar, the gangbar is the loop bar structure, adjacent clamping jaw is connected to the both ends one-to-one of loop bar structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010796171.5A CN111933368B (en) | 2020-08-10 | 2020-08-10 | Production process of annular grading ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010796171.5A CN111933368B (en) | 2020-08-10 | 2020-08-10 | Production process of annular grading ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111933368A true CN111933368A (en) | 2020-11-13 |
| CN111933368B CN111933368B (en) | 2022-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010796171.5A Active CN111933368B (en) | 2020-08-10 | 2020-08-10 | Production process of annular grading ring |
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| CN (1) | CN111933368B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4422653A (en) * | 1982-04-16 | 1983-12-27 | Sheffer Collet Company | Chuck for tubular workpieces |
| CN104440399A (en) * | 2014-11-21 | 2015-03-25 | 常州腾奇电器有限公司 | Flatness and roundness detection tool |
| CN207907793U (en) * | 2018-01-19 | 2018-09-25 | 无锡市佳安机电制造有限公司 | A kind of power Transmission grading ring installation end face calibrating installation |
| CN109696138A (en) * | 2019-03-01 | 2019-04-30 | 中国计量大学 | Cylindricity detection device and its eccentric calibration method |
| CN109940474A (en) * | 2019-04-10 | 2019-06-28 | 扬州洪顺电器有限公司 | A kind of grading ring surface grinding machine device |
| CN109943015A (en) * | 2019-04-12 | 2019-06-28 | 平顶山正植科技有限公司 | Super extra-high voltage grading ring semiconductor material and grading ring production technology |
-
2020
- 2020-08-10 CN CN202010796171.5A patent/CN111933368B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4422653A (en) * | 1982-04-16 | 1983-12-27 | Sheffer Collet Company | Chuck for tubular workpieces |
| CN104440399A (en) * | 2014-11-21 | 2015-03-25 | 常州腾奇电器有限公司 | Flatness and roundness detection tool |
| CN207907793U (en) * | 2018-01-19 | 2018-09-25 | 无锡市佳安机电制造有限公司 | A kind of power Transmission grading ring installation end face calibrating installation |
| CN109696138A (en) * | 2019-03-01 | 2019-04-30 | 中国计量大学 | Cylindricity detection device and its eccentric calibration method |
| CN109940474A (en) * | 2019-04-10 | 2019-06-28 | 扬州洪顺电器有限公司 | A kind of grading ring surface grinding machine device |
| CN109943015A (en) * | 2019-04-12 | 2019-06-28 | 平顶山正植科技有限公司 | Super extra-high voltage grading ring semiconductor material and grading ring production technology |
Non-Patent Citations (1)
| Title |
|---|
| 朱海涛等: "750kV输电线路复合绝缘子用对接式均压环的研制", 《电网与水力发电进展》 * |
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| CN111933368B (en) | 2022-01-07 |
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