CN201369198Y - 220 kV integrally formed porcelain bushing - Google Patents
220 kV integrally formed porcelain bushing Download PDFInfo
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- CN201369198Y CN201369198Y CNU2009200636986U CN200920063698U CN201369198Y CN 201369198 Y CN201369198 Y CN 201369198Y CN U2009200636986 U CNU2009200636986 U CN U2009200636986U CN 200920063698 U CN200920063698 U CN 200920063698U CN 201369198 Y CN201369198 Y CN 201369198Y
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- wall thickness
- porcelain bushing
- drainage
- main body
- drying
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Abstract
The utility model relates to a 220 kV integrally formed porcelain bushing. When in design, the difference between the wall thickness of a hanging head part of the porcelain bushing and that of a main body part of the porcelain bushing is reduced and set to 30 to 50 mm, thereby solving the defect of cracked upper opening caused by big difference between the wall thicknesses in the original structure. Thus, the difference value between the wall thickness of the main body part of the porcelain bushing and that of the hanging head part of the porcelain bushing is greatly reduced. In the design, the thickest part of the hanging head part in the original structure is partially eliminated, thereby realizing the synchronous drainage and drying of the whole part at the top, the bottom, the interior and the exterior during the drying process, eliminating the inconsistency of the drying and drainage of the parts due to the huge difference in wall thickness, and eventually solving the defect of contraction cracks during the process of drying and drainage, namely the cracked upper opening, which is caused by the drainage resistance force generated by such inconsistency.
Description
Technical field
The utility model relates to a kind of 220kV integral molding porcelain bushing.
Background technology
At present, the 220kV global formation porcelain that manufacturer produces finds to exist a large amount of last schistostoma phenomenons in its dry body process; This defective fails to solve always, makes in such process of producing product qualification rate very low always, and loss due to spoiled work is big, has a strong impact on contractual delivery, and the economic benefit of product is extremely low.Last schistostoma defective be at product upper hoisting head end face along bore wall, from up to down extend and be longitudinal cracking, generally speaking, crack length 100～300mm does not wait, or more longer, crackle width 4～8mm, crack depth 20～50mm does not wait, and is in the majority with the product that endoporus is little.The last schistostoma defective loss 17.6% of common product.
The position of schistostoma is C position (shown in Figure 2) in the appearance, last schistostoma defective, mostly occur at the little product of internal diameter, because its radius of curvature of product that internal diameter is little is little, during its product blank drying process, the surface area of draining is also little, i.e. the unit are that draining is easily concentrated is also little, the resistance of water drainage that bears of unit are wants big like this, in other words.Also have, the drying of blank all is from top to bottom, by outer and internal drainage drying, therefore, the draining meeting on blank surfaces externally and internally and top is relative more concentrated more hurry up, and the resistance of water drainage at its this position is strengthened, because of the evaporative power of moisture content greater than the resistance of water drainage of blank, so the cracking at this position is very easy to take place.In addition, its topmost factor, or the wall thickness dimension that insulator hangs head position and insulator main body section differs greatly, and general subject's position wall thickness is between 40～50mm, and hanging head position wall thickness between 100～120mm, it is 60～70mm that the wall thickness dimension that promptly hangs head position and main body section differs.Like this, it is also inequality that as can be seen from Figure 2 this two parts center a point and the b moisture content of ordering is discharged the distance that moves to inner surface, a＞b, like this, under the same conditions, will make a point moisture content under the situation that b point moisture content has been discharged, not discharge yet, and the drying regime of the insulator blank of this moment upper end inner surface is basic identical, the resistance of water drainage of a point moisture content is very big, but rising along with baking temperature, the aggravation of the movement velocity of a point moisture content certainly will will break through stopping of its insulator inner surface to emit, and has just formed the situation of last schistostoma.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned defective, provides a kind of product percent of pass height to hang the thick head in head position and differs little a kind of 220kV integral molding porcelain bushing with the main body section gauge.
The technical solution of the utility model: to hang head position wall thickness and blank main body wall thickness variation in the original structure big and the defective of schistostoma occurs going up in order to solve, when design, insulator is hung head position wall thickness and insulator main body section wall thickness dimension differs little, thereby solved the defective of last schistostoma.A kind of 220kV integral molding porcelain bushing, the difference that it is characterized in that hanging at integral molding porcelain bushing head position wall thickness and insulator main body section wall thickness dimension is 30～50mm.Be that insulator hangs head position wall thickness L
1-insulator main body section wall thickness L
2=30～50mm.Make the difference of main body wall thickness and upper hoisting head position wall thickness dimension dwindle greatly like this, excised in design that insulator hangs the head position part at thick position in the original structure, make its whole position in dry run, can realize that inside and outside up and down draining synchronously is dry synchronously.Eliminated in the original structure because wall thickness variation is big, and made each position of blank produce the inconsistency of dry draining.And then finally solved because the contraction in the dry drainage procedure that resistance of water drainage caused that this inconsistency produces is split---cracking defect suitable for reading.
The technical solution of the utility model has solved the difference of a point moisture content and b point moisture content drainage path distance in the insulator original structure, makes it can realize that synchronous draining is dry synchronously.Eliminated because can not the dry synchronously cracking defect suitable for reading that is brought.Adopt technical scheme only to make on its insulator the loss of schistostoma defective and account for 0.74%, descend 16.86% than Ex ante.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of existing monolithic devices insulator;
Among the figure: the 1-insulator hangs the head position, 2-insulator main body section, and a-hangs center, head position, b-main body section center, the last schistostoma of c-position.
Embodiment
Referring to Fig. 2, a kind of 220kV integral molding porcelain bushing, the difference that it is characterized in that hanging at integral molding porcelain bushing head position 1 wall thickness and insulator main body section 2 wall thickness dimensions is 30～50mm.Be that insulator hangs head position 1 wall thickness L
1-insulator main body section 2 wall thickness L
2=30～50mm.Make the difference of main body section 2 wall thickness and upper hoisting head position 1 wall thickness dimension dwindle greatly like this, excised in design that insulator hangs the head position part at thick position in the original structure, make its whole position in dry run, can realize that inside and outside up and down draining synchronously is dry synchronously.Eliminated in the original structure because wall thickness variation is big, and made each position of blank produce the inconsistency of dry draining.And then finally solved because the contraction in the dry drainage procedure that resistance of water drainage caused that this inconsistency produces is split---cracking defect suitable for reading.
Claims (1)
1, a kind of 220KV integral molding porcelain bushing is characterized in that the difference that integral molding porcelain bushing hangs head position (1) wall thickness and insulator main body section (2) wall thickness dimension is 30～50mm, and promptly insulator hangs head position wall thickness L
1-insulator main body section wall thickness L
2=30～50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200636986U CN201369198Y (en) | 2009-03-19 | 2009-03-19 | 220 kV integrally formed porcelain bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200636986U CN201369198Y (en) | 2009-03-19 | 2009-03-19 | 220 kV integrally formed porcelain bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201369198Y true CN201369198Y (en) | 2009-12-23 |
Family
ID=41488089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200636986U Expired - Fee Related CN201369198Y (en) | 2009-03-19 | 2009-03-19 | 220 kV integrally formed porcelain bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201369198Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384659A (en) * | 2016-11-18 | 2017-02-08 | 保定天威互感器有限公司 | Current transformer with insulator outlet structure and manufacturing method thereof |
-
2009
- 2009-03-19 CN CNU2009200636986U patent/CN201369198Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384659A (en) * | 2016-11-18 | 2017-02-08 | 保定天威互感器有限公司 | Current transformer with insulator outlet structure and manufacturing method thereof |
| CN106384659B (en) * | 2016-11-18 | 2018-01-30 | 保定天威互感器有限公司 | A kind of insulator outlet structure current transformer and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LILING HUAXIN PORCELAIN INSULATOR + ELECTRIC APPAR Free format text: FORMER NAME: LILING HUAXIN ELECTRIC PORCELAIN AND ELECTRICAL APPARATUS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 412208 three steps village, Pukou Town, Hunan, Liling Patentee after: Liling Huaxin Insulator Technology Co., Ltd. Address before: 412208 three steps village, Pukou Town, Hunan, Liling Patentee before: Liling Huaxin Porcelain Insulator & Electric Apparatus Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091223 Termination date: 20170319 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |