CN202996430U - Gluing structure for insulator and flange - Google Patents
Gluing structure for insulator and flange Download PDFInfo
- Publication number
- CN202996430U CN202996430U CN 201220592920 CN201220592920U CN202996430U CN 202996430 U CN202996430 U CN 202996430U CN 201220592920 CN201220592920 CN 201220592920 CN 201220592920 U CN201220592920 U CN 201220592920U CN 202996430 U CN202996430 U CN 202996430U
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- Prior art keywords
- flange
- insulator
- face
- mucilage binding
- gluing
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Abstract
The utility model relates to a gluing structure for an insulator and a flange; the flange is bonded with the insulator by binder; the outer cylindrical surface of the bottom part of the insulator bonded with the flange is a smooth cylindrical surface; a sealing ring is arranged between the smooth cylindrical surface and the flange; the lower end face of the insulator is 0.3-3mm higher than the lower end face of the flange. The outer cylindrical surface of the bottom part of the insulator bonded with the flange is machined to be the smooth cylinder surface, the surface bears stress when being pressed, and thus the even stress of the a seal surface of the insulator can be ensured; in addition, because a certain height difference is existent between the end face of the insulator and the end face of the flange during gluing, even the flange is in contact with an equipment box cover flange during an installation process, the lower end face of the insulator is located at a suspended state and does not contact the end face of the equipment box cover flange, the root part of the insulator is protected from cracking during the gluing process, and the total bending strength of a product after gluing is greatly improved.
Description
Technical field
The utility model relates to a kind of mucilage binding structure of insulator, relates in particular to the mucilage binding structure of insulator and flange.
Background technology
Along with the high speed development of power construction, system voltage requires more and more higher, and it is also more and more stricter that its reliability of operation requires.The application of hollow insulator aspect the high voltage electric equipments such as switch, instrument transformer and sleeve pipe in recent years is also more and more extensive, guarantees that wherein the sealing reliability of dielectric is very crucial.
At present, in industry, the mucilage binding structure to hollow insulator is divided into two kinds:
Fig. 1 and Fig. 2 are a kind of built-in mucilage binding structure, flange 4 and insulator 1 contact site design rectangular channel, give precompression F1 between insulator 1 and flange 4 during mucilage binding, the first sealing ring 6 in rectangular channel is compressed, pour into adhesive 2 in the gap afterwards between flange 4 and insulator 1, after adhesive 2 solidifies, remove precompression F1, be connected by securing member between flange 4 and equipment case lid flange 5, in order to guarantee the sealing between flange 4 and equipment case lid flange 5, on equipment case lid flange 5, rectangular channel is set, the second sealing ring 7 is set in rectangular channel.This structure is present the most frequently used a kind of sealing means, and mainly there is following problem in it:
1, flange and insulator belong to hard at the sealing surface position and contact, product in use is subject to outside traction, can be in insulator C point or shearing force of D point place circumference generation, because epoxy or electroceramics belong to fragile material, hard contact very easily causes C point or D point cracking first to occur, Local Cracking can be delivered to stress rapidly stress point flange root, thereby causes the whole root of insulator cracking to occur, fracture even occurs.Therefore, this structure is under the prerequisite that guarantees sealing, and its main Mechanical bending strength is difficult to be improved.
2, coordinating between sealing ring and seal groove has relatively high expectations, and the sealed groove of the compression ratio of seal strictly limits, and after use after a while, if the seal elastic failure very easily causes seepage, and can't change the inefficacy seal.
3, the seal between flange and insulator is in inside, can't observe compression effectiveness, and because the effect of temporary transient obstruction is played in the existence meeting of adhesive to tiny seepage, therefore when product export was checked, the leak detection of short time is the representative products overall sealing performance accurately.
4, complicated operation not only will guarantee insulator and the flange upper and lower end face depth of parallelism during mucilage binding, simultaneously, also need strictly to control precompression.
Problem for above existence, a kind of improvement structure (as shown in Figure 3) has appearred in industry, the root at insulator 8 and flange 9 applying positions is all processed angle, at triangular groove of insulator 8 and flange 9 bottoms formation, place the 3rd O RunddichtringO 11 during installation in groove, when insulator 8 was connected with flange 9, the 2nd O RunddichtringO 11 was effectively compressed by the triangle space of skewed slot and the 10 planes formation of equipment case lid flange, to reach positiver sealing.This mode is conducive to hold installs front and back seal compression situation, and can change after the 2nd O RunddichtringO 11 lost efficacy, and actual installation is also fairly simple, and overall performance is better than Fig. 2 structure, but still has following problem:
1, flange very easily contacts with equipment case lid flange firmly with insulator sealing surface position E point under stressed state; In addition, the place is stressed excessive due to angle, also can cause delamination splitting for the fiber glass epoxy insulating cylinder of multilayer, finally can cause the root cracking of similar Fig. 2, and its integral bending does not effectively improve.
2, this mode coordinates with insulator cementing etc. the size on flange and inclined-plane, insulator triangular slot position and flange and requires very strictly, in case dimension overproof, mucilage binding coordinate the bad reliability that all can affect sealing, this has just increased production difficulty greatly.
The utility model content
The utility model has overcome deficiency of the prior art, provides a kind of insulator root of avoiding cracking and the mucilage binding structure of the insulator that after its mucilage binding, mechanical bending strength is greatly improved and flange to occur in the mucilage binding process.
The utility model is realized by following scheme:
The mucilage binding structure of a kind of insulator and flange, flange is by adhesive and insulator bonding, with the external cylindrical surface of the bonding insulator of flange bottom be the smooth face of cylinder, be provided with sealing ring between the smooth face of cylinder and flange, the lower surface of insulator is than the high 0.3-3mm in the lower surface of flange.
As improvement, flange is provided with seal groove in the junction, the smooth face of cylinder bottom insulator, and sealing ring is positioned at seal groove.
As improvement, seal groove is the rectangular seal groove.
As improvement, this mucilage binding structure also comprises the equipment case lid flange that is arranged on the flange lower surface.
The utility model will be processed into the smooth face of cylinder with the external cylindrical surface of the bonding insulator of flange bottom, and during pressurized, the face of cylinder is stressed, can guarantee that like this insulator sealing surface is stressed evenly; In addition, during due to mucilage binding, there are certain difference in height in insulator end face and end face of flange, even in installation process, flange contacts with equipment case lid flange, the insulator lower surface still is in vacant state, the end face that can not produce Fig. 2, two kinds of structures of Fig. 3 contacts firmly, has avoided the insulator root cracking to occur in gluey process, and the integral bending after the product mucilage binding is greatly improved.
Description of drawings
Fig. 1 is the mucilage binding structural representation of insulator of the prior art and flange;
Fig. 2 is the enlarged drawing of A section in Fig. 1;
Fig. 3 is the mucilage binding structure scheme of installation of insulator and flange in Fig. 2;
Fig. 4 is the mucilage binding structure scheme of installation of insulator after improving and flange;
Fig. 5 is the mucilage binding structure scheme of installation of insulator of the present utility model and flange.
Embodiment
Further illustrate the utility model below in conjunction with accompanying drawing.
Referring to Fig. 4, flange 13 is bonding by adhesive and insulator 12, be processed into the smooth face of cylinder with the external cylindrical surface (F sign place) of flange 13 bonding insulator 12 bottoms, flange 13 is provided with seal groove in the junction, the smooth face of cylinder with insulator 12 bottoms, described seal groove is rectangular channel, sealing ring 15 is positioned at seal groove, sealing ring 15 is the O RunddichtringO, during installation, flange 13 is inserted in the root of insulator 12, and the lower surface of controlling insulator 12 exceeds flange lower surface 0.3-3mm, by adhesive with flange 13 and insulator 12 mucilage bindings together.
O grommet type seal circle is arranged in the rectangular seal groove of insulator 12 and flange 13 formation, and the inner surface of O grommet type seal circle and the smooth Cylindrical Surfaces Contact of insulator 12, the upper and lower sides of outer surface contact with equipment case lid flange 14 with flange 13 respectively.When flange 13 being connected with equipment case lid flange when connecting with securing member, described securing member can be bolt, the O RunddichtringO will be subject to the extruding force that flange 13, equipment case lid flange 14 and insulator 12 faces of cylinder give, this moment, the O RunddichtringO can pack tightly the smooth face of cylinder of insulator 12, and the lower surface of the lower surface of insulator 12 and flange 13 still keeps at a distance and is the gap of y, and the y value is 0.3-3mm.Actual showing, the sealing mode can tolerate the air pressure of 0.8MPa under the stress of 3000N non-leakage.
Claims (4)
1. the mucilage binding structure of an insulator and flange, flange is by adhesive and insulator bonding, it is characterized in that the external cylindrical surface with the bonding insulator of flange bottom is the smooth face of cylinder, be provided with sealing ring between the smooth face of cylinder and flange, the lower surface of insulator is than the high 0.3-3mm in the lower surface of flange.
2. the mucilage binding structure of insulator according to claim 1 and flange, is characterized in that flange is provided with seal groove in the junction, the smooth face of cylinder bottom insulator, and sealing ring is positioned at seal groove.
3. the mucilage binding structure of insulator according to claim 2 and flange, is characterized in that described seal groove is the rectangular seal groove.
4. the mucilage binding structure of the described insulator of arbitrary claim of according to claim 1 to 3 and flange, characterized by further comprising the equipment case lid flange that is arranged on the flange lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220592920 CN202996430U (en) | 2012-11-12 | 2012-11-12 | Gluing structure for insulator and flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220592920 CN202996430U (en) | 2012-11-12 | 2012-11-12 | Gluing structure for insulator and flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202996430U true CN202996430U (en) | 2013-06-12 |
Family
ID=48567576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220592920 Expired - Fee Related CN202996430U (en) | 2012-11-12 | 2012-11-12 | Gluing structure for insulator and flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202996430U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108247285A (en) * | 2017-12-12 | 2018-07-06 | 武汉重工铸锻有限责任公司 | A kind of pressure test cylinder sealing surface anticorrosion treatment technology |
-
2012
- 2012-11-12 CN CN 201220592920 patent/CN202996430U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108247285A (en) * | 2017-12-12 | 2018-07-06 | 武汉重工铸锻有限责任公司 | A kind of pressure test cylinder sealing surface anticorrosion treatment technology |
| CN108247285B (en) * | 2017-12-12 | 2019-09-17 | 武汉重工铸锻有限责任公司 | A kind of pressure test cylinder sealing surface anticorrosion treatment technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20181112 |