CN101290825B - Hollow composite insulator and method of producing the same - Google Patents
Hollow composite insulator and method of producing the same Download PDFInfo
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- CN101290825B CN101290825B CN2008100309912A CN200810030991A CN101290825B CN 101290825 B CN101290825 B CN 101290825B CN 2008100309912 A CN2008100309912 A CN 2008100309912A CN 200810030991 A CN200810030991 A CN 200810030991A CN 101290825 B CN101290825 B CN 101290825B
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- umbrella cover
- silicon rubber
- overlap joint
- joint ring
- leading portion
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Abstract
The invention relates to a hollow composite insulator and a method for producing the same. The hollow composite insulator consists of an insulating mandrel inner cylinder, an end flange and a silicon rubber shed, wherein, the silicon rubber shed is formed by connecting more than two silicon rubber shed sections, a connecting structure between the two adjacent silicon rubber sheds is of a step type lapping structure, namely the tail end of one shed section processed at the previous time is a step-type front section lapping ring with the outer diameter less than that of the shed section, the front section lapping ring is coated with adhesive, a front section of one shed segment processed at the next time is a rear section lapping ring with the inner diameter matched with the lapping ring, and the front section lapping ring and the rear section lapping ring are bonded and connected by the adhesive. The lapping structure of the hollow composite insulator increases lapping bonding area and strengthens connecting strength between the two sheds when the silicon rubber sheds bear an axial tensile force, the phenomena of stretch-thinning and ripping produced due to the shrinkage of silicon rubber are greatly decreased, thereby guaranteeing the electrical performance of the hollow composite insulator and prolonging the service life of the hollow composite insulator.
Description
Technical field
The present invention relates to a kind of high-tension power transmission and transformation equipment and production method thereof, particularly a kind of hollow combined insulator and production method thereof.
Background technology
Hollow combined insulator just progressively replaces traditional porcelain insulator and glass insulator with its superior electric property and mechanical performance.Particularly in superhigh pressure, extra-high voltage electric transmission and transformation equipment, the superior function of hollow combined insulator is embodied more.Composite insulator is made up of three parts of connection gold utensil at insulation mandrel, silicon rubber umbrella cover and two ends.Silicon rubber is the insulating material of superior performance, plays the external insulation effect by its umbrella cover of making.Most high pressure, whole product of superhigh pressure composite insulator is long, umbrella number of sheets amount is many, and the silicon rubber umbrella cover need adopt multiple injection rubber vulcanization moulding in mould, connect and be made successively in process of production.At present, for the composite insulator of moulding repeatedly, the joint of front and back two mould silicon rubber umbrella cover seam crossings adopts the syndeton of radially section butt joint or inclined-plane butt joint, that is: the afterbody of the umbrella cover that preceding shot sulfuration is finished is repaired smooth as connecting portion, form faying surface, brushing adhesive on faying surface is then injected sizing material again, forms next mould umbrella cover, connect successively then, up to making whole product.Because the thickness of umbrella cover is thinner usually, therefore, the silicon rubber umbrella cover of the composite insulator of this structure connects the umbrella position and has just become the insulation weak link, in use because of reasons such as climate changes, because of shrinking its faying surface that connects the umbrella position, silicon rubber to be subjected to axial tension inevitably, be easy to occur phenomenon thin by drawing, drawing crack, have a strong impact on the electric property and the useful life of composite insulator, even may directly cause product rejection, cause security incident, be the major hidden danger of high pressure, ehv power transmission equipment.
Summary of the invention
The purpose of this invention is to provide a kind of hollow combined insulator, it connects umbrella structural reliability height, good electric property, long service life.
Another object of the present invention provides a kind of hollow combined insulator production method, and it can make the hollow combined insulator of being produced reach above-mentioned effect, and has advantage of simple technology.
Technical scheme of the present invention is:
A kind of hollow combined insulator, by the insulation mandrel inner core, the termination flange, the silicon rubber umbrella cover is formed, described silicon rubber umbrella cover is by more than two, injection molding successively silicon rubber umbrella cover section is formed by connecting, it is characterized in that: the syndeton between the described adjacent two silicon rubber umbrella cover sections is the step bridging arrangement, the afterbody of the umbrella cover section that promptly before processes at one time is the step leading portion overlap joint ring of overall diameter less than umbrella cover section overall diameter, be coated with adhesive on the leading portion overlap joint ring, the leading portion of the umbrella cover section that processes at one time after described is that interior diameter encircles with the back segment overlap joint that the overlap joint ring is complementary, and described leading portion overlap joint ring is connected by the adhesive bonding with back segment overlap joint ring.
As to further improvement of the present invention, the wall thickness that described leading portion overlap joint ring and back segment overlap joint encircle is 1/2 of silicon rubber umbrella cover wall thickness.
As to further improvement of the present invention, the length that described leading portion overlap joint ring and back segment overlap joint encircle all is not less than 10～15mm.
A kind of production method of hollow combined insulator, the silicon rubber umbrella cover is formed by connecting by the silicon rubber umbrella cover section more than two, described silicon rubber umbrella cover is to begin the sulfuration of segmentation injection moulding successively from plug inner core one end that insulate to form in die cavity, it is characterized in that: the umbrella cover The initial segment is finished in first injection moulding, umbrella cover The initial segment afterbody is processed as the step leading portion overlap joint ring of overall diameter less than umbrella cover section overall diameter, on leading portion overlap joint ring, be coated with adhesive, next section of injection moulding silicon rubber umbrella cover section once more, the leading portion that makes the umbrella cover section that injection moulding the finishes back segment overlap joint ring that to be interior diameter be complementary with the overlap joint ring, described leading portion overlap joint ring is binded by adhesive with back segment overlap joint ring and connects, afterbody with completed silicon rubber umbrella cover section is processed into step leading portion overlap joint ring again, repeat aforesaid operations, machine until whole silicon rubber umbrella cover.
The invention has the beneficial effects as follows:
Because bridging arrangement of the present invention is a step overlap joint ring, its faying surface is a cascaded surface, existing radial engagement face, the axial engagement face that certain-length is arranged again, increased the overlap joint bond area, when the silicon rubber umbrella cover bears axial tension, connecing the umbrella position not only in radial engagement face formation axial tension, also form axial shearing force at the axial engagement face, thereby strengthened the bonding strength between the two mould umbrella covers, because of shrinking to produce to draw to approach with the drawing crack phenomenon, reduces greatly by silicon rubber, thereby ensured the electric property of hollow combined insulator, prolonged its useful life, eliminated the potential safety hazard in the hollow combined insulator use, avoid the security incident that causes therefrom, ensured high pressure, the safe operation of ehv power transmission equipment.
Because directly sulfuration in die cavity, connection of each umbrella cover section in the production method of the present invention, can guarantee the umbrella cover size conforms required standard made, can make the wall thickness of seam crossing reach the requirement of regulation, satisfy its conventional requirement, do not increase production cost, save operating procedure.
Description of drawings
The invention will be further described below in conjunction with the embodiment accompanying drawing.
Fig. 1 is hollow combined insulator overall structure figure of the present invention;
Fig. 2 is that prior art hollow core composite insulator radial overlap is in the face of access node structure schematic diagram;
Fig. 3 is a prior art hollow core composite insulator inclined-plane faying surface docking structure schematic diagram;
Fig. 4 is a hollow combined insulator faying surface structural representation of the present invention.
Among the figure: 1, fiberglass inner core; 2, termination flange; 3, silicon rubber umbrella cover; 4, leading portion overlap joint ring; 5 adhesives; 6, back segment overlap joint ring.
Embodiment
Embodiment 1:
As Fig. 2, shown in Figure 3, in the prior art general adopt radial overlap in the face of access node structure and inclined-plane to overlap joint access node structure, the umbrella position that connects that is about to the umbrella cover of a preceding injection moulding repairs to become to face directly or the inclined-plane, face directly or the inclined-plane on the brushing adhesive, directly follow injection moulding silicon rubber again, form next mould umbrella cover, connect successively, up to making whole product.
As Fig. 1, shown in 4, the present invention is by the insulation mandrel inner core 1 of fiberglass material, aluminium matter termination flange 2, silicon rubber umbrella cover 3 is formed, silicon rubber umbrella cover 3 is by more than two, the silicon rubber umbrella cover section of injection mo(u)lding is formed by connecting successively, syndeton between the two adjacent silicon rubber umbrella cover sections is the step bridging arrangement, the afterbody that is the umbrella cover section finished of a preceding injection moulding is the step leading portion overlap joint ring 4 of overall diameter less than umbrella cover section overall diameter, be coated with adhesive 5 on the leading portion overlap joint ring 4, the leading portion of the umbrella cover section that the injection moulding in back the is finished back segments overlap joint ring 6 that to be interior diameter be complementary with overlap joint ring 4, leading portion overlap joint ring 4 is connected by adhesive 5 bondings with back segment overlap joint ring 6.The wall thickness of leading portion overlap joint ring 4 and back segment overlap joint ring 6 is 1/2 of silicon rubber umbrella cover 3 wall thickness.The length of leading portion overlap joint ring 4 and back segment overlap joint ring 6 is 10mm.
A kind of production method of hollow combined insulator, silicon rubber umbrella cover 3 is formed by connecting by the silicon rubber umbrella cover section more than two, the silicon rubber umbrella cover is to begin from plug inner core 1 one ends that insulate that step up cure is injection molded successively in die cavity, the umbrella cover The initial segment is finished in injection sulfuration earlier, umbrella cover The initial segment afterbody is processed as the step leading portion overlap joint ring 4 of overall diameter less than umbrella cover section overall diameter, on leading portion overlap joint ring 4, be coated with adhesive 5, next section of injection moulding silicon rubber umbrella cover section once more, making the leading portion of injecting the umbrella cover section of finishing is that interior diameter encircles 6 with the back segments overlap joint that overlap joint ring 4 is complementary, leading portion overlap joint ring 4 is binded by adhesive 5 with back segment overlap joint ring 6 and connects, afterbody with completed silicon rubber umbrella cover section is processed into step leading portion overlap joint ring 4 again, repeat aforesaid operations, machine until whole silicon rubber umbrella cover.
Embodiment 2:
As Fig. 2, shown in Figure 3, in the prior art general adopt radial overlap in the face of access node structure and inclined-plane to overlap joint access node structure, the umbrella position that connects that is about to the umbrella cover of a preceding injection moulding repairs to become to face directly or the inclined-plane, face directly or the inclined-plane on the brushing adhesive, directly follow injection moulding silicon rubber again, form next mould umbrella cover, connect successively, up to making whole product.
As Fig. 1, shown in 4, the present invention is by the insulation mandrel inner core 1 of fiberglass material, aluminium matter termination flange 2, silicon rubber umbrella cover 3 is formed, silicon rubber umbrella cover 3 is by more than two, the silicon rubber umbrella cover section of injection mo(u)lding is formed by connecting successively, syndeton between the two adjacent silicon rubber umbrella cover sections is the step bridging arrangement, the afterbody that is the umbrella cover section finished of a preceding injection moulding is the step leading portion overlap joint ring 4 of overall diameter less than umbrella cover section overall diameter, be coated with adhesive 5 on the leading portion overlap joint ring 4, the leading portion of the umbrella cover section that the injection moulding in back the is finished back segments overlap joint ring 6 that to be interior diameter be complementary with overlap joint ring 4, leading portion overlap joint ring 4 is connected by adhesive 5 bondings with back segment overlap joint ring 6.The wall thickness of leading portion overlap joint ring 4 and back segment overlap joint ring 6 is 1/2 of silicon rubber umbrella cover 3 wall thickness.The length of leading portion overlap joint ring 4 and back segment overlap joint ring 6 is 15mm.
A kind of production method of hollow combined insulator, silicon rubber umbrella cover 3 is formed by connecting by the silicon rubber umbrella cover section more than two, the silicon rubber umbrella cover is to begin from plug inner core 1 one ends that insulate that step up cure is injection molded successively in die cavity, the umbrella cover The initial segment is finished in injection sulfuration earlier, umbrella cover The initial segment afterbody is processed as the step leading portion overlap joint ring 4 of overall diameter less than umbrella cover section overall diameter, on leading portion overlap joint ring 4, be coated with adhesive 5, next section of injection moulding silicon rubber umbrella cover section once more, making the leading portion of injecting the umbrella cover section of finishing is that interior diameter encircles 6 with the back segments overlap joint that overlap joint ring 4 is complementary, leading portion overlap joint ring 4 is binded by adhesive 5 with back segment overlap joint ring 6 and connects, afterbody with completed silicon rubber umbrella cover section is processed into step leading portion overlap joint ring 4 again, repeat aforesaid operations, machine until whole silicon rubber umbrella cover.
The present invention is including but not limited to above-mentioned execution mode, as long as adopted faying surface between each umbrella cover to comprise the version of axial faying surface, promptly belongs to protection scope of the present invention.
Claims (4)
1. high pressure, the defeated change of superhigh pressure used hollow combined insulator, by insulation mandrel inner core (1), termination flange (2), silicon rubber umbrella cover (3) is formed, described silicon rubber umbrella cover (3) is by more than two, the silicon rubber umbrella cover section of machine-shaping is formed by connecting successively, it is characterized in that: described more than two, syndeton between the adjacent silicon rubber umbrella cover section of the silicon rubber umbrella cover section of machine-shaping is the step bridging arrangement successively, the afterbody of the umbrella cover section that promptly before processes at one time is the step leading portion overlap joint ring (4) of overall diameter less than umbrella cover section overall diameter, be coated with adhesive (5) on the leading portion overlap joint ring (4), after the leading portion of the umbrella cover section that the processes at one time back segment overlap joint ring (6) that to be interior diameter be complementary with overlap joint ring (4), described leading portion overlap joint ring (4) is connected by adhesive (5) bonding with back segment overlap joint ring (6).
2. a kind of high pressure according to claim 1, the defeated change of superhigh pressure are used hollow combined insulator, it is characterized in that:
The wall thickness of described leading portion overlap joint ring (4) and back segment overlap joint ring (6) is 1/2 of silicon rubber umbrella cover (3) wall thickness.
3. a kind of high pressure according to claim 1, the defeated change of superhigh pressure are used hollow combined insulator, it is characterized in that:
The length of described leading portion overlap joint ring (4) and back segment overlap joint ring (6) is 10mm～15mm.
4. one kind as each described high pressure of claim 1-3, the defeated production method that becomes with hollow combined insulator of superhigh pressure, silicon rubber umbrella cover (3) is formed by connecting by the silicon rubber umbrella cover section more than two, described silicon rubber umbrella cover is to begin successively from plug inner core (1) one end that insulate that step up cure processes in die cavity, it is characterized in that: machine the umbrella cover The initial segment earlier, umbrella cover The initial segment afterbody is processed as the step leading portion overlap joint ring (4) of overall diameter less than umbrella cover section overall diameter, on leading portion overlap joint ring (4), be coated with adhesive (5), process next section silicon rubber umbrella cover section once more, the leading portion that makes the umbrella cover section that machines is that interior diameter encircles (6) with the back segment overlap joint that overlap joint ring (4) is complementary, described leading portion overlap joint ring (4) is binded by adhesive (5) with back segment overlap joint ring (6) and connects, afterbody with completed silicon rubber umbrella cover section is processed into step leading portion overlap joint ring (4) again, repeat aforesaid operations, machine until whole silicon rubber umbrella cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100309912A CN101290825B (en) | 2008-04-03 | 2008-04-03 | Hollow composite insulator and method of producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100309912A CN101290825B (en) | 2008-04-03 | 2008-04-03 | Hollow composite insulator and method of producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101290825A CN101290825A (en) | 2008-10-22 |
| CN101290825B true CN101290825B (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100309912A Expired - Fee Related CN101290825B (en) | 2008-04-03 | 2008-04-03 | Hollow composite insulator and method of producing the same |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236330A (en) * | 2013-04-20 | 2013-08-07 | 昆山艾博利橡塑胶有限公司 | Silicon rubber insulation layer formed through glue injection in one step |
| CN108010646B (en) * | 2017-12-28 | 2024-04-16 | 中复碳芯电缆科技有限公司 | Inner wall silicon rubber insulating tube and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5877453A (en) * | 1997-09-17 | 1999-03-02 | Maclean-Fogg Company | Composite insulator |
| CN2463922Y (en) * | 2001-01-22 | 2001-12-05 | 戴守国 | Porcelain core and silicon rubber umbrella sleeve combined insulator |
| CN2697788Y (en) * | 2003-09-11 | 2005-05-04 | 马斌 | Hollow composite insulator |
| CN201178004Y (en) * | 2008-04-03 | 2009-01-07 | 醴陵泓嘉机械实业有限公司 | Hollow composite insulator |
-
2008
- 2008-04-03 CN CN2008100309912A patent/CN101290825B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5877453A (en) * | 1997-09-17 | 1999-03-02 | Maclean-Fogg Company | Composite insulator |
| CN2463922Y (en) * | 2001-01-22 | 2001-12-05 | 戴守国 | Porcelain core and silicon rubber umbrella sleeve combined insulator |
| CN2697788Y (en) * | 2003-09-11 | 2005-05-04 | 马斌 | Hollow composite insulator |
| CN201178004Y (en) * | 2008-04-03 | 2009-01-07 | 醴陵泓嘉机械实业有限公司 | Hollow composite insulator |
Non-Patent Citations (2)
| Title |
|---|
| CN 201178004 Y,权利要求1-3. |
| JP特开平6-96633A 1994.04.08 |
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| CN101290825A (en) | 2008-10-22 |
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| ASS | Succession or assignment of patent right |
Owner name: HUNAN PROVINCE POWER CO., LTD. PORCELAIN ELECTRIC Free format text: FORMER OWNER: LILING HONHJIA MACHINERY INDUSTRY CO.,LTD. Effective date: 20090717 |
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Effective date of registration: 20090717 Address after: 6, three road, Liling, Hunan, China: 412205 Applicant after: Hunan Electric Power Corporation Electrical Porcelain Electrical Factory Address before: The postcode of No. three, Shi 131 Road, Liling, Hunan Province, China: 412200 Applicant before: Liling Hongjia Mechanical Industry Co., Ltd. |
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Granted publication date: 20110420 Termination date: 20150403 |
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