CN201178004Y - Hollow composite insulator - Google Patents
Hollow composite insulator Download PDFInfo
- Publication number
- CN201178004Y CN201178004Y CNU2008200527575U CN200820052757U CN201178004Y CN 201178004 Y CN201178004 Y CN 201178004Y CN U2008200527575 U CNU2008200527575 U CN U2008200527575U CN 200820052757 U CN200820052757 U CN 200820052757U CN 201178004 Y CN201178004 Y CN 201178004Y
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- CN
- China
- Prior art keywords
- joint ring
- overlap joint
- umbrella cover
- lap joint
- silicon rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a hollow compound insulator, which comprises an insulator mandrel inner cylinder, a terminal flange, and a silicone rubber sheath formed by jointing more than two silicone rubber sheath segments. The joint structure of two adjacent silicone rubber sheath segments has a stepped lap joint structure (i.e. the tail end of a previous processed sheath segment has a stepped front part lap joint ring with outside diameter smaller than the sheath segment outside diameter), a bonding agent is coated on the anterior segment lap joint ring, the rear part of a subsequent processed sheath segment has a rear part lap joint ring with inside diameter matching with the front part lap joint ring, and the front part lap joint ring and the rear part lap joint ring are jointed by the boning agent). The lap joint structure of the compound insulator increases lap joint bonding area, enhances the joint strength between two sheathes when the silicone rubber sheath is subjected to an axial tensile force, and remarkably reduces thinning and tension fracture phenomena caused by silicone rubber shrinkage, so as to ensure the electrical performance and prolong the service life of the compound insulator.
Description
Technical field
The utility model relates to a kind of high-tension power transmission and transformation equipment, particularly a kind of hollow combined insulator.
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.
The utility model content
The purpose of this utility model provides a kind of hollow combined insulator, and it connects umbrella structural reliability height, good electric property, long service life.
The technical solution of the utility model 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 utility model, 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 utility model, the length that described leading portion overlap joint ring and back segment overlap joint encircle all is not less than 10～15mm.
The beneficial effects of the utility model are:
Because bridging arrangement of the present utility model 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 utility model, 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 utility model is described in further detail below in conjunction with the embodiment accompanying drawing.
Fig. 1 is hollow combined insulator overall structure figure of the present utility model;
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 utility model.
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 utility model 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.
The production method of above-mentioned 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 utility model 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.
The production method of above-mentioned 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 utility model 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 range of the present utility model.
Claims (3)
1. 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: 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 (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 processes at one time after described is that interior diameter encircles (6) with the back segment overlap joint that overlap joint ring (4) is complementary, and described leading portion overlap joint ring (4) is connected by adhesive (5) bonding with back segment overlap joint ring (6).
2, a kind of hollow combined insulator according to claim 1 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 hollow combined insulator according to claim 1 is characterized in that: the length of described leading portion overlap joint ring (4) and back segment overlap joint ring (6) is 10mm～15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200527575U CN201178004Y (en) | 2008-04-03 | 2008-04-03 | Hollow composite insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200527575U CN201178004Y (en) | 2008-04-03 | 2008-04-03 | Hollow composite insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201178004Y true CN201178004Y (en) | 2009-01-07 |
Family
ID=40218028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200527575U Expired - Lifetime CN201178004Y (en) | 2008-04-03 | 2008-04-03 | Hollow composite insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201178004Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290825B (en) * | 2008-04-03 | 2011-04-20 | 湖南省电力公司电瓷电器厂 | Hollow composite insulator and method of producing the same |
-
2008
- 2008-04-03 CN CNU2008200527575U patent/CN201178004Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290825B (en) * | 2008-04-03 | 2011-04-20 | 湖南省电力公司电瓷电器厂 | Hollow composite insulator and method of producing the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090107 Effective date of abandoning: 20080403 |