CN2226334Y

CN2226334Y - High-voltage synthesized isolator

Info

Publication number: CN2226334Y
Application number: CN 95210329
Authority: CN
Inventors: 黄小宁
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-28
Filing date: 1995-04-28
Publication date: 1996-05-01
Anticipated expiration: 2005-04-28

Abstract

The utility model relates to a high-voltage synthesized isolator which is suitable for a high-voltage transmitting and converting system. The utility model is composed of a core rod, an umbrella disk and a metal end head, wherein, the metal end head is composed of a single section bowl head connected with a submerged-type end head. The submerged end head is connected with the core rod end head by a wedge sheet. The front end of the submerged-type end head is provided with a ball head and is matched with a ball socket of the single section bowl head. The upper end of the ball socket is provided with a stopping piece, and the core rod is directly sheathed with the umbrella disk. The utility model has the characteristics of simple and reliable structure, easy manufacture and quality assurance. The utility model is characterized in that the reliability and the stability of the connection of hardware fittings and the core rod are enhanced, and the useful insulation distance of the isolator is increase at the same time.

Description

High-pressure synthetic isolator

The utility model relates to a kind of high-pressure synthetic isolator that the high voltage power transmission and transforming system uses that is suitable for, and belongs to a kind of important High-Voltage Insulation device of a large amount of uses.

Adopt the made high-tension insulator of high molecular synthetic material and glass fiber reinforced plastics composite material owing to be better than porcelain and glass insulator in all many-sides such as electric, ellipse performance, contour structures, weight, especially under the wet condition of dirt, can prevent the generation of pollution flashover accident effectively, thereby, since the eighties, it is by the increasingly extensive high voltage power transmission and transforming system that is applied to.At present, formed the trend that progressively replaces porcelain and glass insulator.

High-pressure synthetic isolator is by umbrella disk, plug and metal termination three parts are formed, a kind of high-tension synthetic insulator that in Chinese patent CN85101712B, proposes, though possess have electric preferably, mechanical performance, and used in batches, but also exposed the some shortcomings part in actual use: one, this insulator metal termination is by external conical sleeve, inner conical drogue, screw thread screw thread draw ring and packing ring constitute, be extruded with the sheath that thickness is the 1-4 millimeter in the periphery of epoxy resin plug, the equal more complicated of the structure of whole insulator and manufacture craft, the production cost height, metal termination particularly, to the requirement on machining accuracy height of each part, frock cooperates difficulty big, the assembly quality reliability is low, therefore, in batch process, the stability and the reliability of this product quality are not ideal enough, do pull test, destruction value dispersion rate is generally greater than 25%, in actual use, and therefore and accidents caused; They are two years old, owing to be subjected to the restriction of metal end header structure, this insulator hardware length is longer, thereby its effective insulated lengths is shortened relatively, constitute influence during use, by the insulation coordination of national standard design, its flashover voltage, lightning wave impulse to the line insulation matching property, operation wave impact equivalence all is lower than porcelain and glass insulator, has brought certain difficulty to practical application.

The purpose of this utility model is to provide a kind of improved high-pressure synthetic isolator, and it is not only simple and reliable for structure, is easy to make and guarantee the quality of production, and has shortened the length of insulator hardware, to improve its effective insulated lengths.

The purpose of this utility model is realized by following scheme: have a plug 5, be set with umbrella disk 7 on the plug, the two ends of plug and metal termination link, its difference is that golden termination is connected by simply connected bowl 2 and submersible termination 4 and forms, the submersible termination links by key 6 and plug termination, the front end of submersible termination 4 does not have bulb and matched with the ball-and-socket of simply connected bowl head, and the upper end of ball-and-socket is installed on a stop part 1.

According to such scheme, plug of the present utility model is an epoxy resin pulling plug, form through the vacuum impregnation resin treatment, it can not establish restrictive coating, directly socket-connect after being coated with last layer fluid sealant 8 between plug 5 and the umbrella disk 7, it is interference fit that socket cooperates, and fluid sealant at room temperature solidifies through the grip force pressing of umbrella disk self.

Press such scheme, main feature of the present utility model is: the metal termination is adopted the bulb ball-and-socket connecting mode of submersible and is linked by key and plug, this has simplified the structure of metal termination on the one hand, reduced to connect and cooperated link, improved the reliability that metal connects with plug, also simplified processing technology on the other hand, in batch process, make the reliability of making assembly quality, stability, improve greatly, in failure test with the part section material, destruction value dispersion rate is no more than 1.4%, thereby has guaranteed the quality and the serviceability of product, and the simplification of structure has simultaneously also reduced production cost of products.In addition, adopt submersible metal end header structure of the present utility model, coupling device is few and compact, shortened the length of insulator hardware, make the effective insulated lengths of insulator obtain increasing, thereby improved its flashover voltage, lightning impulse and operating impulse voltage, its line insulation matching property is improved.The bulb connecting mode is adopted at two ends of the present utility model, stressed cross section, termination is amid a sharp increase, its linking intensity is further strengthened, in addition, umbrella disk of the present utility model and plug adopt the mode of direct close-coupled, the sealing that relies on the distinctive sealing property of rubber mass umbrella disk to keep plug also makes the processing technology of this insulator obtain further simplification.

Fig. 1 is the front view of an embodiment of the utility model.

Fig. 2, Fig. 3 are the utility model submersible termination master's cutaway view and right view.

Fig. 4 is the sectional view of the utility model simply connected bowl head.

Fig. 5 is the A-A cutaway view among Fig. 4.

Embodiment of the present utility model such as Fig. 1,2,3,4, shown in 5, has an elongated epoxy resin pulling plug 5, plug is through the impregnating resin vacuum treatment, impregnant is mainly by epoxy resin-impregnated, composition such as curing agent and diluent, under vacuum 0.06-0.08KPa atmospheric pressure, flood, plug 5 surfaces are coated with directly suit upper umbrella disc 7 of last layer organosilicon sealant 8 backs, umbrella disk and plug are that interference connects, the about 0.1-2 millimeter of the magnitude of interference, place, umbrella disk middle inside connection holes position offers the groove of splicing, can embed with the convex top in the next umbrella disk outside and join, to strengthen its damp proof insulation sealing property, umbrella disk can be provided with big umbrella disk and little umbrella disk, interlaced arrangement, the diameter of big umbrella disk can reach 24 centimetres, umbrella plate material can be by methyl vinyl silicone rubber, white carbon, kaolin, silicon bath soil, talcum powder, mica powder, or filling aluminium hydrate, structure regulator, coupling agent, vulcanizing agent, antiaging agent, light stabilizer, initator, lubricant, colouring agent is formed, and through mixing, heat treatment, sulfuration is shaped, technologies such as post vulcanization are made, be connected with the metal termination at the two ends of plug, metal end includes simply connected bowl 2 and submersible termination 4, the first side of simply connected bowl is provided with draw ring 11, opposite side is provided with ball-and-socket 13, ball-and-socket one side has the turnover notch, the bulb 9 of ball-and-socket and submersible termination 4 one ends is matched, the submersible termination longitudinally is provided with the taper hole of oval shape, be mounted with plug 5 terminations in the taper hole, the plug termination has been cut breach vertically, the fan-shaped key 6 of wedging in the breach, it is connected firmly mutually with submersible termination 4, plug breach afterbody can be suitably along long or establish circular hole, in case stress is concentrated, be equipped with filler end socket 3 on the top of plug and key, play sealing and tightly enclose connection, the other end of submersible termination connects by sealing compound 10 and umbrella disk 7, in addition, top at simply connected bowl head shoot nest 13 has a through hole 12 corresponding to turnover notch side, via through holes is installed a locking pin 1 at the ball-and-socket top, the bulb 9 of submersible termination is locked in the ball-and-socket of simply connected bowl head and can't deviate from.

Claims

1, a kind of high-pressure synthetic isolator that is suitable for the use of high voltage power transmission and transforming system, has a plug (5), be set with umbrella disk (7) on the plug, the two ends of plug and metal termination link, it is characterized in that the metal termination is formed by simply connected bowl head (2) and submersible termination (4) connection, the submersible termination links by key (6) and plug (5) termination, and the front end of submersible termination is provided with bulb and matched with the ball-and-socket of simply connected bowl head, and the upper end of ball-and-socket is installed on a stop part (1).

2, by the described high-pressure synthetic isolator of claim 1, directly socket-connect after it is characterized in that being coated with last layer fluid sealant (8) between plug (5) and the umbrella disk (7), it is interference fit that socket cooperates.

3, by claim 1 or 2 described high-pressure synthetic isolators, it is characterized in that submersible termination (4) longitudinally is provided with the taper hole of oval shape, be mounted with plug (5) termination in the taper hole, the plug termination has been cut breach vertically, wedging fan-shaped key (6) is equipped with filler end socket (3) in the breach on the top of plug and key.

4, at claim 1 or 2 described high-pressure synthetic isolators, it is characterized in that having a through hole (12) corresponding to turnover notch side on the top of simply connected bowl head (2) ball-and-socket (13), via through holes is installed a locking pin (1) at the ball-and-socket top.

5, by claim 1 or 2 described high-pressure synthetic isolators, it is characterized in that umbrella disk (7) material is divided or filling aluminium hydrate by methyl vinyl silicone rubber, white carbon, kaolin, silicon bath soil, talcum powder, mica, structure regulator, coupling agent, vulcanizing agent, antiaging agent, light stabilizer, initator, lubricant, colouring agent are formed.

6,, it is characterized in that plug (5) is for epoxy resin pulling plug and through the impregnating resin vacuum treatment by claim 1 or 2 described high-pressure synthetic isolators.