CN201708505U

CN201708505U - Inner cone bus insulating sleeve

Info

Publication number: CN201708505U
Application number: CN2010202484247U
Authority: CN
Inventors: 国世峥; 大岛俨; 王利; 于琦
Original assignee: SHENYANG HUALI ENERGY EQUIPMENT MANUFACTURING Co Ltd
Current assignee: SHENYANG HUALI ENERGY EQUIPMENT MANUFACTURING Co Ltd
Priority date: 2010-07-06
Filing date: 2010-07-06
Publication date: 2011-01-12
Anticipated expiration: 2020-07-06

Abstract

The utility model relates to an inner cone bus insulating sleeve, overcoming the technical problems that the insulating capability of a frustum-shaped inner cone insulator at the outer part of the insulator in the prior art is lower and is unstable, the internal electric field of a product is non-uniform and the shielding level is insufficiency, the concentration of the electric field caused at the combined part of the insulator and a high-voltage terminal is easy to generate phenomena of discharging and flashover, and the product can not be applied on metal-enclosed switch equipment which takes the dry and compressed air as an insulating medium. The inner cone bus insulating sleeve is characterized in that the outer surface of the insulator is a raised arc-shaped conical surface; a groove at the combined part of the insulator and the high-voltage terminal is an arc opening; an upper round platform and the raised arc-shaped conical surface of the insulator adopt arc transition to form an arc boss; and in addition, a high-voltage shielding ring is made of conducting plastic and the contact surface of the high-voltage shielding ring and the high-voltage terminal is of a teeth-shaped structure. The inner cone bus insulating sleeve has the benefit effects of being reasonable in structure and reliable in insulation, having uniform internal and external electric fields of a product, and preventing the phenomena of corona, discharging and flashover and the like when being used in the metal-enclosed switch equipment which takes the dry and compressed air as the insulating medium.

Description

A kind of inner cone bus insulation sleeve pipe

Technical field

The utility model belongs to high voltage electrical apparatus technical field, be particularly related to a kind of insulating sleeve of Cubicle Gas-Insulated Switchgear special use, a kind of inner cone bus insulation sleeve pipe that connects in particular for bus between two equipment in the dried compressed air insulated metal sealing switch equipment.

Background technology

The bus insulation sleeve pipe is the main transition insulation component that the Cubicle Gas-Insulated Switchgear upper conductor entered and drew switchgear, and its insulation property directly influence performance, operational reliability and the personal safety of Cubicle Gas-Insulated Switchgear.Bus insulation sleeve pipe such as the application number that uses is 200820015232.4 disclosed " sulfur hexafluoride gas insulation switch cabinet inner cone insulators " at present, its insulator exterior and inner chamber all are taper type, the inner cone insulator that this outside also is the frustum shape is applicable to sulfur hexafluoride gas insulation switch cabinet, be because the sulfur hexafluoride gas-insulating performance is higher than the dried compressed air insulation property, under the condition that charges into dried compressed air insulated metal sealing switch equipment, this outside also is the inner cone insulator of frustum shape, and insulating capacity is lower and unstable; In addition, disclosed 200820015232.4 " sulfur hexafluoride gas insulation switch cabinet inner cone insulator ", the groove of its insulator and HV Terminal joint portion is straight mouthful, the knuckle of round platform and cone side is less than 3 millimeters on the insulator, its high-tension shielding cover is a metallic article, and form electric and mechanical connection between the HV Terminal, its contact-making surface easily produces the gap, the product internal electric field is inhomogeneous, shielding level deficiency, cause electric field to concentrate at insulator and HV Terminal joint portion, be easy to generate discharge and flashover phenomenon.The existence of the problems referred to above makes prior art inner cone insulator can not be applied in the metal enclosed switchgear that dried compressed air is made dielectric.

Summary of the invention

Technical problem to be solved in the utility model is, overcome the deficiencies in the prior art part, according to research to the dried compressed air insulation characterisitic, design a kind of profile and internal structure and can optimize, be applicable to that dried compressed air makes a kind of inner cone bus insulation sleeve pipe of the metal enclosed switchgear of dielectric electric field.

The technical solution adopted in the utility model comprises HV Terminal, insulator, high-tension shielding ring, low pressure shading ring, embedded nut and seal groove, the outer surface of described insulator is the protrusion arc conical surface, the groove at insulator and HV Terminal junction surface is the circular arc mouth, the last round platform of insulator and the protrusion arc conical surface of insulator adopt arc transition, form a circular arc boss.

The transition arc radius of the last round platform of described insulator and the protrusion arc conical surface of insulator is 5～8 millimeters.

Described high-tension shielding ring is made by conductive plastics, with the contact-making surface of HV Terminal be dentalation.

Described low pressure shading ring is made by conductive plastics, and is embedded with the electrification display socket.

Compared with prior art, the beneficial effects of the utility model are:

(1) insulation is reliable, electric field is even.The electric field shielding design of optimizing, the protrusion arc conical surface design of insulator and HV Terminal junction circular arc boss and circular arc port recess and insulator outside surface, the high-tension shielding ring is made by conductive plastics, with the HV Terminal contact-making surface be dentalation, be inlaid in HV Terminal, contact closelyr, shield effectiveness is good, make the inside and outside electric field of product more even, use in dried compressed air insulated metal sealing switch equipment, phenomenons such as corona, discharge, flashover can not occur.

(2) rational in infrastructure, sealing is reliable.Directly injection-compression molding has sealed groove on the installed surface of insulator, and its surface smoothness height is good with the O-ring seals fiting effect.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the utility model high-tension shielding ring front view.

Fig. 4 is the B-B cutaway view of Fig. 3.

Among the figure:

1. HV Terminal, 2. insulator, 3. high-tension shielding ring, 4. low pressure shading ring, 5. embedded nut, 6. seal groove, 7. electrification display socket.

Embodiment

As shown in drawings, the utility model comprises HV Terminal 1, insulator 2, high-tension shielding ring 3, low pressure shading ring 4, embedded nut 5, seal groove 6 and electrification display socket 7, wherein insulator 2 adopts epoxy resin to add the silicon powder filler through the pressure injection hot curing and into a single integrated structure, make insulation property more stable, described insulator 2 is the circular arc mouth with the groove at HV Terminal 1 junction surface, it is 5～8 millimeters bigger transition arcs that radius is adopted on the last round platform of insulator 2 and the cone of insulator 2 surface, form a circular arc boss, the outer surface of described insulator 2 is the protrusion arc conical surface, the inner chamber upper end is the face of cylinder, the lower end is a taper seat, the design of the insulator 2 of above-mentioned shape, make the inside and outside electric field of product more even, optimized the Electric Field Distribution state; Described HV Terminal 1, high-tension shielding ring 3, low pressure shading ring 4 and embedded nut 5 are all as on the inserts pressure injection relevant position that each design is determined in insulator 2, described high-tension shielding ring 3 is made by conductive plastics, with the contact-making surface of HV Terminal 1 be dentalation, be inlaid in HV Terminal, form electric connection, contact tightr; Described low pressure shading ring 4 is made by conductive plastics, and is embedded with electrification display socket 7, has shielding and voltage induced function concurrently, when not using electrification display, with electrification display socket reliable ground; Directly injection-compression molding has sealed groove 6 on the installed surface of insulator 2, and its surface smoothness height is good with the O-ring seals fiting effect.In the use, inner chamber at insulator 2 is installed bus tie, and bus is installed in the inner chamber of two identical insulators 2 by bus tie, be connected with mounting flange by embedded nut 5, in sealed groove 6, O-ring seals is installed, bus between two equipment in the dried compressed air insulated metal sealing switch equipment can be connected, easy for installation and firm.

Claims

1. inner cone bus insulation sleeve pipe, comprise HV Terminal (1), insulator (2), high-tension shielding ring (3), low pressure shading ring (4), embedded nut (5) and seal groove (6), it is characterized in that, the outer surface of described insulator (2) is the protrusion arc conical surface, described insulator (2) is the circular arc mouth with the groove at HV Terminal (1) junction surface, the protrusion arc conical surface of the last round platform of insulator (2) and insulator (2) adopts arc transition, forms a circular arc boss.

2. according to the described a kind of inner cone bus insulation sleeve pipe of claim 1, it is characterized in that the transition arc radius of the protrusion arc conical surface of the last round platform of described insulator (2) and insulator (2) is 5～8 millimeters.

3. according to claim 1 or 2 described a kind of inner cone bus insulation sleeve pipes, it is characterized in that described high-tension shielding ring (3) is made by conductive plastics, with the contact-making surface of HV Terminal (1) be dentalation.

4. according to claim 1 or 2 described a kind of inner cone bus insulation sleeve pipes, it is characterized in that described low pressure shading ring (4) is made by conductive plastics, and be embedded with electrification display socket (7).