CN209232661U - A kind of extra-high voltage vacuum interrupter - Google Patents

Abstract

The utility model discloses a kind of extra-high voltage vacuum interrupters, including lower porcelain cylinder, the top high temperature brazing of the lower porcelain cylinder has upper porcelain cylinder, the soldering of the junction of the lower porcelain cylinder and the upper porcelain cylinder has middle seal ring, the inner cavity soldering of the junction of the lower porcelain cylinder and the upper porcelain cylinder has shielding cylinder, there is static side lid in the bottom of the lower porcelain cylinder by soldering connection, the intracavity bottom of the lower porcelain cylinder is equipped with quiet bar, the quiet bar mutually runs through with the static side lid and high temperature brazing is welded therewith, grading shield is installed in the middle part of the quiet bar, the top soldering of the upper porcelain cylinder has moved end lid, the top contact of the moved end lid and the upper porcelain cylinder is socketed with sealing ring, the static side lid and the moved end lid mutually have grading ring depending on one side erection welding, there is fixed ring at the top of the moved end lid by coaxially soldering, the utility model is by improving in it The uniformity of portion's electric field strength increases the outer creepage distance of porcelain cylinder, reaches the resultant effect for improving vacuum tube insulation performance and breakdown strength.

Description

A kind of extra-high voltage vacuum interrupter

Technical field

The utility model relates to vacuum interrupter technical field, specially a kind of extra-high voltage vacuum interrupter.

Background technique

Vacuum interrupter also known as vacuum switch tube are the core components of mesohigh power switch, and main function is to lead to Crossing the excellent insulating properties of vacuum in managing makes after mesohigh circuitry cuts power supply blow-out and to inhibit electric current rapidly, avoids accident and meaning Outer generation is mainly used in the transmission & distribution electric control system of electric power, is also applied to metallurgy, mine, petroleum, chemical industry, railway, wide It broadcasts, communicate, the distribution systems such as industrial high-frequency heating.With energy conservation, section material, fire prevention, explosion-proof, small in size, the service life is long, maintenance cost The features such as low, reliable for operation and pollution-free.This vacuum interrupter is 72.5KV arc extinguishing chamber for breaker

In general the uniformity requirement of vacuum interrupter internal electric intensity is as the raising of voltage class can increasingly Harsh, this just gives the internal structure design of vacuum interrupter, and more stringent requirements are proposed, the 72.5KV breaker vacuum extinction In addition to optimizing shielding cylinder end bead designs, which increases the pressure for being intended to be obviously improved internal field strength for room Ring design, the reliability for further improving vacuum tube built-in electrical insulation breakdown voltage and using.

The uniformity of vacuum switch tube internal electric intensity in the prior art is poor, and internal contact assembly cannot Meet extra-high voltage high-current on-off requirement, while the insulation performance of its shell and breakdown strength are to be improved, therefore needs to research and develop A kind of extra-high voltage vacuum interrupter.

Utility model content

The purpose of this utility model is to provide a kind of extra-high voltage vacuum interrupters, to solve to propose in above-mentioned background technique Extra-high voltage vacuum interrupter internal electric intensity uniformity it is poor, internal contact assembly is not able to satisfy the big electricity of extra-high voltage Stream cut-offs the problem of characteristics such as requirement.

To achieve the above object, the utility model provides the following technical solutions: a kind of extra-high voltage vacuum interrupter, including under Porcelain cylinder, the top high temperature brazing of the lower porcelain cylinder have a upper porcelain cylinder, during the junction soldering of the lower porcelain cylinder and the upper porcelain cylinder has The inner cavity soldering of the junction of seal ring, the lower porcelain cylinder and the upper porcelain cylinder has shielding cylinder, and the bottom of the lower porcelain cylinder passes through pricker Weldering is connected with static side lid, and the intracavity bottom of the lower porcelain cylinder is equipped with quiet bar, the quiet bar mutually run through with the static side lid and with High temperature brazing welding, grading shield is installed, the top soldering of the upper porcelain cylinder has moved end lid, described dynamic in the middle part of the quiet bar The top contact of end cap and the upper porcelain cylinder is socketed with sealing ring, and the static side lid and the moved end lid are mutually filled depending on one side With grading ring is welded with, the top of the moved end lid, which is coaxially brazed, fixed ring, is equipped in the middle part of the inner cavity of the upper porcelain cylinder dynamic Bar, for the lever through the top of the fixed ring, the fixed ring slidably connects lever by installing guide sleeve, described The bottom soldering of moved end lid has bellows, and the bellows is located at the inner cavity top of the upper porcelain cylinder, the bottom of the bellows High temperature brazing is welded with protective cover, and close one end of the lever and the quiet bar, which is brazed, contact assembly, and the contact Component is located at the inner cavity of the shielding cylinder.

Preferably, the lower porcelain cylinder and the upper porcelain cylinder are cylindrical metal porcelain cylinder.

Preferably, the protective cover is the stainless steel stretched punching part of 316L.

Preferably, detent, the detent and phase at the top of the inner wall of the lower porcelain cylinder are provided in the middle part of the outer wall of the shielding cylinder Welding.

Preferably, the lower porcelain cylinder and the upper porcelain cylinder are the identical cylinder of size.

Compared with prior art, the utility model has the beneficial effects that the utility model provides a kind of extra-high voltage vacuum The inside of arc-chutes is provided with shielding cylinder and grading ring, is effectively improved the uniformity of its internal electric intensity, and interior insulation is full Sufficient injectron performance parameter requirement, vertical magnetic field structure of contact terminal design meet extra-high voltage high-current on-off requirement, and switching tube is adopted Insulation performance and the breakdown strength tool of porcelain cylinder are good, and 95 metallization electronics of mechanical strength are improved by increasing relative dimensions Ceramics.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model.

In figure: 1 lower porcelain cylinder, 2 static side lids, 3 grading rings, 4 quiet bars, 5 grading shields, 6 moved end lids, 7 sealing rings, 8 protective covers, 9 Bellows, 10 shielding cylinders, 11 contact assemblies, seal ring in 12,13 fixed rings, porcelain cylinder, 15 levers on 14.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The utility model provides a kind of technical solution: a kind of extra-high voltage vacuum interrupter, including lower porcelain cylinder 1, and feature exists In: the top high temperature brazing of the lower porcelain cylinder 1 has upper porcelain cylinder 14, and the junction of the lower porcelain cylinder 1 and the upper porcelain cylinder 14 is brazed There is middle seal ring 12, lower porcelain cylinder 1 and the upper porcelain cylinder 14 are cylindrical metal porcelain cylinder, increase outer creepage distance, internal electricity Field intensity uniformity advanced optimizes, it is possible to bear higher voltage, lower porcelain cylinder 1 and the upper porcelain cylinder 14 are that size is identical Cylinder, the lower porcelain cylinder 1 and the inner cavity soldering of the junction of the upper porcelain cylinder 14 have shielding cylinder 10, and shielding cylinder 10 can be effective The junction of lower porcelain cylinder 1 and upper porcelain cylinder 14 is shielded, increase outer creepage distance raising external insulation withstanding voltage, under described There is a static side lid 2 in the bottom of porcelain cylinder 1 by soldering connection, and the intracavity bottom of the lower porcelain cylinder 1 is equipped with quiet bar 4, the quiet bar 4 with 2 phase of static side lid runs through and high temperature brazing is welded therewith, and the middle part of the quiet bar 4 is equipped with grading shield 5, the upper porcelain cylinder 14 Top soldering have a moved end lid 6, the top contact of the moved end lid 6 and the upper porcelain cylinder 14 is socketed with sealing ring 7, described quiet End cap 2 and the moved end lid 6 mutually have grading ring 3 depending on one side erection welding, and the top of the moved end lid 6 is spirally connected by screw thread There is a fixed ring 13, lever 15 is installed in the middle part of the inner cavity of the upper porcelain cylinder 14, the lever 15 is through the fixed ring 13 Top, the fixed ring 13 slidably connect lever 15 by installing guide sleeve, and the bottom soldering of the moved end lid 6 has bellows 9, the bellows 9 is located at the inner cavity top of the upper porcelain cylinder 14, and the bottom high temperature brazing of the bellows 9 is welded with protective cover 8, protective cover 8 is the stainless steel stretched punching part of 316L, and close one end of the lever 15 and the quiet bar 4, which is brazed, sets of contacts Part 11, and the contact assembly 11 is located at the inner cavity of the shielding cylinder 10.

In the specific use process, when needing the utility model, fixed ring 13 is built-in to its first during use Guide sleeve carry out riveting fixation, lever 15 slides up and down movement when switch motion, while moved end lid 6 and fixed ring 13 Bottom carries out soldering fixation, passes through moved end lid 6 and is brazed fixation between upper end sealing ring 7 and upper porcelain cylinder 14, while bellows 9 is logical Overprotection cover 8 and the outer wall step surface of lever 15 weld, and the inner cavity soldering in the junction of lower porcelain cylinder 1 and upper porcelain cylinder 14 has shielding Contact assembly 11, is in contact when 15 slide downward of lever, realizes the effect of energization by cylinder 10, shielding of the realization to electric arc, when When lever 15 moves up, 11 phase of contact assembly is separated, can effectively be cut off the power, it is equal with porcelain cylinder 1 at present and upper porcelain cylinder 14 For electronic ceramics, there is splendid insulation performance and breakdown strength, grading ring 3 and shielding cylinder are installed inside vacuum switch tube 10 ensure that the uniformity of electric field strength, and all parts form the entirety that an inside is high vacuum by high temperature brazing.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of extra-high voltage vacuum interrupter, including lower porcelain cylinder (1), it is characterised in that: the top high temperature pricker of the lower porcelain cylinder (1) It is welded with porcelain cylinder (14), the junction soldering of the lower porcelain cylinder (1) and the upper porcelain cylinder (14) has middle seal ring (12), the lower porcelain The inner cavity soldering of the junction of cylinder (1) and the upper porcelain cylinder (14) has shielding cylinder (10), and the bottom of the lower porcelain cylinder (1) passes through pricker Weldering is connected with static side lid (2), and the intracavity bottom of the lower porcelain cylinder (1) is equipped with quiet bar (4), the quiet bar (4) and the static side Lid (2) mutually runs through and high temperature brazing is welded therewith, is equipped with grading shield (5) in the middle part of the quiet bar (4), the upper porcelain cylinder (14) Top soldering have moved end lid (6), the top contact of the moved end lid (6) and the upper porcelain cylinder (14) is socketed with sealing ring (7), the static side lid (2) and the moved end lid (6) mutually has grading ring (3) depending on one side erection welding, the moved end lid (6) Top be coaxially brazed and have fixed ring (13), lever (15), the lever are installed in the middle part of the inner cavity of the upper porcelain cylinder (14) (15) through the top of the fixed ring (13), the fixed ring (13) slidably connects lever by installing guide sleeve (15), the bottom soldering of the moved end lid (6) has bellows (9), and the bellows (9) is located at the inner cavity of the upper porcelain cylinder (14) The lower part high temperature brazing on top, the bellows (9) is welded with protective cover (8), and the lever (15) is leaned on quiet bar (4) Nearly one end, which is brazed, to be had contact assembly (11), and the contact assembly (11) is located at the inner cavity of the shielding cylinder (10).

2. a kind of extra-high voltage vacuum interrupter according to claim 1, it is characterised in that: the lower porcelain cylinder (1) and described Upper porcelain cylinder (14) is cylindrical metal porcelain cylinder.

3. a kind of extra-high voltage vacuum interrupter according to claim 1, it is characterised in that: the protective cover (8) is 316L Stainless steel stretched punching part.

4. a kind of extra-high voltage vacuum interrupter according to claim 1, it is characterised in that: the outer wall of the shielding cylinder (10) Middle part is provided with detent, the detent and phase Welding at the top of the inner wall of the lower porcelain cylinder (1).

5. a kind of extra-high voltage vacuum interrupter according to claim 1, it is characterised in that: the lower porcelain cylinder (1) and described Upper porcelain cylinder (14) is the identical cylinder of size.