CN113745047A - Indoor vacuum circuit breaker - Google Patents
Indoor vacuum circuit breaker Download PDFInfo
- Publication number
- CN113745047A CN113745047A CN202110746271.1A CN202110746271A CN113745047A CN 113745047 A CN113745047 A CN 113745047A CN 202110746271 A CN202110746271 A CN 202110746271A CN 113745047 A CN113745047 A CN 113745047A
- Authority
- CN
- China
- Prior art keywords
- spring
- circuit breaker
- vacuum circuit
- indoor vacuum
- sleeve
- 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.)
- Pending
Links
- 238000013016 damping Methods 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 6
- 230000002441 reversible effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses an indoor vacuum circuit breaker, which comprises a chassis frame, a spring operating mechanism and a solid-sealed pole, wherein the spring operating mechanism and the solid-sealed pole are arranged on the chassis frame; the switch-on spring is connected with the hanging spring shaft and the crank arm through a connecting plate respectively; a one-way damping mechanism is connected between the two connecting plates; according to the indoor vacuum circuit breaker, the structure of the closing brake spring is improved and innovated, the damping device matched with the closing brake spring is designed, a certain buffering effect can be achieved on the action of the closing brake spring, the impact effect on the crank arm is reduced, the impact force between the crank arm and other parts is reduced, the damage caused by the impact force is avoided, and the service life is prolonged.
Description
Technical Field
The invention belongs to the technical field of electrical equipment, and particularly relates to an indoor vacuum circuit breaker.
Background
The vacuum circuit breaker is named because arc extinguishing media and insulating media of contact gaps after arc extinguishing are high vacuum; the arc extinguishing device has the advantages of small volume, light weight, suitability for frequent operation and no need of maintenance for arc extinguishing, and is relatively popularized in power distribution networks. The vacuum circuit breaker is an indoor power distribution device in a 3-10 kV and 50Hz three-phase alternating-current system, can be used for protecting and controlling electrical equipment in industrial and mining enterprises, power plants and transformer substations, is particularly suitable for use places requiring no oil, less maintenance and frequent operation, and can be arranged in a middle cabinet, a double-layer cabinet and a fixed cabinet to be used for controlling and protecting high-voltage electrical equipment.
At present, a spring operating mechanism of an indoor vacuum circuit breaker is provided with a closing spring (usually adopting a tension spring, the spring is stretched during energy storage and shortened during release), the closing spring is connected between a hanging spring shaft and a connecting lever, the connecting lever is driven to swing through the closing spring, and no damping device is suitable at present, so that great impact force is generated on the connecting lever when the closing spring acts, the connecting lever is driven to swing instantly and generate violent impact with other parts, the connecting lever is easy to damage, and the service life is short.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an indoor vacuum circuit breaker, which is characterized in that the structure of a closing brake spring is improved and innovated, and a damping device matched with the closing brake spring is designed, so that the action of the closing brake spring can play a certain buffering role, the impact effect on a crank arm is reduced, the impact force between the crank arm and other parts is reduced, the damage caused by the impact force is avoided, and the service life is prolonged.
The invention discloses an indoor vacuum circuit breaker, which comprises a chassis frame, a spring operating mechanism and a solid-sealed pole, wherein the spring operating mechanism and the solid-sealed pole are arranged on the chassis frame; the switch-on spring is connected with the hanging spring shaft and the crank arm through a connecting plate respectively; and a one-way damping mechanism is connected between the two connecting plates and can buffer the closing spring when the closing spring is released, and meanwhile, the reverse action of the closing spring is not influenced.
Furthermore, the one-way damping mechanism comprises a sleeve and a piston, the sleeve is fixed with one connecting plate, the rod part of the piston is fixed with the other connecting plate, and the head part of the piston is arranged in the sleeve; the telescopic root is equipped with the air flue, and when closing the floodgate spring and shortening the release, drive the piston motion through the connecting plate, and the air flow rate in the sleeve receives the restriction of air flue, has consequently restricted the rate of motion of piston, and then plays the damping action to closing the floodgate spring.
Furthermore, the air passage is T-shaped, so that the air passage is provided with two ports, one port is blocked by a bolt, the other port is provided with a buffer valve, external air can smoothly enter the sleeve by the buffer valve, and the outflow of the air in the sleeve is limited; because the buffer valve is installed, the aperture of the air passage is based on the requirement of smooth flow of gas, whether the bolt is detached or not can be selected according to actual needs, the damping action disappears after the detachment, and the closing spring operates according to the original working mode.
Further, the cushion valve includes the valve body, steel ball and spring, the steel ball passes through the air inlet of spring pressure at the valve body, the inlet end inner wall of valve body is interior spline structure with the part of steel ball contact, because the inlet end inner wall of valve body establishes to interior spline structure with steel ball contact part, consequently, form a plurality of holes between steel ball and the valve body, supply the air outflow in the sleeve, play the effect of restriction air flow rate simultaneously, and during closing spring reverse action, drive the piston retrograde motion, inhale the outside air, the cushion valve is opened under the air current effect during the air suction.
Furthermore, the spring is a tower spring, is suitable for installation in a narrow space, and is favorable for reducing the overall size.
Further, the head of sleeve and piston is equipped with the horizontal pinhole that matches each other, assemble closing spring, connecting plate and one-way damping mechanism into the module, horizontal pinhole is decided according to the required length when closing spring installation, consequently can use a bolt to insert between the head of sleeve and piston when assembling the module, play the positioning action to closing spring, make the length and the installation length of closing spring unanimous, be favorable to realizing automatic equipment, solve spring mounting in the past to artifical reliance, reduce cost, extract the bolt after the equipment, do not influence closing spring and one-way damping mechanism's operation.
Furthermore, the one-way damping mechanism is arranged on the inner side of the closing spring, and is compact in structure and reasonable in layout.
The invention has the beneficial effects that: according to the indoor vacuum circuit breaker, the structure of the closing brake spring is improved and innovated, the damping device matched with the closing brake spring is designed, a certain buffering effect can be achieved on the action of the closing brake spring, the impact effect on the crank arm is reduced, the impact force between the crank arm and other parts is reduced, the damage caused by the impact force is avoided, and the service life is prolonged.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. In the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Figure 1 is a side view of an indoor vacuum interrupter of the present invention;
FIG. 2 is a block diagram of a spring operated mechanism;
fig. 3 is an enlarged view of fig. 2 at a.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
As shown in fig. 1, 2 and 3: the indoor vacuum circuit breaker comprises a chassis frame 01, a spring operating mechanism 02 and a solid-sealed pole 03, wherein the spring operating mechanism 02 is arranged on the chassis frame 01, and comprises a closing spring connected between a hanging spring shaft 1 and a crank arm 10; the switch-on spring is connected with the hanging spring shaft 1 and the crank arm 10 through a connecting plate 2 respectively; and a one-way damping mechanism is connected between the two connecting plates 2, can buffer the closing spring when the closing spring is released, and does not interfere with the reverse action of the closing spring.
In this embodiment, the one-way damping mechanism includes a sleeve 6 and a piston, the sleeve 6 is fixed to one of the connection plates 2, a rod portion 9 of the piston is fixed to the other connection plate 2, and a head portion 8 of the piston is disposed in the sleeve 6; the root of sleeve 6 is equipped with air flue 5, when closing the release of spring, drives the piston motion through connecting plate 2, and the air flow rate in the sleeve 6 receives the restriction of air flue 5, has consequently restricted the velocity of motion of piston, and then plays the damping action to closing the spring.
In this embodiment, the air passage 5 is T-shaped, so that the air passage 5 has two ports, one of the two ports is blocked by the bolt 3, the other port is provided with the buffer valve 4, the buffer valve 4 enables external air to smoothly enter the sleeve 6, and outflow of air in the sleeve 6 is limited; because the buffer valve 4 is installed, the aperture of the air passage 5 is based on the requirement of smooth flow of air, whether the bolt 3 is detached or not can be selected according to actual needs, the damping action disappears after detachment, and the closing spring operates according to the original working mode.
In this embodiment, the cushion valve 4 includes a valve body 11, a steel ball 13 and a spring, the steel ball 13 is pressed at the air inlet of the valve body 11 through the spring, the part of the inner wall of the air inlet end of the valve body 11 contacting the steel ball 13 is an internal spline structure 12, because the part of the inner wall of the air inlet end of the valve body 11 contacting the steel ball 13 is set to be the internal spline structure 12, a plurality of pores are formed between the steel ball 13 and the valve body 11, the air in the sleeve 6 flows out, and the effect of limiting the air flow rate is achieved at the same time, and when the closing spring acts reversely, the piston is driven to move reversely, external air is sucked, and when air is sucked, the cushion valve 4 is opened under the action of air flow.
In this embodiment, the spring is the tower spring, is suitable for and installs in the narrow and small space, does benefit to and reduces whole size.
In this embodiment, the sleeve 6 and the head 8 of the piston are provided with transverse pin holes which are matched with each other, the switch-on spring, the connecting plate 2 and the one-way damping mechanism are assembled into a module, the transverse pin holes are determined according to the required length of the switch-on spring during installation, therefore, a plug pin 7 can be inserted between the sleeve 6 and the head 8 of the piston during module assembly, the switch-on spring is positioned, the length of the switch-on spring is consistent with the installation length, automatic assembly is facilitated, the problem that the spring installation depends on manpower in the past is solved, the cost is reduced, the plug pin 7 is pulled out after the module is assembled, and the operation of the switch-on spring and the one-way damping mechanism is not influenced.
In this embodiment, one-way damping mechanism arranges at closing spring inboard, compact structure, and is rationally distributed.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (7)
1. An indoor vacuum circuit breaker comprises a chassis frame, a spring operating mechanism and a solid-sealed pole, wherein the spring operating mechanism and the solid-sealed pole are arranged on the chassis frame; the method is characterized in that: the switch-on spring is connected with the hanging spring shaft and the crank arm through a connecting plate respectively; and a one-way damping mechanism is connected between the two connecting plates.
2. An indoor vacuum circuit breaker according to claim 1 wherein: the one-way damping mechanism comprises a sleeve and a piston, the sleeve is fixed with one connecting plate, the rod part of the piston is fixed with the other connecting plate, and the head part of the piston is arranged in the sleeve; the root of the sleeve is provided with an air passage.
3. An indoor vacuum circuit breaker according to claim 2 wherein: the air passage is T-shaped, so that the air passage is provided with two ports, one port is plugged through a bolt, and the other port is provided with a buffer valve.
4. An indoor vacuum circuit breaker according to claim 3 wherein: the buffer valve comprises a valve body, a steel ball and a spring, the steel ball is pressed at an air inlet of the valve body through the spring, and the part of the inner wall of the air inlet end of the valve body, which is in contact with the steel ball, is of an internal spline structure.
5. An indoor vacuum circuit breaker according to claim 4 wherein: the spring is a tower spring.
6. An indoor vacuum circuit breaker according to claim 5 wherein: the head parts of the sleeve and the piston are provided with transverse pin holes matched with each other.
7. An indoor vacuum circuit breaker according to claim 6 wherein: the one-way damping mechanism is arranged on the inner side of the closing spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110746271.1A CN113745047A (en) | 2021-07-01 | 2021-07-01 | Indoor vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110746271.1A CN113745047A (en) | 2021-07-01 | 2021-07-01 | Indoor vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113745047A true CN113745047A (en) | 2021-12-03 |
Family
ID=78728508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110746271.1A Pending CN113745047A (en) | 2021-07-01 | 2021-07-01 | Indoor vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113745047A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04282522A (en) * | 1991-03-11 | 1992-10-07 | Toshiba Corp | Buffer type gas breaker with closing resistance |
| CN2640018Y (en) * | 2003-08-06 | 2004-09-08 | 厦门华电开关有限公司 | Indoor high-tension vacuum circuit breaker |
| CN101075509A (en) * | 2007-06-26 | 2007-11-21 | 西安交通大学 | High-voltage vacuum circuit breaker with mono-fracture voltage to 252kV |
| CN101221866A (en) * | 2008-01-28 | 2008-07-16 | 中国电力科学研究院 | Switching-on buffering mechanism in breaker |
| CN201392742Y (en) * | 2009-04-27 | 2010-01-27 | 重庆市电力公司綦南供电局 | Air buffering device and high-voltage vacuum circuit breaker utilizing same |
| CN201408700Y (en) * | 2009-05-13 | 2010-02-17 | 郭画 | Buffering device for heavy-current indoor high-voltage vacuum circuit breaker |
| CN101840809A (en) * | 2010-03-15 | 2010-09-22 | 常州太平洋电力设备(集团)有限公司 | Vacuum circuit breaker with air cushioning |
| CN201956268U (en) * | 2011-03-29 | 2011-08-31 | 贵州长征电器成套有限公司 | Indoor solid-sealed type high-voltage vacuum circuit breaker |
| CN204706505U (en) * | 2015-06-05 | 2015-10-14 | 富英 | For the large power spring operation mechanism of primary cut-out |
| CN108389754A (en) * | 2018-03-29 | 2018-08-10 | 宁波舜利高压开关科技有限公司 | Spring operating mechanism switching-in spring dump energy absorption plant and its operation principle |
| CN208873658U (en) * | 2018-09-29 | 2019-05-17 | 杭州佰盟智能开关有限公司 | A kind of device reducing speed vacuum circuit breaker closing rebound and impact |
-
2021
- 2021-07-01 CN CN202110746271.1A patent/CN113745047A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04282522A (en) * | 1991-03-11 | 1992-10-07 | Toshiba Corp | Buffer type gas breaker with closing resistance |
| CN2640018Y (en) * | 2003-08-06 | 2004-09-08 | 厦门华电开关有限公司 | Indoor high-tension vacuum circuit breaker |
| CN101075509A (en) * | 2007-06-26 | 2007-11-21 | 西安交通大学 | High-voltage vacuum circuit breaker with mono-fracture voltage to 252kV |
| CN101221866A (en) * | 2008-01-28 | 2008-07-16 | 中国电力科学研究院 | Switching-on buffering mechanism in breaker |
| CN201392742Y (en) * | 2009-04-27 | 2010-01-27 | 重庆市电力公司綦南供电局 | Air buffering device and high-voltage vacuum circuit breaker utilizing same |
| CN201408700Y (en) * | 2009-05-13 | 2010-02-17 | 郭画 | Buffering device for heavy-current indoor high-voltage vacuum circuit breaker |
| CN101840809A (en) * | 2010-03-15 | 2010-09-22 | 常州太平洋电力设备(集团)有限公司 | Vacuum circuit breaker with air cushioning |
| CN201956268U (en) * | 2011-03-29 | 2011-08-31 | 贵州长征电器成套有限公司 | Indoor solid-sealed type high-voltage vacuum circuit breaker |
| CN204706505U (en) * | 2015-06-05 | 2015-10-14 | 富英 | For the large power spring operation mechanism of primary cut-out |
| CN108389754A (en) * | 2018-03-29 | 2018-08-10 | 宁波舜利高压开关科技有限公司 | Spring operating mechanism switching-in spring dump energy absorption plant and its operation principle |
| CN208873658U (en) * | 2018-09-29 | 2019-05-17 | 杭州佰盟智能开关有限公司 | A kind of device reducing speed vacuum circuit breaker closing rebound and impact |
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