CN208240563U - A kind of high-low pressure vacuum circuit breaker - Google Patents
A kind of high-low pressure vacuum circuit breaker Download PDFInfo
- Publication number
- CN208240563U CN208240563U CN201820659106.6U CN201820659106U CN208240563U CN 208240563 U CN208240563 U CN 208240563U CN 201820659106 U CN201820659106 U CN 201820659106U CN 208240563 U CN208240563 U CN 208240563U
- Authority
- CN
- China
- Prior art keywords
- piston
- arc
- moving contact
- chutes
- circuit breaker
- 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 - Fee Related
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Abstract
The utility model belongs to vacuum circuit breaker technical field, discloses a kind of high-low pressure vacuum circuit breaker, leads to that arc extinguishing and insulation performance are reduced for solving existing vacuum circuit breaker due to sulfur hexafluoride low-temperature liquefaction and there are security hidden troubles.The utility model includes tubular arc-chutes, static contact and moving contact are installed in the arc-chutes, the moving contact is connected with the catch bar for driving moving contact in arc extinguishing indoor moving, the catch bar is internally provided with the through hole passed through for electric wire, the catch bar is set in arc-chutes through moving contact mounting blocks, compressed spring is disposed with along the direction of moving contact mounting blocks to moving contact in arc-chutes, first piston and second piston, catch bar passes through first piston and second piston is connect with moving contact, it is fixedly connected between first piston and second piston through connecting rod.
Description
Technical field
The utility model belongs to vacuum circuit breaker technical field, and in particular to a kind of high-low pressure vacuum circuit breaker.
Background technique
The dielectric of vacuum circuit breaker contact gap after its arc-extinguishing medium and arc extinguishing is gained the name due to be all high vacuum, is had
There is the advantages of small in size, light-weight, not have to maintenance suitable for frequent operation, arc extinguishing, using extremely universal in power distribution network.Vacuum
Short-circuiting device is 3-10KV, the indoor distribution in 50Hz three-phase alternating current system, in industrial and mining enterprises, power plant, substation
Protection and control as electrical equipment are used, especially suitable for non-oil ultra high vacuum system, less overhaul frequent operation field of employment, breaker
It is configurable on middle-placed switch cabinet, double-layer cabinet, fixes in cabinet and is used as control and protection high-voltage electrical equipment.
Vacuum circuit breaker in the prior art is mostly by moving contact, static contact and moving contact to be driven to move together
Operating stick is arranged together in an arc-chutes, and arc extinguishing gases are then filled in entire arc-chutes.Such as application No. is
201620395287.7 patent discloses a kind of vacuum circuit breaker, including conductive pole column, is provided with the operation machine of operating mechanism
Structure case, propulsive mechanism and cart frame, wherein conductive pole column is mounted in operating mechanism box, and propulsive mechanism is mounted on handcart frame
Top inside frame, operating mechanism box can be combined formula installation with the cart frame of installation propulsive mechanism, be dragged into mechanism reality
Now to the position control of vacuum circuit breaker, operating mechanism box is L shape, and conductive pole column is mounted on the L bottom plate of operating mechanism box；Also
It including upper sealing plate, is mounted on the L vertical edge of operating mechanism box, and the front of conductive pole column.
Vacuum circuit breaker is widely used in outdoor cable branch box, box-type substation etc., and sulfur hexafluoride has excellent exhausted
Edge and arc extinction performance are widely used, but sulfur hexafluoride gas can liquefy in low temperature, cause sulfur hexafluoride gas
Body insulation, arc extinguishing ability reduce, although vacuum circuit breaker is equipped with air inflation nozzle, due to outdoor electricity especially from far-off regions
In cable feeder pillar and box-type substation, due to safeguarding and overhauling not in time, sulfur hexafluoride cannot be supplemented effectively, to lead
Insulation and arc extinction performance is caused to reduce, there are biggish security risks.
Utility model content
The utility model leads to arc extinguishing and insulation to solve existing vacuum circuit breaker due to sulfur hexafluoride low-temperature liquefaction
Reduced performance and there are security hidden troubles, and provide a kind of high-low pressure vacuum circuit breaker, the liquid under sulfur hexafluoride low temperature environment
After change can automatic adjustable pressure, guarantee arc-chutes in dynamic and static contact sulfur hexafluoride air pressure, guarantee dynamic and static contact
Between insulation and arc extinguishing ability, to eliminate safe hidden trouble.
In order to solve the technical problem, the technical scheme adopted by the utility model is
A kind of high-low pressure vacuum circuit breaker, including tubular arc-chutes are equipped with static contact and dynamic in the arc-chutes
Contact, the moving contact are connected with the catch bar for driving moving contact in arc extinguishing indoor moving, which is characterized in that the promotion
Bar is internally provided with the through hole passed through for electric wire, and the catch bar is set in arc-chutes through moving contact mounting blocks, goes out
It is disposed with compressed spring, first piston and second piston along the direction of moving contact mounting blocks to moving contact in arc chamber, is pushed away
Lever passes through first piston and second piston is connect with moving contact, connects between first piston and second piston through connecting rod is fixed
It connects.
It is filled with sulfur hexafluoride gas in space between the first piston and second piston, is offered in second piston
Airflow channel is also equipped with valve derived from the sulfur hexafluoride gas between first piston and second piston in second piston,
Thimble for Open valve is installed, thimble is mounted in arc-chutes through limited block in the arc-chutes.
The mounting groove for installing valve is provided in the second piston.
The valve includes the valve seat being mounted in mounting groove, and guide post, valve seat have been slidably and sealingly connected in the middle part of valve seat
On offer venthole, one end of guide post is connected with the valve block for opening and closing venthole, sets between valve block and valve seat
It sets and butterfly spring, the other end of guide post is equipped with the blind hole being mutually adapted with thimble.
Air inflation nozzle is installed on arc-chutes between limited block and static contact mounting blocks.
Compared with prior art, the utility model has the following beneficial effects:
High-low pressure vacuum circuit breaker provided by the utility model is filled with the sulfur hexafluoride of certain pressure intensity in use
After gas, compressed spring is compressed so that first piston and second piston keep a pressure balance, when sulfur hexafluoride gas is met
To after low-temperature liquefaction a part, compressed spring starts to reset, so that the gas compartment between moving contact and static contact reduces,
To guarantee that sulfur hexafluoride gas pressure fluctuates in a small range, to guarantee arc extinction performance and insulation performance, disappear
Except security risk.
Sulfur hexafluoride gas is filled between the utility model first piston and second piston, when the reset of compressed spring is transported
(illustrate to liquefy more serious, the pressure between dynamic and static contact is lower) when moving to limited block, thimble opens valve
Door, the higher gas of pressure between first piston and second piston, which is released out, carries out secondary supplement, to guarantee dynamic and static touching
Sulfur hexafluoride gas pressure between head.
The utility model can gone out by the sulfur hexafluoride gas between compressed spring and first piston and second piston
Sulfur hexafluoride gas pressure is automatically adjusted after now liquefying, achievees the purpose that automatic adjustment, guarantees arc extinction performance and insulation performance, this
Use of the utility model especially suitable for remote districts, substantially prolongs the period of staff's care and maintenance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the valve of the utility model and the connection schematic diagram of thimble；
Marked in the figure: 1, arc-chutes, 2, porcelain bushing shell, 3, connecting terminal, 4, moving contact, 5, static contact, 6, static contact installation
Block, 7, catch bar, 8, moving contact mounting blocks, 9, first piston, 10, second piston, 11, compressed spring, 12, connecting rod, 13, valve
Door, 14, limited block, 15, thimble, 16, mounting groove, 17, airflow channel, 18, valve seat, 19, venthole, 20, guide post, 21, valve
Piece, 22, butterfly spring.
Specific embodiment
Below with reference to embodiment, the utility model will be further described, and described embodiment is only that this is practical new
Type a part of the embodiment is not whole embodiment.Based on the embodiments of the present invention, the ordinary skill people of this field
Member's other embodiments used obtained without making creative work, belong to the protection model of the utility model
It encloses.
In conjunction with attached drawing, high-low pressure vacuum circuit breaker provided by the utility model, including tubular arc-chutes 1, it is described to go out
Static contact 5 and moving contact 4 are installed, the moving contact 4 is connected with for driving moving contact 4 to move in arc-chutes 1 in arc chamber 1
Catch bar 7, wherein catch bar 7 extends arc-chutes and is externally connected with operating mechanism, and operating mechanism belongs to prior art products, this
The technical staff in field can be appreciated and understood that details are not described herein, and operating mechanism controls catch bar 7, so that moving contact
Contact or end with static contact are opened；The upper end setting of arc-chutes 1 is connected with wiring on porcelain bushing shell 2 there are two hollow porcelain bushing shell 2
Terminal 3, the catch bar 7 are internally provided with the through hole passed through for electric wire, and the catch bar 7 is through moving contact mounting blocks 8
It is set in arc-chutes 1, the electric wire of connection connecting terminal 3 passes through porcelain bushing shell 2 and enters in arc-chutes 1, then passes through catch bar 7
Through hole connect with moving contact, static contact 5 is mounted in arc-chutes through static contact mounting blocks 6, connects another connecting terminal
Electric wire pass through another porcelain bushing shell 2 enter arc-chutes 1 in connect with static contact 5；In arc-chutes 1 along moving contact mounting blocks 8 to
The direction of moving contact 4 is disposed with compressed spring 11, first piston 9 and second piston 10, i other words, moving contact mounting blocks 8
Compressed spring 11 is installed between first piston 9, catch bar 7 passes through first piston 9 and second piston 10 and moving contact 4 connects
It connects, is fixedly connected between first piston 9 and second piston 10 through connecting rod 12.The utility model passes through setting first piston and the
Two pistons can guarantee the sealing of sulfur hexafluoride gas.Preferably, first piston and the outer wall of second piston be provided with for
Being internally provided with for the sealing ring that arc-chutes seal against each other, first piston and second piston is close for sealing against each other with catch bar
Seal.
High-low pressure vacuum circuit breaker provided by the utility model is filled with the sulfur hexafluoride of certain pressure intensity in use
After gas, compressed spring is compressed so that first piston and second piston keep a pressure balance, when sulfur hexafluoride gas is met
To after low-temperature liquefaction a part, compressed spring starts to reset, so that the gas compartment between moving contact and static contact reduces,
To guarantee that sulfur hexafluoride gas pressure fluctuates in a small range, to guarantee arc extinction performance and insulation performance, disappear
Except security risk.
Filled with sulfur hexafluoride gas, (preferential, first is living in space between the first piston 9 and second piston 10
The gas pressure intensity filled between plug and second piston) it is higher than the gas pressure intensity at dynamic static joint 4 and static contact 5, in second piston 10
Airflow channel 17 is offered, is also equipped in second piston 10 by the sulfur hexafluoride gas between first piston 9 and second piston 10
Valve 13 derived from body, the thimble 15 for Open valve 13 is equipped in the arc-chutes 1, and thimble 15 is installed through limited block 14
In arc-chutes 1.
Sulfur hexafluoride gas is filled between the utility model first piston and second piston, when the reset of compressed spring is transported
(illustrate to liquefy more serious, the pressure between dynamic and static contact is lower) when moving to limited block, thimble opens valve
Door, the higher gas of pressure between first piston and second piston, which is released out, carries out secondary supplement, to guarantee dynamic and static touching
Sulfur hexafluoride gas pressure between head.
Preferably, the mounting groove 16 for installing valve 13, valve and mounting groove 16 are provided in the second piston 10
Inner wall between be sealedly and fixedly connected.
As a kind of preferred mode of the utility model, the valve 13 includes the valve seat 18 being mounted in mounting groove 16,
The middle part of valve seat 18 has been slidably and sealingly connected with guide post 20, and venthole 19, one end connection of guide post 20 are offered on valve seat 18
There is the valve block 21 for opening and closing venthole 19, setting and butterfly spring 22, guide post 20 between valve block 21 and valve seat 18
The other end be equipped with the blind hole being mutually adapted with thimble 15.
For the ease of pouring for gas, inflation is installed on the arc-chutes 1 between limited block 14 and static contact mounting blocks 6
Mouth.
Claims (5)
1. a kind of high-low pressure vacuum circuit breaker, including tubular arc-chutes, static contact and dynamic touching are installed in the arc-chutes
Head, the moving contact are connected with the catch bar for driving moving contact in arc extinguishing indoor moving, which is characterized in that the catch bar
Be internally provided with the through hole passed through for electric wire, the catch bar is set in arc-chutes through moving contact mounting blocks, arc extinguishing
Interior is disposed with compressed spring, first piston and second piston along the direction of moving contact mounting blocks to moving contact, pushes
Bar passes through first piston and second piston is connect with moving contact, is fixedly connected between first piston and second piston through connecting rod.
2. high-low pressure vacuum circuit breaker according to claim 1, which is characterized in that the first piston and second piston it
Between space in be filled with sulfur hexafluoride gas, offer airflow channel in second piston, be also equipped in second piston by the
Valve derived from sulfur hexafluoride gas between one piston and second piston is equipped with for Open valve in the arc-chutes
Thimble, thimble are mounted in arc-chutes through limited block.
3. high-low pressure vacuum circuit breaker according to claim 2, which is characterized in that be provided with and be used in the second piston
The mounting groove of valve is installed.
4. high-low pressure vacuum circuit breaker according to claim 3, which is characterized in that the valve includes being mounted on mounting groove
Interior valve seat has been slidably and sealingly connected with guide post in the middle part of valve seat, venthole has been offered on valve seat, one end of guide post is connected with
For opening and closing the valve block of venthole, setting and butterfly spring, the other end of guide post are equipped between valve block and valve seat
The blind hole being mutually adapted with thimble.
5. the high-low pressure vacuum circuit breaker according to any one of claim 2-4, which is characterized in that limited block and static contact
Air inflation nozzle is installed on arc-chutes between mounting blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820659106.6U CN208240563U (en) | 2018-05-04 | 2018-05-04 | A kind of high-low pressure vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820659106.6U CN208240563U (en) | 2018-05-04 | 2018-05-04 | A kind of high-low pressure vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208240563U true CN208240563U (en) | 2018-12-14 |
Family
ID=64582622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820659106.6U Expired - Fee Related CN208240563U (en) | 2018-05-04 | 2018-05-04 | A kind of high-low pressure vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208240563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112185751A (en) * | 2020-08-24 | 2021-01-05 | 平高集团有限公司 | Circuit breaker and gas insulated switchgear using the same |
-
2018
- 2018-05-04 CN CN201820659106.6U patent/CN208240563U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112185751A (en) * | 2020-08-24 | 2021-01-05 | 平高集团有限公司 | Circuit breaker and gas insulated switchgear using the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181214 Termination date: 20210504 |