CN201549430U - Gas filling tool for SF6 breaker - Google Patents
Gas filling tool for SF6 breaker Download PDFInfo
- Publication number
- CN201549430U CN201549430U CN2009200906788U CN200920090678U CN201549430U CN 201549430 U CN201549430 U CN 201549430U CN 2009200906788 U CN2009200906788 U CN 2009200906788U CN 200920090678 U CN200920090678 U CN 200920090678U CN 201549430 U CN201549430 U CN 201549430U
- Authority
- CN
- China
- Prior art keywords
- pressure
- breaker
- gas filling
- reducing valve
- 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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- Circuit Breakers (AREA)
Abstract
A gas filling tool for an SF6 breaker belongs to the field of power systems. The tool comprises a pressure reducing valve and a gas filling head, wherein an overpressure releasing device is arranged between the pressure reducing valve and the head, and the overpressure releasing device is provided with a precision pressure gauge. In the utility model, as the overpressure releasing device and the precision pressure gauge are arranged between the pressure reducing valve and the gas filling head of the SF6 breaker, the pressure of the breaker can be displayed precisely in the gas filling process of the SF6 breaker, thus avoiding overcharging, and saving the SF6 gas; and when the internal pressure of the breaker is extremely high (density and electric appliance indication fails or internal fault occurs), or the pressure reducing valve of an SF6 gas bottle fails and the pressure is higher than 0.8MPa during gas filling, the gas filling tool is started, and the high pressure is released by the overpressure releasing device, thus being capable of effectively protecting the breaker and the personnel safety of workers.
Description
Technical field
The utility model belongs to field of power, is specifically related to a kind of SF
6The circuit breaker inflatable tool.
Background technology
Circuit breaker is high-voltage switch gear again; it is one of visual plant of electric substation; it not only can cut off no-load current and load current with the closed high circuit; and when system breaks down; it and protective device, automatics match, and promptly excise fault current, to reduce the power failure scope; the accident that prevents enlarges, and guarantees system safety operation.In the middle of the electric power system primary equipment, primary cut-out is only second to the large scale electrical power unit of generator and transformer, and the quantity that needs comes before the two with the scale that investment is installed.SF
6Circuit breaker is a kind of in the primary cut-out, at present, and SF
6The inflatable tool of circuit breaker is formed by pressure-reducing valve and pneumatic head, and therefore not significantly accurately indication exists deficiencies such as misregister, coefficient of safety are low.
The utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of coefficient of safety high SF
6The circuit breaker inflatable tool.
For achieving the above object, the technical solution adopted in the utility model is as follows:
SF of the present utility model
6The circuit breaker inflatable tool comprises pressure-reducing valve and pneumatic head, is provided with overpressure release means between pressure-reducing valve and pneumatic head, is provided with precision pressure gauge on overpressure release means.
Described overpressure release means comprises valve body, ease air drain, escape vents, ease gas movable piston and spring, one end of valve body is provided with the ease air drain, on the ease air drain, be provided with at least one escape vents, be arranged with spring and ease gas movable piston in the ease air drain, one end of spring is connected with draw ring, and the other end and piston end headgear connect.Be arranged with sealing ring at piston-rod end.Push rod end at draw ring is arranged with sealing ring.
Overpressure release means in the utility model can also adopt existing various excess pressure release, overvoltage protection valve etc.
Because the utility model is at SF
6Be provided with overpressure release means and precision pressure gauge between the pressure-reducing valve of circuit breaker inflatable tool and the pneumatic head, therefore giving SF
6Can accurately show the pressure of circuit breaker in the process of circuit breaker inflation, avoid overcharging, save SF
6Gas; Circuit breaker internal pressure high unusually (density and the malfunctioning or internal fault of electrical equipment indication) or SF when inflation
6The malfunctioning pressure of gas cylinder pressure-reducing valve starts when being higher than 0.8Mpa, by overpressure release means original text pressure is discharged, effectively protective circuit breaker and staff's personal safety.
Description of drawings
Fig. 1 is SF of the present utility model
6Circuit breaker inflatable tool user mode schematic diagram;
Fig. 2 is SF of the present utility model
6The structural representation of the overpressure release means of circuit breaker inflatable tool.
Embodiment
As shown in Figure 1, SF of the present utility model
6The circuit breaker inflatable tool comprises pressure-reducing valve 2 and pneumatic head 5, pressure-reducing valve 2 and SF
6Gas cylinder 1 connects pneumatic head 5 and SF
6 Circuit breaker 6 connects.Between pressure-reducing valve 2 and pneumatic head 5, be provided with overpressure release means 3, on overpressure release means 3, be provided with precision pressure gauge 4.
As shown in Figure 2, described overpressure release means comprises valve body 15, ease air drain 12, escape vents 13, ease gas movable piston 11 and spring 10, one end of valve body 15 is provided with ease air drain 12, on ease air drain 12, be provided with at least one escape vents 13, be arranged with spring 10 and ease gas movable piston 11 in the ease air drain 12, one end of spring 10 is connected with push rod 9, the other end and piston 11 termination sockets.The other end of push rod is provided with handle 7, is arranged with sealing ring 14 at piston-rod end.Be arranged with sealing ring 8 at push rod 9 ends.
Operation principle of the present utility model is as follows:
When needs are given SF
6During the circuit breaker inflation, with the pressure-reducing valve 2 and the SF of inflatable tool
6Gas cylinder 1 connects pneumatic head 5 and SF
6 Circuit breaker 6 connects, and realizes SF
6The inflation of circuit breaker.Precision pressure gauge 4 shows SF
6The pressure of circuit breaker 6, when pressure was higher than 0.8Mpa, driving handle, the push rod length of spring compressed of exerting pressure promoted ease gas movable piston 11, made the end of ease gas movable piston 11 break away from sealing ring 14, SF
6Gas leads to ease air drain 12, by escape vents 13 high pressure is discharged; When pressure was lower than 0.8Mpa, the pulling handle resetted piston 11, movable piston 11 terminal and sealing ring 14 sealings.
Claims (4)
1. SF
6The circuit breaker inflatable tool comprises pressure-reducing valve and pneumatic head, it is characterized in that: be provided with overpressure release means between pressure-reducing valve and pneumatic head, be provided with precision pressure gauge on overpressure release means.
2. SF according to claim 1
6The circuit breaker inflatable tool, it is characterized in that: described overpressure release means comprises valve body, ease air drain, escape vents, ease gas movable piston and spring, one end of valve body is provided with the ease air drain, on the ease air drain, be provided with at least one escape vents, be arranged with spring and ease gas movable piston in the ease air drain, one end of spring is connected with push rod, and the other end and piston end headgear connect.
3. SF according to claim 2
6The circuit breaker inflatable tool is characterized in that: be arranged with sealing ring at piston-rod end.
4. SF according to claim 2
6The circuit breaker inflatable tool is characterized in that: the push rod end at draw ring is arranged with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200906788U CN201549430U (en) | 2009-06-04 | 2009-06-04 | Gas filling tool for SF6 breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200906788U CN201549430U (en) | 2009-06-04 | 2009-06-04 | Gas filling tool for SF6 breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201549430U true CN201549430U (en) | 2010-08-11 |
Family
ID=42604609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200906788U Expired - Fee Related CN201549430U (en) | 2009-06-04 | 2009-06-04 | Gas filling tool for SF6 breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201549430U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745873A (en) * | 2014-01-28 | 2014-04-23 | 国家电网公司 | Electrical SF6 circuit-breaker electrified intelligent gas supplement unit and gas supplement method |
-
2009
- 2009-06-04 CN CN2009200906788U patent/CN201549430U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745873A (en) * | 2014-01-28 | 2014-04-23 | 国家电网公司 | Electrical SF6 circuit-breaker electrified intelligent gas supplement unit and gas supplement method |
| CN103745873B (en) * | 2014-01-28 | 2015-10-14 | 国家电网公司 | A kind of electric power charged intelligent making-up air device of SF6 circuit breaker and supplementing method for air thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20180604 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |