CN110277273A - A kind of on-Line Monitor Device and method of high-pressure vacuum breaker vacuum degree - Google Patents
A kind of on-Line Monitor Device and method of high-pressure vacuum breaker vacuum degree Download PDFInfo
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- CN110277273A CN110277273A CN201910671861.5A CN201910671861A CN110277273A CN 110277273 A CN110277273 A CN 110277273A CN 201910671861 A CN201910671861 A CN 201910671861A CN 110277273 A CN110277273 A CN 110277273A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000012544 monitoring process Methods 0.000 claims abstract description 48
- 239000013307 optical fiber Substances 0.000 claims abstract description 37
- 229910052751 metal Inorganic materials 0.000 claims abstract description 27
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- 150000002739 metals Chemical class 0.000 claims abstract description 27
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000003973 paint Substances 0.000 claims description 9
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 8
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- 239000005083 Zinc sulfide Substances 0.000 claims description 4
- 239000005030 aluminium foil Substances 0.000 claims description 4
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 4
- 229920000180 alkyd Polymers 0.000 claims description 3
- 239000002518 antifoaming agent Substances 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
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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
- H01H33/668—Means for obtaining or monitoring the vacuum
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- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses the on-Line Monitor Devices and method of a kind of high-pressure vacuum breaker vacuum degree, including vacuum interrupter, it further include Vacuum Balance chamber, optical fiber, it is separated between the Vacuum Balance chamber and vacuum interrupter by budget metals film, one end of the optical fiber is located at that Vacuum Balance is intracavitary, the other end is connected with monitoring unit, and the monitoring unit is for monitoring the light intensity that optical fiber transmits.The purpose of the present invention is to provide the on-Line Monitor Devices and method of a kind of high-pressure vacuum breaker vacuum degree, vacuum-degree monitoring to solve the problems, such as vacuum interrupter in high-pressure vacuum breaker in the prior art is complicated for operation, is difficult to real-time monitoring, realizes purpose that is simple, accurately being monitored on-line to the vacuum degree of vacuum interrupter.
Description
Technical field
The present invention relates to vacuum circuit breaker fields, and in particular to a kind of on-line monitoring dress of high-pressure vacuum breaker vacuum degree
It sets and method.
Background technique
Vacuum circuit breaker is to cut-off device in the extremely promising electric power of low pressure and middle pressure field, it be with vacuum for insulation and
The device for switching of arc quenching medium.Gas molecule is extremely rare in vacuum, and the chance that electron and molecule collides is few, therefore vacuum is disconnected
The dielectric strength of road device is very high.Vacuum circuit breaker has safe and reliable, service life length, maintenance mans compared with other types breaker
Work amount is small, the advantages that not polluting the environment.
Vacuum interrupter is the core of vacuum circuit breaker.In order to realize disjunction and the arc extinguishing of electric current, vacuum interrupter
Interior pressure is generally not more than 10-2Pa.Therefore, vacuum degree is to determine one of the principal element of break performance of vacuum interrupter,
The reduction of vacuum degree will directly affect the connecting-disconnecting function of vacuum circuit breaker, will lead to when serious its cut-off it is entirely ineffective.Therefore, exist
There is an urgent need to measure and record the vacuum degree of vacuum interrupter in operation for practical application area.
In practical application, the test method of vacuum level of vacuum arc-quenching chamber mainly include the following types:
(1) industrial frequency withstand voltage method: the test for non-dismount arc-extinguishing chamber, the vacuum level of vacuum arc-quenching chamber detection of vacuum circuit breaker
It is live generally to be sent out using industrial frequency withstand voltage, two contact of vacuum circuit breaker is exactly pulled to specified open away from the work being gradually increased between contact
Frequency voltage is if being resistant to voltage 1min, i.e., otherwise as unqualified it is believed that vacuum degree is qualified to specified value.Practice have shown that adopting
It is a kind of simple and effective method with the vacuum degree that industrial frequency withstand voltage method detects serious vacuum interrupter inferior, but in critical
The arc-chutes of state are then helpless.For the vacuum interrupter that two or more are used in series, industrial frequency withstand voltage method is uncomfortable
For checking the vacuum degree of series connection arc-chutes simultaneously.In addition, big, heavy for the pressure-resistant power frequency testing transformer volume tested,
It is inconvenient, and price, it is not that each power transmission and transformation unit has the ability to configure.
(2) observation: due to being frequently accompanied by electric arc color change and inside when vacuum interrupter internal vacuum reduces
Part oxidation, so can be with routine observation to the vacuum interrupter of glass shell.The parts surfaces such as the shielding case inside when normal
Color should be very bright, and what is issued in drop-out current is blue arc light；When vacuum degree seriously reduces, internal color will become
Must be gloomy, it will be seen that kermesinus arc light in drop-out current.This method is only applicable to glass shell vacuum interrupter once in a while
Qualitative examination.
(3) red as fire meter method: being detected using spark leak detector, and when detection moves spark leak detector along arc extinguishing chamber surface,
There is different luminous situations in the lower inside of its high-frequency electric field effect.The vacuum degree of vacuum interrupter is identified according to luminous color.
This method is easy to operate, but can only qualitatively be judged, glass tube vacuum arc-chutes are suitable for, and be easy by artificial because
It influences.
(4) getter color change determines: glass inside pipe wall evapotranspiring one layer of getter in vacuum interrupter manufacture.It should
On the one hand getter can maintain high vacuum with residual gas in adsorption tube, another aspect getter itself can indicate vacuum degree.
Maintenance personnel can with the naked eye judge vacuum degree quality according to getter color change.Likewise, this method is only applicable to pair
The qualitative examination of glass shell vacuum interrupter once in a while.
(5) magnetic control discharge method: for vacuum interrupter in the fabrication process, vacuum pressure is usually to use electric vacuum
Meter is to measure.After the completion of arc-chutes manufacture, the vacuum ionization ga(u)ge having thereon, which is regulated, to be just removed, and hereafter arc extinguishing is indoor true
Reciprocal of duty cycle commonly uses the magnetic control discharge method containing cylindrical magnet exciting coil to measure.Magnetic control discharge method is measurement finished product arc-chutes vacuum degree
One of better method and the currently the only preferable method for quantitative measuring of repeatability.Its principle is by the touching of vacuum interrupter
Head pulls open certain distance, applies a pulse voltage between contact, to generate a strong electrical field therebetween, while in arc extinguishing chamber contact
Between apply an axial high-intensity magnetic field again.The indoor electronics of arc extinguishing is spinned movement under the collective effect in strong electrical field and magnetic field at this time,
And collide ionization with residual gas molecule in arc-chutes, the ion for ionizing out forms ionic current in electric field.This from
Electron current is approximate with residual gas density directly proportional.Therefore by measurement ionic current, it can know the indoor vacuum degree of arc extinguishing.
But magnetic control discharge method cannot achieve on-line monitoring.
Other than above-mentioned common methods, for the detection of vacuum level of vacuum arc-quenching chamber, also there are as below methods in the prior art:
High-frequency discharge method, high-frequency current method, coupled capacitor method, electro-optical conversion method, ray method etc..However these existing vacuum extinctions
Vacuum measurement method in room is that service personnel is needed just to operate in maintenance, all cannot achieve the online prison of automation
It surveys.In the prior art, it also has tried to that pressure sensor device is arranged in vacuum extinction room, still, if pressure sensor device makes
Signal is transmitted with wired mode, signal wire passes through the very easy air-tightness for influencing vacuum interrupter when vacuum interrupter, if pressure
Force sensor uses wireless monitor (contactless) mode, and can there is a problem of what measurement was not allowed.
Summary of the invention
The purpose of the present invention is to provide the on-Line Monitor Devices and method of a kind of high-pressure vacuum breaker vacuum degree, with solution
Certainly the vacuum-degree monitoring of vacuum interrupter is complicated for operation in high-pressure vacuum breaker in the prior art, is difficult to asking for real-time monitoring
Topic realizes purpose that is simple, accurately being monitored on-line to the vacuum degree of vacuum interrupter.
The present invention is achieved through the following technical solutions:
A kind of on-Line Monitor Device of high-pressure vacuum breaker vacuum degree, including vacuum interrupter, further include Vacuum Balance
Chamber, optical fiber are separated between the Vacuum Balance chamber and vacuum interrupter by budget metals film, and one end of the optical fiber is located at true
Empty counter balance pocket is interior, the other end is connected with monitoring unit, and the monitoring unit is for monitoring the light intensity that optical fiber transmits.
For vacuum interrupter in high-pressure vacuum breaker in the prior art vacuum-degree monitoring it is complicated for operation, be difficult in real time
The problem of monitoring, the present invention propose a kind of on-Line Monitor Device of high-pressure vacuum breaker vacuum degree, set in vacuum circuit breaker
Vacuum Balance chamber is set, is budget metals film between Vacuum Balance chamber and vacuum interrupter, one end of optical fiber is located at Vacuum Balance chamber
The interior, other end is connected with monitoring unit, and the monitoring unit is worked as in vacuum interrupter for monitoring the light intensity that optical fiber transmits
When vacuum degree keeps stablizing, budget metals film is remained stationary, and is remained unchanged by the light intensity that optical fiber reaches monitoring unit, can
Judge that vacuum degree is good in vacuum extinction room.When vacuum interrupter leakage, vacuum degree reduce, budget metals both sides differential pressure of membrane changes
Become, budget metals film generates deformation under differential pressure action, necessarily changes to the reflection of light, reached at this time by optical fiber
The light intensity of monitoring unit then changes, and can judge that vacuum interrupter may be revealed, monitoring unit can be sounded an alarm and be mentioned
Show that staff carries out inspection confirmation.Present apparatus structure is simple, by the flexible deformation of budget metals film, borrow light intensity variation come
It realizes indirectly to the real-time monitoring of vacuum extinction indoor situations, overcomes and require staff in the prior art and examined periodically
The problem of vacuum degree of vacuum interrupter could being checked when repairing.In addition, the application due to optical fiber be across vacuum it is flat
Weigh chamber, will not with vacuum interrupter occur it is any directly contact, therefore compared to the prior art in need to be in vacuum interrupter
The mode of wall aperture threading transmission signal, avoids the interference to vacuum extinction chamber air-tightness, and optical fiber short-distance transmission light
The stability of line is high, can guarantee very excellent measurement accuracy.In addition, if the intracavitary light inadequate natural endowment of Vacuum Balance, this
Light source can also flexibly be arranged as needed and provide stable light for Vacuum Balance chamber by field technical staff.
Vacuum extinction outside setting sensing storehouse, the budget metals film, which will sense, is divided into pressure transmission chamber, true inside storehouse
Empty counter balance pocket, the pressure transmission chamber are connected to vacuum interrupter.The sensing storehouse preferably with the shell of vacuum interrupter one at
Type.
The monitoring unit can issue laser, and it is intracavitary that laser is transmitted through the fiber to Vacuum Balance.Monitoring unit passes through
Vacuum Balance is intracavitary and then form stable light source, and optical fiber is simultaneously as transmitting in this programme by laser stable being transferred to for optical fiber
The channel of light source and feedback light, monitoring unit can be with continuous emission excimer lasers, it also may be preferable for discontinuity transmitting laser.
The budget metals film is the aluminium foil that surface coats white paint.Surface coating white paint can be improved surface smoothness, benefit
In the reflection to light, the absorption to light is reduced.
The white paint includes the component of following parts by weight: 45~50 parts of alkyd resin, 4~6 parts of dispersing agent, and defoaming agent
0.2~0.5 part, 10~15 parts of zinc sulphide, 10~15 parts of barium sulfate, 25~30 parts of titanium dioxide, 30~40 parts of solvent.This formula
Middle titanium dioxide is used as auxiliary brightening agent, the paint enabled to as most important brightening agent, zinc sulphide and barium sulfate
Guarantee pure white, the absorption to light is further decreased, to reflect more light.In addition, a large amount of titanium dioxide in this programme
Addition, titanium dioxide always in the form of solia particle exist in white paint, be coated in aluminium foil surface after, aluminium can be conducive to
Foil surface forms diffusing reflection, and under the conditions of diffusing reflection, what budget metals film can be more stable when deformation occurs ensures optical fiber
The light of varying strength is received, thus under the conditions of avoiding budget metals film that mirror-reflection occurs, before and after the deformation of budget metals film
Intensity of illumination changes little situation and occurs at optical fiber.
The side wall of the Vacuum Balance chamber opens up groove, is separated between the groove and Vacuum Balance chamber by Transparent Parts, institute
It states and light source is set in groove.This programme provides the mode of light source for another kind for Vacuum Balance chamber.
The Transparent Parts are vacuum glass.Vacuum glass has excellent heat-insulating capability, can be avoided the heat of light source sending
It is intracavitary that amount enters Vacuum Balance.
A kind of on-line monitoring method of high-pressure vacuum breaker vacuum degree, comprising the following steps:
(a) airtight Vacuum Balance chamber is set, make between Vacuum Balance chamber and vacuum interrupter by budget metals film every
It opens；
(b) the intracavitary light intensity of monitoring Vacuum Balance: if the intracavitary light intensity of Vacuum Balance remains unchanged, judge vacuum interrupter
Normally；If the intracavitary light intensity of Vacuum Balance changes, judge that vacuum interrupter is revealed.
If vacuum interrupter leaks, the pressure of Vacuum Balance chamber and vacuum interrupter is uneven, causes budget metals
The reflective light intensity of film deformation, deformation front and back, budget metals film is different, and then can realize whether real-time monitoring arc-chutes vacuum lets out
Leakage.
The intracavitary light intensity of Vacuum Balance is by being inserted into the intracavitary fiber-optic monitoring of Vacuum Balance.Optical fiber has anti-electromagnetism and original
The performance of sub- radiation interference, the mechanical performance that diameter is thin, matter is soft, light-weight；And there is insulation, inductionless electric property and resistance to
Water, high temperature resistant, corrosion resistant chemical property etc., are resistant to the extreme condition of vacuum interrupter.
Light source is provided to Vacuum Balance chamber in monitoring process.
The light source is by optical fiber to the laser of the intracavitary transmission of Vacuum Balance.
Compared with prior art, the present invention having the following advantages and benefits:
1, the present invention a kind of on-Line Monitor Device and method of high-pressure vacuum breaker vacuum degree, structure and operation are extremely
Simply, it is realized indirectly by the flexible deformation of budget metals film, the variation of borrow light intensity to the reality of vacuum extinction indoor situations
When monitor, overcome and require staff in the prior art and the vacuum degree of vacuum interrupter could be carried out in periodic inspection
The problem of inspection, wireless real time on-line monitoring.
2, the present invention a kind of on-Line Monitor Device and method of high-pressure vacuum breaker vacuum degree, due to optical fiber be across
Vacuum Balance chamber, will not with vacuum interrupter occur it is any directly contact, therefore compared to the prior art in need to be in vacuum extinction
The mode of the inner wall aperture threading transmission signal of room, avoids the interference to vacuum extinction chamber air-tightness, and optical fiber short distance
The stability of transmission ray is high, can guarantee very excellent measurement accuracy.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the breaker overall schematic of the specific embodiment of the invention；
Fig. 2 is the schematic diagram of the specific embodiment of the invention；
Fig. 3 is the schematic diagram of pressure transmission chamber in the specific embodiment of the invention 3.
Label and corresponding parts title in attached drawing:
1- breaker operation mechanism, 2- vacuum interrupter, 3- sensing storehouse, 31- budget metals film, 32- Vacuum Balance chamber,
33- optical fiber, 34- pressure transmission chamber, 4- monitoring unit, 5- groove, 6- Transparent Parts, 7- light source.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1:
A kind of on-Line Monitor Device of high-pressure vacuum breaker vacuum degree as shown in Figures 1 and 2, including vacuum interrupter
2, further include Vacuum Balance chamber 32, optical fiber 33, passes through budget metals film 31 between the Vacuum Balance chamber 32 and vacuum interrupter 2
It separates, one end of the optical fiber 33 is located in Vacuum Balance chamber 32, the other end is connected with monitoring unit 4, and the monitoring unit 4 is used
In the light intensity that monitoring optical fiber 33 transmits.Setting sensing storehouse 3 on the outside of the vacuum interrupter 2, the budget metals film 31 will sensings
It is divided into pressure transmission chamber 34, Vacuum Balance chamber 32 inside storehouse 3, the pressure transmission chamber 34 is connected to vacuum interrupter 2.The monitoring unit 4
Laser can be issued, laser is transmitted in Vacuum Balance chamber 32 by optical fiber 33.
In the present embodiment, monitoring unit 4 is connect with optical fiber 33, and optical fiber 33 is connect with Vacuum Balance chamber 32, budget metals film
31 are located in vacuum interrupter 2, and Vacuum Balance chamber 32 is integrated with vacuum interrupter 2.
Laser is transferred in Vacuum Balance chamber 32 by monitoring unit 4 by optical fiber 33, and budget metals mould 31 is capable of reflecting light.
After the vacuum degree of breaker vacuum arc-chutes 2 leaks, the pressure of vacuum interrupter 2 is greater than the pressure in Vacuum Balance chamber 32
By force, the deformation of budget metals film 31 and the transmitting variation of light are caused, optical fiber 33 transports light to monitoring unit 4 again, can be according to light
Strong curve judges whether vacuum interrupter vacuum leak occurs.
Embodiment 2:
A kind of on-line monitoring method of high-pressure vacuum breaker vacuum degree, as shown in Figures 1 and 2, comprising the following steps:
(a) airtight Vacuum Balance chamber 32 is set, makes to pass through budget metals between Vacuum Balance chamber 32 and vacuum interrupter 2
Film 31 separates；
(b) it monitors the light intensity in Vacuum Balance chamber 32: if the light intensity in Vacuum Balance chamber 32 remains unchanged, judging that vacuum is gone out
Arc chamber 2 is normal；If the light intensity in Vacuum Balance chamber 32 changes, judge that vacuum interrupter 2 is revealed.
Wherein the light intensity in Vacuum Balance chamber 32 is monitored by the optical fiber 33 being inserted into Vacuum Balance chamber 32.Monitoring process
It is middle to provide light source to Vacuum Balance chamber 32.The light source is the laser transmitted by optical fiber 33 into Vacuum Balance chamber 32.
Embodiment 3:
As shown in figure 3, the present embodiment and the difference of embodiment 1 are: the side wall of the Vacuum Balance chamber 32 opens up groove 5,
It is separated between the groove 5 and Vacuum Balance chamber 32 by Transparent Parts 6, light source 7 is set in the groove 5.The Transparent Parts 6 are true
Empty glass.
Preferably, budget metals film 31 is the aluminium foil that surface coats white paint.The white paint includes the group of following parts by weight
Point: 45~50 parts of alkyd resin, 4~6 parts of dispersing agent, 0.2~0.5 part of defoaming agent, 10~15 parts of zinc sulphide, barium sulfate 10~15
Part, 25~30 parts of titanium dioxide, 30~40 parts of solvent.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of on-Line Monitor Device of high-pressure vacuum breaker vacuum degree, including vacuum interrupter (2), which is characterized in that also
Including Vacuum Balance chamber (32), optical fiber (33), pass through budget metals between the Vacuum Balance chamber (32) and vacuum interrupter (2)
Film (31) separates, and one end of the optical fiber (33) is located in Vacuum Balance chamber (32), the other end is connected with monitoring unit (4), institute
Monitoring unit (4) are stated for monitoring the light intensity that optical fiber (33) transmits.
2. a kind of on-Line Monitor Device of high-pressure vacuum breaker vacuum degree according to claim 1, which is characterized in that institute
Setting sensing storehouse (3) on the outside of vacuum interrupter (2) is stated, the budget metals film (31), which will sense inside storehouse (3), is divided into pressure transmission chamber
(34), Vacuum Balance chamber (32), the pressure transmission chamber (34) are connected to vacuum interrupter (2).
3. a kind of on-Line Monitor Device of high-pressure vacuum breaker vacuum degree according to claim 1, which is characterized in that institute
Laser can be issued by stating monitoring unit (4), and laser is transmitted in Vacuum Balance chamber (32) by optical fiber (33).
4. a kind of on-Line Monitor Device of high-pressure vacuum breaker vacuum degree according to claim 1, which is characterized in that institute
Stating budget metals film (31) is the aluminium foil that surface coats white paint.
5. a kind of on-Line Monitor Device of high-pressure vacuum breaker vacuum degree according to claim 4, which is characterized in that institute
State the component that white paint includes following parts by weight: 45~50 parts of alkyd resin, 4~6 parts of dispersing agent, 0.2~0.5 part of defoaming agent,
10~15 parts of zinc sulphide, 10~15 parts of barium sulfate, 25~30 parts of titanium dioxide, 30~40 parts of solvent.
6. a kind of on-Line Monitor Device of high-pressure vacuum breaker vacuum degree according to claim 1, which is characterized in that institute
The side wall for stating Vacuum Balance chamber (32) opens up groove (5), by Transparent Parts (6) between the groove (5) and Vacuum Balance chamber (32)
It separates, light source (7) is set in the groove (5).
7. a kind of on-line monitoring method of high-pressure vacuum breaker vacuum degree, which comprises the following steps:
(a) airtight Vacuum Balance chamber (32) is set, is made between Vacuum Balance chamber (32) and vacuum interrupter (2) through balance gold
Belong to film (31) to separate；
(b) it monitors the light intensity in Vacuum Balance chamber (32): if the light intensity in Vacuum Balance chamber (32) remains unchanged, judging that vacuum is gone out
Arc chamber (2) is normal；If the light intensity in Vacuum Balance chamber (32) changes, judge that vacuum interrupter (2) are revealed.
8. a kind of on-line monitoring method of high-pressure vacuum breaker vacuum degree according to claim 7, which is characterized in that true
Light intensity in empty counter balance pocket (32) is monitored by the optical fiber (33) being inserted into Vacuum Balance chamber (32).
9. a kind of on-line monitoring method of high-pressure vacuum breaker vacuum degree according to claim 8, which is characterized in that prison
Light source is provided to Vacuum Balance chamber (32) during survey.
10. a kind of on-line monitoring method of high-pressure vacuum breaker vacuum degree according to claim 9, which is characterized in that
The light source is the laser transmitted by optical fiber (33) into Vacuum Balance chamber (32).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910671861.5A CN110277273A (en) | 2019-07-24 | 2019-07-24 | A kind of on-Line Monitor Device and method of high-pressure vacuum breaker vacuum degree |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114530348A (en) * | 2022-03-16 | 2022-05-24 | 登高电气有限公司 | Insulating shell structure of arc extinguish chamber of vacuum circuit breaker |
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| CN209822553U (en) * | 2019-07-24 | 2019-12-20 | 四川电器集团股份有限公司 | Online monitoring device for vacuum degree of high-voltage vacuum circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114530348A (en) * | 2022-03-16 | 2022-05-24 | 登高电气有限公司 | Insulating shell structure of arc extinguish chamber of vacuum circuit breaker |
| CN114530348B (en) * | 2022-03-16 | 2022-08-12 | 登高电气有限公司 | Insulating shell structure of arc extinguish chamber of vacuum circuit breaker |
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