CN106328431B - Breaker hydraulic pressure exhaust apparatus - Google Patents
Breaker hydraulic pressure exhaust apparatus Download PDFInfo
- Publication number
- CN106328431B CN106328431B CN201610941865.7A CN201610941865A CN106328431B CN 106328431 B CN106328431 B CN 106328431B CN 201610941865 A CN201610941865 A CN 201610941865A CN 106328431 B CN106328431 B CN 106328431B
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- Prior art keywords
- hydraulic pressure
- exhaust
- piston
- montant
- channel
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 abstract description 5
- 241000273930 Brevoortia tyrannus Species 0.000 description 26
- 239000003921 oil Substances 0.000 description 22
- 238000001514 detection method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 230000000740 bleeding effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
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
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
- H01H33/34—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator hydraulic
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
Breaker hydraulic pressure exhaust apparatus, including hydraulic pressure bunker, the top setting exhaust gear of hydraulic pressure bunker and back-fire relief room；Exhaust gear includes valve body, and piston channel and exhaust passage are set in valve body, piston rod is set in piston channel, the lower end installation piston of piston rod, the upper end is equipped with the first thrust spring；The middle part of exhaust passage sets exhaust chamber, sets columnar montant in exhaust chamber, montant can block exhaust passage；Lateral interface channel between exhaust chamber and piston channel is set, motion bar is set in interface channel, one end of motion bar is connect with montant, and the other end is provided with curved portion, and piston rod offers the arc groove coordinated with curved portion；The second lateral thrust spring is provided between montant and exhaust chamber；The upper end outlet of exhaust passage is provided with communicating pipe with back-fire relief room air inlet, is filled with water in back-fire relief room, the lower end of communicating pipe is stretched into below the water surface.The oil gas gathered in hydraulic pressure bunker can be realized automatic exhaust by the present invention, simple in structure, have a safety feature.
Description
Technical field
The present invention relates to a kind of automatic exhaust devices, belong to field of power more particularly to a kind of breaker hydraulic pressure row
Device of air.
Background technology
High-voltage circuitbreaker is also referred to as high-voltage switch gear, and control action is played in high-tension circuit, cuts off or closes in normal operation
The no-load current and load current in high-tension circuit are closed, disconnects electricity during fault condition rapidly under the action of protective relaying device
Road.The working condition of breaker namely its be opened or closed action be by he actuating mechanism control, therefore, from action machine
It can be divided on the medium that structure uses：Oil-break, sulfur hexafluoride breaker, compressed-air circuit breaker, vacuum circuit breaker etc..It is existing
To use hydraulic oil in the majority in some oil-breaks, with the work of the pump housing in operational process, in the oil pump low pressure of hydraulic system
The inside of part and partial high pressure part can gather certain gas.Due to the presence of gas, oil pump cannot be effectively by liquid
Pressure oil is input to high-pressure section from low-pressure section, leads to oil pump continuous service, but pressure can not raised situation, will danger when serious
And the cut-out job security of possible breaker.
Chinese patent (Authorization Notice No. CN 204946842U) discloses a kind of " breaker Intelligent exhaust device ", including
Processing module that detection module, input terminal are connect with the output terminal of the detection module and input terminal are defeated with the processing module
The air bleeding valve of outlet connection, the detection module are used for oil pump oil level detection in Hydraulic Mechanism of Circuit-breaker, the processing module root
Control the air bleeding valve that the oil pump is exhausted according to the output signal of the detection module；By in Hydraulic Mechanism of Circuit-breaker
Middle setting oil pump liquid level detection module and the air bleeding valve that oil pump is exhausted, can be vented automatically, and it is artificial fixed to avoid
The blindness manual exhaust of phase reduces service personnel and contacts high-risk environment and the number of equipment, can greatly reduce major accident
Accident rate, that is, improve the scientific and technological content of the job security of equipment, reliability and power equipment, and substantially increase labour
Productivity.The utility model system is complex, during exhaust, since breaker is worked under various electric circumstances,
There are the risks of accidental ignition for the hydraulic pressure oil gas of direct emission, jeopardize the safety of equipment.
Invention content
The present invention provides a kind of breaker hydraulic pressure exhaust apparatus, for solving the problems of the prior art.
In order to achieve the object of the present invention, using following technical scheme：
Breaker hydraulic pressure exhaust apparatus includes the hydraulic pressure bunker of front setting liquid level display window, the bottom of hydraulic pressure bunker
Inlet tube and outlet tube, internal setting liquid-level floater, the top setting exhaust gear of the hydraulic pressure bunker and back-fire relief room are set,
Back-fire relief room is located at the side of exhaust gear；The exhaust gear includes valve body, and the interior setting of valve body is vertical to be connected with hydraulic pressure bunker
Piston channel and exhaust passage, setting piston rod in the piston channel, the lower end installation piston of piston rod, the upper end is equipped with
First thrust spring, the first thrust spring upper end are fixedly connected with the valve body；The middle part setting exhaust chamber of the exhaust passage, exhaust
Interior sets columnar montant, and montant can block exhaust passage；Lateral connection is set between the exhaust chamber and piston channel
Channel, the interior setting motion bar of interface channel, one end of motion bar are connect with montant, and the other end is provided with curved portion, the work
Stopper rod offers the arc groove coordinated with curved portion；The second lateral thrust bullet is provided between the montant and exhaust chamber
Spring, the second thrust spring are located at the opposite side that montant is connect with motion bar；The upper end outlet of the exhaust passage and back-fire relief room into
Gas port is provided with communicating pipe, is filled with water in back-fire relief room, the lower end of communicating pipe stretches into the water surface hereinafter, the exhaust outlet of the back-fire relief room
Hose is diffused in upper installation.
In order to further achieve the object of the present invention, following technical scheme can also be used：
What breaker hydraulic pressure exhaust apparatus as described above, the upper end setting of the piston channel and valve body were detachably fixed
First sealing-plug, the upper end of the first thrust spring are connect with the first sealing-plug.
Breaker hydraulic pressure exhaust apparatus as described above, second thrust spring are provided with 2 sets, are separately positioned on montant
Upper and lower part.
Breaker hydraulic pressure exhaust apparatus as described above, one end of second thrust spring is connect with montant, another
End is fixed with the second sealing-plug, and second sealing-plug is mounted in the lateral screw hole that valve body side opens up, lateral screw hole perforation
Between exhaust chamber and valve body.
Breaker hydraulic pressure exhaust apparatus as described above, the montant middle part setting annular groove, annular groove and motion bar
End coordinates.
Breaker hydraulic pressure exhaust apparatus as described above, the arc groove are limiting slot structure, the piston channel
Lower end setting tightening channel, piston are located at the top of tightening channel, and the sectional area of piston is more than the area of tightening channel.
Breaker hydraulic pressure exhaust apparatus as described above, is equipped with shunt valve, inlet tube between the inlet tube and outlet tube
It is upper that first valve is set between shunt valve and hydraulic pressure bunker, the is set on outlet tube between shunt valve and hydraulic pressure bunker
Three valves set the second valve on shunt valve.
Beneficial effects of the present invention：
1st, the oil gas gathered in hydraulic pressure bunker can be realized automatic exhaust by breaker hydraulic pressure exhaust apparatus of the present invention, i.e., in product
When poly- oil-air pressure increases, using the piston in piston channel and piston rod upward sliding, motion bar movement is pushed to control
Montant opens the exhaust passage in exhaust chamber, is brought out so as to fulfill the oil gas in hydraulic pressure bunker by exhaust passage；With oil
It is arranged outside gas, the pressure reduction of hydraulic pressure bunker, piston and piston rod slide downward, motion bar set back, and montant will be in exhaust chamber
Exhaust passage close.Communicating pipe is set in the upper end outlet of exhaust passage, the oil gas of discharge can be introduced and hindered using communicating pipe
The indoor water surface of fire so as to fulfill back-fire relief of the hydraulic pressure bunker under electrical operating conditions hereinafter, be isolated, and using on back-fire relief room
External release can be led to by diffusing hose.
2nd, it is vented use automatically in order to adapt to the hydraulic pressure of different breakers, is provided in the upper end of piston channel inner piston rod
First thrust spring and the first sealing-plug can adjust pressure to the first thrust spring by screwing or loosening the first sealing-plug
Power, so as to complete the setting of exhaust of oil pressure in hydraulic pressure bunker, easy to use and management；Similarly, it is indoor to be arranged on exhaust
Second thrust spring can also play similar exhaust of oil pressure setting and managerial role, in addition to this, pass through the first sealing
Plug, the second sealing-plug install the first thrust spring, the second thrust spring, convenient for safeguarding and replacing；Second thrust spring is provided with 2
Set respectively positioned at the upper and lower part of montant, makes montant relatively stable when sliding, can simultaneously turn off exhaust passage.
3rd, the tightening channel of piston channel lower part setting, plays the role of limiting when piston moves down, avoid the occurrence of under piston
Slip over more, to cause motion bar that can not reset failures；And be arranged to the arc groove of piston rod to limit slot structure, it can improve
Motion bar curved portion and the stability of arc groove cooperation, ensure that piston rod working performance is accurate.
4th, design principle of the present invention it is reliable, it is simple in structure, have a safety feature, have very strong practicability and popularization and application
Value.
Description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is another status diagram of Fig. 1.
Reference numeral：1- hydraulic pressure bunkers, 2- inlet tubes, 3- outlet tubes, 4- floating balls, 5- valve bodies, 6- piston channels, 7- exhausts
Channel, 8- piston rods, 9- pistons, the first thrust springs of 10-, 11- exhaust chambers, 12- montants, 13- motion bars, 14- curved portions,
15- arc grooves, the second thrust springs of 16-, 17- communicating pipes, 18- water, 19- diffuse hose, the first sealing-plugs of 20-, 21- second
Sealing-plug, 22- annular grooves, 23- tightening channels, 24- shunt valves, the first valves of 25-, 26- third valves, the second valves of 27-.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.
As shown in Figure 1 and Figure 2, a kind of breaker hydraulic pressure exhaust apparatus of the present embodiment sets liquid level display window including front
Hydraulic pressure bunker 1, the bottom setting inlet tube 2 and outlet tube 3 of hydraulic pressure bunker 1, internal setting liquid-level floater 4, hydraulic pressure bunker 1
Top setting exhaust gear and back-fire relief room, back-fire relief room be located at the side of exhaust gear；Exhaust gear includes valve body 5, in valve body 5
Vertical 9 channel 6 of piston connected with hydraulic pressure bunker 1 of setting and exhaust passage 7,9 channel of piston, 6 interior setting piston rod 8, piston
The lower end installation piston 9 of bar 8, the upper end are equipped with the first thrust spring 10, and 10 upper end of the first thrust spring is fixed with valve body 5 to be connected
It connects；The middle part of exhaust passage 7 sets exhaust chamber 11, columnar montant 12 is set in exhaust chamber 11, it is logical that montant 12 can block exhaust
Road 7；Lateral interface channel between 9 channel 6 of exhaust chamber 11 and piston is set, motion bar 13, motion bar are set in interface channel
13 one end is connect with montant 12, and the other end is provided with curved portion 14, and piston rod 8 offers the arc coordinated with curved portion 14
Groove 15；The second lateral thrust spring 16 is provided between montant 12 and exhaust chamber 11, the second thrust spring 16 is located at montant
12 opposite side with being flexibly connected；The upper end outlet of exhaust passage 7 and back-fire relief room air inlet are provided with communicating pipe 17, in back-fire relief room
Filled with water 18, the lower end of communicating pipe 17 stretches into the water surface hereinafter, hose 19 is diffused in installation on the exhaust outlet of back-fire relief room.
Specifically, breaker hydraulic pressure exhaust apparatus disclosed in the present embodiment, Fig. 1 is the state that the present apparatus closes exhaust,
Fig. 2 is the state that the present apparatus opens exhaust.In use, as the oil-air pressure gathered in hydraulic pressure bunker 1 increases, due to piston 9
Channel 6, exhaust passage 7 are connected with hydraulic pressure bunker 1, and oil gas can push up piston 9 and piston rod 8 in 9 channel 6 of piston
It is dynamic, at this point, being limited in due to motion bar 13 in lateral interface channel, it can only laterally move, therefore, with piston rod 8
It moves up, the curved portion 14 of motion bar 13 is detached with the arc groove 15 of piston rod 8, and drives motion bar 13 to 7 side of exhaust passage
It is mobile, so as to which montant 12 is pushed to open the exhaust passage 7 of exhaust chamber 11, realize that the oil gas in hydraulic pressure bunker 1 is discharged；
The upper end outlet setting communicating pipe 17 of exhaust passage 7 oil gas of discharge can be introduced the indoor water surface of back-fire relief using communicating pipe 17
Hereinafter, so as to fulfill hydraulic pressure bunker 1 under electrical operating conditions back-fire relief isolation, and using on back-fire relief room diffuse hose 19 can
To lead to external release；With being arranged outside oil gas, the oil-air pressure in hydraulic pressure bunker 1 reduces, and the first thrust spring 10 can be downward
Piston rod 8 and piston 9 is pushed to slide, meanwhile, the second thrust spring 16 pushes montant 12 to be moved to 9 channel of piston, 6 side, works as activity
Arc groove 15 on bar 13 is moved down complete cooperation with the curved portion of motion bar 13 14 after, montant 12 is by the exhaust in exhaust chamber 11
Channel 7 is closed, so as to complete a whole set of exhaust process of hydraulic pressure bunker 1.
As shown in Figure 1, the first sealing that setting is detachably fixed with valve body 5 in the upper end of 9 channel 6 of piston in the present embodiment
Plug 20, the upper end of the first thrust spring 10 is connect with the first sealing-plug 20.In order to which the hydraulic pressure for adapting to different breakers is vented automatically
Use, the upper end of 9 channel of piston, 6 inner piston rod 8 be provided with the first thrust spring 10 and the first sealing-plug 20, by screwing or
Pressure to the first thrust spring 10 can be adjusted by loosening the first sealing-plug 20, so as to complete exhaust of oil pressure in hydraulic pressure bunker 1
The setting of power, easy to use and management
As described in Figure 1, second thrust spring 16 of the present embodiment is provided with 2 sets, be separately positioned on montant 12 top and
Lower part.It is similar with the first thrust spring 10 set on 9 channel 6 of piston, the second thrust spring 16 being arranged in exhaust chamber 11
The setting of exhaust of oil pressure and managerial role can also be played.
Further, it is another as shown in Figure 1, one end of the second thrust spring 16 is connect with montant 12 in the present embodiment
End is fixed with the second sealing-plug 21, and the second sealing-plug 21 is mounted in the lateral screw hole that 5 side of valve body opens up, lateral screw hole perforation
Between exhaust chamber 11 and valve body 5.First thrust spring 10, the second thrust are installed by the first sealing-plug 20, the second sealing-plug 21
Spring 16, convenient for safeguarding and replacing；Second thrust spring 16 is provided with 2 sets, respectively positioned at the upper and lower part of montant 12, makes to erect
Bar 12 is relatively stable when sliding, and can simultaneously turn off exhaust passage 7.
As shown in Figure 1, the present embodiment sets annular groove 22 at 12 middle part of montant, annular groove 22 and the end of motion bar 13 are matched
It closes.Montant 12 using annular groove 22 can be fastened on to the end of motion bar 13, avoid shaking, keep montant 12 to exhaust passage 7
The stability being turned on and off.
As shown in Fig. 2, the arc groove 15 in the present embodiment is limiting slot structure, the lower end setting tightening of 9 channel 6 of piston
Channel 23, piston 9 are located at the top of tightening channel 23, and the sectional area of piston 9 is more than the area of tightening channel 23.9 channel 6 of piston
The tightening channel 23 of lower part setting, plays the role of limiting when piston 9 moves down, avoids the occurrence of piston 9 and glide excessively, lead to activity
The failure that bar 13 can not reset；And be arranged to the arc groove 15 of piston rod 8 to limit slot structure, 13 arc of motion bar can be improved
Shape portion 14 and the stability of arc groove cooperation, ensure that 8 working performance of piston rod is accurate.
As shown in Figure 1, the present embodiment is equipped with shunt valve 24 between inlet tube 2 and outlet tube 3, it is located at side on inlet tube 2
First valve 25 between road pipe 24 and hydraulic pressure bunker 1 is set, is set between shunt valve 24 and hydraulic pressure bunker 1 on outlet tube 3
Third valve 26 sets the second valve 27 on shunt valve 24.It ought not need to using the exhaust apparatus of the present invention or to hydraulic oil
When storehouse 1 carries out repair and maintenance, hydraulic pressure bunker 1 can be separated by the first valve 25 and third valve 26, it is easy to use and cut
It changes.
The technology contents of the not detailed description of the present invention are known technology.
Claims (7)
1. breaker hydraulic pressure exhaust apparatus includes the hydraulic pressure bunker of front setting liquid level display window, the bottom of hydraulic pressure bunker is set
Put inlet tube and outlet tube, the inside setting liquid-level floater of hydraulic pressure bunker, which is characterized in that the top setting of the hydraulic pressure bunker
Exhaust gear and back-fire relief room, back-fire relief room are located at the side of exhaust gear；The exhaust gear includes valve body, and setting is vertical in valve body
The piston channel and exhaust passage that are connected with hydraulic pressure bunker, setting piston rod in the piston channel, the lower end peace of piston rod
Piston is filled, the upper end of piston rod is equipped with the first thrust spring, and the first thrust spring upper end is fixedly connected with the valve body；The exhaust is logical
The middle part in road sets exhaust chamber, sets columnar montant in exhaust chamber, montant can block exhaust passage；The exhaust chamber and piston
Lateral interface channel between channel is set, motion bar is set in interface channel, one end of motion bar is connect with montant, another
End is provided with curved portion, and the piston rod offers the arc groove coordinated with curved portion；It is set between the montant and exhaust chamber
The second lateral thrust spring is equipped with, the second thrust spring is located at the opposite side that montant is connect with motion bar；The exhaust passage
Upper end outlet and back-fire relief room air inlet be provided with communicating pipe, be filled with water in back-fire relief room, the lower end of communicating pipe stretch into the water surface with
Under, it is installed on the exhaust outlet of the back-fire relief room and diffuses hose.
2. breaker hydraulic pressure exhaust apparatus according to claim 1, which is characterized in that the upper end setting of the piston channel
The first sealing-plug being detachably fixed with valve body, the upper end of the first thrust spring are connect with the first sealing-plug.
3. breaker hydraulic pressure exhaust apparatus according to claim 1, which is characterized in that second thrust spring is provided with
2 sets, it is separately positioned on the upper and lower part of montant.
4. breaker hydraulic pressure exhaust apparatus according to claim 3, which is characterized in that one end of second thrust spring
It is connect with montant, the other end is fixed with the second sealing-plug, and second sealing-plug is mounted on the lateral spiral shell that valve body side opens up
In hole, between lateral screw hole perforation exhaust chamber and valve body.
5. breaker hydraulic pressure exhaust apparatus according to claim 1, which is characterized in that setting annular in the middle part of the montant
The end cooperation of slot, annular groove and motion bar.
6. breaker hydraulic pressure exhaust apparatus according to claim 1, which is characterized in that the arc groove is limiting slot knot
Structure, the lower end setting tightening channel of the piston channel, piston are located at the top of tightening channel, and the sectional area of piston is more than tightening
The area of channel.
7. breaker hydraulic pressure exhaust apparatus according to claim 1, which is characterized in that between the inlet tube and outlet tube
Equipped with shunt valve, the first valve is set on inlet tube between shunt valve and hydraulic pressure bunker, be located on outlet tube shunt valve with
Third valve between hydraulic pressure bunker is set, the second valve is set on shunt valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610941865.7A CN106328431B (en) | 2016-10-31 | 2016-10-31 | Breaker hydraulic pressure exhaust apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610941865.7A CN106328431B (en) | 2016-10-31 | 2016-10-31 | Breaker hydraulic pressure exhaust apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106328431A CN106328431A (en) | 2017-01-11 |
| CN106328431B true CN106328431B (en) | 2018-07-03 |
Family
ID=57819420
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610941865.7A Active CN106328431B (en) | 2016-10-31 | 2016-10-31 | Breaker hydraulic pressure exhaust apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106328431B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203906451U (en) * | 2014-05-07 | 2014-10-29 | 国家电网公司 | Automatic exhaust warning device for breaker hydraulic mechanism |
| CN204204729U (en) * | 2014-09-22 | 2015-03-11 | 贵阳供电局 | Power circuit breaker hydraulic mechanism hydraulic oil depassing unit |
| CN204946842U (en) * | 2015-10-09 | 2016-01-06 | 国家电网公司 | Circuit breaker Intelligent exhaust device |
| CN105914060A (en) * | 2016-05-10 | 2016-08-31 | 国网山东省电力公司聊城供电公司 | Breaker hydraulic mechanism automatic gas relief device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3246588B2 (en) * | 1995-05-23 | 2002-01-15 | 富士電機株式会社 | Arc gas discharge device of circuit breaker |
-
2016
- 2016-10-31 CN CN201610941865.7A patent/CN106328431B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203906451U (en) * | 2014-05-07 | 2014-10-29 | 国家电网公司 | Automatic exhaust warning device for breaker hydraulic mechanism |
| CN204204729U (en) * | 2014-09-22 | 2015-03-11 | 贵阳供电局 | Power circuit breaker hydraulic mechanism hydraulic oil depassing unit |
| CN204946842U (en) * | 2015-10-09 | 2016-01-06 | 国家电网公司 | Circuit breaker Intelligent exhaust device |
| CN105914060A (en) * | 2016-05-10 | 2016-08-31 | 国网山东省电力公司聊城供电公司 | Breaker hydraulic mechanism automatic gas relief device |
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| Publication number | Publication date |
|---|---|
| CN106328431A (en) | 2017-01-11 |
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