CN107895670B - A kind of SF6Breaker low pressure latch-up protection device - Google Patents
A kind of SF6Breaker low pressure latch-up protection device Download PDFInfo
- Publication number
- CN107895670B CN107895670B CN201611084621.8A CN201611084621A CN107895670B CN 107895670 B CN107895670 B CN 107895670B CN 201611084621 A CN201611084621 A CN 201611084621A CN 107895670 B CN107895670 B CN 107895670B
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- Prior art keywords
- separating brake
- pull rod
- cylinder
- breaker
- slide closure
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Classifications
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- 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
- H01H33/46—Interlocking mechanisms
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Distribution Board (AREA)
Abstract
The invention discloses a kind of SF6Breaker low pressure latch-up protection device, including air cylinder device, link gearing and separating brake rod assembly, it is characterized by: the air cylinder device is vertically installed on supporting plate and is connected to the sulphur hexafloride circuit breaker ontology in outside by gas circuit, the link gearing is flexibly connected with the cylinder connecting rod at the top of air cylinder device, the cylinder connecting rod can drive the slide closure of link gearing to realize left right horizontal movement, slide closure horizontal movement to the left is able to achieve the clamping function to move up and down to separating brake rod assembly, it is hinged with manipulation connecting lever top at the top of the separating brake rod assembly, the separating brake and feed motion of breaker are realized by the linkage of the handle of output shaft and breaker in the manipulation connecting lever bottom, the link gearing and separating brake rod assembly are installed on side cabinet.Cylinder main body internal diameter of the invention is Φ 27mm, deep 63mm, and has the advantages that precise control, safety are good and widely applicable.
Description
Technical field
The present invention relates to a kind of protection device for circuit breaker, especially a kind of SF6Breaker low pressure latch-up protection device.
Background technique
The advantages that ring network cabinet is good, safe and reliable, cost performance is high due to power supply performance, each urban cells, heavy construction,
It has been obtained in the supply network of industrial enterprise etc. commonly used.In existing ring network cabinet, it will usually be provided with gas-insulated knot
Structure, the gas-insulated mechanism refer to insulating gas (air, SF that certain pressure is filled in ring network cabinet6Gas), to guarantee
The insulating capacity and arc extinguishing ability of ring network cabinet.Atmospheric pressure value and the insulating capacity and the direct phase of arc extinguishing ability of ring network cabinet in ring network cabinet
It closes, but when the air pressure is less than safety value, since insulating capacity and arc extinguishing ability significantly reduce, staff can be made to operate looped network
The security risk of cabinet greatly increases.
In the prior art, application publication number provides a kind of for high-voltage switch gear low pressure for the invention of CN104821246A
Blocking device, comprising: the bulge-structure switched on big axis is set；It can stretch out to the rotating path of the bulge-structure to stop
Bulge-structure rotation, or retract so that the rotatable limit assembly of bulge-structure；With two states, for indicating respectively gas
Pressure is higher than the gentle air pressure instruction component forced down in predetermined value of air pressure predetermined value；And air pressure perception component, the limit assembly
Air pressure in air pressure perception component is in returns state when being not less than air pressure predetermined value, and the bulge-structure is rotatable, described
Air pressure of the limit assembly in air pressure perception component is in stretching state, the transmission in the technical solution when being lower than air pressure predetermined value
Relationship is simple, low manufacture cost, but there are still some limitations in terms of durability, safety and application surface.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of easy to operate, stable and safe and reliable SF6It is disconnected
Road device low pressure latch-up protection device.
The technical solution of the present invention is as follows: a kind of SF6Breaker low pressure latch-up protection device, including sulphur hexafloride circuit breaker sheet
Body, air cylinder device, link gearing and separating brake rod assembly, it is characterised in that: the air cylinder device is vertically installed at supporting plate
It above and with the sulphur hexafloride circuit breaker ontology in outside is connected to by gas circuit, the cylinder at the top of the link gearing and air cylinder device
Connecting rod is flexibly connected, and the cylinder connecting rod can drive the slide closure of link gearing to realize left right horizontal movement, institute
It states slide closure horizontal movement to the left and is able to achieve the clamping function to move up and down to separating brake rod assembly, the separating brake pull rod
Hinged with manipulation connecting lever top at the top of component, the manipulation connecting lever bottom is linked by the handle of output shaft and breaker and is realized
The separating brake and feed motion of breaker, the link gearing and separating brake rod assembly are installed on side cabinet.
The air cylinder device includes cylinder main body, cylinder sleeve, spiral compression spring and air cylinder tie rod, the cylinder main body
It is vertically installed on supporting plate and cylinder main body bottom to be connected with the sulphur hexafloride circuit breaker ontology in outside by air pressure connecting tube, cylinder
Body top outer side seal is provided with cylinder sleeve, and air cylinder tie rod bottom movable sealing is arranged in the inner cavity of cylinder main body
And be arranged in the middle part of air cylinder tie rod at the top of cylinder sleeve for movable sealing, the cylinder between cylinder sleeve and cylinder main body is drawn
Bar outer sheath is equipped with spiral compression spring, and the air cylinder tie rod is acted on by the pressure of cylinder main body and cylinder sleeve and realized up and down
Movement, the air cylinder tie rod top are hinged at the top of cylinder connecting rod and cylinder connecting rod and are equipped with strip gab groove.
The link gearing includes that transmission crank arm, connecting lever holding spring, pull rod one and slide closure, the transmission are turned
Arm is that a rotating middle part is fixed on the L-type structure part on side cabinet, and the right side intermediate active of the L-type structure part is mounted on
In strip gab groove at the top of cylinder connecting rod, keep the bottom end of spring solid with connecting lever among the left side of the L-type structure part
Fixed, the connecting lever keeps the top of spring to be fixed on the side cabinet above L-type structure part, L-type structure part left side
End and pull rod one right end it is hinged, the left end of the pull rod one and slide closure are hinged, the inside portion of the slide closure
It is horizontally arranged in the sliding slot of slide closure installation part, the slide closure installation part is fixed by screws on side cabinet.
The separating brake rod assembly includes that separating brake pull rod installation part, separating brake pull rod, separating brake locking block and manual brake separating are drawn
Bar, the separating brake pull rod installation part are a steel angle structure part being fixed on side cabinet, and the section of the steel angle structure part is L
Type, the steel angle structure part top is plane and is provided with the strip gab groove to move up and down for separating brake pull rod, and the locking is slided
Block energy is horizontal to be moved downward to the top planes of steel angle structure part, and the separating brake pull rod top is hinged with manipulation connecting lever top and divides
The top of lock pull rod is provided with separating brake locking block, the installation site of separating brake locking block be higher than slide closure and with locking
With the use of the braking function realized to separating brake pull rod, separating brake pull rod bottom is movably arranged on draws sliding block positioned at manual brake separating
In strip gab groove at the top of bar.
The slide closure is that bevelled rectangular parallelepiped structure, the left side top of the slide closure is arranged in a left side top
Shapes and sizes can be symmetrically divided into for left side top inclined-plane for the fluting that separating brake pull rod passes through, the fluting by being provided among inclined-plane
Identical two parts.
The separating brake locking block is fastened on the rectangular parallelepiped structure on separating brake pull rod, the separating brake by block screw for one
Locking block, which is obliquely installed, enables bottom surface and the left side top inclined-plane composition activity of slide closure to cooperate.
Further, the block screw nut portions inclination installation and have can be with slide closure left side top inclined-plane phase
The bottom plane of cooperation, i.e., the described block screw nut portions and separating brake locking block bottom surface respectively with the left side of slide closure
Top bevel is slotted the cooperation of front and back two parts activity respectively.
The low pressure latch-up protection device further includes board turning component, and the board turning component includes board turning plate and locking warning
Board, board turning plate lower part are fixed on side cabinet by shaft rotation, are provided with strip gab groove at the top of the board turning plate,
It is movably arranged in the middle part of the pull rod one in the strip gab groove at the top of board turning plate, board turning board bottom portion is provided with snap-gauge, institute
It states the rotation of locking warning sign side to be fixed on supporting plate, the locking warning sign other side is provided with the card with snap-gauge activity cooperation
Slot.
Two sides are respectively provided with a warning sign turn hole at the top of the locking warning sign, are provided with fixation in the warning sign turn hole
Retaining ring on supporting plate, the locking warning sign can be freely rotated in two retaining rings.
The low pressure latch-up protection device further includes electronic trip gear, and the electronic trip gear includes electronic separating brake
Tripping plate, tripping plate keep spring and driving lever, and the electronic separating brake tripping plate rotation is fixed on side cabinet, the tripping plate
Keep the top of spring to be fixed on the side cabinet above electronic separating brake tripping plate, the tripping plate keep the bottom end of spring with
The right side of electronic separating brake tripping plate is fixed, connect at the top of the driving lever with the right end of electronic separating brake tripping plate and driving lever bottom and
It manipulates at the top of connecting lever hingedly, the electronic separating brake tripping plate is acted on by electromagnet realizes that rotation passes through driving lever, manipulation is turned
The final separating brake and feed motion for realizing breaker of the linkage of the handle three of arm and breaker.
The invention has the benefit that low pressure latch-up protection device provided by the present invention is applied to LW3-12 (B) type
When breaker, when switch internal pressure is lower than 0.2MPa, latch-up protection device starting locking breaking-closing operating makes manual and electric
Dynamic separating brake not can be carried out movement, and accident occurs for divide-shut brake when effectively avoiding sulphur hexafloride circuit breaker hypobaric, relative to existing
Some low pressure latch-up protection devices, the present invention have the advantages that control is more acurrate, safety is more preferable and widely applicable.
Detailed description of the invention
Fig. 1 is main view of the invention；
Fig. 2 is side view of the invention；
Fig. 3 is cylinder main body schematic cross-section of the invention；
Fig. 4 is slide closure main view of the invention；
Fig. 5 is slide closure top view of the invention.
In figure, 1- sulphur hexafloride circuit breaker ontology, 2- air pressure connecting tube, 3- cylinder main body, 4- air cylinder tie rod, 5- spiral pressure
Contracting spring, 6- board turning plate, 7- cylinder connecting rod, 8- pull rod one, 9- transmission crank arm, 10- connecting lever keep spring, the electronic separating brake of 11-
Tripping plate, 12- separating brake are latched block, 13- slide closure, 14- separating brake pull rod, 15- manual brake separating pull rod, 16- locking warning sign.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
As shown in Figs. 1-5, a kind of SF6Breaker low pressure latch-up protection device, including sulphur hexafloride circuit breaker ontology (1),
Air cylinder device, link gearing, separating brake pull rod (14) component and electronic trip gear, it is characterised in that: the air cylinder device
Be vertically installed on supporting plate and be connected to the sulphur hexafloride circuit breaker ontology (1) in outside by gas circuit, the link gearing with
The connection of air cylinder device top movable, the slide closure (13) of the link gearing can left right horizontal movement and realize to point
The clamping function that lock pull rod (14) component moves up and down, separating brake pull rod (14) the component top and manipulation connecting lever top
Hingedly, the manipulation connecting lever bottom realizes the separating brake of breaker by the linkage of the handle of output shaft and breaker and closes a floodgate dynamic
Make, also hinged with the driving lever of electronic trip gear, the link gearing, separating brake pull rod (14) group at the top of the manipulation connecting lever
Part and electronic trip gear are installed on side cabinet.
The air cylinder device includes cylinder main body (3), cylinder sleeve, cylindroid helical-coil compression spring (5) and air cylinder tie rod
(4), the cylinder main body (3) is vertically installed on supporting plate and the sulphur hexafloride circuit breaker ontology of cylinder main body (3) bottom and outside
(1) it is connected by air pressure connecting tube (2), cylinder main body (3) top outer sealed set has cylinder sleeve, the air cylinder tie rod
(4) bottom movable sealing is arranged in the inner cavity of cylinder main body (3) and is to live with cylinder sleeve top in the middle part of air cylinder tie rod (4)
Dynamic sealing setting, air cylinder tie rod (4) outer sheath between cylinder sleeve and cylinder main body (3) are equipped with cylindrical screw and compress bullet
Spring (5), the air cylinder tie rod (4) are acted on by the pressure of cylinder main body (3) and cylinder sleeve and realize and move up and down, the cylinder
It is hinged at the top of pull rod (4) at the top of cylinder connecting rod (7) and cylinder connecting rod (7) and is equipped with strip gab groove；The present invention claims gas
Cylinder bore is Φ 27+0.05mm, deep 63mm.
The link gearing includes transmission crank arm (9), connecting lever holding spring (10), pull rod one (8) and slide closure
(13), the transmission crank arm (9) is that a rotating middle part is fixed on the L-type structure part on side cabinet, the right side of the L-type structure part
It is movably arranged in the strip gab groove at the top of cylinder connecting rod (7) among half portion by screw, left the half of the L-type structure part
The bottom end of spring (10) is kept to fix with connecting lever among portion, the connecting lever keeps the top of spring (10) to be fixed on L-type structure part
On the side cabinet of top, the end of L-type structure part left side and the right end of pull rod one (8) are hinged, the pull rod one (8)
Left end and slide closure (13) hingedly, horizontal anomalous movement is mounted on slide closure (13) installation part on the inside of the slide closure (13)
Sliding slot, slide closure (13) installation part is horizontally fixed on side cabinet by screw.
Separating brake pull rod (14) component includes separating brake pull rod (14) installation part, separating brake pull rod (14), separating brake locking block
(12) and manual brake separating pull rod (15), separating brake pull rod (14) installation part are a steel angle structure being fixed on side cabinet
Part, the section of the steel angle structure part are L-type, are plane at the top of the steel angle structure part and are provided on separating brake pull rod (14)
The strip gab groove of lower movement, the slide closure (13) horizontal can move downward to the top planes of steel angle structure part, described
Hinged and separating brake pull rod (14) top at the top of manipulation connecting lever is provided with separating brake locking block (12) at the top of separating brake pull rod (14),
The installation site of separating brake locking block (12) is higher than slide closure (13) and with slide closure (13) with the use of realization pair
The braking function of separating brake pull rod (14), separating brake pull rod (14) bottom are movably arranged on by screw positioned at manual brake separating pull rod
(15) in the strip gab groove at the top of.
The slide closure (13) is that bevelled rectangular parallelepiped structure is arranged in a left side top, the slide closure (13)
Being provided among left side top inclined-plane can symmetrically divide on left side top inclined-plane for the fluting that separating brake pull rod (14) pass through, the fluting
For the identical two parts of shapes and sizes；Separating brake locking block (12) is fastened on separating brake pull rod by block screw for one
(14) rectangular parallelepiped structure on, separating brake locking block (12), which is obliquely installed, enables the left side of bottom surface and slide closure (13)
Lateral roof inclined-plane composition activity cooperation；Further, the nut portions of the block screw also tilt installation and have can be with locking
The bottom plane that sliding block (13) left side top inclined-plane matches, i.e., the nut portions and separating brake of the described block screw are latched block (12)
Bottom surface be slotted respectively with the left side top inclined-plane of slide closure (13) front and back two parts activity respectively cooperation；
The electronic trip gear includes that electronic separating brake is threaded off plate (11), tripping plate keeps spring and driving lever, described electronic
Separating brake tripping plate (11) rotation is fixed on side cabinet, and the tripping plate keeps the top of spring to be fixed on electronic separating brake tripping
On side cabinet above plate (11), the tripping plate keeps the bottom end of spring and the right side of electronic separating brake tripping plate (11) to consolidate
Determine, is connect at the top of the driving lever with the right end of electronic separating brake tripping plate (11) and driving lever bottom and manipulation connecting lever top are hinged, institute
It states electronic separating brake tripping plate (11) and the handle for realizing that rotation passes through driving lever, manipulates connecting lever and breaker is acted on by electromagnet
The final separating brake and feed motion for realizing breaker of the linkage of three.
The latch-up protection device further includes board turning component, and the board turning component includes board turning plate (6) and locking warning sign
(16), board turning plate (6) lower part is fixed on side cabinet by shaft rotation, is provided with item at the top of the board turning plate (6)
Shape open slot, pull rod one (8) middle part is movably arranged in the strip gab groove at the top of board turning plate (6) by screw, described
Board turning plate (6) bottom is provided with a snap-gauge, and two sides are respectively provided with a warning sign turn hole, institute at the top of the locking warning sign (16)
The retaining ring that setting is fixed on supporting plate in warning sign turn hole is stated, the locking warning sign (16) can freely turn in two retaining rings
Dynamic, described locking warning sign (16) bottom is provided with one and extends to outer side edges and the card slot with snap-gauge activity cooperation.
The operation principle of the present invention is that: when sulphur hexafloride circuit breaker ontology (1) is normal 0.35MPa, the pressure of gas
The compression spring energy storage of cylinder is given by air cylinder tie rod (4), and is pushed up in place, when pressure is less than 0.2MPa, due to cylindrical screw pressure
The active cylinder pull rod (4) of contracting spring (5) back moves, pull transmission crank arm (9), transmission crank arm (9) drive pull rod one (8) and
Slide closure (13) is discharged separating brake locking block (12) locking by pull rod one (8) synchronous drive board turning plate (6) and is latched
Warning sign (16).When separating brake locking block (12) is locked, manual and electronic separating brake all akinesias make mechanism be maintained at former
Carry out state, avoids sulphur hexafloride circuit breaker divide-shut brake when hypobaric that accident occurs.
The above embodiments and description only illustrate the principle of the present invention and most preferred embodiment, is not departing from this
Under the premise of spirit and range, various changes and improvements may be made to the invention, these changes and improvements both fall within requirement and protect
In the scope of the invention of shield.
Claims (10)
1. a kind of SF6Breaker low pressure latch-up protection device, including sulphur hexafloride circuit breaker ontology, air cylinder device, link transmission dress
It sets and separating brake rod assembly, it is characterised in that: the air cylinder device is vertically installed on supporting plate and opens with the sulfur hexafluoride in outside
It closes ontology to be connected to by gas circuit, the link gearing is flexibly connected with the cylinder connecting rod at the top of air cylinder device, the gas
Cylinder connecting rod can drive the slide closure of link gearing to realize left right horizontal movement, slide closure horizontal movement to the left
It is able to achieve the clamping function to move up and down to separating brake rod assembly, the separating brake rod assembly top and manipulation connecting lever top
Hingedly, the manipulation connecting lever bottom realizes the separating brake of breaker by the linkage of the handle of output shaft and breaker and closes a floodgate dynamic
Make, the link gearing and separating brake rod assembly are installed on side cabinet.
2. SF according to claim 16Breaker low pressure latch-up protection device, it is characterised in that: the air cylinder device packet
Cylinder main body, cylinder sleeve, spiral compression spring and air cylinder tie rod are included, the cylinder main body is vertically installed on supporting plate and cylinder
Bottom part body is connected with the sulphur hexafloride circuit breaker ontology in outside by air pressure connecting tube, and cylinder main body top outer sealed set has
Cylinder sleeve, air cylinder tie rod bottom movable sealing are arranged in the inner cavity of cylinder main body and in the middle part of air cylinder tie rods and cylinder jacket
Cylinder top is that movable sealing is arranged, and the air cylinder tie rod outer sheath between cylinder sleeve and cylinder main body is equipped with helical compression bullet
Spring, the air cylinder tie rod are acted on by the pressure of cylinder main body and cylinder sleeve and realize and move up and down, at the top of the air cylinder tie rod
It is hinged at the top of cylinder connecting rod and cylinder connecting rod and is equipped with strip gab groove.
3. SF according to claim 26Breaker low pressure latch-up protection device, it is characterised in that: the link transmission dress
It sets and keeps spring, pull rod one and slide closure including transmission crank arm, connecting lever, the transmission crank arm is that a rotating middle part is fixed on cabinet
L-type structure part on the plate of side, the bar shaped that the right side intermediate active of the L-type structure part is mounted at the top of cylinder connecting rod are opened
In mouth slot, among the left side of the L-type structure part and connecting lever keeps the bottom end of spring to fix, and the connecting lever keeps the top of spring
End is fixed on the side cabinet above L-type structure part, and the end of L-type structure part left side and the right end of pull rod one are cut with scissors
It connects, the left end of the pull rod one and slide closure are hinged, and the inside portion of the slide closure is horizontally arranged at slide closure installation
In the sliding slot of part, the slide closure installation part is fixed by screws on side cabinet.
4. SF according to claim 36Breaker low pressure latch-up protection device, it is characterised in that: the separating brake pull rod group
Part includes that separating brake pull rod installation part, separating brake pull rod, separating brake locking block and manual brake separating pull rod, the separating brake pull rod installation part are
One is fixed on the steel angle structure part on side cabinet, and the section of the steel angle structure part is L-type, is at the top of the steel angle structure part
Plane and it is provided with the strip gab groove to move up and down for separating brake pull rod, the slide closure energy level moves downward to angle steel knot
The top planes of component, the separating brake pull rod top are provided with separating brake with hinged and separating brake pull rod top at the top of manipulation connecting lever and close
Stopper block, the installation site of the separating brake locking block are higher than slide closure and draw with the use of realization separating brake with slide closure
The braking function of bar, separating brake pull rod bottom are movably arranged in the strip gab groove at the top of manual brake separating pull rod.
5. SF according to claim 46Breaker low pressure latch-up protection device, it is characterised in that: the slide closure is
Bevelled rectangular parallelepiped structure is arranged in one left side top, and being provided among the left side top inclined-plane of the slide closure can be for separating brake
Left side top inclined-plane is symmetrically divided into the identical two parts of shapes and sizes by the fluting that pull rod passes through, the fluting.
6. SF according to claim 56Breaker low pressure latch-up protection device, it is characterised in that: the separating brake locking gear
Block is fastened on the rectangular parallelepiped structure on separating brake pull rod by block screw for one, and the separating brake locking block is obliquely installed so that bottom
Face can cooperate with the left side top inclined-plane composition activity of slide closure.
7. SF according to claim 66Breaker low pressure latch-up protection device, it is characterised in that: the block screw
Nut portions inclination installs and has the bottom plane that can be matched with slide closure left side top inclined-plane.
8. SF according to claim 46Breaker low pressure latch-up protection device, it is characterised in that: the low pressure locking
Protective device further includes board turning component, and the board turning component includes board turning plate and locking warning sign, and board turning plate lower part passes through
Shaft rotation is fixed on side cabinet, and strip gab groove, the one middle part activity peace of pull rod are provided at the top of the board turning plate
In the strip gab groove at the top of board turning plate, board turning board bottom portion is provided with snap-gauge, the locking warning sign side rotation
It is fixed on supporting plate, the locking warning sign other side is provided with the card slot with snap-gauge activity cooperation.
9. SF according to claim 86Breaker low pressure latch-up protection device, it is characterised in that: the locking warning sign
Top two sides are respectively provided with a warning sign turn hole, and the retaining ring being fixed on supporting plate is provided in the warning sign turn hole, described to close
Lock warning sign can be freely rotated in two retaining rings.
10. the SF according to claim 4 or 86Breaker low pressure latch-up protection device, it is characterised in that: the low pressure
Latch-up protection device further includes electronic trip gear, and the electronic trip gear includes electronic separating brake tripping plate, tripping plate holding
Spring and driving lever, the electronic separating brake tripping plate rotation are fixed on side cabinet, and the tripping plate keeps the top of spring solid
It is scheduled on the side cabinet above electronic separating brake tripping plate, the tripping plate keeps the bottom end of spring and electronic separating brake tripping plate
Right side is fixed, and is connect at the top of the driving lever with the right end of electronic separating brake tripping plate and is cut with scissors at the top of driving lever bottom and manipulation connecting lever
It connects, the electronic separating brake tripping plate acts on the hand for realizing that rotation passes through driving lever, manipulates connecting lever and breaker by electromagnet
The final separating brake and feed motion for realizing breaker of the linkage of handle three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611084621.8A CN107895670B (en) | 2016-11-30 | 2016-11-30 | A kind of SF6Breaker low pressure latch-up protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611084621.8A CN107895670B (en) | 2016-11-30 | 2016-11-30 | A kind of SF6Breaker low pressure latch-up protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107895670A CN107895670A (en) | 2018-04-10 |
| CN107895670B true CN107895670B (en) | 2019-10-29 |
Family
ID=61803190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611084621.8A Active CN107895670B (en) | 2016-11-30 | 2016-11-30 | A kind of SF6Breaker low pressure latch-up protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107895670B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6113065A (en) * | 1996-02-26 | 2000-09-05 | Abb Transmit Oy | Method and arrangement for low-pressure locking of a gas-filled device |
| CN2809844Y (en) * | 2005-07-14 | 2006-08-23 | 常州森源开关有限公司 | Apparatus for locking bypass load switch upon air press loss with indication function |
| CN203774122U (en) * | 2014-02-17 | 2014-08-13 | Abb技术有限公司 | Low-pressure locking device |
| CN104821246A (en) * | 2015-05-15 | 2015-08-05 | 浙江华仪电器科技有限公司 | Low-pressure blocking device for high-pressure switch |
| CN206282790U (en) * | 2016-11-30 | 2017-06-27 | 湛江高压电器有限公司 | A kind of SF6Breaker low pressure latch-up protection device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08315694A (en) * | 1995-05-19 | 1996-11-29 | Nippon Kouatsu Electric Co | Gas pressure drop lock indicator in gas switch |
-
2016
- 2016-11-30 CN CN201611084621.8A patent/CN107895670B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6113065A (en) * | 1996-02-26 | 2000-09-05 | Abb Transmit Oy | Method and arrangement for low-pressure locking of a gas-filled device |
| CN2809844Y (en) * | 2005-07-14 | 2006-08-23 | 常州森源开关有限公司 | Apparatus for locking bypass load switch upon air press loss with indication function |
| CN203774122U (en) * | 2014-02-17 | 2014-08-13 | Abb技术有限公司 | Low-pressure locking device |
| CN104821246A (en) * | 2015-05-15 | 2015-08-05 | 浙江华仪电器科技有限公司 | Low-pressure blocking device for high-pressure switch |
| CN206282790U (en) * | 2016-11-30 | 2017-06-27 | 湛江高压电器有限公司 | A kind of SF6Breaker low pressure latch-up protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107895670A (en) | 2018-04-10 |
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