CN105826128B - Multi-functional double float gas relays - Google Patents
Multi-functional double float gas relays Download PDFInfo
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- CN105826128B CN105826128B CN201510006301.XA CN201510006301A CN105826128B CN 105826128 B CN105826128 B CN 105826128B CN 201510006301 A CN201510006301 A CN 201510006301A CN 105826128 B CN105826128 B CN 105826128B
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- magnetic steel
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- 239000000523 sample Substances 0.000 claims description 23
- 235000014676 Phragmites communis Nutrition 0.000 claims 1
- 230000000694 effects Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
Multi-functional double float gas relays belong to protection equipment for transformer technical field more particularly to a kind of multi-functional double float gas relays.The present invention provides a kind of multi-functional double float gas relays for facilitating and distinguishing trip signal producing cause.The present invention includes housing, wire connection terminal and air relief cock are provided on housing, housing lower end is fixedly connected with vertical supports upper end, its structural feature vertical supports top is provided with lateral upper shaft lever, upper shaft lever is fixedly connected respectively in the middle part of upper pendulum bar, in the middle part of upper rocker, upper pendulum bar front end is provided with float, and upper rocker rear end is provided with upper magnetic steel, and the vertex that upper magnetic steel movement locus is corresponded on stent is provided with tongue tube；The vertical supports lower part is provided with laterally lower axostylus axostyle, lower axostylus axostyle and is fixedly connected respectively in the middle part of draft link, the first swing rack, and draft link front end is provided with lower float, and the first swing rack rear end is provided with the first lower magnetic steel.
Description
Technical field
The invention belongs to protection equipment for transformer technical field more particularly to a kind of multi-functional double float gas relays.
Background technology
Existing double float gas relays are protection transformer indispensable accessories, and collection is played in Transformer
The effect of gas alarm, oil-free tripping and oil flow surge tripping.
Existing double floating ball gas relays are after circuit fault trip, oil-free tripping and oil flow surge tripping, the event of progress
It needs to check item by item during barrier analysis, it is time-consuming and laborious.When signal output is pounded in jump, there are three possible causes：1st, oil flow surge impacts
Baffle acts；2nd, pasta declines；3rd, line fault.After being acted because of baffle, baffle automatically resets, and when inspection is bad, and to distinguish tripping former
Cause.In addition, existing gas relay does not act instruction function, line fault tripping and oil flow surge tripping cannot be distinguished.Cause
This, will all check one time from circuit to transformer body during maintenance, and also exist to the inspection of transformer body is time-consuming and laborious
Certain technical risk；Therefore the directly or indirectly expense generated is huge, and most of trippings are caused by line fault.
At present, gas relay can reflect the decline of oil-immersed transformer oil level, insulation breakdown, iron core failure, coil short
Etc. internal faults.So in installation and maintenance, it is necessary to according to actual conditions, gas relay is adjusted, to avoid
It jolts, vibrate the wrong report generated.
Invention content
The present invention addresses the above problem, provides a kind of multi-functional double floats for facilitating and distinguishing trip signal producing cause
Gas relay.
To achieve the above object, the present invention adopts the following technical scheme that, the present invention includes housing, and wiring is provided on housing
Terminal and air relief cock, housing lower end are fixedly connected with vertical supports upper end, and structural feature vertical supports top is provided with transverse direction
Upper shaft lever, upper shaft lever are fixedly connected respectively in the middle part of upper pendulum bar, in the middle part of upper rocker, and upper pendulum bar front end is provided with float, upper pendulum
Frame rear end is provided with upper magnetic steel, and the vertex that upper magnetic steel movement locus is corresponded on stent is provided with tongue tube.
The vertical supports lower part is provided with laterally lower axostylus axostyle, and lower axostylus axostyle is solid with draft link, the first swing rack middle part respectively
Fixed connection, draft link front end are provided with lower float, and the first swing rack rear end is provided with the first lower magnetic steel, is corresponded in vertical supports
The vertex of first lower magnetic steel movement locus is provided with first time tongue tube.
Lateral central shaft rod is provided in the middle part of the vertical supports, is fixedly connected in the middle part of central shaft rod and baffle, in vertical supports
It is provided with baffle vertical position limiting Self-resetting component.
The vertical supports lower end is provided with lateral lower shaft bar, and lower shaft bar is fixed with L-shaped pointer lower part, and L-shaped pointer erects
Plate and lower float are arranged on the bottom track on baffle top；Vertical supports lower end corresponds to L-shaped pointer transverse slat movement locus
Vertex be provided with bottom magnet steel；L-shaped pointer reset components are provided in vertical supports, the operating side of L-shaped pointer reset components is set
It puts in hull outside；The signal output end of the upper tongue tube and the signal output end of first time tongue tube respectively with wire connection terminal
It is correspondingly connected with.
As a preferred embodiment, limiting Self-resetting component of the present invention includes laterally adjusting bolt and attracts baffle
Magnet steel is limited, adjustment bolt and limiting magnet steel are arranged on rear side of the top of baffle, and the front end of adjustment bolt is withstood on baffle, is adjusted
Whole bolt is arranged on by threaded hole in vertical supports.
As another preferred embodiment, wire connection terminal of the present invention includes upper connecting terminal and lower connecting terminal, above connects
Line terminals are arranged on case inside, and lower connecting terminal is arranged on housing lower end outside, and upper connecting terminal is connected with lower connecting terminal.
As another preferred embodiment, it is provided under second with the first swing rack opposite side in vertical supports of the present invention
Rocker is fixedly connected with lower axostylus axostyle in the middle part of the second swing rack, and the second swing rack rear end is provided with the second lower magnetic steel, in vertical supports
The vertex of second lower magnetic steel movement locus is provided with second time tongue tube, second time tongue tube is corresponding with wire connection terminal to be connected
It connects.
As another preferred embodiment, wire connection terminal of the present invention is six, upper tongue tube, first time tongue tube, the
Two times tongue tubes correspond to two wire connection terminals respectively.
As another preferred embodiment, the cover, the cover side and housing hinge, housing are provided on housing of the present invention
Both sides are provided with observation window.
As another preferred embodiment, front side is provided with horizontal stroke in the vertical supports between upper float and baffle of the present invention
To Measure Board is tilted, Measure Board lower end is fixed with lateral connection front edge of board, and cross connecting plate passes through vertical connecting hole and fastener
It is connected with vertical supports, the front-rear direction of connecting hole vertically stent is at least provided with two.
As another preferred embodiment, upper tongue tube of the present invention, first time tongue tube and second time tongue tube are logical
It crosses two slanted half-circle intermediate plates to be arranged in vertical supports, two slanted half-circle intermediate plate one end pass through logical on fastener, intermediate plate
Inclination strip hole on hole, one folded plate of gusset is connected with gusset, another folded plate of gusset by the connecting hole on another folding of gusset and
Fastener is connected with vertical supports.
Secondly, L-shaped pointer reset components of the present invention include vertical probe, and the upper end of vertical probe is placed in upper part of the housing
Outside, the upper end that the lower end of vertical probe passes through the through-hole on housing to take off magnet wire with folding shape are connected, and the lower end of de- magnet wire is worn
Lead to the middle through-hole of the bottom magnet steel；Support plate in lateral upper supporting plate, transverse direction, lateral lower carrier plate are provided in vertical supports, vertically
The lower end of probe sequentially passes through support plate in lateral upper supporting plate, transverse direction and takes off magnet wire by the connecting seat on lateral lower carrier plate and folding shape
Upper end be connected；Resetting spring, resetting spring lower end are provided on vertical probe in lateral upper supporting plate and transverse direction between support plate
It is fixed with support plate in transverse direction, resetting spring upper end is fixed with vertical probe.
In addition, vertical supports top of the present invention is inverted L-shaped frame, lower part is U-frame, and L-shaped frame upper end transverse slat passes through tight
Firmware is fixed with housing lower face；The baffle plate setting is on the inside of U-frame, upper magnetic steel, upper tongue tube, the first lower magnetic steel, first
Lower tongue tube, the second lower magnetic steel, second time tongue tube, vertical probe are arranged on the outside of U-frame.
Advantageous effect of the present invention.
The present invention has the function of the instruction of baffle holding function, and pointer is acted with baffle, and after baffle reset, pointer stays
The position after action；Facilitate the producing cause for distinguishing trip signal, save a large amount of time, human and material resources.
The present invention limits Self-resetting component by baffle vertical position and baffle sensitivity is finely adjusted, and prevents vibration from missing
It reports, is stuck.The wrong report of function distinguishing circuit is indicated by pointer and distinguishes oil-free and oil flow surge tripping；And pass through pointer reset portion
Part easily resets pointer.
Description of the drawings
The present invention will be further described with reference to the accompanying drawings and detailed description.The scope of the present invention not only limits to
In the statement of the following contents.
Fig. 1 is front view of the present invention.
Fig. 2 is rearview of the present invention.
Fig. 3 is left view of the present invention.
Fig. 4 is right view of the present invention.
In figure, 1 be air relief cock, 2 be probe, 3 be lower connecting terminal, 4 be Measure Board, 5 be upper float, 6 be pointer reset
Component, 7 be first time tongue tube, 8 be the first lower magnetic steel, 9 be baffle, 10 be pointer, 11 be lower float, 12 be that upper dry spring connects
Pipe, 13 be second time tongue tube, 14 be upper magnetic steel, 15 be the second lower magnetic steel, 16 be bottom magnet steel, 17 be rain cover, 18 be weight.
Specific embodiment
As shown in the figure, the present invention includes housing, wire connection terminal and air relief cock, housing lower end and vertical branch are provided on housing
Frame upper end is fixedly connected, and structural feature vertical supports top is provided with lateral upper shaft lever, upper shaft lever respectively in the middle part of upper pendulum bar,
It is fixedly connected in the middle part of upper rocker, upper pendulum bar front end is provided with float, and upper rocker rear end is provided with upper magnetic steel, is corresponded on stent
The vertex of upper magnetic steel movement locus is provided with tongue tube.
The vertical supports lower part is provided with laterally lower axostylus axostyle, and lower axostylus axostyle is solid with draft link, the first swing rack middle part respectively
Fixed connection, draft link front end are provided with lower float, and the first swing rack rear end is provided with the first lower magnetic steel, is corresponded in vertical supports
The vertex of first lower magnetic steel movement locus is provided with first time tongue tube.
Lateral central shaft rod is provided in the middle part of the vertical supports, is fixedly connected in the middle part of central shaft rod and baffle, in vertical supports
It is provided with baffle vertical position limiting Self-resetting component.
The vertical supports lower end is provided with lateral lower shaft bar, and lower shaft bar is fixed with L-shaped pointer lower part, and L-shaped pointer erects
Plate and lower float are arranged on the bottom track on baffle top；Vertical supports lower end corresponds to L-shaped pointer transverse slat movement locus
Vertex be provided with bottom magnet steel；L-shaped pointer reset components are provided in vertical supports, the operating side of L-shaped pointer reset components is set
It puts in hull outside；The signal output end of the upper tongue tube and the signal output end of first time tongue tube respectively with wire connection terminal
It is correspondingly connected with.
The upper pendulum bar front end is provided with weight；Weight is matched to act convenient for upper float.
The limiting Self-resetting component includes the limiting magnet steel for laterally adjusting bolt and attracting baffle, adjustment bolt and limiting
Magnet steel is arranged on rear side of the top of baffle, and the front end of adjustment bolt is withstood on baffle, and adjustment bolt is arranged on by threaded hole
In vertical supports.Baffle top is pushed by rotating adjustment bolt, the distance between regulating fender top and limiting magnet steel are adjustable
Pulling force suffered by whole baffle can adjust sensitivity as the case may be.
The wire connection terminal includes upper connecting terminal and lower connecting terminal, and upper connecting terminal is arranged on case inside, under connect
Line terminals are arranged on housing lower end outside, and upper connecting terminal is connected with lower connecting terminal.Lower connecting terminal is convenient for connecting with tongue tube
It connects, upper connecting terminal is convenient for connecting with external detection equipment.
The second swing rack, the second swing rack middle part and lower axle are provided in the vertical supports with the first swing rack opposite side
Bar is fixedly connected, and the second swing rack rear end is provided with the second lower magnetic steel, and the second lower magnetic steel movement locus is corresponded in vertical supports
Vertex be provided with second time tongue tube, second time tongue tube is correspondingly connected with wire connection terminal.
The wire connection terminal is six, and upper tongue tube, first time tongue tube, second time tongue tube correspond to two wiring respectively
Terminal；Convenient for output alarm signal and trip signal respectively.
The cover, the cover side and housing hinge are provided on the housing, housing both sides are provided with observation window；Convenient for observation
Oil level.
The observation window uses implosion guard observation window.
Front side is provided with lateral inclination Measure Board in vertical supports between the upper float and baffle, Measure Board lower end with
Lateral connection front edge of board is fixed, and cross connecting plate is connected by vertical connecting hole and fastener with vertical supports, and connecting hole edge is perpendicular
To stent front-rear direction at least provided with two.By connecting different connecting holes, the front and back position of Measure Board is can adjust, is adjusted
Whole choked flow intensity.
The upper tongue tube, first time tongue tube and second time tongue tube are arranged on perpendicular by two slanted half-circle intermediate plates
On stent, two slanted half-circle intermediate plate one end pass through the through-hole on fastener, intermediate plate, the inclination strip hole on one folded plate of gusset
It is connected with gusset, another folded plate of gusset is connected by the connecting hole on another folding of gusset and fastener with vertical supports.Unclamp folder
Piece can adjust the distance between magnet steel and tongue tube, adjust tongue tube sensitivity.
The L-shaped pointer reset components include vertical probe, and the upper end of vertical probe is placed on the outside of upper part of the housing, vertical to visit
The upper end that the lower end of needle passes through the through-hole on housing to take off magnet wire with folding shape is connected, and takes off bottom magnet steel described in the lower end break-through of magnet wire
Middle through-hole；Be provided with support plate in lateral upper supporting plate, transverse direction, lateral lower carrier plate in vertical supports, the lower end of vertical probe according to
The secondary upper end for taking off magnet wire with folding shape by the connecting seat on lateral lower carrier plate across support plate in lateral upper supporting plate, transverse direction is connected；
Resetting spring, resetting spring lower end and support plate in transverse direction are provided on vertical probe in lateral upper supporting plate and transverse direction between support plate
Fixed, resetting spring upper end is fixed with vertical probe.
The vertical supports top is inverted L-shaped frame, and lower part is U-frame, and L-shaped frame upper end transverse slat passes through under fastener and housing
End face is fixed；The baffle plate setting is on the inside of U-frame, upper magnetic steel, upper tongue tube, the first lower magnetic steel, first time tongue tube, second
Lower magnetic steel, second time tongue tube, vertical probe are arranged on the outside of U-frame.
Rain cover is provided on the outside of the upper end of the vertical probe.
Illustrate the course of work of the present invention below in conjunction with the accompanying drawings.
The present invention is immersed in when using in the oil of closing.When collect tolerance reache a certain level when under the effect of gravity, float
Son sinks with liquid level, and upper shaft lever rotation drives upper magnetic steel rise that tongue tube is made to send out alarm signal, deflated with spanner turn
Knob is filled in deflate.
When oil stream speed reaches certain value, oil stream impact baffle plate makes baffle be detached from the constraint of limiting magnet steel to oil stream direction
Movement, the baffle top bottom push lower float to rotate down, and lower axostylus axostyle rotation drives the first lower magnetic steel, the second lower magnetic steel upward
Movement, dry spring section pipe sends out trip signal under dry spring section pipe and second under making first；The baffle top bottom simultaneously pushes L-shaped to refer to
Needle tilts, and tilts the rising of L-shaped pointer transverse slat and is sucked by bottom magnet steel.After baffle reinstatement state, due to tilting L-shaped pointer transverse slat
It is sucked by bottom magnet steel, L-shaped pointer still tilts.Probe is pressed, folding shape takes off magnet wire lower end and stretches out bottom magnet steel middle through-hole by L-shaped
Under pointer transverse slat top, L-shaped pointer transverse slat is made to be detached from bottom magnet steel, under the effect of gravity, L-shaped pointer resets.Resetting spring makes spy
Needle resets.
When oil-free, under the effect of gravity, lower float is fallen, and lower axostylus axostyle rotation drives the first lower magnetic steel, the second lower magnetic steel
It moves upwards, dry spring section pipe sends out trip signal under dry spring section pipe and second under making first.
It is understood that above with respect to the specific descriptions of the present invention, it is merely to illustrate the present invention and is not limited to this
The described technical solution of inventive embodiments, it will be understood by those of ordinary skill in the art that, still the present invention can be carried out
Modification or equivalent replacement, to reach identical technique effect；As long as meeting using needs, all protection scope of the present invention it
It is interior.
Claims (7)
1. multi-functional double float gas relays, including housing, be provided with wire connection terminal and air relief cock on housing, housing lower end with
Vertical supports upper end is fixedly connected, it is characterised in that vertical supports top is provided with lateral upper shaft lever, upper shaft lever respectively with upper pendulum
It is fixedly connected in the middle part of bar, in the middle part of upper rocker, upper pendulum bar front end is provided with float, and upper rocker rear end is provided with upper magnetic steel, stent
The upper vertex corresponding to upper magnetic steel movement locus is provided with tongue tube；
The vertical supports lower part is provided with laterally lower axostylus axostyle, and lower axostylus axostyle connects respectively with fixed in the middle part of draft link, the first swing rack
It connects, draft link front end is provided with lower float, and the first swing rack rear end is provided with the first lower magnetic steel, first is corresponded in vertical supports
The vertex of lower magnetic steel movement locus is provided with first time tongue tube；
Lateral central shaft rod is provided in the middle part of the vertical supports, is fixedly connected in the middle part of central shaft rod and baffle, is set in vertical supports
There is baffle vertical position to limit Self-resetting component；
The vertical supports lower end is provided with lateral lower shaft bar, and lower shaft bar is fixed with L-shaped pointer lower part, the riser of L-shaped pointer and
Lower float is arranged on the bottom track on baffle top；Vertical supports lower end corresponds to the top of L-shaped pointer transverse slat movement locus
Point is provided with bottom magnet steel；L-shaped pointer reset components are provided in vertical supports, the operating side of L-shaped pointer reset components is arranged on
Hull outside；The signal output end of the upper tongue tube and the signal output end of first time tongue tube are corresponding with wire connection terminal respectively
Connection；
The limiting Self-resetting component includes the limiting magnet steel for laterally adjusting bolt and attracting baffle, adjustment bolt and limiting magnet steel
It is arranged on rear side of the top of baffle, the front end of adjustment bolt is withstood on baffle, and adjustment bolt is arranged on vertically by threaded hole
On stent；
The second swing rack is provided in the vertical supports with the first swing rack opposite side, is consolidated in the middle part of the second swing rack with lower axostylus axostyle
Fixed connection, the second swing rack rear end are provided with the second lower magnetic steel, the top of the second lower magnetic steel movement locus are corresponded in vertical supports
Point is provided with second time tongue tube, and second time tongue tube is correspondingly connected with wire connection terminal；
The L-shaped pointer reset components include vertical probe, and the upper end of vertical probe is placed on the outside of upper part of the housing, vertical probe
The upper end that lower end passes through the through-hole on housing to take off magnet wire with folding shape is connected, and takes off in bottom magnet steel described in the lower end break-through of magnet wire
Portion's through-hole；Support plate in lateral upper supporting plate, transverse direction, lateral lower carrier plate are provided in vertical supports, the lower end of vertical probe is worn successively
Support plate in lateral upper supporting plate, transverse direction is crossed, the upper end for taking off magnet wire with folding shape by the connecting seat on lateral lower carrier plate is connected；Laterally
Resetting spring is provided on vertical probe in upper supporting plate and transverse direction between support plate, resetting spring lower end is consolidated with support plate in transverse direction
Fixed, resetting spring upper end is fixed with vertical probe.
2. multi-functional double float gas relays according to claim 1, it is characterised in that the wire connection terminal includes above connecing
Line terminals and lower connecting terminal, upper connecting terminal are arranged on case inside, and lower connecting terminal is arranged on housing lower end outside, above connects
Line terminals are connected with lower connecting terminal.
3. multi-functional double float gas relays according to claim 1, it is characterised in that the wire connection terminal is six, on
Tongue tube, first time tongue tube, second time tongue tube correspond to two wire connection terminals respectively.
4. multi-functional double float gas relays according to claim 1, it is characterised in that the cover is provided on the housing,
The cover side and housing hinge, housing both sides are provided with observation window.
5. multi-functional double float gas relays according to claim 1, it is characterised in that between the upper float and baffle
Vertical supports on front side be provided with lateral inclination Measure Board, Measure Board lower end is fixed with lateral connection front edge of board, lateral connection
Plate is connected by vertical connecting hole and fastener with vertical supports, and the front-rear direction of connecting hole vertically stent is at least provided with two
It is a.
6. multi-functional double float gas relays according to claim 1, it is characterised in that the upper tongue tube is done for first time
Reed pipe and second time tongue tube are arranged on by two slanted half-circle intermediate plates in vertical supports, two slanted half-circle intermediate plate one end
It is connected by the through-hole on fastener, intermediate plate, the inclination strip hole on one folded plate of gusset with gusset, another folded plate of gusset passes through angle
Connecting hole and fastener on another folding of plate are connected with vertical supports.
7. multi-functional double float gas relays according to claim 1, it is characterised in that the vertical supports top is inverted L
Shape frame, lower part are U-frame, and L-shaped frame upper end transverse slat is fixed by fastener and housing lower face；The baffle plate setting is in U-frame
Inside, upper magnetic steel, upper tongue tube, the first lower magnetic steel, first time tongue tube, the second lower magnetic steel, second time tongue tube, vertical probe
It is arranged on the outside of U-frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510006301.XA CN105826128B (en) | 2015-01-07 | 2015-01-07 | Multi-functional double float gas relays |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510006301.XA CN105826128B (en) | 2015-01-07 | 2015-01-07 | Multi-functional double float gas relays |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105826128A CN105826128A (en) | 2016-08-03 |
| CN105826128B true CN105826128B (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510006301.XA Active CN105826128B (en) | 2015-01-07 | 2015-01-07 | Multi-functional double float gas relays |
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| CN (1) | CN105826128B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111883385B (en) * | 2020-08-12 | 2022-09-02 | 郑州赛奥电子股份有限公司 | Gas relay with independent heavy gas and oil loss functions |
| CN112908775B (en) * | 2021-02-26 | 2024-09-13 | 沈阳明远电气科技有限公司 | Multifunctional float type gas relay |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0945951A2 (en) * | 1998-03-24 | 1999-09-29 | COMEM S.p.A. | Improved gas-accumulation Buchholz relay |
| CN102856116A (en) * | 2012-09-12 | 2013-01-02 | 辽宁省电力有限公司电力科学研究院 | Double floater and double contact gas relay |
| CN103620719A (en) * | 2011-06-22 | 2014-03-05 | 赖茵豪森机械制造公司 | Buchholz relay |
| CN103718258A (en) * | 2011-07-25 | 2014-04-09 | Abb技术有限公司 | Safety apparatus and monitoring method for a power transformer, and related power transformer |
| CN104134576A (en) * | 2014-07-16 | 2014-11-05 | 国家电网公司 | Three-pin reed switch type double-circuit trip node gas relay |
| CN204315458U (en) * | 2015-01-07 | 2015-05-06 | 国家电网公司 | Multi-functional pair of float Buchholz relay |
-
2015
- 2015-01-07 CN CN201510006301.XA patent/CN105826128B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0945951A2 (en) * | 1998-03-24 | 1999-09-29 | COMEM S.p.A. | Improved gas-accumulation Buchholz relay |
| CN103620719A (en) * | 2011-06-22 | 2014-03-05 | 赖茵豪森机械制造公司 | Buchholz relay |
| CN103718258A (en) * | 2011-07-25 | 2014-04-09 | Abb技术有限公司 | Safety apparatus and monitoring method for a power transformer, and related power transformer |
| CN102856116A (en) * | 2012-09-12 | 2013-01-02 | 辽宁省电力有限公司电力科学研究院 | Double floater and double contact gas relay |
| CN104134576A (en) * | 2014-07-16 | 2014-11-05 | 国家电网公司 | Three-pin reed switch type double-circuit trip node gas relay |
| CN204315458U (en) * | 2015-01-07 | 2015-05-06 | 国家电网公司 | Multi-functional pair of float Buchholz relay |
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|---|---|
| CN105826128A (en) | 2016-08-03 |
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