CN107036762A - High voltage current changer leakage inspector, combination unit and method - Google Patents
High voltage current changer leakage inspector, combination unit and method Download PDFInfo
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- CN107036762A CN107036762A CN201510450426.1A CN201510450426A CN107036762A CN 107036762 A CN107036762 A CN 107036762A CN 201510450426 A CN201510450426 A CN 201510450426A CN 107036762 A CN107036762 A CN 107036762A
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- high voltage
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- voltage current
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Abstract
The invention discloses relate to a kind of high voltage current changer leakage inspector and combination unit, the side wall in water-sensitive part one end and the left side of housing is connected, the other end is connected with shading sliding block, and shading sliding block is also connected with the left end of elastic component, the side wall connection on the right-hand member of elastic component and the right side of housing；Optical signal launch end is arranged on the side wall before housing or on the side wall behind housing；Optical signal receiving terminal is arranged on the side wall on optical signal transmitter opposite；Tensile strength is reduced after the quick people's material immersion of shading, and can be broken by elastic component, makes shading sliding block by the pulling force effect of elastic component to motion on the right side of housing；When the resistance balance of elastic component pulling force and shading sliding block, the stop motion of shading sliding block and the optical signal transmission between light transmitting terminal and optical signal receiving terminal can be covered.Combined the unit the invention also discloses a kind of high voltage current changer with leak water detdction and method.The present invention is convenient for installation and maintenance, can accurately detect high voltage current changer water leakage situation.
Description
Technical field
The invention belongs to power electronics and power system application field, more particularly to a kind of high voltage current changer leak
Detection means, combination unit and method.
Background technology
High voltage current changer is used to alternating voltage being transformed into DC voltage, or by DC voltage inverse transformation from exchange
Voltage.Include substantial amounts of power electronic devices in high voltage current changer, such as IGCT, IGBT.These
Power electronic devices operationally can power loss, give out substantial amounts of heat energy.In addition, in high voltage current changer
Some other thermal losses equipment are may also contain, such as reactor operationally can also give out substantial amounts of heat
Energy.In order to ensure in the normal operation of high voltage current changer, high voltage current changer generally using water cooling system to heating
Equipment is cooled down.In high voltage current changer, the water cooling system directly cooled down to heat-producing device is generally
Interior water cooling system, i.e. cooling water are sealed in cooling pipe, are flowed through after each heat-producing device on cooling water temperature
Rise, take heat out of transverter, carry out heat exchange by other methods outside transverter, make cooling water temperature
After reduction, then flow back to transverter progress next round cooling.Under normal circumstances, the cooling water in interior water cooling system
Water typically will not be lossy during circulating cooling.
However, the water cooling system of high voltage current changer generally has complicated water route and substantial amounts of water pipe head, deposit
In larger leak risk；As the number of devices run in power system is more and more, water cooling system leak
Case it is also more and more；Once water cooling system leak is likely to being in operation shape in high voltage current changer
The electrical equipment of state causes to seriously endanger, it is therefore desirable to set leakage inspector to realize to high voltage current changer water
The water leakage fault of cooling system is guarded.
Existing high voltage current changer water-leakage detecting system mainly has following several：
The first is to carry out leak water detdction using law of buoyancy.The system, which is used, is located at high voltage current changer bottom screen
The leak of transverter is pooled to the less open-topped leak inspection of a diameter by the leak catch tray covered in cover
Survey in cylinder；The both sides of leak water detdction cylinder correspond to respectively be fixed with two light transmitting optical cables and two light-receiving optical cables and
It is correspondingly arranged；It is provided with floating block, the upper surface of floating block and is fixed with along leak water detdction cylinder axial direction side in leak water detdction cylinder
To the long baffle plate for being used to block the optical signal for launching optical cable from light of extension.The upper end of baffle plate offers two
For the first elongated hole and the second elongated hole passed through respectively for the optical signal of two light transmitting optical cables.Under normal circumstances,
The optical signal of a pair of optical cables may pass through elongated hole and complete to send and receive.When the water cooling system leak of high voltage current changer
When, leak water detdction cylinder is collected into after leak and floating block can be made to float, so that the baffle plate above it accordingly floats, etc.
When baffle plate floats to certain altitude, elongated hole will cross the transmitting-receiving termination of optical cable, and the entity part of lower section can be blocked
The firmly optical signal transmission of optical cable.A pair of optical cables that optical signal is first blocked can send alarm signal to Control protection system
Number, after a pair of optical cables being blocked can send trip signal to Control protection system.There is following disadvantage in such a method
End：Baffle arrangement is more complicated above floating block, and the weight of whole floating block is larger, and floating block weight can be caused by adding baffle plate
Power inequality is tilted, and floating block there may be frictional force with detection cylinder inwall, only overcomes multiple by the buoyancy of floating block
The gravity and frictional force of miscellaneous structure, which are realized to float, has larger risk, can cause when leak occurs in water cooling system
When, water-leakage detecting system possibly can not delicately make a response.
Second is that the tipping bucket pouring number of times using being filled with water carries out leak water detdction to calculate water.I.e. in valve bottom
Leakage inspector is set in radome, and device includes tipping bucket, counterweight block, rotary shaft and collimation lens；When
When water product is full in tipping bucket, counterweight block can be driven to complete once inside out, water in bucket is poured out, circulated again, is counted
Number device statistics tipping bucket is it is determined that alarm signal that the upset number of times in the time calculates water leakage to determine transmission etc.
Level.The problem of such a method, is：Tipping bucket has certain altitude in itself, in order to which the cooling water of seepage is introduced into tipping bucket
It is interior that must the drainage plate of large area be set above tipping bucket, while enough height must be left in the lower section of tipping bucket
It is easy to the water inside tipping bucket to pour out, being needed below such transverter can be very for the space that water-leakage detecting system is reserved
Greatly；In addition, tipping bucket is per se with rotating shaft mechanism, after high voltage current changer longtime running, the rotating shaft mechanism of tipping bucket
Between it is possible that adhesion, can cause bucket tipping gear sensitivity decrease itself, so as to influence to leak cooling system
The detection of water failure.
The content of the invention
It is an object of the invention to provide a kind of high voltage current changer leakage inspector, combination unit and side
Method.The present invention is convenient for installation and maintenance, can accurately detect high voltage current changer water leakage fault.
In order to reach above-mentioned purpose, solution of the invention is：High voltage current changer leakage inspector, bag
Include housing, water-sensitive part 2, shading sliding block 3, elastic component 4, light transmitting terminal 5 and optical signal receiving terminal 6；Its
It is characterised by：The housing includes bottom surface, side wall and water-proof top cover；The top edge of the side wall is provided with blow vent
9, and fate has outlet pass 7 below；The area of the water-proof top cover is more than the area and energy of the cross section of housing
Prevent the water that top is fallen from being dripped from passage 9 into housing；The water-sensitive part, shading sliding block and elastic component position
In in housing；The side wall in described water-sensitive part one end and the left side of housing is connected, and the other end is connected with shading sliding block,
Shading sliding block is also connected with the left end of elastic component, the side wall connection on the right-hand member of elastic component and the right side of housing；
The optical signal launch end is arranged on the side wall before housing or on the side wall behind housing；
The optical signal receiving terminal is arranged on the side wall on optical signal transmitter opposite；
Tensile strength is reduced after the quick people's material immersion of the shading, and can be broken by elastic component, make shading sliding block by
Moved to the pulling force effect of elastic component to housing right side；
When the resistance balance of elastic component pulling force and shading sliding block, the shading sliding block stop motion and it can hide
The firmly optical signal transmission between light transmitting terminal and optical signal receiving terminal.
As further improved technical scheme of the present invention, water-sensitive part left end is connected by connector with side wall, water
Quick part right-hand member is connected by connector with shading sliding block, and shading sliding block is connected by connector with elastic component, elasticity
Part right-hand member is connected by connector with side wall.
As further improved technical scheme of the present invention, described is that connector is hook or link.
As further improved technical scheme of the present invention, pulley, shading are provided between shading sliding block and housing
Sliding block is slided by pulley along inner walls.
As further improved technical scheme of the present invention, the elastic component is spring or rubber band.
As further improved technical scheme of the present invention, at least one is set between inner walls and shading sliding block
Root water-sensitive part.
It is used as further improved technical scheme of the present invention, the water-proof top cover of high voltage current changer leakage inspector
Area be more than bottom surface area.
In order to reach above-mentioned purpose, second of solution of the invention is：High voltage current changer leak water detdction group
Attach together and put, it is characterised in that including the high voltage current changer leakage any one of at least two claim 1-7
Water detection means；The high voltage current changer is stacked in together successively from top to bottom with leakage inspector；Upper one
High voltage current changer is placed on adjacent next high voltage current changer leak water detdction with the bottom surface of leakage inspector
On the water-proof top cover of device.
It is used as further improved technical scheme of the present invention, the bottom of a upper high voltage current changer leakage inspector
Face and adjacent next high voltage current changer are with the company of being bolted between the water-proof top cover of leakage inspector
Connect.
In order to reach above-mentioned purpose, the third solution of the invention is：It is a kind of to use above-mentioned high-voltage commutation
The high voltage current changer leakage detection method of device leakage inspector.
In order to reach above-mentioned purpose, the 4th kind of solution of the invention is：It is a kind of to use above-mentioned high-voltage commutation
The high voltage current changer leakage detection method that device is combined the unit with leak water detdction.
One end of inventive shell inwall, water-sensitive part, shading sliding block, elastic component, inner walls the other end according to
It is secondary to be connected；Near elastic component, with being punched on the housing of the vertical direction of elastic component bearing of trend and being equiped with light
Signal hair, receiving end；The top of housing links into an integrated entity with water-proof top cover, and housing is collectively forming one with water-proof top cover
Individual cavity；Shading sliding block can be slided in enclosure interior cavity along inner walls；Shading sliding block in water-sensitive part and
The left and right pulling force collective effect of elastic component is issued to balance, rests on medium position in housing, this optical signal hair,
Receiving end is not stopped that the hair that can smoothly complete optical signal is received by shading material；Tension is strong after the water-sensitive part immersion
Degree can be substantially reduced, and under the pulling force of elastic component, water-sensitive part is easily pulled off, and shading sliding block is by elastic component
Pulling force is moved to elastic component direction, stops the normal transmission of optical signal between optical signal hair, receiving end, realizes that light is believed
Number displacement.
Further, in order to easy to connect, the two ends inwall of device, the two ends of shading sliding block, water-sensitive part two
End, the two ends of elastic component are both provided with hook or link.In order to reduce the resistance that shading sliding block is subject in slip,
Pulley is installed respectively in the upper and lower sides of shading sliding block or front and rear side.Rational width is set for shading sliding block, makes water
After quick part chance water is broken by elastic component, sliding block is slided towards elastic component direction, can cover optical signal hair, sending end
Between signal transmission.Shading sliding block can not also be on optical signal hair, receiving end line, when water-sensitive part immersion quilt
It is moved to after breaking between optical signal hair, receiving end.Above-mentioned elastic component is spring or rubber band or other
With obvious elastic material.One or more water-sensitive part can be set between inner walls and shading sliding block.
In order that the coolant of seepage smoothly enters enclosure interior, through hole is provided with housing bottom, is provided with housing upper
Passage.In order that the coolant of seepage will not enter enclosure interior, water-proof top cover from the passage of housing upper
Area be more than housing bottom surface area.Water-proof top cover and housing bottom are equipped with fixing threaded hole, and the hole of fixing threaded hole
Worked in coordination away from, size, it is possible to achieve the laminated multi-layer of leakage inspector.The high voltage current changer leak
Tensile strength is substantially reduced after detection means is soaked using water-sensitive part, by the spy being easily pulled off after fixed pulling force
Point realizes leak water detdction to drive detection signal to conjugate.
The beneficial effects of the invention are as follows there is provided a kind of high voltage current changer leakage inspector, water-sensitive part is utilized
Tensile strength is substantially reduced after immersion, is driven detection signal to become by the characteristics of being easily pulled off after pulling force is fixed
Realize leak water detdction in position；The device is convenient for installation and maintenance, can accurately detect high voltage current changer water leakage situation.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the overlooking the structure diagram after removing water-proof top cover in Fig. 1.
Fig. 3 is the structural representation of the embodiment of the present invention 1.
Embodiment
Below with reference to accompanying drawing, technical scheme and beneficial effect are described in detail.
Embodiment 1
Referring to Fig. 1, Fig. 2, this high voltage current changer leakage inspector, including housing, water-sensitive part 2, screening
Smooth piece 3, elastic component 4, light transmitting terminal 5 and optical signal receiving terminal 12；：The housing 1 include bottom surface,
Side wall and water-proof top cover 11；The top edge of the side wall is provided with blow vent 9, and following fate has outlet pass 7；Institute
State water-proof top cover 11 area be more than housing 1 cross section area and the water that falls of top can be prevented from ventilation
Hole 9 is dripped into housing 1；The water-sensitive part 2, shading sliding block 3 and elastic component 4 are located in housing 1；Institute
State the one end of water-sensitive part 2 to be connected with the side wall in the left side of housing 1, the other end is connected with shading sliding block 3, shading is slided
Left end of the block 3 also with elastic component 4 is connected, and the right-hand member of elastic component 4 is connected with the side wall on the right side of housing 1；Institute
Optical signal launch end 5 is stated on the side wall before housing 1 or on the side wall behind housing 1；
The optical signal receiving terminal 12 is arranged on the side wall on the opposite of optical signal transmitter 5；The water-sensitive part 2 soaks
Tensile strength is reduced afterwards, and can be broken by elastic component 4, makes shading sliding block 3 by the pulling force effect of elastic component 4
And moved to the right side of housing 1；When the resistance balance of the pulling force of elastic component 4 and shading sliding block 3, the shading is slided
The stop motion of block 3 and the optical signal transmission between light transmitting terminal 5 and optical signal receiving terminal 12 can be covered.
Preferably, the left end of water-sensitive part 2 is connected by connector with side wall, and the right-hand member of water-sensitive part 2 passes through even
Fitting is connected with shading sliding block 3, and shading sliding block 3 is connected by connector with elastic component 4, the right-hand member of elastic component 4
It is connected by connector with side wall.Described is that connector is hook or link.Shading sliding block 4 and housing 1 it
Between be provided with pulley 6, shading sliding block 4 by pulley 6 along the inwall of housing 1 slide.The elastic component 4 is spring
Or rubber band.At least one water-sensitive part 2 is set between the inwall of housing 1 and shading sliding block 3.Water-proof top cover
11 area is more than the area of the bottom surface of housing 1.
One end of inner walls, water-sensitive part, shading sliding block, elastic component, the other end of inner walls are sequentially connected.
Near elastic component, sent out with optical signal is punched and be equiped with the housing of the vertical direction of elastic component bearing of trend,
Receiving end.The top of housing links into an integrated entity with water-proof top cover, and housing is collectively forming a cavity with water-proof top cover.
Shading sliding block can be slided in enclosure interior cavity along inner walls.Shading sliding block is in water-sensitive part and elastic component
Left and right pulling force collective effect is issued to balance, rests on medium position in housing, and this optical signal hair, receiving end are not
Stopped that the hair that can smoothly complete optical signal is received by shading material.Tensile strength can be big after the water-sensitive part immersion
Big reduction, under the pulling force of elastic component, water-sensitive part is easily pulled off, shading sliding block by elastic component pulling force to
Elastic component direction is moved, and is covered the normal transmission of optical signal between optical signal hair, receiving end, is realized the change of optical signal
Position.
The two ends of quick material, the two ends of elastic component are both provided with hook or link, and hook can also be closed using surrounding
The hook of conjunction or other connectors, as long as can be reliably connected between can guarantee that each critical piece.In housing
One or more water-sensitive part can be set between inwall and shading sliding block, in order to ensure inner walls to shading sliding block
Tension equalizer, arrange water-sensitive part position also will equilibrium.Water-proof top cover and housing bottom are equipped with fixing threaded hole
81st, 82, and pitch-row, the size of fixing threaded hole work in coordination, it is possible to achieve the laminated multi-layer of leakage inspector.
The technological thought of above example only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this,
It is every according to technological thought proposed by the present invention, any change done on the basis of technical scheme each falls within this
Within invention protection domain.
Embodiment 2
Referring to Fig. 3, this high voltage current changer is combined the unit with leak water detdction, including at least two claim 1-7
Any one of high voltage current changer leakage inspector；The high voltage current changer with leakage inspector from
It is stacked in successively together under above；A upper high voltage current changer is placed on adjacent with the bottom surface of leakage inspector
On the water-proof top cover of next high voltage current changer leakage inspector.A upper high voltage current changer leak water detdction
Pass through spiral shell between the water-proof top cover of the bottom surface of device and adjacent next high voltage current changer leakage inspector
Bolt is fixedly connected.High voltage current changer is same as Example 1 with leak water detdction combination unit, is no longer described in detail.
Three layers of device are overlayed in the water leg of transverter bottommost shown in Fig. 3, the leakage inspector of the bottom
It is fixed on and is catchmented in groove bottom by screw 81, ensures shading sliding block 3 by (or the rubber of elastic component 4
Muscle etc. have obvious elastic force object) horizontal pull after can smoothly slide；The leak being collected into water leg
Entered by the through hole 7 of device bottom inside housing 1, as water level rises after the height for reaching water-sensitive part 2,
Water-sensitive part will be soaked and its intensity is substantially reduced, water-sensitive part 1 is pulled off under the pulling force effect of elastic component 4,
There is imbalance in the horizontal force of shading sliding block 3, under the pulling force effect of elastic component 4, is shunk toward elastic component
Direction is slided, and eventually settles at a stable position, optical signal is sent out, the optical signal that receiving end 5 is transmitted hides
Block, the optical signal that control protective unit one is directly received is disappeared, occur in that signal is conjugated, so as to control to protect
Protection unit judges that the water level of water cooling system leak reaches the height of water-sensitive part.
The top of every layer of device is all provided with passage 9, it is ensured that the cooling water of seepage can successfully from perforate 7 not
Flow into disconnectedly inside housing 1.The bottom surface of shading sliding block 3 or two opposites can be set or multiple faces can be set
Appropriate size and the pulley of number 6, allow shading sliding block more successfully to be slided along inner walls.Elastic component
It can be spring, can also be replaced by other materials with substantially elasticity of such as rubber band etc.Every layer of dress
The top put is both provided with water-proof top cover 11, one week of the casing elevation of water-proof top cover and device by welding or
The modes such as adhesion are connected as one.The projected area of water-proof top cover is more than the projected area of device case, so as to
The generation malfunction of water-sensitive part is soaked into device case to prevent the water fallen from above from directly being dripped from passage 9.
As shown in Figure 3, the leakage inspector that three stackings are put is triggered successively in water level uphill process, backstage
The leak alarm signal of three kinds of different orders of severity can be quoted respectively, or even sends unit trip order：Three
Optical signal simultaneously in the presence of, sent on control protective unit no alarm signal；When first optical signal disappears, report leakage
Water caution signal；When first, second optical signal all disappears, serious leak warning is reported；Three optical signal wholes
During disappearance, trip signal is reported.So that operation maintenance personnel can accurately judge the increase of the seriousness and water of water leakage situation
Situation is simultaneously handled in time.Can also be as needed, more laminations are set.
Redundant configuration can be carried out to leakage inspector.Two sets of identical leakage inspectors are placed on same ponding
In plane, just think really to detect leak event when optical signal displacement all occur in two leakage inspectors
Barrier, to prevent the quality problems of leakage inspector in itself from causing erroneous judgement of the control protective unit to water leakage situation.
Embodiment 3
This high voltage current changer leakage detection method, using the high voltage current changer leak water detdction described in embodiment 1
Device realizes that concrete scheme is no longer described in detail referring to embodiment 1.
Embodiment 4
This high voltage current changer leakage detection method, using the high voltage current changer leak water detdction described in embodiment 2
Combination unit realizes that concrete scheme is no longer described in detail referring to embodiment 2.
Claims (11)
1. a kind of high voltage current changer leakage inspector, including housing, water-sensitive part, shading sliding block, elasticity
Part, light transmitting terminal and optical signal receiving terminal；It is characterized in that：The housing includes bottom surface, side wall and waterproof
Top cover；The top edge of the side wall is provided with blow vent, and following fate has outlet pass；The face of the water-proof top cover
Product is more than the area of the cross section of housing and can prevent the water that top is fallen from being dripped from passage into housing；It is described
Water-sensitive part, shading sliding block and elastic component are located in housing；The side wall in described water-sensitive part one end and the left side of housing connects
Connect, the other end is connected with shading sliding block, shading sliding block is also connected with the left end of elastic component, the right-hand member of elastic component with
The side wall connection on the right side of housing；
The optical signal launch end is arranged on the side wall before housing or on the side wall behind housing；
The optical signal receiving terminal is arranged on the side wall on optical signal transmitter opposite；
Tensile strength is reduced after the quick people's material immersion of the shading, and can be broken by elastic component, make shading sliding block by
Moved to the pulling force effect of elastic component to housing right side；
When the resistance balance of elastic component pulling force and shading sliding block, the shading sliding block stop motion and it can hide
The firmly optical signal transmission between light transmitting terminal and optical signal receiving terminal.
2. high voltage current changer leakage inspector according to claim 1, it is characterised in that：Water-sensitive
Part left end is connected by connector with side wall, and water-sensitive part right-hand member is connected by connector with shading sliding block, and shading is slided
Block is connected by connector with elastic component, and elastic component right-hand member is connected by connector with side wall.
3. high voltage current changer leakage inspector according to claim 2, it is characterised in that：It is described
It is hook or link for connector.
4. the high voltage current changer leakage inspector according to claim 1 or 2 or 3, its feature exists
In：Pulley is provided between shading sliding block and housing, shading sliding block is slided by pulley along inner walls.
5. the high voltage current changer leakage inspector according to claim or 2 or 3, it is characterised in that：
The elastic component is spring or rubber band.
6. the high voltage current changer leakage inspector according to claim 1 or 2 or 3, its feature exists
In：At least one water-sensitive part is set between inner walls and shading sliding block.
7. the high voltage current changer leakage inspector according to claim 1 or 2 or 3, its feature exists
In：The area of the water-proof top cover of high voltage current changer leakage inspector is more than the area of bottom surface.
8. a kind of high voltage current changer is combined the unit with leak water detdction, it is characterised in that will including at least two rights
Seek the high voltage current changer leakage inspector any one of 1-7；The high voltage current changer leak water detdction
Device is stacked in together successively from top to bottom；A upper high voltage current changer is placed on the bottom surface of leakage inspector
On the water-proof top cover of adjacent next high voltage current changer leakage inspector.
9. high voltage current changer leakage inspector according to claim 1, it is characterised in that：Upper one
Individual high voltage current changer is filled with the bottom surface of leakage inspector with adjacent next high voltage current changer with leak water detdction
It is bolted to connection between the water-proof top cover put.
10. a kind of height of the high voltage current changer leakage inspector any one of use claim 1-7
Press transverter leakage detection method.
11. the high voltage current changer any one of a kind of use claim 8-9 is combined the unit with leak water detdction
High voltage current changer leakage detection method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510450426.1A CN107036762A (en) | 2015-07-28 | 2015-07-28 | High voltage current changer leakage inspector, combination unit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510450426.1A CN107036762A (en) | 2015-07-28 | 2015-07-28 | High voltage current changer leakage inspector, combination unit and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107036762A true CN107036762A (en) | 2017-08-11 |
Family
ID=59532919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510450426.1A Pending CN107036762A (en) | 2015-07-28 | 2015-07-28 | High voltage current changer leakage inspector, combination unit and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107036762A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307940A (en) * | 2019-06-21 | 2019-10-08 | 许继集团有限公司 | Converter valve valve tower and its leakage inspector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0472536A (en) * | 1990-07-13 | 1992-03-06 | San'eisha Mfg Co Ltd | Leak-in water display unit for closed container |
| CN202657977U (en) * | 2012-04-11 | 2013-01-09 | 深圳市汉斯顿净水设备有限公司 | Water purifier leakage automatic water-break device |
| CN103900765A (en) * | 2014-04-15 | 2014-07-02 | 吴江市赛纳电子科技有限公司 | Water leakage detecting device for water meter |
| CN205067017U (en) * | 2015-07-28 | 2016-03-02 | 南京南瑞继保电气有限公司 | High pressure is water leakage detection device and composite set for transverter |
-
2015
- 2015-07-28 CN CN201510450426.1A patent/CN107036762A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0472536A (en) * | 1990-07-13 | 1992-03-06 | San'eisha Mfg Co Ltd | Leak-in water display unit for closed container |
| CN202657977U (en) * | 2012-04-11 | 2013-01-09 | 深圳市汉斯顿净水设备有限公司 | Water purifier leakage automatic water-break device |
| CN103900765A (en) * | 2014-04-15 | 2014-07-02 | 吴江市赛纳电子科技有限公司 | Water leakage detecting device for water meter |
| CN205067017U (en) * | 2015-07-28 | 2016-03-02 | 南京南瑞继保电气有限公司 | High pressure is water leakage detection device and composite set for transverter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307940A (en) * | 2019-06-21 | 2019-10-08 | 许继集团有限公司 | Converter valve valve tower and its leakage inspector |
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Application publication date: 20170811 |