CN105910679B - A kind of cable duct of substation water level monitoring alarm system and monitoring method - Google Patents
A kind of cable duct of substation water level monitoring alarm system and monitoring method Download PDFInfo
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- CN105910679B CN105910679B CN201610260585.XA CN201610260585A CN105910679B CN 105910679 B CN105910679 B CN 105910679B CN 201610260585 A CN201610260585 A CN 201610260585A CN 105910679 B CN105910679 B CN 105910679B
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- conduit
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- cable duct
- water level
- fixed link
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/56—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements
- G01F23/60—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements using electrically actuated indicating means
- G01F23/603—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements using electrically actuated indicating means using electromechanically actuated indicating means
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Level Indicators Using A Float (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a kind of cable duct of substation water level monitoring alarm system and monitoring methods, including the conduit protruded into water on cable duct side wall is arranged in by bracket, setting bottom has the mandril of float in the conduit, pine hair switch is equipped with by fixed link in the conduit, the pine hair switch is connect with programmable controller, and the programmable controller is connected with combined aural and visual alarm.The wireless communication module uses GPRS communication module.The conduit lower end is equipped with filter mechanism.The system alarm is accurate, long service life, uses fault-free for a long time.
Description
Technical field
The present invention relates to cable duct of substation water-level alarm equipment technical field, in particular to a kind of substation cable ditch-water
Position monitor and alarm system and monitoring method.
Background technique
Currently, cable duct of substation has the following problems.1, substation carries out unattended, and a centralized control center monitors
Many substations, and substation is both dispersed in each place.Flood season checks heavy workload.2, right respectively in thunderstorm season
The cable duct at each station carries out inspection of flood defense, but also to carry out other inspections, and there are many cable duct distribution at each station,
It checks one by one, considerably increases workload and the working time of staff in this way, also increase working strength, influence work
Efficiency.3, it is unable to warning reminding monitoring personnel when usually cable duct seeps water, only can just be found the problem when routine inspection,
There is also very big security risks in this way.Generally speaking, existing cloud embroiders cable duct of substation and is distributed in whole station everywhere, although there is water level
Observation point, but have to open cable channel cover plate everywhere respectively, it is observed using visual method.Only in special tour Shi Caihui
It checks one by one, usually monitoring cannot reach all the period of time, cannot be in discovery alarm in time when something goes wrong.Substation female person on duty exists
Opening cable duct, there are strength deficiencies, vulnerable to wound.The reason of above-mentioned phenomenon occur is: substation inspection substantially leans on manpower
Range estimation, and artificially judge to be checked again according to factors such as weather.The news phase checks heavy workload, if it is rainy day flip plate, easily
Cause injury to personnel.Shortage of manpower is monitored, carries out substitution personnel inspection without correlation new technology.
CN201220326651.6 discloses a kind of cable duct of substation water level remote alarming device, including water level switch,
Data source, data sink and alarm device, the water level switch are connected by conducting wire with the data source, the number
It is connect by conducting wire with the alarm according to receiver.Since water level switch is arranged in the utility model in cable duct, water level is opened
It closes and is connected by conducting wire with the data source, switch is set on data source, for preventing water level excessively high, data transmitting
Device is connected for a long time, makes the damage of twin installation, to avoid system from connecting for a long time, while be can be also used in other than flood season and being disconnected institute
Switch is stated, service life of equipment is extended.Waterproof rubber sleeve is set on the outside of data source, can prevent rainwater from immersing data transmitting
Device causes line short, and data sink is connect by conducting wire with the alarm, and person on duty can supervise in real time in duty room
Measure cable duct water level.For another example CN201310600403.5 discloses a kind of electricity substation cable duct water level detecting alarm dress
It sets, including the high water level detecting head and low water level detecting head being mounted in cable trench, the position of low water level detecting head is lower than height
The position of water level probe, wherein low water level detecting head is connected with low water level sender unit, and high water level detecting head is connected with height
Water level signal transmitter, while low water level sender unit and high water level sender unit are wirelessly connected with monitor controller
It connects.Disadvantage is that: above-mentioned water level probe is installed in cable duct, there is many large-scale generators, transformation in substation
Device etc., the magnetic field that generator, transformer are formed seriously affects the accuracy of tester, more importantly above-mentioned water level probe
Equal precision detections instrument is installed under water, service life as one can imagine, general one or two months need to overhaul once, and failure rate rate
Height occurs 10 failures, and rate of false alarm height several times for 1 year, and rate of false alarm is 40%.
Summary of the invention
In view of this, in view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of cable duct of substation water level prisons
Alarm system and monitoring method are surveyed, the system alarm is accurate, long service life, uses fault-free for a long time.
In order to achieve the above objectives, the invention adopts the following technical scheme: a kind of cable duct of substation water level monitoring alarm system
System, including the conduit protruded into water on cable duct side wall is arranged in by bracket, setting bottom has float in the conduit
Mandril, the conduit is interior to be switched by fixed link equipped with pine hair, and the pine sends out switch and connect with programmable controller, described to compile
Range controller is connected with combined aural and visual alarm.
The wireless communication module uses GPRS communication module.
The conduit lower end is equipped with filter mechanism.
The filter mechanism is several the filter hole that conduit lower end side is arranged in.
The mandril is hollow structure.
The conduit upper end is equipped with rainhat.
The conduit lower end is equipped with filter hole self-cleaning mechanism.
The filter hole self-cleaning mechanism includes the brush body being rotatablely connected under conduit being arranged in and by fixed link and conduit
The driving mechanism of connection.
The driving mechanism includes being fixed on supravasal sliding sleeve and the slide bar in sliding sleeve, and the slide bar, which is equipped with, to be turned
The impeller of dynamic connection, the slide bar lower part are hollow structure, and the fixed link is equipped with the drive shaft being rotatablely connected with fixed link,
Driving gear in drive shaft is engaged with the gear being sleeved on brush body, and the shaft and driving axis of the impeller are driven.
The line transmission is driven using rubber rope.
Reversing mechanism is arranged in the shaft of the impeller.
The reversing mechanism is the lower bevel gear of the bevel gear being arranged on impeller shaft and bevel gear engagement.
The rubber rope is made of the raw material of following parts by weight, 65~80 parts of neoprene, 30~50 parts of butadiene-styrene rubber, oxygen
Change 2~5 parts of magnesium, 3~5 parts of zeolite powder, 5~10 parts of carbon black, 7~11 parts of paraffin, 3~6 parts of stearic acid, 3~7 parts of nylon fiber,
6~8 parts of m-xylene diamine.
Bristle is equipped on the inside of the brush body.
Cable duct of substation water level monitoring method: when water level is higher than setting value, float drives mandril to move up, on mandril
Shifting touches pine hair switch, and pine hair switch connection, periphery personnel are reminded in combined aural and visual alarm work, while programmable controller is examined
The signal of pine hair switch is measured, water level information is sent power monitoring backstage by wireless communication module.
Beneficial effects of the present invention: if the water level in cable duct is more than setting value, float drives mandril to move up, mandril
It is contacted with pine hair switch contact, programmable controller detects that pine hair switch connection, programmable controller control combined aural and visual alarm
Work prompts the staff of substation side；GPRS communication module transfers data to monitoring backstage, background work people simultaneously
Member notifies patrol officer；Controller transmits information to backstage by wireless communication module at this time, and conduit has filter hole certainly
Cleaning mechanism, when cable duct water flowing, wheel rotation drives brush body rotation, the sundries in filter hole is cleared up, while water will be miscellaneous
Object is taken away.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of driving mechanism of the present invention.
Specific embodiment
Embodiment 1: as shown in Figure 1, a kind of cable duct of substation water level monitoring alarm system, including be arranged by bracket 3
Protrude into the conduit 7 in water on cable duct side wall, setting bottom has a mandril 6 of float 8 in the conduit 7, in the conduit 7
It is equipped with pine hair switch 5 by fixed link, the pine hair switch 5 is connect with programmable controller 4, the programmable controller connection
Sound light crossing-signal.
The programmable controller is connected with wireless communication module, and the wireless communication module 4 uses GPRS communication module.
7 lower end of conduit is equipped with filter mechanism.
The filter mechanism is the filter screen that conduit lower end is arranged in, and prevents the sundries such as leaf from entering conduit, obstruction conduit.
The mandril 6 is hollow structure, and mandril is light, is jacked up convenient for float.
7 upper end of conduit be equipped with rainhat, rainhat be it is mushroom-shaped, prevent the sundries such as rainwater from entering water pipe, blocking is led
Pipe or damage pine hair switch, are more more wanted, rainhat has the gas-guide tube being connected to conduit, convenient for the mandril in conduit
It moves up and down.
Cable duct of substation water level monitoring method: when water level is higher than setting value, float drives mandril to move up, on mandril
Shifting touches pine hair switch, and pine hair switch connection, periphery personnel are reminded in combined aural and visual alarm work, while programmable controller is examined
The signal of pine hair switch is measured, water level information is sent power monitoring backstage by wireless communication module.
Embodiment 2: as shown in Figure 1, 2, a kind of cable duct of substation water level monitoring alarm system, including set by bracket 3
The conduit 7 protruded into water on cable duct side wall is set, setting bottom has the mandril 6 of float 8, the conduit 7 in the conduit 7
Interior to be equipped with pine hair switch 5 by fixed link, the pine hair switch 5 is connect with programmable controller 4, and the programmable controller connects
It is connected to combined aural and visual alarm.
The wireless communication module 4 uses GPRS communication module.
7 lower end of conduit is equipped with filter mechanism.
The filter mechanism is the filter screen that conduit lower end is arranged in, and prevents the sundries such as leaf from entering conduit, obstruction conduit.
The mandril 6 is hollow structure, and mandril is light, is jacked up convenient for float.
7 upper end of conduit is equipped with rainhat, prevents the sundries such as rainwater from entering water pipe, obstruction conduit or damage Song Fakai
It closes.
The conduit lower end is equipped with filter hole self-cleaning mechanism.
The filter hole self-cleaning mechanism include be arranged under conduit 7 be rotatablely connected brush body 14 and by fixed link 21 with
The driving mechanism that conduit 7 connects.Bearing 13 is set on conduit, bearing outer ring is equipped with brush body, and brush body is strip structure, and being convenient for will
Sundries in filter hole is cleared up away, and is fallen convenient for foreign matter.
The driving mechanism includes the sliding sleeve 19 being fixed on conduit 7 and the slide bar 18 in sliding sleeve, the slide bar 18
It is equipped with the impeller 16 of rotation connection, the slide bar lower part is hollow structure, and the fixed link 21 is equipped with and 21 turns of fixed link
The drive shaft 11 of connection is moved, the driving gear 12 in drive shaft 11 is engaged with the gear 2 being sleeved on brush body, the impeller 16
Shaft 17 and 11 line of drive shaft are driven.
Slide bar lower part is that hollow structure makes the lower portion of impeller in the water surface, and water 20 is able to drive impeller in flowing and turns
It is dynamic, while will drive impeller when the water surface rises or falls and rising or falling, slide bar lower part is that hollow structure can guarantee leaf
The lower half of wheel is in the water surface in real time, to guarantee that impeller can be by water-driven.
The line transmission is driven using rubber rope 10, guarantees to mention for brush body while capable of rising or drop convenient for impeller
For transfer motion power.
Reversing mechanism is arranged in the shaft of the impeller.
The reversing mechanism is the lower bevel gear of the bevel gear being arranged on impeller shaft and bevel gear engagement, reduces transmission
Resistance.
Bristle 15 is equipped on the inside of the brush body, convenient for by the eliminating impurities in filter hole.
The rubber rope is made of the raw material of following parts by weight, 65 parts of neoprene, 30 parts of butadiene-styrene rubber, 3 parts of magnesia,
3 parts of zeolite powder, 5 parts of carbon black, 7 parts of paraffin, 3 parts of stearic acid, 3 parts of nylon fiber, 6 parts of m-xylene diamine.
Embodiment 3: as shown in Figure 1, 2, a kind of cable duct of substation water level monitoring alarm system, including set by bracket 3
The conduit 7 protruded into water on cable duct side wall is set, setting bottom has the mandril 6 of float 8, the conduit 7 in the conduit 7
Interior to be equipped with pine hair switch 5 by fixed link, the pine hair switch 5 is connect with programmable controller 4, and the programmable controller connects
It is connected to combined aural and visual alarm.
The wireless communication module 4 uses GPRS communication module.
7 lower end of conduit is equipped with filter mechanism.
The filter mechanism is the filter screen that conduit lower end is arranged in, and prevents the sundries such as leaf from entering conduit, obstruction conduit.
The mandril 6 is hollow structure, and mandril is light, is jacked up convenient for float.
7 upper end of conduit is equipped with rainhat, prevents the sundries such as rainwater from entering water pipe, obstruction conduit or damage Song Fakai
It closes.
The conduit lower end is equipped with filter hole self-cleaning mechanism.
The filter hole self-cleaning mechanism include be arranged under conduit 7 be rotatablely connected brush body 14 and by fixed link 21 with
The driving mechanism that conduit 7 connects.Bearing 13 is set on conduit, bearing outer ring is equipped with brush body, and brush body is strip structure, and being convenient for will
Sundries in filter hole is cleared up away, and is fallen convenient for foreign matter.
The driving mechanism includes the sliding sleeve 19 being fixed on conduit 7 and the slide bar 18 in sliding sleeve, the slide bar 18
It is equipped with the impeller 16 of rotation connection, the slide bar lower part is hollow structure, and the fixed link 21 is equipped with and 21 turns of fixed link
The drive shaft 11 of connection is moved, the driving gear 12 in drive shaft 11 is engaged with the gear 2 being sleeved on brush body, the impeller 16
Shaft 17 and 11 line of drive shaft are driven.
Slide bar lower part is that hollow structure makes the lower portion of impeller in the water surface, and water 20 is able to drive impeller in flowing and turns
It is dynamic, while will drive impeller when the water surface rises or falls and rising or falling, slide bar lower part is that hollow structure can guarantee leaf
The lower half of wheel is in the water surface in real time, to guarantee that impeller can be by water-driven.
The line transmission is driven using rubber rope 10, guarantees to mention for brush body while capable of rising or drop convenient for impeller
For transfer motion power.
Reversing mechanism is arranged in the shaft of the impeller.
The reversing mechanism is the lower bevel gear of the bevel gear being arranged on impeller shaft and bevel gear engagement, reduces transmission
Resistance.
Bristle 15 is equipped on the inside of the brush body, convenient for by the eliminating impurities in filter hole.
The rubber rope is made of the raw material of following parts by weight, 80 parts of neoprene, 50 parts of butadiene-styrene rubber, 5 parts of magnesia,
5 parts of zeolite powder, 10 parts of carbon black, 11 parts of paraffin, 6 parts of stearic acid, 7 parts of nylon fiber, 8 parts of m-xylene diamine.
Embodiment 4: as shown in Figure 1, 2, a kind of cable duct of substation water level monitoring alarm system, including set by bracket 3
The conduit 7 protruded into water on cable duct side wall is set, setting bottom has the mandril 6 of float 8, the conduit 7 in the conduit 7
Interior to be equipped with pine hair switch 5 by fixed link, the pine hair switch 5 is connect with programmable controller 4, and the programmable controller connects
It is connected to combined aural and visual alarm.
The wireless communication module 4 uses GPRS communication module.
7 lower end of conduit is equipped with filter mechanism.
The filter mechanism is the filter screen that conduit lower end is arranged in, and prevents the sundries such as leaf from entering conduit, obstruction conduit.
The mandril 6 is hollow structure, and mandril is light, is jacked up convenient for float.
7 upper end of conduit is equipped with rainhat, prevents the sundries such as rainwater from entering water pipe, obstruction conduit or damage Song Fakai
It closes.
The conduit lower end is equipped with filter hole self-cleaning mechanism.
The filter hole self-cleaning mechanism include be arranged under conduit 7 be rotatablely connected brush body 14 and by fixed link 21 with
The driving mechanism that conduit 7 connects.Bearing 13 is set on conduit, bearing outer ring is equipped with brush body, and brush body is strip structure, and being convenient for will
Sundries in filter hole is cleared up away, and is fallen convenient for foreign matter.
The driving mechanism includes the sliding sleeve 19 being fixed on conduit 7 and the slide bar 18 in sliding sleeve, the slide bar 18
It is equipped with the impeller 16 of rotation connection, the slide bar lower part is hollow structure, and the fixed link 21 is equipped with and 21 turns of fixed link
The drive shaft 11 of connection is moved, the driving gear 12 in drive shaft 11 is engaged with the gear 2 being sleeved on brush body, the impeller 16
Shaft 17 and 11 line of drive shaft are driven.
Slide bar lower part is that hollow structure makes the lower portion of impeller in the water surface, and water 20 is able to drive impeller in flowing and turns
It is dynamic, while will drive impeller when the water surface rises or falls and rising or falling, slide bar lower part is that hollow structure can guarantee leaf
The lower half of wheel is in the water surface in real time, to guarantee that impeller can be by water-driven.
The line transmission is driven using rubber rope 10, guarantees to mention for brush body while capable of rising or drop convenient for impeller
For transfer motion power.
Reversing mechanism is arranged in the shaft of the impeller.
The reversing mechanism is the lower bevel gear of the bevel gear being arranged on impeller shaft and bevel gear engagement, reduces transmission
Resistance.
Bristle 15 is equipped on the inside of the brush body, convenient for by the eliminating impurities in filter hole.
The rubber rope is made of the raw material of following parts by weight, 80 parts of neoprene, 50 parts of butadiene-styrene rubber, 5 parts of magnesia,
5 parts of zeolite powder, 10 parts of carbon black, 11 parts of paraffin, 6 parts of stearic acid, 7 parts of nylon fiber, 8 parts of m-xylene diamine.
Cable trench cover filters water, is equipped with filter screen outside system of the invention, plays the role of secondary filter, improves system
Operation stability.
As embodiment 2,3,4 it is found that rubber rope made from embodiment 2,3,4 is able to satisfy the demand that the present invention is driven, more
For it is important to not influence the rise and fall of impeller；The main reason is that suitable zeolite is added in formula of the invention
Powder, zeolite powder hollow structure make the density of rubber close to water density (rubber rope formula 1,2,3 make rubber density be respectively
0.97g/cm³,0.999g/cm³,1.09g/cm³).The present invention uses dedicated rubber rope, and rubber rope softness is convenient for above and below slide bar
It is mobile, while the radial torsion of rubber rope is big, wheel rotation can be made to drive rubber rope rotation, and then rubber rope drives drive shaft
Rotation guarantees brush body rotation convenient for cleaning filter hole；More importantly the density of rubber rope is located in water close to the density of water
In suspended state, moving up and down for impeller is not influenced, to guarantee that the lower half of impeller is located in the water surface in real time, and then guarantees water
Impeller rotates while flowing, and machine driving of the invention, and rate of false alarm is zero in 1 year after tested, fault-free；It adopts
With rubber rope in the prior art, rubber rope is easy in water, influences transmission performance, more importantly the prior art
The softness of rubber rope and radial torque forces are insufficient, are not able to satisfy the demand of transmission, and the rubber rope of the prior art is not durable,
It is tested through inventor, under identical torsion, rotates identical circle number, rubber rope testing 1000 times of the prior art are just broken, and
It is not also broken using of the invention rubber rope testing 10000 times.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, this field is common
Other modifications or equivalent replacement that technical staff makes technical solution of the present invention, without departing from technical solution of the present invention
Spirit and scope, be intended to be within the scope of the claims of the invention.
Claims (4)
1. a kind of cable duct of substation water level monitoring alarm system, it is characterised in that: including being arranged by bracket in cable duct side
The conduit in water is protruded on wall, setting bottom has the mandril of float in the conduit, is equipped in the conduit by fixed link
Pine hair switch, the pine hair switch are connect with programmable controller, and the programmable controller is connected with combined aural and visual alarm；It is described
Conduit lower end is equipped with filter mechanism, and the filter mechanism is several the filter hole that conduit lower end side is arranged in；It is described to lead
Pipe lower end is equipped with filter hole self-cleaning mechanism, and the filter hole self-cleaning mechanism includes that the brush body being rotatablely connected under conduit is arranged in
With the driving mechanism being connect by fixed link with conduit；The driving mechanism includes being fixed on supravasal sliding sleeve and positioned at sliding sleeve
Interior slide bar, the slide bar are equipped with the impeller of rotation connection, and the slide bar lower part is hollow structure, and the fixed link is equipped with
With the drive shaft of fixed link rotation connection, the driving gear in drive shaft is engaged with the gear being sleeved on brush body, the impeller
Shaft and driving axis be driven.
2. cable duct of substation water level monitoring alarm system as described in claim 1, it is characterised in that: the PLC technology
Device is connected with wireless communication module, and the wireless communication module uses GPRS communication module.
3. cable duct of substation water level monitoring alarm system as claimed in claim 2, it is characterised in that: the mandril is hollow
Structure.
4. cable duct of substation water level monitoring alarm system as claimed in claim 3, it is characterised in that: the line transmission uses
Special (purpose) rubber rope is driven, and the special (purpose) rubber rope is made of the raw material of following parts by weight, 80 parts of neoprene, butadiene-styrene rubber
50 parts, 5 parts of magnesia, 5 parts of zeolite powder, 10 parts of carbon black, 11 parts of paraffin, 6 parts of stearic acid, 7 parts of nylon fiber, m-xylene diamine 8
Part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610260585.XA CN105910679B (en) | 2016-04-21 | 2016-04-21 | A kind of cable duct of substation water level monitoring alarm system and monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610260585.XA CN105910679B (en) | 2016-04-21 | 2016-04-21 | A kind of cable duct of substation water level monitoring alarm system and monitoring method |
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| Publication Number | Publication Date |
|---|---|
| CN105910679A CN105910679A (en) | 2016-08-31 |
| CN105910679B true CN105910679B (en) | 2019-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610260585.XA Expired - Fee Related CN105910679B (en) | 2016-04-21 | 2016-04-21 | A kind of cable duct of substation water level monitoring alarm system and monitoring method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202757659U (en) * | 2012-07-23 | 2013-02-27 | 禹州市电力工业公司 | Water level alarm and control system of cable trench or seepage well |
| CN203551031U (en) * | 2013-11-25 | 2014-04-16 | 国家电网公司 | Cable trench water level monitoring and alarming system of transformer substation |
| CN203824619U (en) * | 2014-03-13 | 2014-09-10 | 国家电网公司 | Flood marker of cable trench of substation |
| CN205157007U (en) * | 2015-11-25 | 2016-04-13 | 国网河南省电力公司南阳供电公司 | Power station dam ultrasonic water position monitoring wireless voice prompting device |
| CN105737945A (en) * | 2016-03-01 | 2016-07-06 | 国网河南省电力公司南阳供电公司 | Ultrasonic water level monitoring wireless voice prompter for hydropower station barrage and monitoring method |
-
2016
- 2016-04-21 CN CN201610260585.XA patent/CN105910679B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202757659U (en) * | 2012-07-23 | 2013-02-27 | 禹州市电力工业公司 | Water level alarm and control system of cable trench or seepage well |
| CN203551031U (en) * | 2013-11-25 | 2014-04-16 | 国家电网公司 | Cable trench water level monitoring and alarming system of transformer substation |
| CN203824619U (en) * | 2014-03-13 | 2014-09-10 | 国家电网公司 | Flood marker of cable trench of substation |
| CN205157007U (en) * | 2015-11-25 | 2016-04-13 | 国网河南省电力公司南阳供电公司 | Power station dam ultrasonic water position monitoring wireless voice prompting device |
| CN105737945A (en) * | 2016-03-01 | 2016-07-06 | 国网河南省电力公司南阳供电公司 | Ultrasonic water level monitoring wireless voice prompter for hydropower station barrage and monitoring method |
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| Publication number | Publication date |
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| CN105910679A (en) | 2016-08-31 |
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Granted publication date: 20190430 Termination date: 20200421 |