CN106644290A - Valve tower water leakage detector based on refraction principle - Google Patents
Valve tower water leakage detector based on refraction principle Download PDFInfo
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- CN106644290A CN106644290A CN201510452476.3A CN201510452476A CN106644290A CN 106644290 A CN106644290 A CN 106644290A CN 201510452476 A CN201510452476 A CN 201510452476A CN 106644290 A CN106644290 A CN 106644290A
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Abstract
The invention relates to a valve tower water leakage detector based on a refraction principle. Optical signal transceiver groups are mounted on the sidewall, and in each optical signal transceiver group, an optical signal transmitter is positioned opposite to an optical signal receiver, and the optical signal transmitter and the optical signal receiver are positioned in different heights in the sidewall; n each optical signal transceiver group, both the optical signal transmitter and the optical signal receiver are mounted on the sidewall in an inclined way, and the inclination angle of the optical signal transmitter corresponds to that of the optical signal receiver, so that the optical signal receiver can only receive optical signals emitted by the optical signal transmitter in the same group; and when leakage water enters a casing, shields the optical receivers in different heights and changes directions of optical signals due to the refraction principle, optical signals cannot be transmitted between the optical signal transmitters and receivers, and an alarm background emits an alarm signal. The detector is simple in structure, reliable, low in cost and convenient to install and maintain, and can detect water leakage conditions of different levels rapidly and emit alarm signals of different levels.
Description
Technical field
The invention belongs to power electronics and power system application, more particularly to a kind of valve based on refraction principle
Tower leakage inspector.
Background technology
High voltage current changer is used to for alternating voltage to be transformed into DC voltage, or by DC voltage inverse transformation from exchange
Voltage.Include substantial amounts of power electronic devices, such as IGCT, IGBT etc. in high voltage current changer.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 the normal operation of high voltage current changer, generally using water cooling system to heating in high voltage current changer
Equipment is cooled down.In high voltage current changer, the water cooling system for directly being 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, heat exchange is carried out by other methods outside transverter, make cooling water temperature
After reduction, then flow back to transverter and carry out next round cooling.Under normal circumstances, the cooling water in interior water cooling system
The water yield typically will not be lossy during circulating cooling.
However, the water cooling system of high voltage current changer generally has the water route of complexity and substantial amounts of water pipe head, deposit
In larger leak risk；With in power system run number of devices it 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 serious harm, it is therefore desirable to arrange 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 is used positioned at high voltage current changer bottom screen
Cover leak catch tray in cover and the leak of transverter is pooled to into the less open-topped leak inspection of diameter
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；Floating block is provided with leak water detdction cylinder, is fixed with the upper surface of floating block along leak water detdction cylinder axial direction side
To the long baffle plate for blocking the optical signal for launching optical cable from light for extending.The upper end of baffle plate offers two
The first elongated hole passed through for the optical signal for supplying two light transmitting optical cables respectively and the second elongated hole.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 and can make after leak floating block and 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 this kind of method
End：Floating block top baffle arrangement is more complicated, and the weight of whole floating block is larger, plus overhead gage can cause floating block weight
Power is uneven to be occurred inclining, and floating block there may be frictional force with detection cylinder inwall, only multiple to overcome by the buoyancy of floating block
The gravity of miscellaneous structure and frictional force are realized floating and have larger risk, can cause when leak occurs in water cooling system
When, water-leakage detecting system possibly cannot delicately make a response.
Being for second the tipping bucket pouring number of times using being filled with water carries out leak water detdction calculating the water yield.I.e. in the shielding of valve bottom
Leakage inspector is set in cover, and device includes tipping bucket, counterweight block, rotary shaft and collimation lens；Work as tipping bucket
When interior water accumulates full, counterweight block can be driven to complete once inside out, the interior water of bucket is poured out, be circulated again, counter
Statistics tipping bucket is it is determined that the upset number of times in the time calculates water leakage to determine the alarm signal grade of transmission.This
The problem of kind of method is：Tipping bucket has in itself certain altitude, in order to the cooling water of seepage is introduced into necessary in tipping bucket
Large-area drainage plate is set above tipping bucket, while must leave enough height in the lower section of tipping bucket to be easy to turn over
Water inside bucket is poured out, and such transverter lower section needs can be very big for the reserved space of water-leakage detecting system；In addition,
Tipping bucket per se with rotating shaft mechanism, after high voltage current changer longtime running, may between the rotating shaft mechanism of tipping bucket
There is adhesion, bucket tipping gear sensitivity decrease itself can be caused, so as to affect the inspection to cooling system water leakage fault
Survey.
The content of the invention
It is an object of the invention to provide a kind of valve tower leakage inspector based on refraction principle.The device installs dimension
Shield is convenient, can accurately detect high voltage current changer water leakage fault.
In order to reach above-mentioned purpose, the solution of the present invention is：Valve tower leak water detdction based on refraction principle is filled
Put, it is characterised in that：Including warning backstage, housing and at least two optical signal transceiver groups；The optical signal
Transceiver group includes an optical signal transmitter and an optical signal receiver；The housing includes top surface, side wall
And bottom surface；The top edge of the side wall is provided with through hole, and the lower limb of side wall is provided with lower through-hole；The optical signal
Transceiver group is arranged on the wall of side, and the optical signal transmitter in described each optical signal transceiver group is located at light
The opposite of signal receiver and optical signal transmitter and optical signal receiver are located at the differing heights of side wall；Each
Optical signal transmitter in optical signal transceiver group is located at the position of side wall differing heights；Each optical signal transceiver
Optical signal receiver in group also is located at the position of side wall differing heights；In described each optical signal transceiver group
Optical signal transmitter is inclined and mounted on the wall of side with optical signal receiver and inclined angle is corresponding, makes light
Signal receiver is only capable of receiving the optical signal that the optical signal transmitter in same group sends；When leak is entered in housing
And leak shelters from the optical receiver of differing heights, and causes optical signal to change direction because of refraction principle, makes light
When optical signal transmission cannot be completed between signal projector and optical signal receiver, warning backstage sends alarm signal
Number.
As further improved technical scheme of the present invention, the housing be cylinder either prism or
Cuboid.
Used as further improved technical scheme of the present invention, the middle part or top of the housing or case top are provided with
Steam vent
Used as further improved technical scheme of the present invention, the upper through hole and lower through-hole are semicircle orifice.
Used as further improved technical scheme of the present invention, the upper through hole position upper half circular hole, lower through-hole is down
Semicircle orifice.
Used as further improved technical scheme of the present invention, the optical signal transceiver group is 3；Optical signal is received
The position for sending out the optical signal transmitter 3 in device group is higher than the position of optical signal receiver 2；When leak cover it is minimum
During the optical signal receiver of position, alarm backstage report leak caution signal；When leak covers the light letter in centre position
During number receiver, serious leak warning is reported on alarm backstage；When leak covers the optical signal receiver of extreme higher position,
Alarm backstage report trip signal.
Used as further improved technical scheme of the present invention, the optical signal in the optical signal transceiver group of bottom is sent out
Emitter height with the optical signal transceiver group in centre position in optical signal receiver be arranged on side wall same height
The position of degree.
This optical signal transmitter and optical signal based on the high voltage current changer leakage inspector of refraction principle is received
Device is installed in housing both sides, and horizontal line slant setting at an angle, when water level is increased beyond and is in housing
When the optical signal transmitter or optical signal receiver of low level, optical signal is caused to change direction, nothing because of refraction principle
Method completes optical signal transmission.Housing side correspondence is placed with multipair laser sending and receiving device as signaling interface, difference
The alarm signal of the correspondence difference order of severity.The present invention is fixed in the water leg of valve tower bottom, and housing side is hung down
Directly in bottom surface.In order to smoothly discharge the gas in housing, the middle part or top of housing side or case top are provided with
Steam vent.In order that water smoothly enters enclosure interior, the bottom top of housing side or bottom are provided with through hole.
The optical signal transmitter and receiver are located on housing towards two contrary sides respectively, one of them
Towards case inside inclined downward, another towards case inside inclined upward, in normal work optical signal transmitter
The signal for being sent can be received by optical signal receiver just.In order to more accurately grasp the water in housing
Position, optical signal transmitter, receiver have multipair, be arranged in differing heights in housing correspond to respectively it is different grades of
Alarm signal.
The invention has the beneficial effects as follows：It is convenient for installation and maintenance, can accurately detect high voltage current changer water leakage situation.
Description of the drawings
Fig. 1 is the main view cross-sectional view of the present invention；
Fig. 2 is the overlooking the structure diagram of the present invention.
Specific embodiment
Below with reference to accompanying drawing, technical scheme and beneficial effect are described in detail.
Embodiment 1
Referring to Fig. 1 and Fig. 2, this valve tower leakage inspector based on refraction principle, including warning backstage, shell
The optical signal transceiver group of body 1 and at least two；The optical signal transceiver group includes an optical signal transmitter 3
With an optical signal receiver 2；The housing 1 includes top surface, side wall and bottom surface；The top edge of the side wall
Through hole 4 is provided with, the lower limb of side wall also is provided with lower through-hole 5；The optical signal transceiver group is arranged on side wall
On, and the optical signal transmitter 3 in described each optical signal transceiver group is located at the right of optical signal receiver 2
Face and optical signal transmitter 3 and optical signal receiver 2 are located at the differing heights of side wall；Each optical signal transceiver
Optical signal transmitter 3 in device group is located at the position of side wall differing heights；Light in each optical signal transceiver group
Signal receiver 2 also is located at the position of side wall differing heights；Optical signal in described each optical signal transceiver group
Transmitter 3 is inclined and mounted on the wall of side with optical signal receiver 2 and inclined angle is corresponding, believes light
Number receiver 2 is only capable of receiving the optical signal that the optical signal transmitter 3 in same group sends；When leak enters housing
Interior and leak shelters from the optical receiver of differing heights, and causes optical signal to change direction because of refraction principle, makes
When optical signal transmission cannot be completed between optical signal transmitter and optical signal receiver, warning backstage sends alarm signal
Number.
Preferably, the housing 1 is cylinder either prism or cuboid, described logical
Hole 4 and lower through-hole 5 are semicircle orifice, and 4 upper half circular holes of the upper through hole, and lower through-hole 5 is lower half
Circular hole.The optical signal transceiver group is 3；The position of the optical signal transmitter 3 in optical signal transceiver group
Higher than the position of optical signal receiver 2；When leak covers the optical signal receiver 2 of extreme lower position, after alarm
Platform report leak caution signal；When leak covers the optical signal receiver 2 in centre position, alarm backstage report is serious
Leak is alerted；When leak covers the optical signal receiver 2 of extreme higher position, alarm backstage report trip signal.Most
In the optical signal transceiver group in optical signal transmitter 3 and centre position in the optical signal transceiver group of lower section
Optical signal receiver 2 is arranged on the position of the sustained height of side wall.When the height of water covers its place height,
The corresponding signal of the first pair of transceiver recovers；And at the same time, the blackout that second pair of transceiver sends can
Increase the reliability of the number of delivering letters on the device.
In the present embodiment 1, in housing side correspondence three pairs of optical signal transmitters 3 of arrangement and optical signal receiver 2,
Each pair optical signal transmitter 3 and optical signal receiver 2 are normally received when there is no water leakage situation all in optical signal
Hair-like state, now can see three normal signals on backstage, and no alarm signal sends；There is leak in transverter
During situation, water enters housing 1 from through hole 5, and with the continuous rising of water level, the water surface shelters from successively different height
The laser pickoff 2 of degree, due to due to refraction effect so that the optical signal that optical signal transmitter 3 sends without
Method is normally received by optical signal receiver 2, and normally closed laser signal disappears, and alarm signal sends.
The alarm mode of the present embodiment is introduced：Three signals simultaneously in the presence of, send on the no alarm signal of backstage；
When first optical signal disappears, leak caution signal is reported；During second blackout, serious leak warning is reported；
When three signals all disappear, trip signal is reported；So that operation maintenance personnel can accurately judge water leakage situation on backstage
The increase situation of seriousness and the water yield is simultaneously processed in time.
Housing can also be cylinder or other shapes.Can also be by a pair of optical signal transceivers of bottom
Receiver of the transmitter height with second pair is arranged on sustained height, when the height of water covers its place height,
The corresponding signal of the first pair of transceiver recovers；And at the same time, the blackout that second pair of transceiver sends can
Increase the reliability of the number of delivering letters on the device.
Above example technological thought 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 fall within this
Within invention protection domain.
Claims (7)
1. a kind of valve tower leakage inspector based on refraction principle, it is characterised in that：Including warning backstage, housing and at least two optical signal transceiver groups；The optical signal transceiver group includes an optical signal transmitter and an optical signal receiver；
The housing includes top surface, side wall and bottom surface；
The top edge of the side wall is provided with through hole, and the lower limb of side wall is provided with lower through-hole；
The optical signal transceiver group is arranged on the wall of side, and the optical signal transmitter in described each optical signal transceiver group is located at the opposite of optical signal receiver and optical signal transmitter and optical signal receiver are located at the differing heights of side wall；
Optical signal transmitter in each optical signal transceiver group is located at the position of side wall differing heights；Optical signal receiver in each optical signal transceiver group also is located at the position of side wall differing heights；
Optical signal transmitter in described each optical signal transceiver group is inclined and mounted on the wall of side with optical signal receiver and inclined angle is corresponding, makes optical signal receiver be only capable of receiving the optical signal that the optical signal transmitter in same group sends；
When leak is in housing and leak shelters from the optical receiver of differing heights, and optical signal is caused to change direction because of refraction principle, when making to be completed between optical signal transmitter and optical signal receiver optical signal transmission, warning backstage sends alarm signal.
2. the valve tower leakage inspector based on refraction principle according to claim 1, it is characterised in that：The housing is cylinder either prism or cuboid.
3. the valve tower leakage inspector based on refraction principle according to claim 1, it is characterised in that：The middle part or top of the housing or case top are provided with steam vent.
4. the valve tower leakage inspector based on refraction principle according to claim 1 or 2 or 3, it is characterised in that：The upper through hole and lower through-hole are semicircle orifice.
5. the valve tower leakage inspector based on refraction principle according to claim 4, it is characterised in that：The upper through hole position upper half circular hole, lower through-hole is lower half circular hole.
6. the valve tower leakage inspector based on refraction principle according to claim 5, it is characterised in that：The optical signal transceiver group is 3；Position of the position of the optical signal transmitter 3 in optical signal transceiver group higher than optical signal receiver 2；When leak covers the optical signal receiver of extreme lower position, alarm backstage report leak caution signal；When leak covers the optical signal receiver in centre position, serious leak warning is reported on alarm backstage；When leak covers the optical signal receiver of extreme higher position, alarm backstage report trip signal.
7. the valve tower leakage inspector based on refraction principle according to claim 6, it is characterised in that：In the optical signal transceiver group of bottom optical signal transmitter height with the optical signal transceiver group in centre position in optical signal receiver be arranged on side wall sustained height position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510452476.3A CN106644290A (en) | 2015-07-28 | 2015-07-28 | Valve tower water leakage detector based on refraction principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510452476.3A CN106644290A (en) | 2015-07-28 | 2015-07-28 | Valve tower water leakage detector based on refraction principle |
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| CN106644290A true CN106644290A (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510452476.3A Pending CN106644290A (en) | 2015-07-28 | 2015-07-28 | Valve tower water leakage detector based on refraction principle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346089A (en) * | 2019-08-07 | 2019-10-18 | 长沙皓欣工业设备有限公司 | A kind of valve leakage detecting device |
| WO2024055364A1 (en) * | 2022-09-14 | 2024-03-21 | 云南电网有限责任公司楚雄供电局 | Sensor for detecting water leakage of converter valve |
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| JPS63281021A (en) * | 1987-05-13 | 1988-11-17 | Japan Organo Co Ltd | Liquid level detector using refraction of light |
| CN2156482Y (en) * | 1992-11-14 | 1994-02-16 | 陈华秋 | All-reflection optical liquid level monitor |
| CN102519689A (en) * | 2011-11-30 | 2012-06-27 | 许继集团有限公司 | Water leakage detection device of valve tower of converter valve |
| CN203657979U (en) * | 2013-12-27 | 2014-06-18 | 国家电网公司 | Direct current converter station converter valve tower water leakage detection device |
| CN104296952A (en) * | 2014-09-28 | 2015-01-21 | 许继电气股份有限公司 | Direct-current transmission converter valve tower and water leakage detection system thereof |
| CN204881995U (en) * | 2015-07-28 | 2015-12-16 | 南京南瑞继保电气有限公司 | Valve tower detection device that leaks based on refraction principle |
-
2015
- 2015-07-28 CN CN201510452476.3A patent/CN106644290A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63281021A (en) * | 1987-05-13 | 1988-11-17 | Japan Organo Co Ltd | Liquid level detector using refraction of light |
| CN2156482Y (en) * | 1992-11-14 | 1994-02-16 | 陈华秋 | All-reflection optical liquid level monitor |
| CN102519689A (en) * | 2011-11-30 | 2012-06-27 | 许继集团有限公司 | Water leakage detection device of valve tower of converter valve |
| CN203657979U (en) * | 2013-12-27 | 2014-06-18 | 国家电网公司 | Direct current converter station converter valve tower water leakage detection device |
| CN104296952A (en) * | 2014-09-28 | 2015-01-21 | 许继电气股份有限公司 | Direct-current transmission converter valve tower and water leakage detection system thereof |
| CN204881995U (en) * | 2015-07-28 | 2015-12-16 | 南京南瑞继保电气有限公司 | Valve tower detection device that leaks based on refraction principle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346089A (en) * | 2019-08-07 | 2019-10-18 | 长沙皓欣工业设备有限公司 | A kind of valve leakage detecting device |
| WO2024055364A1 (en) * | 2022-09-14 | 2024-03-21 | 云南电网有限责任公司楚雄供电局 | Sensor for detecting water leakage of converter valve |
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Application publication date: 20170510 |
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