CN203858014U - Fluctuation-preventive stabilizing device for oil-level indicator of oil basin of energy-storage unit - Google Patents
Fluctuation-preventive stabilizing device for oil-level indicator of oil basin of energy-storage unit Download PDFInfo
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- CN203858014U CN203858014U CN201420266362.0U CN201420266362U CN203858014U CN 203858014 U CN203858014 U CN 203858014U CN 201420266362 U CN201420266362 U CN 201420266362U CN 203858014 U CN203858014 U CN 203858014U
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- oil
- measuring cylinder
- fluctuation
- basin
- level indicator
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- 238000004146 energy storage Methods 0.000 title abstract 3
- 230000000087 stabilizing effect Effects 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 230000003019 stabilising effect Effects 0.000 claims description 7
- 238000009825 accumulation Methods 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000007667 floating Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 230000009466 transformation Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 235000015927 pasta Nutrition 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Level Indicators Using A Float (AREA)
Abstract
The utility model discloses a fluctuation-preventive stabilizing device for an oil-level indicator of an oil basin of an energy-storage unit. The fluctuation-preventive stabilizing device comprises a measuring barrel connected with a water-guide bearing oil basin. A magnetic floater is arranged in the measuring barrel, a monitor is arranged outside the measuring barrel, and a throttling plate is arranged at an oil inlet in the bottom of the measuring barrel and provided with throttling holes. Meanwhile, a limit pipe is fixed on the inner wall of the upper end cap of the measuring barrel. Operation performance of the modified oil-level indicator is remarkably improved, the problems of shutting startup or alarm due to the fact that oil level is too low or too high suddenly when the energy-storage unit starts up or working conditions are switched are avoided, serious affection on oil-level signals from oil flow states of the oil basin is thoroughly eliminated, stability of the oil-level signals and safety running of the power grid are guaranteed, and operating effectiveness of the entire Baoquan power station is improved; via testing, signals of the oil-level indictor of a water-guide bearing are stably output under various working conditions of the unit, and shaking is avoided.
Description
Technical field
The utility model relates to the aid field of hydroenergy storage station, is specifically related to the anti-fluctuation stabilising arrangement of a kind of accumulation of energy unit oil basin oil-level meter.
Background technology
The pump turbine rated head in power station can reach hundreds of rice, and rated speed is higher, and runner top is provided with water pilot bearing, adopts oil pump external circulation cooling system, for guaranteeing unit safety, reliability service.Water pilot bearing is provided with oil basin oil-level meter, for monitoring bearing oil level information, but in actual set operational process, the fluctuation of water guide oil basin oil level indicator display is larger, very unstable, repeatedly causes oil level signal fault, machine or warning are opened in locking, have a strong impact on the operation stability of unit.
The oil stream fluidised form of water pilot bearing oil tray inside and the principle of work of sensor are analyzed, found that the oil stream fluid stable of water pilot bearing oil tray inside is very large on oil level signal impact.Because water is led the signal fluctuation of oil level indicator, the oil stream fluidised form of water pilot bearing oil tray inside and the principle of work of sensor are studied, find that the oil stream fluid stable of water pilot bearing oil tray inside is very large on oil level signal impact.
1) water pilot bearing oil tray normally to inject oil level be that 80-90mm(measures oil level place specially), unit is when starting, the oil pumping of water pilot bearing outer circulation pump starts moment, the oil level of water guide oil basin is reduced to suddenly 60 mm, proximity sensing value 45mm, and then slowly recover.
2) unit is at run duration, and the signal of oil level indicator remains on grey invisible mode, cannot recover upstate all the time, until shut down.
3) water pilot bearing oil level reaches between operation steady state period at unit starting to unit, and oil level signal presents obvious rule, is " U " type curve.
By the principle analysis to the operation conditions of water pilot bearing oil tray and sensor, the signal intensity of oil level indicator is summed up:
1) the water pilot bearing oil tray circulation system is oil pump outer circulation structure, by ebullator, the deep fat in oil tray is extracted out from oil tray bottom, after external cooler is cooling, is again recycled into oil tray inside.Unit opens after machine order sending, and water is led outer circulation pump start, and moment extracts oil level out a part and enters pipeline, cause oil level moment reduction, ball float in the measuring cylinder of oil level indicator also sharply declines thereupon thereupon, and reducing suddenly appears in oil level signal, approaches or cause warning.
2), hydraulic turbine macro-axis is in rotation, boosting velocity procedure, the rotation of macro-axis drives oil stream around to rotate together, effect due to macro-axis centrifugal force, the pasta of oil tray inside is occurred along with the rising of the rotating speed pasta of " funnel is U-shaped ", middle low, phenomenon that circumference is high, thus make to be arranged on the outer peripheral oil level indicator of water guide oil basin when unit operation all the time in high bit.
Water is led to oil level indicator and split out, test at scene: sensor is connected to 24VDC temporary source, by the ball float of moved by hand oil level indicator measuring cylinder inside, simulate the variation of oil level.The change procedure of the 4-20mA signal of insqtrumentation monitoring oil level indicator sensor.
In process of the test, find that oil level indicator float, dropping to measuring cylinder during the end, shows 4.2mA, but while moving to measuring cylinder top end cap, cannot measure analog signals, this position exceeds the measurement range of analog sensor.So the 4-20 mA output signal by monitor analogue quantity sensor is determined the upper and lower domain of walker of magnetic ball float.
Utility model content
The utility model is in conjunction with the feature of water pilot bearing oil system outer circulation, oil level indicator measurement function to water pilot bearing oil tray redesigns and transforms, increased the function modifications that prevents oil level fluctuation, thereby reduce the impact of water pilot bearing oil stream fluidised form, finally reach the effect that reduces oil level signal fault.
For achieving the above object, adopt following technical scheme: the anti-fluctuation stabilising arrangement of a kind of accumulation of energy unit oil basin oil-level meter, comprise the measuring cylinder being connected with water pilot bearing oil tray, in measuring cylinder, be provided with magnetic ball float, and be outside equipped with monitoring device in measuring cylinder, in oil-in position, measuring cylinder bottom, be provided with choke block, on choke block, be provided with throttle orifice.Meanwhile, at measuring cylinder upper end cover inwall, be fixed with position-limiting tube, position-limiting tube diameter is less than magnetic floating ball diameter, and the exhaust or the spill port that on measuring cylinder upper end cover, arrange are positioned at position-limiting tube.Described monitoring device is the analog sensor that is fixed on measuring cylinder outside and can monitors the induced signal of magnetic ball float motion formation, and this analog sensor is connected with monitoring system.
Process is to the measure of system and transformation, and the serviceability of water pilot bearing oil level indicator is obviously promoted:
1, avoid when unit starting or change working the too low or no to scale of oil level sudden change to cause locking to open machine or warning phenomenon, also thoroughly eliminated the impact that oil level signal is seriously subject to oil tray oil stream fluidised form, ensured the stability of oil level signal.
2, after the transformation of water guide oil basin oil level indicator, in conjunction with Automation Elements such as oil temperature transmitter, sensing water content mixed in oil transmitter, oily flowmeters, guarantee the safety in operation of oil tray, and make the power station unit can be with adjusting with opening, guarantee the safe operation of electrical network, improved the effectiveness of operation in whole Bao Quan power station.
3,, after transformation, through test, when the various operating mode operation of unit, the equal stable output of water pilot bearing oil level indicator signal, does not have jitter phenomenon.
Accompanying drawing explanation
Fig. 1 is the anti-fluctuation stabilising arrangement of the utility model oil level indicator schematic diagram;
Fig. 2 is analog sensor schematic diagram in Fig. 1;
Fig. 3 is mimic channel connection layout in Fig. 2.
In figure, label 1 is measuring cylinder, and 2 is magnetic ball float, and 3 is analog sensor, and 4 is supervisory system, and 5 is choke block, and 6 is position-limiting tube, and 7 is upper end cover, and 8 is exhaust or spill port.
embodiment
Referring to Fig. 1-Fig. 3, oil level indicator is comprised of three parts, comprises measuring cylinder 1(diameter of phi 50mm), magnetic ball float 2(Φ 40mm), the long 200mm of analog sensor 3(), magnetic ball float 2 fluctuates in measuring cylinder, and analog sensor 3 is close to measuring cylinder 1 outside.Oil level indicator is positioned at water wheel chamber, is vertically arranged on water pilot bearing oil tray upper cover plate outer edge.Rely on the upper and lower unsteady drive oil level indicator measuring cylinder internal magnetization ball float 2 of the inner oil level of oil tray, magnetic ball float 2 moves up and down outside sensor is formed to magnetic induction, thereby makes sensor output 4-20mA analog signals to supervisory system.
Oily stream mode analysis, oil level indicator principle of work and site test for water pilot bearing oil tray, drawn conclusion to the fluctuation situation of water pilot bearing oil level indicator, carried out transformation targetedly:
1) end cap at the magnetic ball float 2 measuring cylinder tops of oil level indicator is transformed.By test, when moving to sensor demonstration 20mA, magnetic ball float 2 carries out mark, and this mark is measured, registered to end cap 7 places at measuring cylinder 1 top, and the cylindrical pipe of processing DN20mm according to this length is as position-limiting tube 6, be welded on the inside of measuring cylinder end cap 7, avoid magnetic ball float 2 to rise and too much exceed transducer range, cannot show normal oil level, avoid oil basin oil-level arbitrarily fluctuation between grey and normal display state.Can also increase scheme as a supplement, the exhaust or the spill port 8 that on measuring cylinder 1 upper end cover, arrange are positioned at position-limiting tube, if vent port can arrange dustproof construction.Because fixing position-limiting tube 6 diameters of measuring cylinder upper end cover inwall are less than the diameter of magnetic ball float 2, can oppress in position-limiting tube move on to range on magnetic ball float 2 after, can seal exhaust or spill port 8.
2) oil level indicator measuring cylinder bottommost is transformed.Oil level indicator measuring cylinder diameter of phi 50mm, seems bigger than normal when measuring oil level, thereby the oil level that makes measuring cylinder 1 inside is along with ebullator startup and rising rate of rolational speed of generating set and violent upper and lower fluctuation.For fear of this phenomenon, at 1 choke block 5 of measuring cylinder bottommost welding, stainless steel, 4 hole * Φ 8mm.By 4 less choke blocks, can limit equably the oily Flow Velocity that enters or flow out oil level instrumentation graduated cylinder 1, thoroughly eliminate the inner oil level of oil level indicator measuring cylinder 1 along with the startup of ebullator or rise of rotational speed and the oil level rapid fluctuation phenomenon occurring.
Claims (3)
1. the anti-fluctuation stabilising arrangement of accumulation of energy unit oil basin oil-level meter, comprise the measuring cylinder being connected with water pilot bearing oil tray, in measuring cylinder, be provided with magnetic ball float, and be outside equipped with monitoring device in measuring cylinder, it is characterized in that: in oil-in position, measuring cylinder bottom, be provided with choke block, on choke block, be provided with throttle orifice.
2. the anti-fluctuation stabilising arrangement of accumulation of energy unit oil basin oil-level meter according to claim 1, it is characterized in that: at measuring cylinder upper end cover inwall, be fixed with position-limiting tube, position-limiting tube diameter is less than magnetic floating ball diameter, and the exhaust or the spill port that on measuring cylinder upper end cover, arrange are positioned at position-limiting tube.
3. the anti-fluctuation stabilising arrangement of accumulation of energy unit oil basin oil-level meter according to claim 1, it is characterized in that: described monitoring device is the analog sensor that is fixed on measuring cylinder outside and can monitors the induced signal of magnetic ball float motion formation, and this analog sensor is connected with monitoring system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420266362.0U CN203858014U (en) | 2014-05-23 | 2014-05-23 | Fluctuation-preventive stabilizing device for oil-level indicator of oil basin of energy-storage unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420266362.0U CN203858014U (en) | 2014-05-23 | 2014-05-23 | Fluctuation-preventive stabilizing device for oil-level indicator of oil basin of energy-storage unit |
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| Publication Number | Publication Date |
|---|---|
| CN203858014U true CN203858014U (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420266362.0U Expired - Lifetime CN203858014U (en) | 2014-05-23 | 2014-05-23 | Fluctuation-preventive stabilizing device for oil-level indicator of oil basin of energy-storage unit |
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| CN (1) | CN203858014U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120491A (en) * | 2016-11-29 | 2018-06-05 | 中冶天工集团天津有限公司 | A kind of magnetic-float type level gauge and detection method |
| CN110873599A (en) * | 2018-08-29 | 2020-03-10 | 北京洪泰同创信息技术有限公司 | Electric connection device and control system |
-
2014
- 2014-05-23 CN CN201420266362.0U patent/CN203858014U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120491A (en) * | 2016-11-29 | 2018-06-05 | 中冶天工集团天津有限公司 | A kind of magnetic-float type level gauge and detection method |
| CN110873599A (en) * | 2018-08-29 | 2020-03-10 | 北京洪泰同创信息技术有限公司 | Electric connection device and control system |
| CN110873599B (en) * | 2018-08-29 | 2021-04-09 | 北京洪泰同创信息技术有限公司 | Electric connection device and control system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141001 |