CN2335133Y - Precision bubble type water level meter - Google Patents
Precision bubble type water level meter Download PDFInfo
- Publication number
- CN2335133Y CN2335133Y CN 98207618 CN98207618U CN2335133Y CN 2335133 Y CN2335133 Y CN 2335133Y CN 98207618 CN98207618 CN 98207618 CN 98207618 U CN98207618 U CN 98207618U CN 2335133 Y CN2335133 Y CN 2335133Y
- Authority
- CN
- China
- Prior art keywords
- water level
- level meter
- bubble type
- type water
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model provides a precision bubble type water level meter belonging to the technical field of measurement for a water level. The utility model solves the problem existing in the existing measuring technique for a water level and a tide level that measurement precision is not high. The precision bubble type water level meter is additionally provided with a filter 9 which has a mechanical damper function and a digital crystal pressure transducer 12 with high sensitivity on the basis of a general bubble type water level meter. The filter 9 can obviously reduce or eliminate the interference noise caused by the waves on a water surface for measuring signals. The water level meter can be positioned at a place which is 50m away from a water surface to measure a water level or a tide level for a river, a lake and a sea. The measurement data is stable, and the measurement precision can reach 1 mm.
Description
The air bubble type water level meter of the precision that the utility model application proposes belongs to the level measuring technical field.
Since the further opening in coastland, river basin and river plain, the construction of hydraulic engineering, and, make that continuously, accurately, stably monitoring water level becomes very necessary because the greenhouse effect temperature of the earth warms and causes the rising on sea level.But still not really ripe so far in this field, particularly measuring accuracy reaches the level measuring problem of 1mm, does not also solve well.
The ultrasound wave of having used at present or the level measurement device of sonar principle not only need a vertical shaft, and the equipment complexity, the price height, maintenance cost is big, also can be subjected to the influence of water and air circle matter and disturbs the measurement result of water level or tidal level, is difficult to the precision that reaches higher.The long-term float type level meter that extensively adopts also needs to be provided with a vertical shaft, and the measuring method that adopts do not have filter action to the wave interference noise of different frequency, can influence the accuracy and reliability of its measurement.
Conventional air bubble type water level meter is that a kind of equipment is simple, the measurement mechanism of the comparatively ideal water level of measuring method and tidal level.Yet, the influence that this conventional air bubble type water level meter can not avoid that water surface wave causes to the interference noise of measuring-signal, therefore, the measuring accuracy and the stability of this class air bubble type water level meter wait further to improve.
The purpose of this utility model is in order to overcome the deficiency of the prior art that above-mentioned water level or tidal level are measured, and proposes a kind ofly can significantly reduce and eliminate the water surface wave interference noise, thereby improves measurement accuracy and stable accurate air bubble type water level meter.
The purpose of this utility model is so finished, a kind of air bubble type water level meter of precision is promptly proposed, this accurate air bubble type water level meter comprises: gas cylinder 1, reduction valve 2, gas admittance valve 3, gas filter 4, pressure limiting valve 5, gas meter 6, air outlet valve 10, data recording and transmission instrument 13, it is characterized in that, also comprise a wave filter with mechanical damping effect 9, an inversion measuring cup 11 and a highly sensitive digital crystal pressure transducer 12 as measuring tube.
The above-mentioned wave filter with mechanical damping effect 9 is that internal diameter is that 0.5～1mm and length are the plastic tube of 10000-40000mm or metal tube, this plastic tube or metal tube are one both can make spiral fashion, also can make the long tube to other obviously little shape of air resistance.
The effect of bypass valve 7 is when measuring tranquil rivers or lake, do not need to eliminate noise, at this moment, open bypass valve 7 with wave filter 9, make the gaseous tension that reaches balance directly lead to high-sensitivity digital formula crystal pressure transducer 12, sense data.
Accurate air bubble type water level meter of the present invention can adopt cheap inert gas nitrogen as measurement gas, also can adopt inert gas argon or helium as measurement gas.
The air bubble type water level meter of the precision that the utility model proposes owing to adopted the wave filter 9 with mechanical damping effect in gas circuit, has for example adopted the spiral fashion wave filter of being made by plastic tube, can reduce or eliminate dried that water surface wave causes effectively
Pressure limiting valve 5 can limit the nitrogen pressure that feeds whole air-channel system and avoid hypertonia, thereby plays the accuracy that guarantees gaseous tension and flow and protect high-sensitivity digital formula crystal pressure transducer 12 to be unlikely because of air pressure is too high and damage.
Adjustments of gas flowmeter 6 makes the nitrogen flow that flows into inversion measuring cup 11 remain the 5ml/ branch, at this moment nitrogen equates substantially at the pressure of the pressure of being inverted 11-1 place, measuring cup aperture with outside this depth of water, nitrogen is overflowed incessantly slowly with the form of minute bubbles, whole air-channel system forms a kind of mobile equilibrium, and at this moment the numerical value and the depth of water measured of high-sensitivity digital formula crystal pressure transducer 12 is proportional.
When wave appears in the water surface, nitrogen pressure in the water level gauge air-channel system also can correspondingly fluctuate, but plant fluctuation of pressure when the wave filter 9 that constitutes by the spiral fashion elongated tubular, because the mechanical damping effect of wave filter 9, can reduce significantly and eliminate because the formed interference noise of wave of the water surface, through behind the wave filter 9, the air pressure that has reduced and eliminated interference noise feeds digital highly sensitive crystal pressure transducer 12, measure data and deliver to data recording after treatment and transmit instrument 13, be sent to control center at a distance when needing.Measuring accuracy is 1mm.
The effect of bypass valve 7 is when measuring the water level of tranquil rivers or lake water, does not need to eliminate interference with wave filter 9, at this moment, opens bypass valve 7, makes the gaseous tension that reaches mobile equilibrium directly lead to high-sensitivity digital formula crystal pressure transducer 12.Sense data.
The water depth value H of measuring point should meet following formula:
H=C·P/γ
Wherein, the nitrogen pressure value measured of P-datalogger 13;
The proportion of the water at γ-measurement water level place;
The C-correction factor, relevant with the temperature of measuring water level place water, freezing degree, flow, the animals and plants situation that contains in quantity of sand and mud, wind-force and the water, this coefficient is determined by test and by means of experience.
Should illustrate, that the air bubble type water level meter of the application's precision is reduced or what eliminate only is the influence of " wave interference ", here " the wave interference " of indication is the wave of cycle of fluctuation within 10 seconds, and the interference noise of this wave can reduce to original per mille.And the cycle is that " big surge " can be measured exactly more than 5 minutes, and its measuring accuracy is 1mm.
Therefore, the air bubble type water level meter of this precision can be flooded and the measuring accuracy and the stability of tidal level significantly, and energy consumption is very little, can monitor for a long time continuously, safeguards that the simple operation expense is low, only needs change one time every half a year gas cylinder.
Claims (6)
1, a kind of air bubble type water level meter of precision, comprise nitrogen cylinder 1, reduction valve 2, gas admittance valve 3, gas filter 4, pressure limiting valve 5, gas meter 6, air outlet valve 10 and data recording and transmission instrument 13, it is characterized in that, also comprise a wave filter with mechanical damping effect 9, an inversion measuring cup 11 and a highly sensitive digital crystal pressure transducer 12 as measuring tube.
2, the air bubble type water level meter of precision according to claim 1, it is characterized in that, wave filter 9 with mechanical damping effect is that internal diameter is plastic tube or the metal tube of 0.5～1mm and long 10000mm-40000mm, this plastic tube or metal tube be one and both can be made into spiral fashion, also can make the obvious long tube of other little shape of air resistance.
3, according to the air bubble type water level meter of claim 1 and 2 described precisions, it is characterized in that, can adopt to touch to replace highly sensitive digital transistor pressure transducer 12 like sensor.
4, according to the air bubble type water level meter of claim 1,2 and 3 described precisions, it is characterized in that, when measure that the tranquil water surface do not have that wave causes to the water level of the interference noise of signal the time, bypass valve in the gas circuit 7 can be opened, slightly wave filter 9 and directly measure air pressure in the gas circuit.
5, according to the air bubble type water level meter of claim 1,2 and 3 described precisions, it is characterized in that, can adopt inert nitrogen gas or argon gas or helium as measurement gas.
6, the air bubble type water level meter of precision according to claim 4 is characterized in that, can adopt inert nitrogen gas or argon gas or helium as measurement gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98207618 CN2335133Y (en) | 1998-07-24 | 1998-07-24 | Precision bubble type water level meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98207618 CN2335133Y (en) | 1998-07-24 | 1998-07-24 | Precision bubble type water level meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2335133Y true CN2335133Y (en) | 1999-08-25 |
Family
ID=33963507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98207618 Expired - Lifetime CN2335133Y (en) | 1998-07-24 | 1998-07-24 | Precision bubble type water level meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2335133Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422506A (en) * | 2012-05-24 | 2013-12-04 | Naruems株式会 | Method for reducing underwater noise by underwater sound damper |
| CN104913828A (en) * | 2015-06-24 | 2015-09-16 | 重庆多邦科技发展有限公司 | Energy-saving method of bubble type fluviograph, bubble type fluviograph and water level monitoring system |
| CN117889933A (en) * | 2024-03-15 | 2024-04-16 | 河南豫科先进技术研究有限公司 | Natural river channel water level monitoring device |
-
1998
- 1998-07-24 CN CN 98207618 patent/CN2335133Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422506A (en) * | 2012-05-24 | 2013-12-04 | Naruems株式会 | Method for reducing underwater noise by underwater sound damper |
| CN103422506B (en) * | 2012-05-24 | 2016-09-21 | Naruems株式会 | A kind of method utilizing acoustic damper in water to reduce water-borne noise |
| CN104913828A (en) * | 2015-06-24 | 2015-09-16 | 重庆多邦科技发展有限公司 | Energy-saving method of bubble type fluviograph, bubble type fluviograph and water level monitoring system |
| CN117889933A (en) * | 2024-03-15 | 2024-04-16 | 河南豫科先进技术研究有限公司 | Natural river channel water level monitoring device |
| CN117889933B (en) * | 2024-03-15 | 2024-05-31 | 河南豫科先进技术研究有限公司 | Natural river channel water level monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |