CN207317897U - A kind of open space Weighing type liquid level meter - Google Patents
A kind of open space Weighing type liquid level meter Download PDFInfo
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- CN207317897U CN207317897U CN201721505026.7U CN201721505026U CN207317897U CN 207317897 U CN207317897 U CN 207317897U CN 201721505026 U CN201721505026 U CN 201721505026U CN 207317897 U CN207317897 U CN 207317897U
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Abstract
A kind of open space Weighing type liquid level meter, it is more than solution sealing in area to be measured including density, the measuring stick made by resistant material, the length of the measuring stick and the maximum luffing of area's liquid level to be measured match, the upper end of the measuring stick is fixed on the measurement end of digital weighing sensor, the other end of the digital weighing sensor is fixed on the surface in area to be measured, the data terminal of the digital weighing sensor is connected with weighing displaying controller, the present apparatus is simple in structure, there is no machine driving link, it is applicable in the well of various open spaces, hole, the level gauging in pond, reliability is high, precision is high, particularly water quality inferiority, environment more than debris.
Description
Technical field
It the utility model is related to a kind of open space Weighing type liquid level meter.
Background technology
The method of continuous level gauging substantially has more than 20 to plant at present：Glass tube method, glass plate method, double-colored water level method, manually
Dipping method, air blast, differential pressure method, HTG methods, float method, floating drum method, floating ball method, servo method, heavy cylinder method, capacitance method, electric-resistivity method,
Inductance method, magnetostriction method, supercritical ultrasonics technology, modulation type optical method, microwave method, magnetic turning plate method, vibratory drilling method, nuclear radiation method, optical fiber
Sensor method；And the liquid level for measuring open space mainly has differential pressure method, float method, floating drum method, floating ball method, heavy cylinder method.For water
Position is relatively deep, it is necessary to which the occasion of teletransmission and control is mainly mutation --- the immersion pressure transmitter of differential pressure method, but some are special
Different occasion, such as the trash rack level measuring of generating plant circulation-water pump house, the up to the present good solution of neither one, even if
Be the higher immersion pressure transmitter of cost also because work for a long time in the river containing a large amount of impurity, measuring probe is easy
It is blocked, so that can not correct measurement water level.
Utility model content
The utility model overcomes deficiency existing for above-mentioned technology and a kind of of simple structure and low cost, corrosion-resistant work can
Lean on, a kind of open space Weighing type liquid level meter of high certainty of measurement.
A kind of open space Weighing type liquid level meter, including density be more than area to be measured in solution sealing, by resistant material
The measuring stick of making, the length of the measuring stick and the maximum luffing of area's liquid level to be measured match, and the upper end of the measuring stick is consolidated
The measurement end of digital weighing sensor is scheduled on, the other end of the digital weighing sensor is fixed on the surface in area to be measured, institute
The data terminal for stating digital weighing sensor is connected with weighing displaying controller.Due to using the above structure, digital weighing sensor
The surface in area to be measured is arranged on, the not solution contact in area to be measured during whole measurement, and by corrosion resistant
Measuring stick is contacted with solution, and using Archimedes principle, the change of measuring stick weight is monitored by digital weighing sensor, so that
The height of area's liquid surface lifting to be measured is drawn indirectly, and the present apparatus is simple in structure, does not have machine driving link, is applicable in various open spaces
Well, hole, the level gauging in pond, reliability is high, and precision is high, particularly water quality inferiority, the environment more than debris.
The surrounding of the measuring stick is provided with the fence for preventing that measuring stick from swinging, so that help measuring stick to fix, in order to avoid survey
Length bar is significantly swung in torrent.
The measuring stick is PVC plastic charge bar.
Proportion suitable material is selected as the measuring stick for immersing liquid, it is assumed that the maximum changing amplitude of liquid level is L0, it is close
Spend for ρ0If the length of measuring stick is L, then L0≤L≤1.1L0If the density of measuring stick is ρ, then 1.2 ρ0≤ρ≤2ρ0,
Measuring stick is preferred for corrosion resistant solid bar, so can not only ensure that measuring stick will not fluctuate with the change of liquid level, but also can
To reduce the range of sensor, precision is improved；
If digital weighing sensor range is M (in kilograms), then the diameter phi of measuring stick takes downwards closestSpecification, 25mm≤φ≤100mm under normal circumstances so that range of its weight close to weighing sensor, its
Purpose is also to improve measurement accuracy；
In conclusion the present apparatus is simple in structure, there is no machine driving link, be applicable in the wells of various open spaces, hole, pond
Level gauging, reliability is high, and the environment more than precision height, particularly water quality inferiority, debris, the present apparatus measures under severe water quality
Large-scale SEA LEVEL VARIATION, is also up to 1 ‰ FS without any problem, measurement accuracy.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Embodiment
In conjunction with attached drawing, the technology contents of the utility model are described further.
As shown in Figure 1, a kind of open space Weighing type liquid level meter, including density be more than solution sealing in area to be measured, by
The measuring stick 1 that PVC plastic charge bar makes, the length of the measuring stick 1 and the maximum luffing of area's liquid level to be measured match, the measurement
The upper end of rod 1 is fixed on the measurement end of digital weighing sensor 2, and the other end of the digital weighing sensor 2 is fixed on to be measured
The surface in area, the data terminal of the digital weighing sensor 2 are connected with weighing displaying controller 3, digital weighing sensor 2 with
Monitoring system 4 connects.The surrounding of the measuring stick 1 is provided with the fence for preventing that measuring stick from swinging.Due to using the above structure, counting
Word weighing sensor 2 is arranged on the surface in area to be measured, the not solution contact in area to be measured during whole measurement, and
Contacted by corrosion resistant measuring stick with solution, using Archimedes principle, measuring stick 1 is monitored by digital weighing sensor 2
The change of weight, so as to draw the height of area's liquid surface lifting to be measured indirectly, the present apparatus is simple in structure, does not have machine driving link,
Well, hole, the level gauging in pond of various open spaces are applicable in, reliability is high, the ring more than precision height, particularly water quality inferiority, debris
Border.
Assuming that the maximum changing amplitude of area's liquid level to be measured is L0, density ρ0, length L (L can be selected0≤L≤1.1L0), it is close
Spend ρ (1.2 ρ0≤ρ≤2ρ0), material be usually no more than 100Kg as measuring stick 1, the range of digital weighing sensor 2, it is assumed that
2 range of digital weighing sensor is M (in kilograms), then the diameter phi of measuring stick 1 takes downwards closestRule
Lattice, under normal circumstances 25mm≤φ≤100mm.
In use, measuring stick 1 is freely suspended from the lower section of digital weighing sensor 2, weighing displaying controller 3 is connected
(such as 220 type force value display control instrument), powered on to weighing displaying controller 3 (in the case where having already powered on, can be pressed by clearing
Button), weighing displaying controller 3 will be used as zero point using current weight at this time.
As shown in Figure 1, setting measuring stick 1 immerses length in liquid as H, mass change that weighing displaying controller measures
For MH=ρ0π(φ/2)2H, can obtain H=MH/ρ0π(φ/2)2, show that coefficient can directly display by varying weighing displaying controller
Liquid level H, MHThe weight of measuring stick is measured for weighing displaying controller.
Embodiment：
In this example, if SEA LEVEL VARIATION amplitude peak is 4m, then using φ 35mm, the PVC plastic charge bar (density 1300 of long 4m
㎏/m3), its weight (in kilograms) W0=π × 0.01752× 4 × 1300=5 ㎏, it is H to be such as immersed in the water depth, sensor
Weight (in kilograms) W=W measured0-1000×(π×0.01752× H) then have：H=(5-W) × 1.04 meter, selection amount
The weighing sensor of 5 ㎏ of journey, and 5 ㎏ are demarcated as zero, using tension measurement, then H=W × 1.04 meter, weighing sensor at present
Precision be commonly 0.5 ‰ FS or so, the reachable ± 2.6mm of water level measurement accuracy, within 1 ‰ FS, be equipped with 220 type force value show
Controller can realize 4~20mA teletransmissions and the output of more group relays, realize the remote monitoring of water level.
Claims (4)
- A kind of 1. open space Weighing type liquid level meter, it is characterised in that：Including density be more than area to be measured in solution sealing, by resistance to The measuring stick that corrosion material makes, the length of the measuring stick and the maximum luffing of area's liquid level to be measured match, the measuring stick Upper end be fixed on the measurement end of digital weighing sensor, the other end of the digital weighing sensor is being fixed on area to be measured just Top, the data terminal of the digital weighing sensor are connected with weighing displaying controller.
- 2. open space Weighing type liquid level meter according to claim 1, it is characterised in that：The surrounding installation of the measuring stick There is the fence for preventing that measuring stick from swinging.
- 3. open space Weighing type liquid level meter according to claim 1 or 2, it is characterised in that：If area's liquid level to be measured is most Big amplitude of variation is L0, area's solution density to be measured is ρ0, the length of measuring stick is L, and the density of measuring stick is ρ, then L0≤L≤ 1.1L0And 1.2 ρ0≤ρ≤2ρ0 。
- 4. open space Weighing type liquid level meter according to claim 3, it is characterised in that：The measuring stick is PVC plastic Rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721505026.7U CN207317897U (en) | 2017-11-13 | 2017-11-13 | A kind of open space Weighing type liquid level meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721505026.7U CN207317897U (en) | 2017-11-13 | 2017-11-13 | A kind of open space Weighing type liquid level meter |
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| CN207317897U true CN207317897U (en) | 2018-05-04 |
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| CN201721505026.7U Active CN207317897U (en) | 2017-11-13 | 2017-11-13 | A kind of open space Weighing type liquid level meter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716940A (en) * | 2018-05-23 | 2018-10-30 | 湖南农业大学 | Weir hydraulic parameters measurement method |
| CN111623234A (en) * | 2020-06-10 | 2020-09-04 | 浙江浙能技术研究院有限公司 | Liquid hydrogen tank truck loading and unloading weighing device based on liquid level difference measurement |
| CN116659623A (en) * | 2023-07-28 | 2023-08-29 | 中创领科(西安)智能科技发展有限公司 | Float weighing type liquid level measurer with filtering and impurity removing functions |
-
2017
- 2017-11-13 CN CN201721505026.7U patent/CN207317897U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716940A (en) * | 2018-05-23 | 2018-10-30 | 湖南农业大学 | Weir hydraulic parameters measurement method |
| CN111623234A (en) * | 2020-06-10 | 2020-09-04 | 浙江浙能技术研究院有限公司 | Liquid hydrogen tank truck loading and unloading weighing device based on liquid level difference measurement |
| CN111623234B (en) * | 2020-06-10 | 2024-04-09 | 浙江浙能技术研究院有限公司 | Liquid hydrogen tank truck loading and unloading weighing device based on liquid level difference measurement |
| CN116659623A (en) * | 2023-07-28 | 2023-08-29 | 中创领科(西安)智能科技发展有限公司 | Float weighing type liquid level measurer with filtering and impurity removing functions |
| CN116659623B (en) * | 2023-07-28 | 2024-01-05 | 中创领科(西安)智能科技发展有限公司 | Float weighing type liquid level measurer with filtering and impurity removing functions |
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