CN208736524U - A kind of high precision and large measuring range Weighing type float level meter - Google Patents
A kind of high precision and large measuring range Weighing type float level meter Download PDFInfo
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- CN208736524U CN208736524U CN201920318117.2U CN201920318117U CN208736524U CN 208736524 U CN208736524 U CN 208736524U CN 201920318117 U CN201920318117 U CN 201920318117U CN 208736524 U CN208736524 U CN 208736524U
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Abstract
The utility model relates to fluid level measuring device technical fields, specifically, being related to a kind of high precision and large measuring range Weighing type float level meter.Including interior float, table fluid chamber, table body connecting rod and liquid level converter；It is axially provided with bridge arm in the table body connecting rod inner cavity, tension sensor is fixedly connected on the indoor bridge arm of table body cavity, the top of the interior float is connected with chain, and the top of the chain is connected with tension sensor；The liquid level converter is equipped with converter board.The utility model has the advantage that pressure-resistant performance and corrosive nature are good, precision is high, the range ability of measurement greatly promotes, production maintenance is convenient, calibration is convenient, accurate and reliable.
Description
Technical field
The utility model relates to fluid level measuring device technical fields, specifically, being related to a kind of high precision and large measuring range weighing
Formula float level meter.
Background technique
Level gauging is as measurement physical quantity indispensable in industrial production, accuracy, stability and quickly
Response time is related to many aspects such as production safety, trade settlement.Existing liquidometer is broadly divided into live indicator type liquid level
Meter and teletransmission type liquidometer two major classes.
Wherein, live indicator type liquidometer is mostly mechanical structure, passes through law of connected vessels combination magnetic coupling principle, optics
Principle, Archimedes principle carry out live instruction, and representative products include magnetic double level gauge, quartz ampoule liquidometer, glass plate liquid
Position meter and buoy level meter etc..Teletransmission type liquidometer mostly uses magnetic coupling principle, law of buoyancy, magnetostriction principle, capacitor former
Liquid level signal is converted to power delivery signal scene numerical value and shown or outputting standard remote transfer signal by reason, ultrasonic wave principle etc.
Display control is carried out, representative products include float level meter, magnetostriction liquidometer, floating ball lever meter, capacitance liquid level meter, radar
Liquidometer, pressure-type liquidometer etc..
Requirement with country to safety in production is higher and higher, meanwhile, the automated production of enterprise requires also more and more general
And the defect that live indicator type liquidometer can not achieve signal teletransmission is increasingly apparent, however, to realize the automatic of measure field
Alarm and control, then require liquidometer that must export remote transfer signal.
Currently, domestic teletransmission type liquidometer is many kinds of, but restricted, is brought to level gauging many by measuring principle
Problem, such as: 1, floating ball lever meter, price is low, but due to the restriction of measuring principle, and Measurement Resolution is mostly 1 centimeter, relatively
Error is very big, is only used for some pairs of measurement accuracy measurement environment of less demanding, meanwhile, also non-refractory and high pressure；2, magnetic
Flexible liquidometer is caused to measure using magnetostriction principle, measurement accuracy is high, but price is relatively too high, simultaneously as it is adopted
With inner hole floating buoyancy principle, so determining that the viscosity of its pressure-resistant performance and measuring medium cannot be too high；3, supersonic liquid level
Meter and radar level gauge belong to non-contact measurement, too high to the installation environment requirement of measure field, meanwhile, the work of measuring medium
Structural acessory in skill stability, the volatility of medium and measuring medium storage tank can all seriously affect the reliability of such product；
4, capacitance level gauge uses capacitance principle, and measurement does not use floating ball, but it is to the material of storage tank and the conductance of measuring medium
Rate has very high requirement；5, float level meter carries out level gauging using the principle that interior floating drum becomes buoyancy, according to measuring principle point
For spring and torsion tubular type, pressure-resistant performance, measurement continuity and unfailing performance are good, and still, spring is by elastic member
The influence of part, torsion tubular type are influenced by torsional moment, and the measuring range of the two is no more than 3 meters, meanwhile, such product
Price is generally higher.
Summary of the invention
The purpose of this utility model is to provide a kind of high precision and large measuring range Weighing type float level meter, above-mentioned to solve
Technical problem.
To solve the above problems, the technical scheme adopted by the utility model is
A kind of high precision and large measuring range Weighing type float level meter, it is characterised in that: including interior float, table fluid chamber, table body
Connecting rod and liquid level converter；The upper/lower terminal of the table fluid chamber is fixed with connecting flange and lower connecting flange respectively,
Installation blind plate is fixedly connected at the top of the upper connecting flange；The table body connecting rod inner hollow, one end are vertically solid
Surely it is connected on the side wall of table fluid chamber, end flanges is fixed on the other end, the end flanges are fixedly connected with radiator fin device；
It is axially provided with bridge arm in the table body connecting rod inner cavity, one end of the bridge arm is fixed in end flanges, and the other end runs through table
The side wall of fluid chamber is extend into table fluid chamber；Tension sensor is fixedly connected on the indoor bridge arm of table body cavity；It is described
The top of interior float is connected with chain, and the top of the chain is connected with tension sensor；The bottom of the liquid level converter
Equipped with wiring chamber, the wiring chamber is equipped with electric interfaces；The liquid level converter is equipped with converter board, and the liquid level turns
The shell inner end of parallel operation and the outer end of radiator fin device are fixedly connected.
Preferred: the top of the chain is connected by universal loose joint with tension sensor.
Preferred: the center of the upper installation blind plate is equipped with VENT PLUG or emptying valve.
It is preferred: the interior float be cylindrical, massive structure or heavy wall cylindrical empty core structure, length and measurement
The range ability of medium is corresponding.
The utility model has the advantages that compared with prior art, the utility model has the advantage that
1, the optional 1kg of the range minimum of tension sensor, the optional 20-50kg of maximum, and traditional float level meter
Interior floating drum because torque arm and spring principle limitation, can only accomplish within 3kg, the increase of interior floating drum quality can be effective
Promote the pressure-resistant performance and corrosive nature of liquidometer described in the utility model；
2, precision is high, and traditional float level meter is to drive magnet steel transformation by the angle change of torque tube, so as to cause magnetic
Field variation, and then measured by the angular transducer of hall principle, usually only 0-3 ° of windup-degree, so it is measured
Precision is typically up to 0.5 grade, and the utility model using high-precision tension sensor due to directly being measured, reliable
Property and stability will be far superior to the former, meanwhile, the precision of tension sensor can generally reach 2/1000ths, reasonable selected amount
Journey can greatly improve the measurement accuracy of liquidometer described in the utility model；
3, the range ability measured greatly promotes, and conventional pontoon liquidometer maximum can only measure 2.5 meters of measurement range,
And measuring range can be extended to 10 meters or more by the utility model；
4, interior float can effectively prevent liquid level wave with tension sensor in such a way that chain and universal loose joint are connect
Interior float caused by dynamic, which acutely shakes, is rebuffed and causes the fluctuation of measurement indicating value or unstable situation；
5, production maintenance is convenient, when measuring cell is damaged, can easily measuring probe be replaced or be safeguarded；
6, calibration is convenient, accurately and reliably, solves traditional torque tube or spring float level meter because measuring medium is close
Degree measures the problem of inaccuracy caused by changing, the utility model only needs to input correlation density in liquid level converter, no
Need real liquid calibration that can achieve the purpose that accurate calibration.
Detailed description of the invention
Fig. 1 is a kind of schematic perspective view of embodiment of the utility model；
Fig. 2 is a kind of side structure schematic view of embodiment of the utility model；
Fig. 3 is the A-A view of Fig. 2；
Fig. 4 is the assembling schematic diagram of tension sensor described in the utility model.
In figure: float in 1-；2- chain；Connecting flange under 3-；4- table fluid chamber；The upper connecting flange of 5-；It is installed on 6- blind
Plate；7- fastening bolt；8- VENT PLUG；9- table body connecting rod；10- bridge arm；The universal loose joint of 11-；12- tension sensor；13- is tight
Gu screw；14- end flanges；15- radiator fin device；16- electric interfaces；17- wiring chamber；18- liquid level converter；19- conversion
Device board.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description
Embodiment:
- Fig. 3 referring to Fig.1, high precision and large measuring range Weighing type float level meter described in the present embodiment, including interior float 1, table
Fluid chamber 4, table body connecting rod 9 and liquid level converter 18.The interior float 1 is that (or heavy wall is cylindrical for cylindrical, massive structure
Hollow structure), length is corresponding with the range ability of measuring medium.Shadow of traditional float level meter by floating drum length in it
It rings, quality can be dramatically increased with the increase of length, but since the force request of torque tube or elastic element limits, big
When range, the wall thickness of interior floating drum is relatively thin, and pressure-resistant performance and corrosion resistance can be all severely impacted, and this implementation
In example, the quality and wall thickness of internal float 1 are not particularly limited, so, the resistance to of liquidometer can be improved by increasing wall thickness mode
Press performance and corrosion resistance.
The upper/lower terminal of the table fluid chamber 4 is fixed with connecting flange 5 and lower connecting flange 3, the upper company respectively
The top of acting flange 5 is fixedly connected with installation blind plate 6, for convenience upper emptying, the upper peace by several fastening bolts 7
The center of dress blind plate 6 is equipped with VENT PLUG 8(if it is necessary, can set VENT PLUG 8 on emptying valve).The table body connects
9 inner hollow of extension bar, one end are vertically fixedly connected on the side wall of table fluid chamber 4, and end flanges 14 are fixed on the other end,
The end flanges 14 are fixedly connected with radiator fin device 15 by 4 bolts.Due to technological reason, measuring medium is likely to be high temperature
Measuring medium, the high temperature of its own can affect to liquid level converter 18, both influence the service life of equipment, also could
It generates certain temperature drift and influences measurement accuracy, radiator fin device 15 can effectively carry out the high temperature heat of measuring medium itself
Heat dissipation isolation, so that the heatproof section of measurement is effectively promoted, the service life and measurement accuracy of lifting means.
It is axially provided with bridge arm 10 in 9 inner cavity of table body connecting rod, one end of the bridge arm 10 is fixed on end flanges 14
On, the other end runs through the side wall of table fluid chamber 4, extend into table fluid chamber 4.As shown in Figure 3-4, in table fluid chamber 4
Tension sensor 12 is fixedly connected with by fastening screw 13 on bridge arm 10, moreover, being located at 10 end of bridge arm in table fluid chamber 4
Equipped with rectangular positioning inserted block, which is plugged on 4 inner wall of table fluid chamber in corresponding positioning groove, to prevent bridge arm 10
It rotates, and then the position of tension sensor 12 is avoided to change and influence measurement result.The top of the interior float 1 connects
It is connected to chain 2, the top of the chain 2 is connected by universal loose joint 11 with tension sensor 12, and the connection type is in not shadow
In the case where ringing precision, the fluctuation or unstable because of measurement result indicating value caused by level fluctuation can be more effectively prevented.
The bottom of the liquid level converter 18 is equipped with wiring chamber 17, and the wiring chamber 17 sets that there are two for wiring
In electric interfaces 16(the present embodiment, electric interfaces 16 are using locking gland head).In the shell of the liquid level converter 18
End is fixedly connected by the outer end of bolt and radiator fin device 15.The liquid level converter 18 is equipped with converter board 19, works as survey
When the liquid level of amount changes, the buoyancy that will cause interior float 1 changes, and then influences the defeated of tension sensor 12
Signal changes out, the input signal that the converter board 19 of liquid level converter 18 receives also corresponding change, and aobvious at it
Show and show digital liquid level signal designation on interface, including the parameters such as measuring medium density, liquid level percentage, output electric current number are (such as
It is necessary to can realize the function of display medium working temperature simultaneously with external thermal resistance).
The liquid level converter 18 is using commercially available common apparatus, the 4-20mAm mould of 12 outputting standard of tension sensor
Intend current signal (4-20mA analog current size and liquid level numerical value are in a linear relationship) to the converter inside liquid level converter 18
The 4-20mAm analog current signal received is carried out analog-to-digital conversion by board 19, converter board 19, and shows that digital liquid level is believed
Number.The converter board 19 is one by analog-signal transitions using analog-to-digital conversion and A/D converter (abbreviation ADC)
For the electronic component of digital signal.Common analog-digital converter is that input voltage (electric current) signal is converted to an output
Digital signal.Since digital signal itself does not have practical significance, it is merely representative of a relative size, so, any one
Analog-digital converter requires a standard with reference to analog quantity as conversion, and relatively common reference standard is maximum convertible
Signal magnitude, and the digital quantity exported then indicates size of the input signal relative to reference signal.
The working principle of high precision and large measuring range Weighing type float level meter described in the utility model is summarized as follows:
Interior float 1 is connect by the universal loose joint 11 at 2 top of chain with tension sensor 12, the liquid level in measurement storage tank
When changing, the height for the interior float 1 being immersed in measuring medium changes.At this point, interior float 1 by downward gravity and
Upward buoyancy.Interior float 1 is designed as the cylindric of a rule, and the volume immersed in liquid is expressed as V, liquid level
For h, the outer diameter radius of interior float 1 is r, and acceleration of gravity g, the quality of interior float 1 is m, and the gravity of float is G, and measurement is situated between
The density of matter is ρ, and the pulling force that tension sensor 12 is subject to is FIt draws, the buoyancy that interior float 1 is subject to is FIt is floating, then have:
FIt draws = G − FIt is floating
Wherein: G=mg
FIt is floating= ρg V
V=πr2h
To sum up: FIt draws= mg −ρgπr2h
In above formula, the radius r of the quality m fixed constant of interior float 1, outer diameter is fixed constant, and gravity acceleration g is solid
Permanent number, the density p of measuring medium are also fixed constant, FIt drawsIt is corresponding linear relationship with liquid level h, measures FIt draws, just
Liquid level h can be calculated automatically, therefore, liquid level h can be accurately measured using high-precision tension sensor 12.
The characteristics of high precision and large measuring range Weighing type float level meter described in the utility model, is as follows:
1, the optional 1kg of the range minimum of tension sensor, the optional 20-50kg of maximum, and traditional float level meter
Interior floating drum because torque arm and spring principle limitation, can only accomplish within 3kg, the increase of interior floating drum quality can be effective
Promote the pressure-resistant performance and corrosive nature of liquidometer described in the utility model；
2, precision is high, and traditional float level meter is to drive magnet steel transformation by the angle change of torque tube, so as to cause magnetic
Field variation, and then measured by the angular transducer of hall principle, usually only 0-3 ° of windup-degree, so it is measured
Precision is typically up to 0.5 grade, and the utility model using high-precision tension sensor due to directly being measured, reliable
Property and stability will be far superior to the former, meanwhile, the precision of tension sensor can generally reach 2/1000ths, reasonable selected amount
Journey can greatly improve the measurement accuracy of liquidometer described in the utility model；
3, the range ability measured greatly promotes, and conventional pontoon liquidometer maximum can only measure 2.5 meters of measurement range,
And measuring range can be extended to 10 meters or more by the utility model；
4, interior float can effectively prevent liquid level wave with tension sensor in such a way that chain and universal loose joint are connect
Interior float caused by dynamic, which acutely shakes, is rebuffed and causes the fluctuation of measurement indicating value or unstable situation；
5, production maintenance is convenient, when measuring cell is damaged, can easily measuring probe be replaced or be safeguarded；
6, calibration is convenient, accurately and reliably, solves traditional torque tube or spring float level meter because measuring medium is close
Degree measures the problem of inaccuracy caused by changing, the utility model only needs to input correlation density in liquid level converter, no
Need real liquid calibration that can achieve the purpose that accurate calibration.
The above is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all benefits
The equivalent structure made by the utility model specification and accompanying drawing content is directly or indirectly used in other relevant technology necks
Domain, similarly within the scope of patent protection of the utility model.
Claims (4)
1. a kind of high precision and large measuring range Weighing type float level meter, it is characterised in that: including interior float (1), table fluid chamber (4),
Table body connecting rod (9) and liquid level converter (18)；The upper/lower terminal of the table fluid chamber (4) is fixed with connection method respectively
Blue (5) and lower connecting flange (3) are fixedly connected at the top of the upper connecting flange (5) and install blind plate (6)；The table body
Connecting rod (9) inner hollow, one end are vertically fixedly connected on the side wall of table fluid chamber (4), and end is fixed on the other end
Flange (14), the end flanges (14) are fixedly connected with radiator fin device (15)；Axially it is arranged in table body connecting rod (9) inner cavity
Having bridge arm (10), one end of the bridge arm (10) is fixed on end flanges (14), and the other end runs through the side wall of table fluid chamber (4),
It extend into table fluid chamber (4)；Tension sensor (12) are fixedly connected on the bridge arm (10) in table fluid chamber (4)；Institute
The top for stating interior float (1) is connected with chain (2), and the top of the chain (2) is connected with tension sensor (12)；The liquid
The bottom of bit pad (18) is equipped with wiring chamber (17), and the wiring chamber (17) is equipped with electric interfaces (16)；The liquid level
Converter (18) is equipped with converter board (19), the shell inner end of the liquid level converter (18) and radiator fin device (15) it is outer
End is fixedly connected.
2. high precision and large measuring range Weighing type float level meter according to claim 1, it is characterised in that: the chain (2)
Top be connected by universal loose joint (11) with tension sensor (12).
3. high precision and large measuring range Weighing type float level meter according to claim 1, it is characterised in that: the upper installation is blind
The center of plate (6) is equipped with VENT PLUG (8) or emptying valve.
4. high precision and large measuring range Weighing type float level meter according to claim 1, it is characterised in that: the interior float
(1) corresponding with the range ability of measuring medium for cylindrical, massive structure or heavy wall cylindrical empty core structure, length.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920318117.2U CN208736524U (en) | 2019-03-14 | 2019-03-14 | A kind of high precision and large measuring range Weighing type float level meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920318117.2U CN208736524U (en) | 2019-03-14 | 2019-03-14 | A kind of high precision and large measuring range Weighing type float level meter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607125A (en) * | 2021-08-04 | 2021-11-05 | 中国电建集团昆明勘测设计研究院有限公司 | Monitoring system for monitoring tension of inverted plumb measuring line and using method |
| 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 |
-
2019
- 2019-03-14 CN CN201920318117.2U patent/CN208736524U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607125A (en) * | 2021-08-04 | 2021-11-05 | 中国电建集团昆明勘测设计研究院有限公司 | Monitoring system for monitoring tension of inverted plumb measuring line and using method |
| CN113607125B (en) * | 2021-08-04 | 2023-06-09 | 中国电建集团昆明勘测设计研究院有限公司 | Monitoring system for monitoring tension of inverted vertical line and using method |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A high precision large range weighing float level gauge Effective date of registration: 20220615 Granted publication date: 20190412 Pledgee: Weifang Rural Commercial Bank Co.,Ltd. Weicheng sub branch Pledgor: WEIFANG YAFENG CHEMICAL INSTRUMENT Co.,Ltd. Registration number: Y2022980007842 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230523 Granted publication date: 20190412 Pledgee: Weifang Rural Commercial Bank Co.,Ltd. Weicheng sub branch Pledgor: WEIFANG YAFENG CHEMICAL INSTRUMENT Co.,Ltd. Registration number: Y2022980007842 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A high-precision large range weighing float level gauge Effective date of registration: 20230526 Granted publication date: 20190412 Pledgee: Weifang Rural Commercial Bank Co.,Ltd. Weicheng sub branch Pledgor: WEIFANG YAFENG CHEMICAL INSTRUMENT Co.,Ltd. Registration number: Y2023980041782 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |