CN110470360A - A kind of observation of liquid level, monitoring, alarming are in the liquid level emasuring device and its application method of one - Google Patents
A kind of observation of liquid level, monitoring, alarming are in the liquid level emasuring device and its application method of one Download PDFInfo
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- CN110470360A CN110470360A CN201910876010.4A CN201910876010A CN110470360A CN 110470360 A CN110470360 A CN 110470360A CN 201910876010 A CN201910876010 A CN 201910876010A CN 110470360 A CN110470360 A CN 110470360A
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- 239000007788 liquid Substances 0.000 title claims abstract description 246
- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims description 15
- 238000005303 weighing Methods 0.000 claims abstract description 46
- 230000005611 electricity Effects 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- 230000006698 induction Effects 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims description 8
- 238000012806 monitoring device Methods 0.000 claims description 7
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- 238000004364 calculation method Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000007689 inspection Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 238000011900 installation process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000026683 transduction Effects 0.000 description 2
- 238000010361 transduction Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
- G01F23/18—Indicating, recording or alarm devices actuated electrically
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Abstract
The invention discloses a kind of observation of liquid level, monitoring, alarmings to be internally provided with weighing unit, mounting bracket circuit control panel in the liquid level emasuring device of one, including master control box, master control box；Hydraulic pressure unit is provided with below master control box, bearing bar and the fixed bracket of master control box are connected between master control box and hydraulic pressure unit, hydraulic pressure unit includes support frame, liquid level tube and alarm lamp band are respectively arranged on support frame, liquid level tube is located at immediately ahead of alarm lamp band, liquid level tube bottom end is disposed with the fixed bracket of bellows, inlet and liquid inlet joint, liquid level tube top are socketed with liquid level tube load-bearing connector, alarm lamp band and master control box Electricity Federation.Fluid temperature is able to solve in the liquid level emasuring device of one it is an advantage of the invention that it provides a kind of observation of liquid level, monitoring, alarming and changes influence inspection numerical value, while current precision improves, and accuracy is high, with strong applicability in terms of installation maintenance.
Description
Technical field
The present invention relates to field of measuring technique, specially a kind of liquid level observation, monitoring, alarming are filled in the level gauging of one
It sets and its application method.
Background technique
The measurement on the spot of the water level of rivers, lake and underground water etc., water level prediction and human society life and the relations of production
Closely, planning, design, construction and the management of hydraulic engineering need water level prediction, and the engineerings such as bridge, harbour, navigation channel, plumbing are built
If also needing water level prediction, in flood-control and drought relief, water level prediction is even more important, it is the foundation of hydrologic forecast and hydrographic message, water level
Data is all important basic document in the research of stage discharge relation and in the analysis of river load, ice condition etc..
In daily life or production process, the machine with liquid, which also may require that, carries out level monitoring device in real time
The residual state of inside liquid level is observed, this has just needed level monitoring device.
However, level monitoring device mainly has several forms of ultrasonic wave, capacitor, electrode on the market at present.The above form tool
There is following defect: 1, ultrasonic liquid level sensor, there is the field of water mist, the medium for being also easy to produce a large amount of spumescences, effumability medium
Ultrasonic level gage cannot be used by closing, and be easy to absorb sound wave or interference sound wave transmitting, and make dropout, accuracy decline.2, electric
Appearance formula liquid level sensor, output nonlinear parasitic capacitance, the sensitivity of distribution capacity, measuring accuracy susceptible.3, electrode
Formula has several electrodes to be only able to display several water level values.In use, error is larger, should not be widely used to promote.While ultrasonic wave,
Capacitor holds since the reason of mounting means can only be installed at the top of liquid container so falling into liquid when with the presence of maintenance or replacement
The risk of device.
Summary of the invention
The purpose of the present invention is to provide a kind of observation of liquid level, monitoring, alarmings in the liquid level emasuring device of one, to solve
The problems mentioned above in the background art.
To achieve the above object, the invention provides the following technical scheme:
A kind of observation of liquid level, monitoring, alarming are set in the liquid level emasuring device of one, including master control box, master control cassette interior
It is equipped with weighing unit, mounting bracket circuit control panel；Hydraulic pressure unit, master control box and hydraulic pressure unit are provided with below master control box
Between be connected with the fixed bracket of bearing bar and master control box, hydraulic pressure unit includes support frame, is respectively arranged with liquid on support frame
Position pipe and alarm lamp band, liquid level tube are located at immediately ahead of alarm lamp band, and liquid level tube bottom end is disposed with bellows, inlet is fixed
Bracket and liquid inlet joint, liquid level tube top are socketed with liquid level tube load-bearing connector, alarm lamp band and master control box Electricity Federation.
Preferably, the liquid inlet joint is installed on inlet bracket, and inlet bracket is fixedly sheathed on bellows, institute
It states and is provided with scale on liquid level tube, scale show value is percentage, and liquid level tube outer rim is socketed with protecting tube.
Preferably, it is connected with outer tooth locking screw pipe between the master control box and the fixed bracket of master control box, it is described to hold
It is connected below weight bar with load-bearing connector, is contacted above bearing bar with weighing sensor fixation.
Preferably, support frame as described above includes L-type and I type structure.
Preferably, support frame as described above is I type, and support frame includes that the fixed bracket of master control box and bottom plate, bottom plate are set to
Support frame bottom and longitudinally perpendicular with support frame axis, is provided with liquid level tube fixing clasp, ripple between bellows and liquid level tube
Pipe is coaxially disposed with liquid level tube, and liquid level tube is vertical with master control box to be connect；It is fixedly connected above bearing bar with weighing sensor, liquid
Position pipe outer rim is socketed with protective sleeve.
Preferably, support frame as described above is L-type, and support frame includes that the fixed bracket of master control box and inlet fix bracket,
The fixed bracket of inlet and support frame axis are laterally vertical, are provided with bellows, bellows and liquid above the fixed bracket of inlet
It is provided with the fixed elbow of liquid level between the pipe of position, is fixedly connected above bearing bar with weighing sensor, liquid level tube outer rim is socketed with anti-
Pretective sleeve pipe.
A kind of observation of liquid level, monitoring, alarming are in the liquid level emasuring device application method of one, comprising the following steps:
7), level monitoring device is fixed on liquid container, opens up through-hole in liquid container, with hose by liquid container
Through-hole is connected to liquid inlet joint；
8) water of fixed volume V, is poured into liquid container, its water level is made just to cover the wave below liquid level tube
Line pipe, weighing sensor is changed the electric signal exported by power to Weighing module at this time, presses calibration zero liquid level button, weighing
This signal is converted to digital signal and is stored in single-chip microcontroller ROM (power down preservation) memory block by module, records the weight m of zero liquid level value
Zero；
9), complete 2) step and then it is secondary filled the water, when water level reaches liquid level tube highest point, weighing and sensing at this time
Device is changed the electric signal exported by power to Weighing module, presses the full liquid level button of calibration, Weighing module converts this signal
It is stored in single-chip microcontroller ROM (power down preservation) memory block for digital signal, the weight m for recording full level value is full；
10) after, single-chip microcontroller has recorded zero liquid level value m zero and full level value m completely, begin to use the present apparatus, at this time practical liquid
The weight m of place value is real；It should be noted that m actually gradual change value；It is obtained by calculation L=m reality/(full-m zero of m) * %
Liquid level accounting L；
11) after, completing above-mentioned steps, it is 0~30% that low-water alarm value, which is arranged, by setting button, and high water level is arranged
Alarming value is 70~100%；
12), the above numerical value, single-chip microcontroller export liquid level signal by DAC digital-to-analogue conversion, and are shown in above display screen.
Preferably, alarm mode is arranged by circuit control panel, obtains liquid level accounting L < setting low liquid level warning value, that
Alarm lamp band is always on, and liquid level accounting L > setting high liquid level warning value is obtained, then alarm lamp band is glittering.
Preferably, the master control cassette interior is additionally provided with human body induction module, and human body induction module is by the telecommunications of output
Number send single-chip microcontroller to, this signal is exported and is always on to alarm lamp band by alarm lamp by single-chip microcontroller, high to see liquid level tube actual bit
Degree.
It should be noted that present apparatus alarm lamp band is using LED light strip, opposite is not that can only use
LED light strip.
Here, it should be noted that with the high ratio of internal diameter liquid level tube highest liquid level and actual liquid level and highest point weight and
The ratio of actual liquid level point weight is equal, passes through formula: m=ρ * v=ρ * s*h, and wherein ρ is fluid density, and s is liquid level tube bottom surface
Product, h are liquid level tube height.So m reality=ρ * v reality=ρ * s*h is real, and m is full=ρ * v is full=and ρ * s*h is full, do not change in fluid density
And under the premise of liquid level tube floor space is immovable, m is real: and m is full=and h is real: and h is full.
Beneficial effect
The present apparatus is since using weighing measurement test mode, fluid temperature, which changes, to check that numerical value is made to this patent
At influence, therefore the not fastidious site environment of this patent；Output current precision improves compared with the existing technology, and accuracy is high；Pacifying
During dress, it is only necessary to device is installed on liquid container, it is easy for installation without hanging on device at the top of liquid container, together
When fall into the risk of liquid container when being also not in the presence of maintenance or replacement, therefore, in conclusion the present apparatus is relative to existing
Have that using face is wider, maintenance replacement is more convenient, is worth with promoting.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is master control box-shaped structure schematic diagram of the present invention；
Fig. 3 is master control box perspective view of the present invention；
Fig. 4 is liquid level tube of the present invention and bellows connection relationship diagram；
Fig. 5 is L-type structure schematic diagram of the present invention；
Fig. 6 is alarm lamp band positional diagram of the present invention；
Fig. 7 is installation relation schematic diagram of the present invention；
Fig. 8 is L-type installation relation schematic diagram of the present invention；
Fig. 9 is circuit board working principle diagram of the present invention.
In figure: 1- master control box, 2- weighing sensor, 3- mounting frame for sensor, 4- bearing bar, 5- circuit board, outside 6-
Tooth locking screw pipe, the fixed bracket of 7- master control box, 8- support frame, the fixed bracket of 9- inlet, 10- liquid level tube load-bearing connector,
11- liquid level tube, 12- bellows, 13- liquid inlet joint, 14- alarm lamp band, 15- display screen, 16- human body induction module；
1a-, calibration zero liquid level button, 1b- demarcate full liquid level button, 8a- bottom plate, 12a- liquid level tube fixing clasp, 12b-
Liquid level fixes elbow.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
It please refers to shown in Fig. 1~7 and 9, a kind of observation of liquid level, monitoring, alarming are in the liquid level emasuring device of one, including master
Box 1 is controlled, master control box 1 is internally provided with weighing unit, 3 circuit control panel 5 of mounting bracket；It is provided with below master control box 1
Hydraulic pressure unit is connected with bearing bar 4 and the fixed bracket 7 of master control box, hydraulic pressure unit packet between master control box 1 and hydraulic pressure unit
Support frame 8 is included, liquid level tube 11 and alarm lamp band 14 are respectively arranged on support frame 8, before liquid level tube 11 is located at alarm lamp band 14 just
Side, 11 bottom end of liquid level tube are disposed with the fixed bracket 9 of bellows 12, inlet and liquid inlet joint 13,11 top of liquid level tube
It is socketed with liquid level tube load-bearing connector 10, alarm lamp band 14 and 1 Electricity Federation of master control box.
The liquid inlet joint 13 is installed on inlet bracket 9, and inlet bracket 9 is fixedly sheathed on bellows 12, institute
It states and is provided with scale on liquid level tube 11, scale show value is percentage, and 11 outer rim of liquid level tube is socketed with protecting tube.
Outer tooth locking screw pipe 6, the bearing bar 4 are connected between the master control box 1 and the fixed bracket 7 of master control box
Lower section is connected with load-bearing connector 10, and 4 top of bearing bar is contacted with the fixation of weighing sensor 2.
Support frame as described above 8 includes L-type and I type structure.
Support frame as described above 8 is I type, and support frame 8 includes that the fixed bracket 7 of master control box and bottom plate 8a, bottom plate 8a are set to
8 bottom of support frame and longitudinally perpendicular with 8 axis of support frame, is provided with liquid level tube fixing clasp between bellows 12 and liquid level tube 11
12a, bellows 12 and liquid level tube 11 are coaxially disposed, and liquid level tube 11 is vertical with master control box 1 to be connect；4 top of bearing bar and weighing
Sensor 2 is fixedly connected, and 11 outer rim of liquid level tube is socketed with protective sleeve.
A kind of observation of liquid level, monitoring, alarming are in the liquid level emasuring device application method of one, comprising the following steps:
1), level monitoring device is fixed on liquid container, opens up through-hole in liquid container, with hose by liquid container
Through-hole is connected to liquid inlet joint 13；
2) water of fixed volume V, is poured into liquid container, covers its water level just positioned at 11 lower section of liquid level tube
Bellows 12, weighing sensor is changed the electric signal exported by power to Weighing module at this time, presses calibration zero liquid level button
This signal is converted to digital signal and is stored in single-chip microcontroller ROM (power down preservation) memory block by 1a, Weighing module, records zero liquid level value
Weight m zero；
3), complete 2) step and then it is secondary filled the water, when water level reach 11 highest point of liquid level tube when, at this time weighing pass
Sensor is changed the electric signal exported by power to Weighing module, presses the full liquid level button 1b of calibration, Weighing module is this signal
It is converted to digital signal and is stored in single-chip microcontroller ROM (power down preservation) memory block, the weight m for recording full level value is full；
4) after, single-chip microcontroller has recorded zero liquid level value m zero and full level value m completely, begin to use the present apparatus, at this time actual liquid level
The weight m of value is real；It should be noted that m actually gradual change value；Liquid is obtained by calculation L=m reality/(full-m zero of m) * %
Position accounting L；
5) after, completing above-mentioned steps, it is 30% that low-water alarm value, which is arranged, by setting button, and high water-level alarm is arranged
Value is 70%；
6), the above numerical value, single-chip microcontroller export liquid level signal by DAC digital-to-analogue conversion, and are shown in above display screen.
Preferably, alarm mode is arranged by circuit control panel 5, obtains liquid level accounting L < setting low liquid level warning value,
So alarm lamp band is always on, and liquid level accounting L > setting high liquid level warning value is obtained, then alarm lamp band is glittering.
Human body induction module 16 is additionally provided with inside the master control box 1, human body induction module 16 gives this singal transduction
To single-chip microcontroller, single-chip microcontroller controls alarm lamp band 14, is always on it, when human body leaves, restores state.
In installation process, it is installed on fluid box side and is opening up through-hole in bottom of liquid container, held liquid with hose
Device through-hole is connected to liquid inlet joint 13, since liquidometer when liquid level is lower than bellows upper port will be inaccurate when installation, no
Bottom of liquid container can be higher than, therefore, 12 upper port of bellows must be parallel with bottom of liquid container, water level to 12 upper end of bellows
Start to carry out scale liquid position at mouthful.
Embodiment 2
Please refer to shown in Fig. 1~6 and 8~9, a kind of observation of liquid level, monitoring, alarming in the liquid level emasuring device of one, including
Master control box 1, master control box 1 are internally provided with weighing unit, 3 circuit control panel 5 of mounting bracket；It is arranged below master control box 1
There is hydraulic pressure unit, bearing bar 4 and the fixed bracket 7 of master control box, hydraulic pressure unit are connected between master control box 1 and hydraulic pressure unit
Including support frame 8, liquid level tube 11 and alarm lamp band 14 are respectively arranged on support frame 8, liquid level tube 11 is being located at alarm lamp band 14 just
Front, 11 bottom end of liquid level tube is disposed with the fixed bracket 9 of bellows 12, inlet and liquid inlet joint 13, liquid level tube 11 push up
End cap is connected to liquid level tube load-bearing connector 10, alarm lamp band 14 and 1 Electricity Federation of master control box.
Preferably, the liquid inlet joint 13 is installed on inlet bracket 9, and inlet bracket 9 is fixedly sheathed in bellows
On 12, scale is provided on the liquid level tube 11, scale show value is percentage, and 11 outer rim of liquid level tube is socketed with protecting tube.
Outer tooth locking screw pipe 6, the bearing bar 4 are connected between the master control box 1 and the fixed bracket 7 of master control box
Lower section is connected with load-bearing connector 10, and 4 top of bearing bar is contacted with the fixation of weighing sensor 2.
Support frame as described above 8 includes L-type and I type structure.
Support frame as described above 8 is I type, and support frame 8 includes that the fixed bracket 7 of master control box and bottom plate 8a, bottom plate 8a are set to
8 bottom of support frame and longitudinally perpendicular with 8 axis of support frame, is provided with liquid level tube fixing clasp between bellows 12 and liquid level tube 11
12a, bellows 12 and liquid level tube 11 are coaxially disposed, and liquid level tube 11 is vertical with master control box 1 to be connect；4 top of bearing bar and weighing
Sensor 2 is fixedly connected, and 11 outer rim of liquid level tube is socketed with protective sleeve.
Support frame as described above 8 is L-type, and support frame 8 includes the fixed bracket 7 of master control box and the fixed bracket 9 of inlet, feed liquor
Mouthful fixed bracket 9 is laterally vertical with 8 axis of support frame, is provided with bellows 12 above the fixed bracket 9 of inlet, bellows 12 with
The fixed elbow 12b of liquid level is provided between liquid level tube 11,4 top of bearing bar is fixedly connected with weighing sensor 2, outside liquid level tube 11
Edge is socketed with protective sleeve.
A kind of observation of liquid level, monitoring, alarming are in the liquid level emasuring device application method of one, comprising the following steps:
1), level monitoring device is fixed on liquid container, opens up through-hole in liquid container, with hose by liquid container
Through-hole is connected to liquid inlet joint 13；
2) water of fixed volume V, is poured into liquid container, covers its water level just positioned at 11 lower section of liquid level tube
Bellows 12, weighing sensor is changed the electric signal exported by power to Weighing module at this time, presses calibration zero liquid level button
1a, this signal is converted to digital signal and is stored in single-chip microcontroller ROM (power down preservation) memory block by Weighing module, while recording zero liquid
The weight m zero of place value；
3), complete 2) step and then it is secondary filled the water, when water level reach 11 highest point of liquid level tube when, at this time weighing pass
Sensor is changed the electric signal exported by power to Weighing module, presses the full liquid level button 1b of calibration, Weighing module is this signal
It is converted to digital signal and is stored in single-chip microcontroller ROM (power down preservation) memory block, while the weight m for recording full level value is full；
4) after, single-chip microcontroller has recorded zero liquid level value m zero and full level value m completely, begin to use the present apparatus, at this time actual liquid level
The weight m of value is real；It should be noted that m actually gradual change value；Liquid is obtained by calculation L=m reality/(full-m zero of m) * %
Position accounting L；
5) after, completing above-mentioned steps, it is 30% that low-water alarm value, which is arranged, by setting button, and high water-level alarm is arranged
Value is 70%；
6), the above numerical value, single-chip microcontroller export liquid level signal by DAC digital-to-analogue conversion, and are shown in above display screen.
Alarm mode is set by circuit control panel 5, liquid level accounting L < setting low liquid level warning value is obtained, then alarming
Light bar is always on, and liquid level accounting L > setting high liquid level warning value is obtained, then alarm lamp band is glittering.
Human body induction module 16 is additionally provided with inside the master control box 1, human body induction module 16 gives this singal transduction
To single-chip microcontroller, single-chip microcontroller controls alarm lamp band 14, is always on it, when human body leaves, restores state.
It in installation process, is installed on fluid box side and is opening up through-hole in liquid container downside, with hose by liquid
Container through-hole is connected to liquid inlet joint 13, and when installation need to guarantee that the fixed place elbow 12a of liquid level is lower than bottom of liquid container, so
When can guarantee low liquid level weight change and liquid level linearly, if liquidometer will be inaccurate when being higher than bottom of liquid container,
Start to carry out scale liquid position at the fixed elbow 12a upper port of water flooding liquid level.
In test process, water level test in kind: end interface is that zero level demarcates end interface on bellows on calibration bellows
Rise at 1000 millimeters as full liquid level, low liquid level warning value is set as 15%, high liquid level warning value be set as 95% (carried out under room temperature,
Liquid level bore 25MM matches 5KG weighing sensor)
Since air flowing and water wave fluctuation are affected but influence lower, numeral method precision is not enough to liquid level tube 11
Capture, output accuracy slightly fluctuate a part for induction water wave fluctuation and air flowing, a part due to energization operational amplifier circuit by
Temperature drift influences, and keeps stable state to export electric current raising 0.09MA at this time after powering on 300 seconds and is converted into height of water level about 5MM
(0.5%), this problem is not sufficient to influence present apparatus precision, and present apparatus precision has substantially increased level sensing precision.This
Device technique parameter:
Input voltage: DC 24V
Anti-reverse protection.
Short-circuit protection.
0mA current signal out when single-chip microcontroller failure is defeated
It exports 4~20mA of electric current (output+24V voltage when unloaded)
Export current precision: 0.01953125MA (0.12%)
Calculating liquid level is converted to 4~20MA current signal with the digital-to-analogue chip that a precision is 1/1024 and sets for other
Standby to use, can stablize output when in order to guarantee that fault predictive occurs in equipment is 0MA, and the present apparatus loses 204.8/1024=20%
Precision exports a 4MA electric signal, and therefore, the current signal precision of output is 16/ (1024*80%)=0.01953125MA
(0.12%), relative to capacitive precision 0.2% and ultrasonic wave 1%, precision is more accurate.
Present apparatus display screen 15 is a 4 Digital sum pipes, and function is the numerical value for showing setup parameter, shows inside single-chip microcontroller
The liquid level duty ratio calculated, ratio (be accurate to 0.1%, power on just show), by observe numeral method ratio and
Actual liquid level pipe liquid duty ratio can check whether sensor has exception, if compared with the level value of display walks difference with actual liquid level
Big then re-calibration is once.
It should be noted that " L " type is using measurement in " I " type of the invention and " L " type detection process
The weight of liquid level tube 11 and liquid, " I " type, which enters bellows production using liquid, allows bellows 12 to generate one straight up
Deformation power allow liquid level tube 11 to lighten, Weighing module incudes the variation of this power, therefore, during the installation process, " L " type bearing bar 4
Top is contacted with 2 front fixation of weighing sensor, and 4 top of " I " type bearing bar is contacted with the fixation of 2 back side of weighing sensor.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of liquid level observation, monitoring, alarming are in the liquid level emasuring device of one, it is characterised in that: main including master control box (1)
Control box (1) is internally provided with weighing unit, mounting bracket (3) circuit control panel (5)；Liquid is provided with below master control box (1)
Unit is pressed, bearing bar (4) is connected between master control box (1) and hydraulic pressure unit and master control box is fixed bracket (7), hydraulic list
Member includes support frame (8), is respectively arranged with liquid level tube (11) and alarm lamp band (14) on support frame (8), liquid level tube (11) is located at
Immediately ahead of alarm lamp band (14), liquid level tube (11) bottom end be disposed with bellows (12), inlet fixed bracket (9) and into
Liquid connector (13), liquid level tube (11) top are socketed with liquid level tube load-bearing connector (10), alarm lamp band (14) and master control box (1) electricity
Connection.
2. a kind of liquid level observation according to claim 1, monitoring, alarming are in the liquid level emasuring device of one, feature exists
In: the liquid inlet joint (13) is installed on inlet bracket (9), and inlet bracket (9) is fixedly sheathed on bellows (12),
Scale is provided on the liquid level tube (11), liquid level tube (11) outer rim is socketed with protecting tube.
3. a kind of liquid level observation according to claim 1, monitoring, alarming are in the liquid level emasuring device of one, feature exists
In: outer tooth locking screw pipe (6), the bearing bar are connected between the master control box (1) and master control box fixed bracket (7)
(4) lower section is connected with load-bearing connector (10), contacts above bearing bar (4) with weighing sensor (2) fixation.
4. a kind of liquid level observation according to claim 1, monitoring, alarming are in the liquid level emasuring device of one, feature exists
In: support frame as described above (8) includes L-type and I type structure.
5. a kind of liquid level observation according to claim 1, monitoring, alarming are in the liquid level emasuring device of one, feature exists
In: support frame as described above (8) is I type, and support frame (8) includes that master control box fixed bracket (7) and bottom plate (8a), bottom plate (8a) are set
It is placed in support frame (8) bottom and longitudinally perpendicular with support frame (8) axis, is provided with liquid between bellows (12) and liquid level tube (11)
Position pipe fixing clasp (12a), bellows (12) and liquid level tube (11) are coaxially disposed, and liquid level tube (11) is vertical with master control box (1)
Connection；It is fixedly connected above bearing bar (4) with weighing sensor (2), liquid level tube (11) outer rim is socketed with protective sleeve.
6. a kind of liquid level observation according to claim 1, monitoring, alarming are in the liquid level emasuring device of one, feature exists
In: support frame as described above (8) is L-type, and support frame (8) includes that master control box fixed bracket (7) and inlet are fixed bracket (9),
Inlet fixed bracket (9) and support frame (8) axis are laterally vertical, and inlet is provided with bellows above fixed bracket (9)
(12), it is fixed elbow (12b) that it is provided with liquid level between bellows (12) and liquid level tube (11), is passed above bearing bar (4) with weighing
Sensor (2) is fixedly connected, and liquid level tube (11) outer rim is socketed with protective sleeve.
7. a kind of liquid level observation according to claim 1, monitoring, alarming are in the liquid level emasuring device of one, feature exists
In: it is additionally provided with human body induction module (16) inside the master control box (1), human body induction module (16) will be imparted to monolithic
This signal is exported and gives alarm lamp band (14) by machine, single-chip microcontroller, and alarm lamp is allowed to be always on, to see liquid level tube actual bit height.
8. a kind of liquid level observation according to claim 1, monitoring, alarming are in the liquid level emasuring device of one, feature exists
In: it is additionally provided with display screen (15), calibration zero liquid level button (1a) inside the master control box (1) and demarcates full liquid level button
(1b), display screen are a 4 Digital sum pipes.
9. the application method of a kind of liquid level observation, liquid level emasuring device of the monitoring, alarming in one, comprising the following steps:
1), level monitoring device is fixed on liquid container, through-hole is opened up below liquid container, with hose by liquid container through-hole with
Liquid inlet joint (13) connection；
2), the water of fixed volume V is poured into inside liquid container, its water level is made just to cover the ripple below liquid level tube (11)
It manages (12), weighing sensor is changed the electric signal exported by power to Weighing module at this time, presses calibration zero liquid level button
This signal is converted to digital signal and is stored in single-chip microcontroller ROM (power down preservation) memory block by (1a), Weighing module, records zero liquid level
The weight m zero of value；
3), complete 2) step and then it is secondary filled the water, when water level reaches liquid level tube (11) highest point, weighing and sensing at this time
Device is changed the electric signal exported by power to Weighing module, presses calibration completely liquid level button (1b), Weighing module is this signal
It is converted to digital signal and is stored in single-chip microcontroller ROM (power down preservation) memory block, the weight m for recording full level value is full；
4), single-chip microcontroller recorded zero liquid level value m zero and full level value m it is full after, begin to use the present apparatus, at this time actual liquid level value
Weight m is real；It should be noted that m actually gradual change value；Show that liquid level accounts for by calculation L=m reality/(full-m zero of m) * %
Compare L；
5) after, completing above-mentioned steps, it is 0~30% that low-water alarm value, which is arranged, by setting button, and high water-level alarm is arranged
Value is 70~100%；
6), the above numerical value, single-chip microcontroller export liquid level signal by DAC digital-to-analogue conversion, and are shown in above display screen (15).
10. a kind of liquid level observation according to claim 1 or claim 7, the use of liquid level emasuring device of the monitoring, alarming in one
Method, it is characterised in that: alarm mode, liquid level accounting L < setting low liquid level warning are set by circuit control panel (5)
Value, then LED light strip is always on, liquid level accounting L > setting high liquid level warning value, then LED light strip is glittering.
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| CN111928919A (en) * | 2020-08-13 | 2020-11-13 | 天津大学 | Ice storage amount monitoring and protecting device for ice storage equipment |
| CN117571091A (en) * | 2024-01-16 | 2024-02-20 | 黑龙江中科工程管理咨询有限公司 | Water level monitoring device |
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