CN109900339A - A kind of surface gathered water liquid level emasuring device of embedded dual sensor - Google Patents
A kind of surface gathered water liquid level emasuring device of embedded dual sensor Download PDFInfo
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- CN109900339A CN109900339A CN201910303884.0A CN201910303884A CN109900339A CN 109900339 A CN109900339 A CN 109900339A CN 201910303884 A CN201910303884 A CN 201910303884A CN 109900339 A CN109900339 A CN 109900339A
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- liquid level
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Abstract
The present invention provides a kind of surface gathered water liquid level emasuring device of embedded dual sensor comprising has steel apparatus main body, the first measurement room, the second measurement room and inner cavity chamber are equipped in the steel apparatus main body.Static pressure transducer and differential pressure pickup are additionally provided with inside the inner cavity chamber, the first measurement room, the second measurement room and the inner cavity chamber are connected to by via hole, and transmit pressure by silicone oil.In-site installation of the present invention is convenient, does not need to carry out zero point amendment operation, sealing protection grade is high, and measurement accuracy is higher than traditional static pressure measurement mode, alleviates influence of fluctuations of the measurement result by atmospheric pressure.Acquisition and level gauging compensation, technology and by being built-in with temperature sensor, while for water temperature are realized convenient.
Description
Technical field
The present invention relates to technical field of liquid level measurement more particularly to a kind of surface gathered water level gaugings of embedded dual sensor
Device.
Background technique
In the prior art, level gauging is typically all that pressure difference mode and static pressure force mode is used to measure liquid level, quiet
The measurement accuracy of pressure pattern is opposite can be weaker, and the measurement accuracy of pressure difference mode is relatively higher, but the sensor other end
Atmosphere must be led to.
And in the level gauge of surface gathered water, need for relevant apparatus to be embedded in underground, while being also contemplated that IP68 protection,
In the application of this technology scene, static pressure force mode can only be used, i.e., liquid level is measured using static pressure transducer.But this
The shortcomings that kind measurement method, is influenced by atmospheric pressure, can influence measurement accuracy because atmospheric pressure fluctuates, there is measurement
Zero drift in main amplifier, it is especially bigger on the surface gathered water liquidometer influence of low measurement liquid level range, or even measure inaccurate.
Summary of the invention
The present invention makes improvement in view of the above technical problems, i.e., technical problem to be solved by the invention is to provide in one kind
The surface gathered water liquid level emasuring device of embedding dual sensor mitigates atmosphere by built-in differential pressure pickup and static pressure transducer respectively
The influence of fluctuations of pressure reduces the drift of measurement zero point.
In order to solve the above-mentioned technical problem, a kind of technical solution of the invention is: a kind of road surface product of embedded dual sensor
Aqueous level measuring arrangement, which is characterized in that the surface gathered water liquid level emasuring device includes steel apparatus main body, the steel
The first measurement room, the second measurement room and inner cavity chamber are equipped in apparatus main body.
Wherein:
The first measurement room is set to steel apparatus main body upper end；
The second measurement room is set to steel apparatus main body lower end；
Static pressure transducer and differential pressure pickup are additionally provided with inside the inner cavity chamber, the static pressure transducer and the pressure difference pass
Sensor passes through conducting wire group respectively and draws from the side of the steel apparatus main body；
The first measurement room, the second measurement room and the inner cavity chamber are connected to by via hole.
Further, the steel apparatus main body is processed, welded and is encapsulated using stainless steel material.
Further, in the first measurement room, the second measurement room, the inner cavity chamber and the via hole
Portion is filled with silicone oil.
Further, the upper surface of the first measurement room and the lower end surface of the second measurement room are respectively set
Flexible rigidity diaphragm.
Further, temperature sensor is additionally provided with inside the inner cavity chamber, the temperature sensor passes through the conducting wire
Group is drawn from steel apparatus main body side.
Further, the lateral side regions that the conducting wire group is drawn from the steel apparatus main body use sealant pouring and sealing.
Further, the via hole is void column shape pore, is separately positioned on the top and lower section of the inner cavity chamber, and with
The central area of the inner cavity chamber communicates.
Compared with prior art, the invention has the following advantages:
(1) by the way that differential pressure pickup and static pressure transducer is respectively set, for adapting to different fluid level conditions, when no level gauging
When, zero point will not follow the fluctuation of atmospheric pressure and fluctuate；It, can be with when thering is level gauging and water level to be more than device height
Atmospheric pressure value at that time compensates to set, woth no need to do second of compensation again；
(2) in-site installation is convenient, does not need to carry out zero point amendment operation；
(3) sealing protection of IP68 grade can be carried out；
(4) main structure combines elastic rigidity diaphragm using steel, and construction packages are reliable；
(5) compared to static pressure type measurement method traditionally, precision is higher；
(6) also it is built-in with temperature sensor simultaneously, while acquisition for water temperature and level gauging compensation, technology are realized more square
Just.
Detailed description of the invention
Fig. 1 is that the main structure dissection of the surface gathered water liquid level emasuring device of the embedded dual sensor of the embodiment of the present invention is shown
It is intended to.
Fig. 2 is that the main structure vertical view of the surface gathered water liquid level emasuring device of the embedded dual sensor of the embodiment of the present invention is shown
It is intended to.
Fig. 3 is the electrical connection exemplary diagram of the surface gathered water liquid level emasuring device of embedded dual sensor of the invention.
Fig. 4 is the main structure of the surface gathered water liquid level emasuring device of the embedded dual sensor of the embodiment of the present invention with mark
The dissection schematic diagram of ruler label.
Fig. 5 is the built-in sensors work of the surface gathered water liquid level emasuring device of the embedded dual sensor of the embodiment of the present invention
Switch schematic diagram.
In Fig. 1: 1- steel apparatus main body, 101- first measure room, 102- second measure room, 103- inner cavity chamber,
104- static pressure transducer, 105- differential pressure pickup, 106- conducting wire group, 107- via hole, 108- temperature sensor, 109- Elastic Steel
Property diaphragm, 110- silicone oil.
In Fig. 2: 1- steel apparatus main body, 109- elasticity rigidity diaphragm.
In Fig. 3: 104- static pressure transducer, 105- differential pressure pickup, 108- temperature sensor, 201- microprocessor, 202-
Signal processing unit, 203- power supply unit.
In Fig. 4: 1- steel apparatus main body, 104- static pressure transducer, 105- differential pressure pickup, 108- temperature sensor.
Specific embodiment
The required attached drawing of specific embodiment will be briefly described below, it should be apparent that, it is described
Embodiment is a part of the embodiments of the present invention, and attached drawing is some embodiments of the present invention, for those of ordinary skill in the art
For, without creative efforts, it can also be obtained according to these attached drawings the attached drawing of other forms.
It should be noted that unless otherwise clearly defined and limited, term " connection ", " phase in present invention description
Even ", " installation " shall be understood in a broad sense, for example, it may be being integrally connected, being fixedly connected or being detachably connected；It can be
It is directly connected to, is also possible to indirectly connected through an intermediary by mechanical structure or electronics.
For the ordinary skill in the art, it can understand above-mentioned term in the present invention as the case may be
Concrete meaning.
Following disclosure provide different embodiments perhaps embodiment for realizing different structure of the invention or
Different implementation methods.In order to simplify disclosure of the invention, hereinafter the component of specific embodiment and setting are described.This theory
Differential pressure pickup in bright can also be differential pressure pick-up.
As shown in Figure 1, a kind of surface gathered water liquid level emasuring device of embedded dual sensor comprising there is steel apparatus main body
1, the interior first measurement room 101, second that is equipped with of the steel apparatus main body 1 measures room 102 and inner cavity chamber 103；Described
One measurement room 101 is set to 1 upper end of steel apparatus main body；The second measurement room 102 is set to the steel device master
1 lower end of body；The first measurement room 101, the second measurement room 102 and the inner cavity chamber 103 pass through via hole 107
Connection.
Static pressure transducer 104, differential pressure pickup 105 and temperature sensor are additionally provided with inside the inner cavity chamber 103
108, the static pressure transducer 104, the differential pressure pickup 105 and the temperature sensor 108 pass through conducting wire group 106 respectively
It is drawn from the side of the steel apparatus main body 1.
In the present embodiment, the steel apparatus main body 1 is processed, welded and is encapsulated using stainless steel material.
The steel apparatus main body 1 is stereochemical structure, and the inner cavity chamber 103 is the rectangular body structure that inside is cavity, described first
Measurement room 101 and the second measurement room 102 are the relatively thin rectangle structure of height that inside is cavity.
In the present embodiment, the steel apparatus main body 1 carries out processing and fabricating by stainless steel material, using IP68 grade
Sealing protection.
The first measurement room 101, the second measurement room 102, the inner cavity chamber 103 and the via hole
Silicone oil 110 is filled with inside 107.In the present embodiment, the silicone oil 110 is transmitted for pressure, can will act at described the
Pressure on one measurement room 101 or the second measurement room 102 is transmitted into the inner cavity chamber 103, and described in warp
The silicone oil 110 in inner cavity chamber 103, and the static pressure transducer 104 and the differential pressure pickup 105 are acted on, pass through
Pressure measurement is carried out to the static pressure transducer 104 or the differential pressure pickup 105, carrys out indirect obtain and acts on described first
The pressure for measuring room 101 or the water on the second measurement room 102, to calculate corresponding ponding level value.
The upper surface of the first measurement room 101 and the lower end surface of the second measurement room 102 are respectively arranged with
Elastic rigidity diaphragm 109.In the present embodiment, the pressure of surface gathered water acts on the upper surface of the first measurement room 101
Or the lower end surface of the second measurement room 102, so that the elasticity rigidity diaphragm 109 is squeezed deformation, in institute
In the deformation process for stating elastic rigidity diaphragm 109, in the first measurement room 101 or the second measurement room 102
The internal silicone oil 110, is also correspondingly flowed because of extruding, finally makees pressure by the transmitting of the silicone oil 110
For the static pressure transducer 104 or the differential pressure pickup 105.
In the present embodiment, the temperature sensor 108 passes through the elastic rigidity film for measuring water temperature, surface gathered water
Water temperature is transmitted to the temperature sensor 108, the acquisition of the water temperature, it may also be used for described by piece 109 and the silicone oil 110
The temperature-compensating of static pressure transducer 104 or the differential pressure pickup 105.
The lateral side regions that the conducting wire group 106 is drawn from the steel apparatus main body 1 use sealant pouring and sealing.
In the present embodiment, the static pressure transducer 104, the differential pressure pickup 105 and the temperature sensor 108
The steel apparatus main body 1 is drawn by the conducting wire group 106 respectively, the conducting wire group 106 includes the conductor wire of multi-thread cable.
In order to achieve the effect that sealing, in place of the conducting wire via hole of the steel apparatus main body 1, encapsulating processing is carried out respectively.
The via hole 107 is void column shape pore, is separately positioned on the top and lower section of the inner cavity chamber 103, and with institute
The central area for stating inner cavity chamber 103 communicates.
The working principle of the invention is such that
The surface gathered water liquid level emasuring device is embedded in ground appropriate location, and when surface gathered water is fewer, water height does not have
More than the surface gathered water liquid level emasuring device height when, the hydraulic pressure of surface gathered water act only on it is described second measurement room
102, hydraulic pressure is acted on the elastic rigidity diaphragm 109 and is transmitted in the inner cavity chamber 103 by the silicone oil 110, most
The differential pressure pickup 105 is acted on eventually, can induce pressure P1 at this time；Atmospheric pressure also acts on described first and surveys simultaneously
Room 101 is measured, and the differential pressure pickup 105 is acted on by the silicone oil 110, atmospheric pressure P2 can be induced.According to
The theoretical basis of the prior art, the pressure P1 be also in fact include atmospheric pressure P2, carry out liquid level conversion during,
It is first to calculate pressure difference, is then accordingly converted, it follows that atmospheric pressure P2 has not had when progress pressure difference is subtracted each other
Have, so, in this case, the level gauging of surface gathered water is in fact unrelated with atmosphere, passes through the surface gathered water
Liquid level emasuring device carries out level gauging, is not influenced by atmospheric pressure, the zero point of measurement will not fluctuate.
When surface gathered water is more, when height is more than the height of the surface gathered water liquid level emasuring device, hydraulic pressure is logical
The first measurement room 101 is crossed, and the static pressure transducer 104 is acted on by the silicone oil 110, induces pressure P3,
Liquid level signal is conversed through the differential pressure pickup 105 calculating again.
It is following further by the explanation of rough formula scales, go deep into technology realization principle of the invention:
Refering to what is shown in Fig. 4, the working sensor in conjunction with Fig. 5 switches schematic diagram, it is assumed that following parameter:
H is ponding liquid level emasuring device total height, and H=H1+H2；
H is measurement liquid level, and is low measurement liquid level；
L is measurement liquid level, and is high measurement liquid level；
G is acceleration of gravity；
R is water density；
P1 is local atmospheric pressure value；
Atmospheric pressure value when P2 is switching；
K1, K2 are operation coefficient；
Sensor 1 is static pressure transducer, i.e., the static pressure transducer 104 in the present embodiment；
Sensor 2 is differential pressure pickup, i.e., the differential pressure pickup 105 in the present embodiment；
Sensor 3 is temperature sensor, i.e., the temperature sensor 108 in the present embodiment.
When measuring liquid level h lower than ponding liquid level emasuring device overall height H, sensor 2(differential pressure pickup) work: this
When, when measurement liquid level h is lower than sensor height H, sensor 2(differential pressure pickup) work, the dipped second measurement room of liquid level, pressure
Power is transmitted to sensor 2(differential pressure pickup by silicone oil), induce pressure 1；Atmospheric pressure passes through the first measurement room simultaneously
Induction, pressure value are transmitted to sensor 2(differential pressure pickup by silicone oil), sensor 2(differential pressure pickup) pass through positive negative sense phase
Subtract calculating and be converted into liquid level signal, and measuring signal is drawn by conducting wire group 106.Calculation formula (one) is as follows at this time: (in following
* represent multiplication sign)
Liquid level 1=(the first measurement room induction pressure)-(the second measurement room induction pressure)+K1
=(H+P1) * r * g-(h+P1) * r * g+K1
=(H- h) * r * g+K1
By above-mentioned formula (one) it is found that liquid level is unrelated with atmospheric pressure, when H, K1, r, g are steady state value, liquid level and h are proportional
Relationship.
When measuring liquid level L higher than sensor height H, sensor 1(static pressure transducer) work: at this point, measurement liquid level L high
In sensor height H, sensor 1(static pressure transducer) it works, the dipped entire measuring chamber of liquid level, pressure is transmitted to by silicone oil
Sensor 1(static pressure transducer), pressure is induced, meanwhile, sensor 2(differential pressure pickup) it is converted into liquid level signal by calculating,
Measuring signal is drawn by conducting wire group 106.Calculation formula (two) at this time is as follows:
Liquid level 2=(the second measurement room induction pressure)+K2
=(L+P1-P2) * r * g+K2
By above-mentioned formula (two) it is found that level value and atmospheric pressure there are also some relationships, when measurement liquid level is higher than the survey of ponding liquid level
Amount device overall height H and be switched to sensor 1(static pressure transducer) work when, microprocessor (MCU) connected to it can lead to
It crosses calculating and presets P2 value (atmospheric pressure value when switching), reduce the influence of atmospheric pressure, at this time only and atmospheric pressure
It fluctuates related.When K2, r, g are steady state value, liquid level and the proportional relationship of L.
As one of optional embodiment, in the microprocessor (MCU) being connect with the ponding liquid level emasuring device,
It can also reconnect and be provided with barometric pressure sensor, directly the atmospheric pressure of synchronous acquisition at that time when carrying out level gauging
Value.
During the realization of technical principle of the invention, and there is significant difference on traditional technology, the present invention measures zero point
Very little will not be fluctuated or be fluctuated, is influenced very little by atmospheric pressure, overall measurement accuracy is higher, simultaneously because not needing to being used for
The other end of the sensor of measurement is ventilated, and can carry out more tight sealing protection, easier for installation, overall structure is reliable.
As shown in figure 3, the surface gathered water liquid level emasuring device is when using connection, it is the static pressure transducer 104, described
Differential pressure pickup 105 and the temperature sensor 108 are separately connected signal processing unit 202, the signal processing unit 202
Microprocessor 201, the signal processing unit 202 and the microprocessor 201 are connected by providing power supply for legendary small dragon with horns unit 203
Power supply.
A kind of surface gathered water liquid level emasuring device of embedded dual sensor provided by the invention is passed by the way that pressure difference is respectively set
Sensor and static pressure transducer, for appropriate different fluid level condition, when no level gauging, zero point will not follow atmospheric pressure
Fluctuation and fluctuate；When having level gauging and water level is more than device height, can be mended with atmospheric pressure value at that time to set
It repays, woth no need to do second of compensation again.
A kind of surface gathered water liquid level emasuring device of embedded dual sensor provided by the invention, in-site installation is convenient, is not required to
Carry out zero point amendment operation.
A kind of surface gathered water liquid level emasuring device of embedded dual sensor provided by the invention, can carry out IP68 grade
Sealing protection；Main structure combines elastic rigidity diaphragm using steel, and construction packages are reliable.
The surface gathered water liquid level emasuring device of a kind of embedded dual sensor provided by the invention, compared to static pressure type traditionally
Measurement method, precision are higher；It is also built-in with temperature sensor simultaneously, while acquisition and level gauging compensation for water temperature, skill
Art is realized more convenient.
The foregoing is merely present pre-ferred embodiments, and only technical concepts and features to illustrate the invention, purpose exist
In those skilled in the art can understand the contents of the present invention and implements accordingly, but can not be limited with this of the invention
Protection scope.It is all according to equivalent changes and modifications within the scope of the patent application of the present invention, should all belong to covering scope of the present invention.
Claims (7)
1. a kind of surface gathered water liquid level emasuring device of embedded dual sensor, which is characterized in that the surface gathered water level gauging
Device includes steel apparatus main body (1), and the first measurement room (101), the second measurement are equipped in the steel apparatus main body (1)
Room (102) and inner cavity chamber (103)；
Wherein:
First measurement room (101) is set to steel apparatus main body (1) upper end；
Second measurement room (102) is set to steel apparatus main body (1) lower end；
Static pressure transducer (104) and differential pressure pickup (105), the static pressure sensing are additionally provided with inside the inner cavity chamber (103)
Device (104) and the differential pressure pickup (105) pass through conducting wire group (106) from the side of the steel apparatus main body (1) respectively
It draws；
First measurement room (101), second measurement room (102) and the inner cavity chamber (103) pass through via hole
(107) it is connected to.
2. a kind of surface gathered water liquid level emasuring device of embedded dual sensor according to claim 1, which is characterized in that institute
Stating steel apparatus main body (1) is processed, welded and is encapsulated using stainless steel material.
3. a kind of surface gathered water liquid level emasuring device of embedded dual sensor according to claim 1, which is characterized in that institute
State the first measurement room (101), second measurement room (102), the inner cavity chamber (103) and the via hole (107)
Inside is filled with silicone oil (110).
4. a kind of surface gathered water liquid level emasuring device of embedded dual sensor according to claim 1, which is characterized in that institute
The lower end surface of the upper surface and second measurement room (102) of stating the first measurement room (101) is respectively arranged with Elastic Steel
Property diaphragm (109).
5. a kind of surface gathered water liquid level emasuring device of embedded dual sensor according to claim 1, which is characterized in that institute
It states and is additionally provided with temperature sensor (108) inside inner cavity chamber (103), the temperature sensor (108) passes through the conducting wire group
(106) it is drawn from steel apparatus main body (1) side.
6. a kind of surface gathered water liquid level emasuring device of embedded dual sensor according to claim 1, which is characterized in that institute
It states the lateral side regions that conducting wire group (106) is drawn from the steel apparatus main body (1) and uses sealant pouring and sealing.
7. a kind of surface gathered water liquid level emasuring device of embedded dual sensor according to claim 1, which is characterized in that institute
Stating via hole (107) is void column shape pore, is separately positioned on the top and lower section of the inner cavity chamber (103), and with the inner cavity
The central area of room (103) communicates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910303884.0A CN109900339A (en) | 2019-04-16 | 2019-04-16 | A kind of surface gathered water liquid level emasuring device of embedded dual sensor |
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| CN201910303884.0A CN109900339A (en) | 2019-04-16 | 2019-04-16 | A kind of surface gathered water liquid level emasuring device of embedded dual sensor |
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| CN2141075Y (en) * | 1992-10-27 | 1993-08-25 | 徐宏宇 | Static-pressure level indicator for sealed containers |
| JP2002156267A (en) * | 2000-11-16 | 2002-05-31 | Nagoya City | Water level measuring apparatus |
| CN1537223A (en) * | 2001-08-01 | 2004-10-13 | 株式会社山武 | Pressure sensor |
| CN1869599A (en) * | 2005-05-27 | 2006-11-29 | 上海自动化仪表股份有限公司 | Multi-parameter sensor for measuring differential pressure/pressure/temp |
| CN202281660U (en) * | 2011-10-28 | 2012-06-20 | 山东昌润科技有限公司 | Compound temperature and differential pressure sensor |
| CN107870016A (en) * | 2016-09-26 | 2018-04-03 | 比亚迪股份有限公司 | Vehicle condensate tank of dehumidifier, method and vehicle |
| CN209459731U (en) * | 2019-04-16 | 2019-10-01 | 福州汇联宇科技有限公司 | A kind of surface gathered water liquid level emasuring device of embedded dual sensor |
-
2019
- 2019-04-16 CN CN201910303884.0A patent/CN109900339A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2141075Y (en) * | 1992-10-27 | 1993-08-25 | 徐宏宇 | Static-pressure level indicator for sealed containers |
| JP2002156267A (en) * | 2000-11-16 | 2002-05-31 | Nagoya City | Water level measuring apparatus |
| CN1537223A (en) * | 2001-08-01 | 2004-10-13 | 株式会社山武 | Pressure sensor |
| CN1869599A (en) * | 2005-05-27 | 2006-11-29 | 上海自动化仪表股份有限公司 | Multi-parameter sensor for measuring differential pressure/pressure/temp |
| CN202281660U (en) * | 2011-10-28 | 2012-06-20 | 山东昌润科技有限公司 | Compound temperature and differential pressure sensor |
| CN107870016A (en) * | 2016-09-26 | 2018-04-03 | 比亚迪股份有限公司 | Vehicle condensate tank of dehumidifier, method and vehicle |
| CN209459731U (en) * | 2019-04-16 | 2019-10-01 | 福州汇联宇科技有限公司 | A kind of surface gathered water liquid level emasuring device of embedded dual sensor |
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