CN106352945A - Liquid level measurement device - Google Patents
Liquid level measurement device Download PDFInfo
- Publication number
- CN106352945A CN106352945A CN201611035708.6A CN201611035708A CN106352945A CN 106352945 A CN106352945 A CN 106352945A CN 201611035708 A CN201611035708 A CN 201611035708A CN 106352945 A CN106352945 A CN 106352945A
- Authority
- CN
- China
- Prior art keywords
- air bag
- liquid level
- pressure
- liquid
- tested container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
Abstract
The invention relates to a liquid level measurement device for measuring the liquid surface position of liquid in a measured container. The liquid level measurement device comprises an air bag, a press plate, a connecting hose, a pressure transmitter and a liquid level calculator; the press plate is fixed in the measured container; the air bag is fixed with the press plate; one end of the connecting hose is connected with the air bag in a sealing mode; the pressure transmitter is located outside the measured container, a pressure measurement interface of the pressure transmitter is connected with the other end of the connecting hose in a sealing mode, and a comparison interface of the pressure transmitter is communicated with a space in the measured container; the signal input end of the liquid level calculator is connected with the pressure signal output end of the pressure transmitter, and the liquid level calculator receives a detected pressure value output by the pressure transmitter and calculates a detected height value, corresponding to the detected pressure value, of the liquid surface of the liquid in the measured container. According to the liquid level measurement device, the liquid surface height can be efficiently measured for a long term, and not only can the precision of a measurement result be guaranteed, but also the maintenance cost is low.
Description
Technical field
It relates to observation and control technology field, more particularly, to a kind of liquid level emasuring device.
Background technology
Existing automatic liquid level measurement apparatus main extension set tool fax mode and radar measurement system, wherein, mechanical fax side
Formula, the buoy that can float with liquid level in the setting of liquid level surface, buoy movement to diverse location can produce the signal of telecommunication of different sizes,
Convert electrical signals to liquid level signal eventually；Radar measurement system calculates actual liquid level by difference reflex time of radar wave.
No matter which kind of mode is it is necessary to contact measurement apparatus with liquid, or, cruelly leak in liquid surrounding enviroment, example
As: the buoy in mechanical electric transmission method is easily led to level gauging to lose efficacy by the reason such as liquid corrosion, fouling, and radar surveying fills
Put and need to be arranged on ullage, easily damaged by steam image, lead to level gauging to lose efficacy.Due to interior in aforementioned metering system
The device with electronic component for the portion is highly prone to pollution or the corrosion of liquid, and then leads to final measurement malfunction.
Content of the invention
A kind of liquid level emasuring device is provided, to solve in liquid level emasuring device of the prior art in the embodiment of the present invention
The pollution of electronic component liquid body or the problem of the malfunction corroded and lead to.
In order to solve above-mentioned technical problem, the embodiment of the invention discloses following technical scheme:
A kind of liquid level emasuring device, for measuring the liquid level position of liquid in tested container, comprising: air bag, pressing plate, connection
Flexible pipe, pressure transmitter and liquid level computer, wherein,
Described pressing plate is fixed in described tested container；
Described air bag is fixed with described pressing plate phase；
Described one end connecting flexible pipe is connected with described air sac sealing, and in the described inner chamber connecting flexible pipe and described air bag
Cavity be connected；
Described pressure transmitter is located at outside described tested container, and the pressure measurement interface of described pressure transmitter is soft with described connection
The other end of pipe is tightly connected, and the described inner chamber connecting flexible pipe is connected with the cavity in described pressure measurement interface, described pressure
The contrast interface of transmitter is connected with space in described tested container；
The signal input part of described liquid level computer is connected with the signal output end of described pressure transmitter, described
Liquid level computer receives the detection pressure value of described pressure transmitter output, and calculates and the described detection corresponding quilt of pressure value
The detection height value of the liquid level of liquid in xylometer.
Alternatively, described pressing plate is horizontally fixed in described tested container；Described air bag is fixed on the following table of described pressing plate
Face.
Alternatively, described air bag is lamellar air bag, and the lower surface of a side of described lamellar air bag and described pressing plate
Contact.
Alternatively, it is provided with the inducing QI lines of a plurality of connection in described air bag inner chamber.
Alternatively, described air bag is less than the position of minimum level in described tested container in the position in described tested container
Put.
Alternatively, in described air bag upper surface and described tested container, the distance between minimum level is more than or equal to 10 lis
Rice.
Alternatively, in described air bag, punching has the gas of preset pressure value in advance；Described preset pressure value is more than described tested
The pressure value in space in container.
Alternatively, the pressure threshold value of described gasbag ektexine is more than described air bag liquid in described tested container and produces
Big pressure value；
The described pressure threshold value connecting flexible pipe outer wall is more than the described air bag maximum that liquid produces in described tested container
Pressure value.
Alternatively, the outer wall thickness of described air bag is 0.5 centimetre～1 centimetre.
Alternatively, described liquid level computer is located at outside described tested container.
The technical scheme that embodiment of the disclosure provides can include following beneficial effect:
This liquid level emasuring device that the embodiment of the present disclosure provides, because air bag is fixed on inside tested container by pressing plate, and
And by connecting the pressure conduction that air bag receives by flexible pipe to the pressure transmitter outside tested container, and then calculated by liquid level
Device is calculated the liquid level of liquid in tested container.It can be seen that, in the present invention, only air bag, connection flexible pipe and liquid connect
Touch, and air bag and connection flexible pipe are all fixing, need not move, therefore, this liquid level emasuring device, electronics not only can be avoided
Element is contacted with liquid or cruelly leaks around liquid environment, and is located at liquid level inner part and all fixes and not liquid body corrosion, institute
Measurement result for a long time, efficiently liquid levels are highly measured can not only can be ensured with, this liquid level emasuring device
Accuracy, and maintenance cost is low.
It should be appreciated that above general description and detailed description hereinafter are only exemplary and explanatory, not
The disclosure can be limited.
Brief description
Accompanying drawing herein is merged in description and constitutes the part of this specification, shows the enforcement meeting the present invention
Example, and be used for explaining the principle of the present invention together with description.
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, for those of ordinary skill in the art
Speech, without having to pay creative labor, can also obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of scheme of installation of liquid level emasuring device provided in an embodiment of the present invention.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the present invention, real below in conjunction with the present invention
Apply the accompanying drawing in example, the enforcement it is clear that described is clearly and completely described to the technical scheme in the embodiment of the present invention
Example is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of not making creative work, all should belong to present invention protection
Scope.
Fig. 1 is the scheme of installation of liquid level emasuring device provided in an embodiment of the present invention.In FIG, 6 is tested container, 7
Liquid level position for the liquid in tested container.
As shown in figure 1, liquid level emasuring device provided in an embodiment of the present invention includes: air bag 1, pressing plate 2, connection flexible pipe 3, pressure
Power transmitter 4 and liquid level computer 5, wherein, pressing plate 2 is fixed in tested container 6；Air bag 1 is mutually fixed with pressing plate 2；Connect soft
One end of pipe 3 is tightly connected with air bag 1, and the described inner chamber connecting flexible pipe 3 is connected with the cavity in described air bag 1；Described
Pressure transmitter 4 is located at outside described tested container, the other end of the pressure measurement interface of described pressure transmitter 4 and described connection flexible pipe
It is tightly connected (not shown), and the described inner chamber connecting flexible pipe 3 is connected with the cavity in described pressure measurement interface that (in figure is not
Illustrate), the contrast interface of described pressure transmitter 4 is connected with space in described tested container 6, described liquid level computer 5
Signal input part is connected with the signal output end of described pressure transmitter 4, and described liquid level computer receives described pressure
The detection pressure value of transmitter output, and calculate the inspection with the liquid level of liquid in the described detection corresponding tested container of pressure value
Survey height value.
Pressing plate 2 is fixed in tested container 6.The effect of pressing plate 2 is to provide for air bag 1 to support, in embodiments of the present invention,
Pressing plate 2 can be fixed on the medial wall of tested container 6 it is also possible to pass through the bottom of support or other mechanism and tested container 6
Fixing.Damage in order to avoid pressing plate 2 is soaked by liquid, in embodiments of the present invention, the material of pressing plate 2 can be selected impermeable
Water but oil and acid-alkali-corrosive-resisting material.
Air bag 1 is mutually fixed with pressing plate 2, and such air bag 1 just can be fixed on inside tested container 6 by pressing plate.Air bag 1
Effect is subject to the pressure of the liquid in tested container 6, and pressure is delivered to pressure transmitter by connecting flexible pipe.In order to
Air bag 1 is avoided to be separated with pressing plate 2, in embodiments of the present invention, air bag 1 is fixed on the lower surface of pressing plate 2, the meeting of such air bag 1
It is pressed on the lower surface of pressing plate 2 so that air bag 1 and pressing plate 2 fixing compact in the presence of buoyancy.
Equally damage in order to avoid air bag 1 is soaked by liquid, in embodiments of the present invention, the material of air bag 1 can be selected
With airtight, waterproof but oily and acid-alkali-corrosive-resisting material.
In some embodiments of the invention, air bag adopts lamellar air bag, and that is, air bag is flat structure, and lamellar air bag
A side contact with the lower surface of pressing plate.Because air bag adopts single chamber, local easily occurs under pressure
Subside, and then unstable or pressurized rear air pressure is unstable after leading to air bag fixing, for this reason, in some embodiments of the invention,
The inducing QI lines of a plurality of connection can be set in air bag inner chamber, also will air bag inner chamber be separated into multiple be separated but connection
Plenum chamber is so that air bag is more stable after pressurized.
In order to ensure that air bag is always positioned in the liquid in tested container, in embodiments of the present invention, air bag is in described quilt
Position in xylometer is less than the position of minimum level in tested container 6.Alternatively, the upper surface of air bag is in tested container
The distance between minimum level is more than or equal to 10cm.
In order to improve the sensitivity to pressure for the air bag, in embodiments of the present invention, can also in air bag in advance punching have pre-
If the gas of pressure value, so, even if the height of the liquid in tested container is in minimum level position, then air bag and connection
Pressure in flexible pipe also can be higher than the given air bag of liquid itself pressure, and then make during pressure change sensitiveer so that survey
Amount result is more accurate.
It is destroyed in order to avoid under the pressure effect of air bag liquid in tested container, in embodiments of the present invention, air bag
The pressure threshold value of outer wall is more than the described air bag maximum pressure value that liquid produces in described tested container, for example: described air bag
Outer wall thickness can be 0.5 centimetre～1 centimetre.
Connect the flexible duct that flexible pipe 3 is hollow, the internal diameter connecting flexible pipe is 2 millimeters～3 millimeters.Connect the one of flexible pipe 3
End is led to airbags, for example: can be provided with valve on air bag, connect flexible pipe and be tightly connected with valve.Connect flexible pipe
Tube wall also has certain voltage endurance capability, particularly as follows: pressure threshold value is more than described air bag liquid in described tested container producing
Maximum pressure value.In addition, the material connecting flexible pipe also requires possess airtight, waterproof but oily, acid-alkali-corrosive-resisting energy
Power.
Pressure transmitter 4 is common differential pressure-measuring device, and its connected mode and operation principle are that this area is general
Known to logical technical staff, will not be described here.After air bag receives fluid pressure, gas enters into pressure by connecting flexible pipe
In the pressure measurement interface of transmitter 4.
Contain the density value ρ of liquid in tested container in liquid level computer 5 internal memory, in addition, also depositing in liquid level computer 5
Contain initial liquid height value h of liquid in tested container0And the corresponding initial pressure value of initial liquid height value of liquid
p0.After liquid level computer 5 receives the detection pressure value of pressure transmitter output, using density value, initial liquid height value
To detect now liquid level corresponding detection height value with initial pressure value.
Height value can be on the basis of the opening of tested container it is also possible on the basis of the bottom of tested container, at this
In inventive embodiments, on the basis of the bottom of tested container as a example illustrate.
Pressure formula is p=ρ gh, so initial pressure value p0=ρ gh0；
Correspondingly, liquid level corresponding detection pressure value p during current detection1=ρ gh1.
So, h1=(p1*h0)/p0
Therefore, using above-mentioned formula, you can be calculated current detection liquid level corresponding detection height value.
In embodiment of the present invention liquid level computer 5 can be industrial computer or single-chip microcomputer or other has meter
The electronic machine of calculation ability.In addition, being also provided with memorizer in liquid level computer 5, for storing liquid in tested container
The density value ρ of body, initial liquid height value h of liquid in tested container0And the initial liquid height value of liquid is corresponding just
Beginning pressure value p0.
This liquid level emasuring device that the embodiment of the present disclosure provides, because air bag is fixed on inside tested container by pressing plate, and
And by connecting the pressure conduction that air bag receives by flexible pipe to the pressure transmitter outside tested container, and then calculated by liquid level
Device is calculated the liquid level of liquid in tested container.It can be seen that, in the present invention, only air bag, connection flexible pipe and liquid connect
Touch, and air bag and connection flexible pipe are all fixing, need not move, therefore, this liquid level emasuring device, electronics not only can be avoided
Element is contacted with liquid or cruelly leaks around liquid environment, and is located at liquid level inner part and all fixes and not liquid body corrosion, institute
Measurement result for a long time, efficiently liquid levels are highly measured can not only can be ensured with, this liquid level emasuring device
Accuracy, and maintenance cost is low.
It should be noted that herein, the relational terms of such as " first " and " second " or the like are used merely to one
Individual entity or operation are made a distinction with another entity or operation, and not necessarily require or imply these entities or operate it
Between there is any this actual relation or order.And, term " inclusion ", "comprising" or its any other variant are intended to
Cover comprising of nonexcludability, so that including a series of process of key elements, method, article or equipment not only include those
Key element, but also include other key elements being not expressly set out, or also include for this process, method, article or set
Standby intrinsic key element.In the absence of more restrictions, the key element that limited by sentence "including a ..." it is not excluded that
Also there is other identical element in process, method, article or the equipment including described key element.
The above is only the specific embodiment of the present invention, makes skilled artisans appreciate that or realizing this
Bright.Multiple modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and be to fit to and principles disclosed herein and features of novelty phase one
The scope the widest causing.
Claims (10)
1. a kind of liquid level emasuring device, for measuring the liquid level position of liquid in tested container it is characterised in that including: air bag,
Pressing plate, connection flexible pipe, pressure transmitter and liquid level computer, wherein,
Described pressing plate is fixed in described tested container；
Described air bag is fixed with described pressing plate phase；
Described one end connecting flexible pipe is connected with described air sac sealing, and the sky in the described inner chamber connecting flexible pipe and described air bag
Chamber is connected；
Described pressure transmitter is located at outside described tested container, and the pressure measurement interface of described pressure transmitter connects flexible pipe with described
The other end is tightly connected, and the described inner chamber connecting flexible pipe is connected with the cavity in described pressure measurement interface, described pressure inverting
The contrast interface of device is connected with space in described tested container；
The signal input part of described liquid level computer is connected with the signal output end of described pressure transmitter, described liquid level
Computer receives the detection pressure value of described pressure transmitter output, and calculates and the described detection corresponding tested appearance of pressure value
The detection height value of the liquid level of liquid in device.
2. device according to claim 1 it is characterised in that
Described pressing plate is horizontally fixed in described tested container；Described air bag is fixed on the lower surface of described pressing plate.
3. device according to claim 1 it is characterised in that
Described air bag is lamellar air bag, and a side of described lamellar air bag is contacted with the lower surface of described pressing plate.
4. device according to claim 3 it is characterised in that
It is provided with the inducing QI lines of a plurality of connection in described air bag inner chamber.
5. device according to claim 3 it is characterised in that
Described air bag is less than the position of minimum level in described tested container in the position in described tested container.
6. device according to claim 5 it is characterised in that
In described air bag upper surface and described tested container, the distance between minimum level is more than or equal to 10 centimetres.
7. device according to claim 3 it is characterised in that
In described air bag, punching has the gas of preset pressure value in advance；Described preset pressure value is more than space in described tested container
Pressure value.
8. device according to claim 1 it is characterised in that
The pressure threshold value of described gasbag ektexine is more than the described air bag maximum pressure value that liquid produces in described tested container；
The described pressure threshold value connecting flexible pipe outer wall is more than the described air bag maximum pressure that liquid produces in described tested container
Value.
9. device according to claim 1 it is characterised in that
The outer wall thickness of described air bag is 0.5 centimetre～1 centimetre.
10. device according to claim 1 it is characterised in that
Described liquid level computer is located at outside described tested container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611035708.6A CN106352945A (en) | 2016-11-22 | 2016-11-22 | Liquid level measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611035708.6A CN106352945A (en) | 2016-11-22 | 2016-11-22 | Liquid level measurement device |
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| Publication Number | Publication Date |
|---|---|
| CN106352945A true CN106352945A (en) | 2017-01-25 |
Family
ID=57861670
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611035708.6A Pending CN106352945A (en) | 2016-11-22 | 2016-11-22 | Liquid level measurement device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709603A (en) * | 2018-05-05 | 2018-10-26 | 乌海黑猫炭黑有限责任公司 | A kind of carbon black material level of storage tank meter |
| CN110006502A (en) * | 2019-03-01 | 2019-07-12 | 泉州市春川贸易有限公司 | A kind of Electrostaticproof high-bin level alarmer pushing principle based on air extrusion |
| CN110806245A (en) * | 2019-10-09 | 2020-02-18 | 厦门通富微电子有限公司 | Liquid level sensing device |
| CN111771631A (en) * | 2020-07-14 | 2020-10-16 | 中国水利水电科学研究院 | Hydro-fluctuation belt water and soil conservation system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3340699A (en) * | 1965-06-11 | 1967-09-12 | Little Inc A | Cryogenic condenser with liquid level sensing and control |
| WO2008039135A1 (en) * | 2006-09-29 | 2008-04-03 | Forsstroem Aake | An arrangement determining a liquid level within a container |
| KR20120049771A (en) * | 2010-11-09 | 2012-05-17 | 주식회사 나래나노텍 | A liquid level sensor and a liquid level sensing method, and an apparatus and a method for providing liquid having the same |
| CN103592000A (en) * | 2013-11-25 | 2014-02-19 | 重庆纤度科技有限公司 | Liquid level measuring device |
| CN205066888U (en) * | 2015-04-30 | 2016-03-02 | 上海梅山钢铁股份有限公司 | Novel magnetism formula level gauge |
| CN205483166U (en) * | 2016-03-30 | 2016-08-17 | 连云港大发环保科技有限公司 | Atmospheric pressure sensing level gauge |
-
2016
- 2016-11-22 CN CN201611035708.6A patent/CN106352945A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3340699A (en) * | 1965-06-11 | 1967-09-12 | Little Inc A | Cryogenic condenser with liquid level sensing and control |
| WO2008039135A1 (en) * | 2006-09-29 | 2008-04-03 | Forsstroem Aake | An arrangement determining a liquid level within a container |
| KR20120049771A (en) * | 2010-11-09 | 2012-05-17 | 주식회사 나래나노텍 | A liquid level sensor and a liquid level sensing method, and an apparatus and a method for providing liquid having the same |
| CN103592000A (en) * | 2013-11-25 | 2014-02-19 | 重庆纤度科技有限公司 | Liquid level measuring device |
| CN205066888U (en) * | 2015-04-30 | 2016-03-02 | 上海梅山钢铁股份有限公司 | Novel magnetism formula level gauge |
| CN205483166U (en) * | 2016-03-30 | 2016-08-17 | 连云港大发环保科技有限公司 | Atmospheric pressure sensing level gauge |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709603A (en) * | 2018-05-05 | 2018-10-26 | 乌海黑猫炭黑有限责任公司 | A kind of carbon black material level of storage tank meter |
| CN110006502A (en) * | 2019-03-01 | 2019-07-12 | 泉州市春川贸易有限公司 | A kind of Electrostaticproof high-bin level alarmer pushing principle based on air extrusion |
| CN110006502B (en) * | 2019-03-01 | 2020-07-17 | 武汉新兴惠科静电科技有限公司 | Anti-static high material level alarm based on air extrusion pushing principle |
| CN110806245A (en) * | 2019-10-09 | 2020-02-18 | 厦门通富微电子有限公司 | Liquid level sensing device |
| CN111771631A (en) * | 2020-07-14 | 2020-10-16 | 中国水利水电科学研究院 | Hydro-fluctuation belt water and soil conservation system and method |
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