CN117232612A - Device for measuring boundary position and boundary position measuring method - Google Patents
Device for measuring boundary position and boundary position measuring method Download PDFInfo
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- CN117232612A CN117232612A CN202210633186.9A CN202210633186A CN117232612A CN 117232612 A CN117232612 A CN 117232612A CN 202210633186 A CN202210633186 A CN 202210633186A CN 117232612 A CN117232612 A CN 117232612A
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- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical group ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
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- 229910000838 Al alloy Inorganic materials 0.000 description 1
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
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- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The application relates to a device for measuring an interface and an interface measuring method. The device comprises a liquid storage tank, a first detector and a second detector. The liquid storage tank is provided with a containing cavity, and the containing cavity is used for containing liquid so that the liquid is layered in the containing cavity and forms a first liquid layer and a second liquid layer which are arranged up and down. The first detector is arranged in the liquid storage tank and is used for detecting the liquid level of liquid in the accommodating cavity. The second detector is arranged in the liquid storage tank and used for detecting the depth of one of the first liquid layer and the second liquid layer. According to the device, the first detector is designed to measure the liquid level of the liquid in the accommodating cavity in the liquid storage tank, the second detector is designed to measure the depth of one of the first liquid layer and the second liquid layer formed after the liquid is layered, and the interface between the first liquid layer and the second liquid layer is obtained through calculation of the liquid level and the depth, so that the measurement accuracy is high.
Description
Technical Field
The application relates to the technical field of interface measurement, in particular to a device for interface measurement and an interface measurement method.
Background
At present, various measuring devices are applied to material production, so that the development of industry is greatly accelerated, and in some special material production, the measuring devices are required to detect the boundary position of liquid after layering, so as to control the production process.
However, the current measuring device cannot realize the measurement of the interface, and cannot meet the production requirement.
Disclosure of Invention
The application provides a heat preservation component and a lithium salt production device, and aims to improve heat preservation effect.
In a first aspect, the application provides a device for interfacial position measurement, comprising a liquid storage tank, a first meter and a second meter. The liquid storage tank is provided with a containing cavity, and the containing cavity is used for containing liquid so that the liquid is layered in the containing cavity and forms a first liquid layer and a second liquid layer which are arranged up and down. The first detector is arranged in the liquid storage tank and is used for detecting the liquid level of liquid in the accommodating cavity. The second detector is arranged in the liquid storage tank and used for detecting the depth of one of the first liquid layer and the second liquid layer.
According to the device, the first detector is designed to measure the liquid level of the liquid in the accommodating cavity in the liquid storage tank, the second detector is designed to measure the depth of one of the first liquid layer and the second liquid layer formed after the liquid is layered, and the interface position between the first liquid layer and the second liquid layer, namely the interface height, is obtained through calculation of the liquid level and the depth, so that the measurement of the interface position is converted into the measurement of the liquid level and the depth, and the problem that the interface position cannot be measured is solved. The device provided by the application realizes the measurement of the interface position by only two detectors, and has the advantages of simple structure and high measurement accuracy. Moreover, the first detector and the second detector can realize timely detection, so that the flow rate of liquid can be adjusted timely, the continuity of production is ensured, and the production efficiency is improved.
According to one embodiment of the application, the first liquid layer has a density that is less than the density of the second liquid layer, and the first detector is arranged to be higher than the liquid level of the first liquid layer.
In these alternative embodiments, the first level gauge is higher than the level of the first liquid layer, and does not need to contact the liquid in the accommodating cavity, and the level of the liquid can be measured quickly and accurately without being influenced by pressure and gas of temperature.
According to one embodiment of the application, the difference in density between the first liquid layer and the second liquid layer is less than 0.1g/cm 3 The first gauge comprises a radar level gauge.
In the alternative embodiments, the radar liquid level gauge is designed, the radar liquid level gauge is arranged on the upper part of the liquid storage tank and higher than the first liquid layer, the radar liquid level gauge is convenient to install and is used for non-contact measurement with liquid, electromagnetic waves emitted by the radar liquid level gauge are not influenced by external conditions such as environment, and the radar liquid level gauge has the advantages of being high in accuracy, large in measuring range, simple to install, wide in application and the like.
According to one embodiment of the application, the density of the first liquid layer is smaller than the density of the second liquid layer, and the second detector is arranged higher than the liquid level of the first liquid layer and is used for detecting the depth of the first liquid layer.
In these alternative embodiments, the second detector is used for detecting the depth of the first liquid layer arranged on the upper layer, the first detector is used for detecting the liquid level of the liquid, the difference value is made between the liquid level and the depth, the interface position of the layered part between the first liquid layer and the second liquid layer is obtained, the depth of the second liquid layer is measured without penetrating the first liquid layer, the first liquid layer and the second liquid layer are prevented from being affected mutually, and the measuring method is simple and convenient and has high accuracy.
In these alternative embodiments, the first liquid layer has a dielectric constant that differs from the second liquid layer by more than 10 and the second liquid layer has a dielectric constant that is less than 10, the second meter comprising a capacitive liquid level meter.
In these alternative embodiments, the capacitive gauge is designed to accommodate the measurement of liquids where the difference in density between the first and second liquid layers is small and the difference in dielectric constant between the first and second liquid layers is large. The capacitance type liquid level meter can measure at high temperature, high pressure and corrosion conditions, and is also suitable for measuring various liquids, oils and the like so as to ensure accurate measurement of the liquid in the liquid storage tank.
According to one embodiment of the application, the liquid storage tank further comprises:
the first liquid outlet is communicated with the accommodating cavity and used for discharging the first liquid layer from the liquid storage tank.
In these alternative embodiments, the first liquid layer is drained from the liquid storage tank through the first liquid drain port by determining the interface between the first liquid layer and the second liquid layer, and the next production run is entered. The liquid storage tank and the first liquid outlet are controlled to be discharged so as to adjust the flow velocity of the first liquid layer, thereby realizing continuous and controllable production and effectively preventing the second liquid layer from flowing out of the first liquid outlet.
According to one embodiment of the application, the liquid storage tank further comprises:
the second liquid outlet is communicated with the accommodating cavity and is used for discharging the second liquid layer from the liquid storage tank.
In these alternative embodiments, the second liquid layer is drained from the liquid storage tank through the second liquid drain by determining the interface between the first liquid layer and the second liquid layer, and into the next production run. The flow rate of the second liquid layer is adjusted by controlling the liquid storage tank and the second liquid outlet, so that production continuity and controllability are realized, and the first liquid layer is effectively prevented from flowing out of the second liquid outlet.
According to one embodiment of the application, the receiving chamber is provided with a port communicating with the receiving chamber, the device further comprising:
and the separator is connected to the liquid storage tank and is used for separating liquid to form a first liquid layer and a second liquid layer and conveying the first liquid layer and the second liquid layer into the accommodating cavity through the port.
In these alternative embodiments, the separator separates the liquid to form the first liquid layer and the second liquid layer, so that the first liquid layer and the second liquid layer are directly layered in the accommodating cavity of the liquid storage tank, thereby saving standing layering time and improving production efficiency. In addition, the separator may remove a part of impurities or particulate matters, etc., to purify the first liquid layer and the second liquid layer.
According to one embodiment of the application, the separator comprises a demulsifier separator.
In these alternative embodiments, one of the first and second liquid layers is collected in the emulsion breaking separator by coalescence and emulsion breaking action and is layered by means of the density difference of the two phases, thereby achieving a rapid separation of the first and second liquid layers.
According to one embodiment of the application, the apparatus further comprises:
and the filter is connected with the separator and is used for filtering the liquid.
In these alternative embodiments, the liquid is filtered by passing through a filter to remove particulates, impurities, etc. before being separated in the separator, thereby purifying the liquid and also effectively preventing the separator and the liquid tank from being clogged with particulates or impurities.
According to one embodiment of the application, the apparatus further comprises:
and a liquid circulation pipeline connecting the circulation port of the separator and the circulation port of the filter and serving as a passage for liquid circulation between the separator and the filter.
In these alternative embodiments, a liquid circulation pipeline is arranged between the separator and the filter to connect the separator and the filter, so that the liquid filtered by the filter enters the separator through the liquid circulation pipeline, and the pipeline can be routed according to the field requirement, and is easy to assemble and transport.
In a second aspect, the present application provides an interface measurement method, including the steps of:
providing a liquid storage tank, wherein the liquid storage tank is provided with a containing cavity;
providing a first meter;
providing a second meter;
injecting liquid into the accommodating cavity so as to enable the liquid to be layered in the accommodating cavity and form a first liquid layer and a second liquid layer which are arranged up and down;
detecting the liquid level of the liquid in the accommodating cavity by adopting a first detector;
the depth of one of the first liquid layer and the second liquid layer is detected with a second detector.
According to the interface measuring method, the first detector is used for measuring the liquid level of the liquid in the accommodating cavity of the liquid storage tank, the second detector is used for measuring the depth of one of the first liquid layer and the second liquid layer formed after the liquid is layered, the difference value is calculated between the liquid level and the depth, and the interface between the first liquid layer and the second liquid layer is obtained, so that the measurement of the interface is converted into the measurement of the liquid level and the depth, the measuring method is simple and rapid, the measuring accuracy is high, and the production efficiency is improved.
According to one embodiment of the application, before injecting the liquid into the containing cavity, it further comprises:
the liquids are separated in a filter to form a first liquid layer and a second liquid layer.
In these alternative embodiments, the liquid is pretreated, and the first liquid layer and the second liquid layer which are layered are formed before the liquid flows into the accommodating cavity, so that standing layering time in the accommodating cavity in the liquid storage tank is saved, and the production efficiency is improved.
According to one embodiment of the application, the means of separation includes demulsification.
In these alternative embodiments, the rapid separation of the first liquid layer from the second liquid layer is achieved based on the difference in polarity between the first liquid layer and the second liquid layer.
According to one embodiment of the application, before separating the liquid in the filter, further comprising:
the liquid is filtered in a filter.
In these alternative embodiments, the liquid is filtered to remove impurities and purify the liquid before it is separated in the filter.
According to one embodiment of the application, after filtering the liquid in the filter, it further comprises:
and conveying the filtered liquid into the filter through a liquid circulation pipeline.
In these alternative embodiments, the liquid filtered by the filter is introduced into the separator via a liquid flow line, the filter being connected in series with the separator for continuous production.
Drawings
Features, advantages, and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of an apparatus for interface measurement according to some embodiments of the present application;
FIG. 2 is a schematic diagram of an apparatus for interface measurement according to other embodiments of the present application.
FIG. 3 is a flow chart of an interface measurement method according to some embodiments of the present application;
FIG. 4 is a flow chart of a portion of an interface measurement method according to some embodiments of the present application.
The figures are not necessarily to scale.
Reference numerals illustrate:
100. a device;
10. a liquid storage tank; 11. a first liquid discharge port; 12. a second liquid outlet;
20. a first meter;
30. a second meter;
40. a separator;
50. a filter;
60. a liquid flow line.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
The term "and/or" in the present application is merely an association relation describing the association object, and indicates that three kinds of relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In the present application, the character "/" generally indicates that the front and rear related objects are an or relationship.
In the embodiments of the present application, the same reference numerals denote the same components, and detailed descriptions of the same components are omitted in different embodiments for the sake of brevity. It should be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length, width, etc. dimensions of the integrated device, are merely illustrative and should not be construed as limiting the application in any way.
The term "plurality" as used herein refers to two or more (including two).
Currently, with the increasing environmental and renewable requirements, there is an increasing interest in batteries and combinations thereof in the energy field. Among them, common batteries may include cadmium nickel batteries, hydrogen nickel batteries, lithium ion batteries, secondary alkaline zinc manganese batteries, and the like. Although the variety of batteries is large, the demand for batteries in the market is still large due to the production efficiency. Therefore, improvement of the production process of the battery is needed to improve the production efficiency of the battery. In the production process of the battery, a large amount of lithium salt is required to be used, wherein the lithium salt comprises lithium hexafluorophosphate, lithium fluoro-disulfonamide and the like, and has great influence on the internal resistance, electrochemical impedance, low-temperature performance, rate performance and the like of the battery. In the preparation process of lithium salt, the flow rate of liquid needs to be strictly controlled so as to realize the production continuity, wherein an important link in the preparation process of lithium salt is to laminate the mixed liquid into an upper liquid layer and a lower liquid layer so as to control the flow rate of each liquid layer.
The inventor tries to measure the interface by adopting a radar interface meter and a magnetostriction liquid level meter, but only the depth of a liquid layer with high dielectric constant can be measured by adopting a capacitance liquid level meter, and the interface position can not be detected. Therefore, the boundary position can be judged by manual calculation according to the production condition, and the observation is carried out on site through the sight glass, so that time and labor are wasted, the production continuity is affected, and production accidents are easily caused.
In view of the above problems, the inventors have made intensive studies to propose a method of
A device for border position measurement measures the liquid level of the liquid in the holding chamber in the liquid storage pot through designing first detector, measures the degree of depth of one of first liquid layer and second liquid layer that forms after the liquid layering through designing the second detector, obtains the border position between first liquid layer and the second liquid layer through the calculation of liquid level and degree of depth to with the measurement of border position conversion liquid level and degree of depth's measurement, solved the unable measuring problem of border position.
FIG. 1 is a schematic diagram of an apparatus for interface measurement according to some embodiments of the present application.
As shown in FIG. 1, an apparatus 100 for interfacial position measurement of the present application includes a fluid reservoir 10, a first meter 20, and a second meter 30. The liquid storage tank 10 has a housing chamber for containing liquid such that the liquid is layered in the housing chamber and forms a first liquid layer and a second liquid layer disposed one above the other. The first detector 20 is disposed in the liquid storage tank 10, and is used for detecting the liquid level of the liquid in the accommodating cavity. The second detector 30 is provided in the liquid storage tank 10 and detects the depth of one of the first liquid layer and the second liquid layer.
The liquid storage tank 10 is provided with a containing cavity, liquid is contained in the containing cavity, the liquid storage tank 10 is used for temporarily storing the liquid, and the liquid is stably layered in the containing cavity to form a first liquid layer and a second liquid layer which are arranged up and down. The first liquid layer and the second liquid layer may be layered due to a difference in density between the first liquid layer and the second liquid layer, or may be layered due to a difference in polarity between the first liquid layer and the second liquid layer.
The liquid storage tank 10 may have various shapes, such as a horizontal tank, a cone tank, a spherical tank, a cylindrical tank, etc., and may have other irregular shapes, and the shape of the liquid storage tank 10 should not affect the liquid contained therein, and the present application is not limited to the specific shape of the liquid storage tank 10. The liquid storage tank 10 may be made of various materials, such as stainless steel, aluminum alloy, ceramics, rubber or other composite materials.
The first liquid layer is typically of a higher density than the second liquid layer, the first liquid layer being located below the second liquid layer based on gravity. Alternatively, the density of the first liquid layer is less than the density of the second liquid layer, which is located below the first liquid layer based on gravity. Alternatively, the first liquid layer may be of a different polarity than the second liquid layer, and the first liquid layer may be layered with the second liquid layer according to similar compatible principles.
The first detector 20 is used for detecting the liquid level of the liquid in the accommodating cavity, that is, the total height of the first liquid layer and the second liquid layer, which are arranged up and down. As the liquid is continuously injected into the accommodating cavity, the total height of the liquid is changed in real time, and the real-time liquid level measurement of the liquid is realized through the first detection. In addition, the liquid storage tank 10 may be provided with a transparent structure through which the liquid level in the accommodating chamber is directly measured, or a scale mark is provided on the transparent structure, and the liquid level in the accommodating chamber is directly read through the scale mark.
Optionally, the first detector 20 measures the liquid level of the liquid in the accommodating cavity by using a magnetic levitation type liquid level meter, a pressure type liquid level meter, an ultrasonic liquid level meter, a sonar liquid level meter, a magnetic flap liquid level meter, a radar liquid level meter, a capacitance type liquid level meter and the like.
The second detector 30 is for detecting the depth of one of the first liquid layer and the second liquid layer. Along with the continuous injection of liquid into the holding intracavity, the continuous layering of liquid forms first liquid layer and the second liquid layer that sets up from top to bottom, and second detector 30 is used for measuring the degree of depth of first liquid layer or second liquid layer in real time. The second meter 30 needs to measure one of the first liquid layer and the second liquid layer, not the other, or the measured value is ignored, so that the accuracy of the depth measurement is ensured.
Alternatively, the second gauge 30 measures the depth of the liquid layer using a photorefractive liquid level sensor, a magnetostrictive or capacitive liquid level gauge, or the like.
In the embodiment of the present application, the first gauge 20 and the second gauge 30 are provided on the liquid tank 10, and may be provided inside the liquid to perform contact measurement with the liquid or may be provided outside the liquid to perform non-contact measurement with the liquid.
The level of the liquid in the device 100 of the present application is expressed as the height of the liquid in the direction of gravity, i.e. the liquid height. The depth of the first liquid layer or the second liquid layer is expressed as the thickness of the first liquid layer or the second liquid layer in the direction of gravity. The interface is expressed as the height at which the first liquid layer and the second liquid layer delaminate along the direction of gravity.
According to the device 100 disclosed by the application, the liquid level of the liquid in the accommodating cavity of the liquid storage tank 10 is measured by designing the first detector 20, the depth of one of the first liquid layer and the second liquid layer formed after layering of the liquid is measured by designing the second detector 30, and the interface between the first liquid layer and the second liquid layer is obtained by calculating the liquid level and the depth, so that the measurement of the interface is converted into the measurement of the liquid level and the depth, and the problem that the interface cannot be measured is solved. The device 100 of the application realizes the measurement of the interface position by only two detectors, and has simple structure and high measurement accuracy. Moreover, the first detector 20 and the second detector 30 can realize timely detection, which is beneficial to timely adjusting the flow rate of liquid, ensures the continuity of production and improves the production efficiency.
According to one embodiment of the application, the density of the first liquid layer is less than the density of the second liquid layer, and the first detector 20 is arranged to be higher than the liquid level of the first liquid layer.
In the embodiment of the present application, the density of the first liquid layer is smaller than that of the second liquid layer, the first liquid layer is disposed at an upper layer, the second liquid layer is disposed at a lower layer, the first detector 20 is disposed at an upper portion of the liquid surface of the first liquid layer, and the first detector 20 is disposed in a non-contact manner with the liquid.
In an embodiment of the present application, the second gauge 30 may be disposed at the same location as the first gauge 20, i.e., the second gauge 30 is above the liquid level of the first liquid layer, where the second gauge 30 measures the depth of the first liquid layer. Alternatively, the second gauge 30 is disposed within the first liquid layer, at which time the depth of the first liquid layer is measured. Alternatively, the second gauge 30 is disposed within the second liquid layer, at which time the depth of the second liquid layer is measured.
In these alternative embodiments, the first level gauge is higher than the level of the first liquid layer, and does not need to contact the liquid in the accommodating cavity, and the level of the liquid can be measured quickly and accurately without being influenced by pressure and gas of temperature.
According to one embodiment of the application, the difference in density between the first liquid layer and the second liquid layer is less than 0.1g/cm 3 The first gauge 20 comprises a radar level gauge.
In embodiments of the application, the first liquid layer and the second liquid layer are mutually incompatible, and the difference in density between the first liquid layer and the second liquid layer is less than 0.1g/cm 3 Because the density difference of the two mediums is small, the conventional liquid level detector or interface level detector cannot realize interface level measurement or cannot realize accurate measurement.
In an embodiment of the application, the first gauge 20 comprises a radar level gauge. The principle of radar level gauges is the time-travel method, which uses the reflection of microwave energy on the surface of a liquid to be measured and measures the travel time from the transmission to the reception of the reflected echo, in order to measure the distance of the liquid surface. In the liquid storage tank 10, a radar level gauge is arranged at the top of the liquid storage tank 10, and the liquid level is obtained by subtracting the height of air from the total height of the liquid storage tank 10.
Illustratively, the radar level gauge is provided with a mounting flange, the reservoir 10 is provided with an opening, and the opening is provided with a flange structure cooperating with the mounting flange. A sealing ring is arranged between the fixing flange and the liquid storage tank 10, and the fixing flange is fixed on the liquid storage tank 10 through the sealing ring so as to ensure that the radar liquid level gauge is arranged on the liquid storage tank 10 without leakage and other problems.
In these alternative embodiments, the radar level gauge is designed, and is mounted on the upper portion of the liquid storage tank 10 and higher than the first liquid layer, so that the radar level gauge is convenient to mount, can be selectively measured in contact with or non-contact with liquid, and emits electromagnetic waves which are not affected by external conditions such as environment, and has the advantages of high accuracy, large measurement range, simple mounting, wide application and the like.
According to one embodiment of the application, the density of the first liquid layer is smaller than the density of the second liquid layer, and the second detector 30 is arranged to be higher than the liquid level of the first liquid layer and to detect the depth of the first liquid layer.
In these alternative embodiments, the second detector 30 is configured to detect the depth of the first liquid layer disposed on the upper layer, and the first detector 20 is configured to detect the liquid level of the liquid, where the difference between the liquid level and the depth is obtained, so that the boundary between the first liquid layer and the second liquid layer is obtained, the depth of the second liquid layer is measured without penetrating the first liquid layer, so that the first liquid layer and the second liquid layer are prevented from affecting each other, and the measurement method is simple and accurate.
According to one embodiment of the application, the difference in dielectric constant of the first liquid layer and the second liquid layer is greater than 10 and the dielectric constant of the second liquid layer is less than 10, the second detector 30 comprising a capacitive liquid level meter.
In an embodiment of the application, the first liquid layer has a density less than the second liquid layer and the difference in density between the first and second liquid layers is less than 0.1g/cm 3 And dielectric constant of the first liquid layerThe number is greater than the dielectric constant of the second liquid layer, the difference in dielectric constant is greater than 10, and the dielectric constant of the second liquid layer is less than 10. Thus, by designing the first meter 20 and the second meter 30, the interface measurement of the first liquid layer and the second liquid layer having these characteristics is achieved.
Optionally, the first liquid layer is a hydrophilic liquid. The second liquid layer is a hydrophobic liquid.
Illustratively, the first liquid layer is water and the second liquid layer is dichlorobutane.
Illustratively, the first liquid layer is an unsaturated sodium chloride solution and the second liquid layer is methylene chloride.
In the embodiment of the application, the main principle of the capacitance type liquid level meter is a capacitance method, the capacitance type liquid level meter is installed on the liquid storage tank 10 in an insulating way, a metal probe and the liquid storage tank 10 are arranged on the wall of a containing cavity to form a capacitor, the capacitance of the capacitor depends on the amount of materials between the probe and the wall of the containing cavity, and if the containing cavity is free of liquid, a medium between electrodes is air (relative dielectric constant=1), and the capacitance is small. When the liquid increases, the relative dielectric constant of the liquid is larger than 1, so that the capacitance increases in proportion to the depth of the liquid, and the increase of the capacitance is detected by the electronic component, so that the depth of the liquid can be measured.
In the embodiment of the application, the larger the dielectric constant is, the better the reflection effect of the echo signal of the radar level gauge is, so that the radar level gauge is suitable for the liquid with the larger dielectric constant of the first liquid layer.
In these alternative embodiments, the capacitive gauge is designed to accommodate the measurement of liquids where the difference in density between the first and second liquid layers is small and the difference in dielectric constant between the first and second liquid layers is large. The capacitance type liquid level meter can measure at high temperature, high pressure and corrosion conditions, and is also suitable for measuring various liquids, oils and the like so as to ensure accurate measurement of the liquid in the liquid storage tank 10. In addition, the depth of the first liquid layer can be measured by the capacitance type liquid, and the capacitance generated by the second liquid layer is negligible because the dielectric constant of the second liquid layer is far smaller than that of the first liquid layer.
According to one embodiment of the present application, the fluid reservoir 10 further comprises:
the first liquid drain 11 is communicated with the liquid storage tank 10 and is used for draining the first liquid layer from the liquid storage tank 10.
In these alternative embodiments, the first liquid layer is drained from the liquid reservoir 10 through the first liquid drain 11 by determining the interface between the first liquid layer and the second liquid layer, and into the next production run. The flow rate of the first liquid layer is regulated by controlling the discharge liquid storage tank 10 and the first liquid discharge port 11 to realize continuous and controllable production and effectively prevent the second liquid layer from flowing out of the first liquid discharge port 11.
Optionally, the density of the first liquid layer is smaller than that of the second liquid layer, the first liquid outlet 11 is arranged on the upper side wall of the liquid storage tank 10 and is lower than the liquid level of the second liquid layer, and the first liquid outlet 11 is communicated with the accommodating cavity. So that the first liquid layer exits the liquid reservoir 10.
According to one embodiment of the present application, the fluid reservoir 10 further comprises:
and the second liquid outlet 12 is communicated with the liquid storage tank 10 and is used for discharging the second liquid layer from the liquid storage tank 10.
In these alternative embodiments, the second liquid layer is drained from the liquid reservoir 10 through the second liquid drain 12 by determining the interface between the first liquid layer and the second liquid layer, and into the next production run. The flow rate of the second liquid layer is regulated by controlling the discharge of the liquid storage tank 10 and the second liquid discharge port 12 to achieve continuous and controllable production and to effectively prevent the first liquid layer from flowing out of the second liquid discharge port 12.
Optionally, the density of the first liquid layer is smaller than that of the second liquid layer, and the second liquid outlet 12 is arranged at the bottom of the liquid storage tank 10, and the second liquid outlet 12 is communicated with the accommodating cavity. So that the second liquid layer drains from the liquid reservoir 10 based on gravity.
FIG. 2 is a schematic diagram of an apparatus for interface measurement according to other embodiments of the present application.
According to one embodiment of the application, as shown in fig. 2, the receiving chamber is provided with a port communicating with the receiving chamber, and the device 100 further comprises:
the separator 40 is connected to the liquid storage tank 10, and is configured to separate the liquid to form a first liquid layer and a second liquid layer, and convey the first liquid layer and the second liquid layer into the accommodating cavity through the ports.
In the embodiment of the application, the density of the first liquid layer is smaller than that of the second liquid layer, and the density difference between the first liquid layer and the second liquid layer is smaller than 0.1g/cm 3 The difference between the two is small. Particularly in the lithium salt preparation process, water is always accompanied with liquid formed by organic solvent and water, and when layering is carried out on the liquid storage tank 10, since the liquid storage tank 10 is only a simple container, the liquid can be naturally layered on the liquid storage tank 10 according to the density difference of each component, but the separation method is rough and the separation is incomplete, so that the subsequent production yield is affected. Thus, the separation process is performed in the separator 40 before the liquid flows into the liquid storage tank 10 to form a first liquid layer and a second liquid layer.
Optionally, the separator 40 comprises one of a gravity separator 40, a filter separator 40, a centrifugal separator 40, a demulsification separator 40.
In these alternative embodiments, the separator 40 separates the liquid to form the first liquid layer and the second liquid layer, so that the first liquid layer and the second liquid layer are directly layered in the accommodating cavity of the liquid storage tank 10, thereby saving standing layering time and improving production efficiency. In addition, the separator 40 may remove a part of impurities or particles, etc., to purify the first liquid layer and the second liquid layer.
According to one embodiment of the application, the separator 40 comprises a demulsifier separator 40.
In these alternative embodiments, one of the first and second liquid layers is collected in the emulsion breaking separator 40 by coalescence and emulsion breaking action and is layered by means of the density differential of the two phases, thereby achieving a rapid separation of the first and second liquid layers.
According to one embodiment of the application, the apparatus 100 further comprises:
a filter 50, connected to the separator 40, for filtering the liquid.
In these alternative embodiments, the liquid is filtered through the filter 50 to remove particulates, impurities, etc. before being separated in the separator 40, thereby purifying the liquid and also effectively preventing the liquid with particulates or impurities from clogging the separator 40 and the tank 10.
According to one embodiment of the application, the apparatus 100 further comprises:
a liquid circulation line 60 connecting the circulation port of the separator 40 and the circulation port of the filter 50 and serving as a passage for liquid circulation between the separator 40 and the filter 50.
In these alternative embodiments, a fluid flow line 60 is provided between the separator 40 and the filter 50 to connect the two, so that fluid filtered by the filter 50 enters the separator 40 through the fluid flow line 60, which may be routed according to field requirements for ease of assembly and transportation.
According to one embodiment of the application, the apparatus 100 further comprises a controller.
The controller has a function of receiving data and/or transmitting data, which can be used to control the liquid storage tank 10, the first meter 20, the second meter 30, the separator 40, and the filter 50.
In the embodiment of the present application, the controller may receive the signals of the first detector 20 and the second detector 30, respectively, then transmit and/or calculate the received signals, generate an execution signal according to the result obtained by calculation, and then send the execution signal to the regulating valve at the front end of the filter 50, so as to perform the feed flow rate regulation control of the device and the discharge regulation control of the first liquid discharge port 11 and the second liquid discharge port 12 of the liquid storage tank 10.
Illustratively, the control mechanism sends a signal to a front end feed control device of the filter 50 to control the amount of feed, and the filter 50 communicates with the separator 40 via a liquid flow line 60 to deliver liquid to the separator 40. Such that the liquid separates to form a first liquid layer and a second liquid layer, and the separator 40 communicates with the liquid reservoir 10, delivering the first liquid layer and the second liquid layer into the liquid reservoir 10. The controller controls the first detector 20 and the second detector 30 to measure, respectively receives signals of the first detector 20 and the second detector 30, then transmits and/or calculates the received signals, obtains the interface between the first liquid layer and the second liquid layer through the result obtained by calculation, and regenerates the execution signals to the regulating devices at the rear ends of the first liquid outlet 11 and the second liquid outlet 12 of the liquid storage tank 10 so as to control the first liquid layer and the second liquid layer to be discharged out of the liquid storage tank 10.
FIG. 3 is a flow chart of an interface measurement method according to some embodiments of the present application.
As shown in fig. 3, the present application further provides an interface measurement method, which includes the following steps:
s10, providing a liquid storage tank 10, wherein the liquid storage tank 10 is provided with a containing cavity;
s20, providing a first detector 20;
s30, providing a second detector 30;
s40, injecting liquid into the accommodating cavity so that the liquid is layered in the accommodating cavity and a first liquid layer and a second liquid layer which are arranged up and down are formed;
s50, detecting the liquid level of the liquid in the accommodating cavity by adopting a first detector 20;
and S60, detecting the depth of one of the first liquid layer and the second liquid layer by adopting the second detector 30.
According to the interface measuring method, the first detector 20 is used for measuring the liquid level of the liquid in the accommodating cavity of the liquid storage tank 10, the second detector 30 is used for measuring the depth of one of the first liquid layer and the second liquid layer formed after the liquid is layered, the difference value is calculated between the liquid level and the depth, and the interface between the first liquid layer and the second liquid layer is obtained, so that the measurement of the interface is converted into the measurement of the liquid level and the depth.
According to one embodiment of the application, before injecting the liquid into the containing cavity, it further comprises:
the liquids are separated in filter 50 to form a first liquid layer and a second liquid layer.
In these alternative embodiments, the liquid is pretreated, so that the first liquid layer and the second liquid layer which are layered are formed before the liquid flows into the accommodating cavity, the standing layering time in the accommodating cavity in the liquid storage tank 10 is saved, and the production efficiency is improved.
According to one embodiment of the application, the means of separation includes demulsification.
In these alternative embodiments, the first liquid layer and the second liquid layer are separated quickly according to the polarity difference of the first liquid layer and the second liquid layer.
The demulsification in the application is also called demulsification, which is a process of forming large liquid drops after the dispersed phase small liquid drops of the emulsion are aggregated into clusters, and finally separating out oil-water two phases in a layering way.
According to one embodiment of the application, before separating the liquid in the filter 50, it further comprises:
the liquid is filtered in a filter 50.
In these alternative embodiments, the liquid is filtered to remove impurities and purify the liquid before it is separated in the filter 50.
According to one embodiment of the present application, after filtering the liquid in the filter 50, further comprising:
the filtered liquid is delivered into the filter 50 through a liquid flow line 60.
In these alternative embodiments, the liquid filtered by the filter 50 enters the separator 40 through the liquid flow line 60, and the filter 50 is connected in series with the separator 40 for continuous production.
FIG. 4 is a flow chart of a portion of an interface measurement method according to some embodiments of the present application.
In the embodiment of the present application, as shown in fig. 4, S40 includes:
s41, filtering the liquid in a filter 50;
s42, conveying the filtered liquid into the separator 40 through the liquid circulation pipeline 60;
s43, separating the liquid in the separator 40 to form a first liquid layer and a second liquid layer;
and S44, injecting the first liquid layer and the second liquid layer into the accommodating cavity so as to form the first liquid layer and the second liquid layer which are arranged up and down in the accommodating cavity in a layering mode.
According to some embodiments of the applicationReferring to fig. 1 and 2, the present application provides an apparatus 100 for interfacial level measurement comprising a fluid reservoir 10, a first meter 20, a second meter 30, a separator 40, a filter 50, and a fluid flow line 60. The liquid storage tank 10 has a receiving cavity for receiving liquid so that the liquid is layered in the receiving cavity and forms a first liquid layer and a second liquid layer arranged up and down, wherein the density of the first liquid layer is smaller than that of the second liquid layer, and the difference between the densities of the first liquid layer and the second liquid layer is smaller than 0.1g/cm 3 The difference between the dielectric constants of the first liquid layer and the second liquid layer is greater than 10, and the dielectric constant of the second liquid layer is less than 10. The first detector 20 is a radar level gauge, the second detector 30 is a capacitive level gauge, and the radar level gauge and the capacitive level gauge are arranged in the liquid storage tank 10 and are higher than the liquid level of the first liquid layer. The separator 40 is connected to the reservoir 10. The filter 50 is connected to the separator 40 by a liquid flow line 60. The specific device 100 operational flow includes: filtering the liquid in a filter 50; delivering the filtered liquid into the filter 50 through the liquid flow line 60; separating the liquid in filter 50 to form a first liquid layer and a second liquid layer; injecting the first liquid layer and the second liquid layer into the accommodating cavity to form a first liquid layer and a second liquid layer which are arranged up and down in the accommodating cavity in a layering manner; detecting the liquid level of the liquid in the accommodating cavity by adopting a first detector 20; the depth of one of the first liquid layer and the second liquid layer is detected using the second detector 30. And obtaining the interface position of the first liquid layer and the second liquid layer by calculating the difference value of the liquid level and the depth. According to the device 100 disclosed by the application, the liquid level of the liquid in the accommodating cavity of the liquid storage tank 10 is measured by designing the first detector 20, the depth of one of the first liquid layer and the second liquid layer formed after layering of the liquid is measured by designing the second detector 30, and the interface position between the first liquid layer and the second liquid layer, namely the interface height, is obtained by calculating the liquid level and the depth, so that the measurement of the interface position is converted into the measurement of the liquid level and the depth, and the problem that the interface position cannot be measured is solved.
While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application, and in particular, the technical features set forth in the various embodiments may be combined in any manner so long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (16)
1. An apparatus for interface measurement, comprising:
the liquid storage tank is provided with a containing cavity, and the containing cavity is used for containing liquid so that the liquid is layered in the containing cavity and forms a first liquid layer and a second liquid layer which are arranged up and down;
the first detector is arranged on the liquid storage tank and is used for detecting the liquid level of the liquid in the accommodating cavity;
the second detector is arranged in the liquid storage tank and is used for detecting the depth of one of the first liquid layer and the second liquid layer.
2. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
the first liquid layer has a density smaller than that of the second liquid layer, and the first detector is disposed higher than the liquid level of the first liquid layer.
3. The apparatus of claim 2, wherein the device comprises a plurality of sensors,
the difference in density between the first liquid layer and the second liquid layer is less than 0.1g/cm 3 The first gauge comprises a radar level gauge.
4. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
the density of the first liquid layer is smaller than that of the second liquid layer, and the second detector is arranged to be higher than the liquid level of the first liquid layer and used for detecting the depth of the first liquid layer.
5. The apparatus of claim 4, wherein the device comprises a plurality of sensors,
the difference between the dielectric constants of the first and second liquid layers is greater than 10, and the dielectric constant of the second liquid layer is less than 10, and the second detector comprises a capacitive liquid level meter.
6. The apparatus of claim 1, wherein the reservoir further comprises:
the first liquid outlet is communicated with the accommodating cavity and used for discharging the first liquid layer from the liquid storage tank.
7. The apparatus of claim 1, wherein the reservoir further comprises:
the second liquid outlet is communicated with the accommodating cavity and used for discharging the second liquid layer from the liquid storage tank.
8. The device of claim 1, wherein the receiving chamber is provided with a port in communication with the receiving chamber, the device further comprising:
and the separator is connected with the liquid storage tank and is used for separating liquid to form a first liquid layer and a second liquid layer and conveying the first liquid layer and the second liquid layer into the accommodating cavity through the port.
9. The apparatus of claim 8, wherein the device comprises a plurality of sensors,
the separator comprises a demulsification separator.
10. The apparatus of claim 8, wherein the apparatus further comprises:
and the filter is connected with the separator and is used for filtering liquid.
11. The apparatus of claim 10, wherein the apparatus further comprises:
and a liquid circulation pipeline which is connected with the circulation port of the separator and the circulation port of the filter and is used as a passage for liquid circulation between the separator and the filter.
12. An interface measurement method, comprising the steps of:
providing a liquid storage tank, wherein the liquid storage tank is provided with a containing cavity;
providing a first meter;
providing a second meter;
injecting liquid into the accommodating cavity so that the liquid is layered in the accommodating cavity and a first liquid layer and a second liquid layer which are arranged up and down are formed;
detecting the liquid level of the liquid in the accommodating cavity by adopting a first detector;
the depth of one of the first liquid layer and the second liquid layer is detected with a second detector.
13. The interface measurement method of claim 12, wherein prior to injecting the liquid into the receiving cavity, further comprising:
the liquid is separated in the filter to form a first liquid layer and a second liquid layer.
14. The interface measurement method of claim 13, wherein,
the separation mode comprises demulsification.
15. The interface measurement method of claim 13, wherein the separating the liquid in the filter is preceded by:
the liquid is filtered in a filter.
16. The interface measurement method of claim 15, wherein after filtering the liquid in the filter, further comprising:
and conveying the filtered liquid into the filter through a liquid circulation pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210633186.9A CN117232612A (en) | 2022-06-07 | 2022-06-07 | Device for measuring boundary position and boundary position measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210633186.9A CN117232612A (en) | 2022-06-07 | 2022-06-07 | Device for measuring boundary position and boundary position measuring method |
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| Publication Number | Publication Date |
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| CN117232612A true CN117232612A (en) | 2023-12-15 |
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| CN202210633186.9A Pending CN117232612A (en) | 2022-06-07 | 2022-06-07 | Device for measuring boundary position and boundary position measuring method |
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| Country | Link |
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| CN (1) | CN117232612A (en) |
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- 2022-06-07 CN CN202210633186.9A patent/CN117232612A/en active Pending
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