Method, device, assembly and system for measuring liquid density

Abstract

The invention discloses a method, a device, an assembly and a system for measuring liquid density. The method is realized by adopting the assembly for measuring the liquid density. The liquid density measuring assembly comprises a tank body, an N2 liquid level meter and a liquid level height detector; the N2 liquid level meter is used for detecting the liquid level detection pressure of to-be-detected liquid in the tank body, and the liquid level height detector is used for detecting the liquid level detection height of the to-be-detected liquid; the liquid density measuring method comprises the following steps: acquiring the liquid level detection height of to-be-measured liquid; determining the real height of the liquid level of the to-be-detected liquid according to the liquid level detection height; obtaining the liquid level detection pressure of the to-be-detected liquid; determining the liquid level simulation height of the to-be-detected liquid according to the liquid level detection pressure; and determining the liquid density of the to-be-measured liquid according to the liquid level simulation height and the liquid level real height. The density of the mixed liquid can be rapidly measured, the structure is simple, and no pollutant is generated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid density measurement, in particular to a liquid density measurement method, device, assembly and system. BACKGROUND

[0002] For the on-site device using mixed chemical solution, with the increase of time, some chemicals gradually volatilize (hydrogen peroxide, water, etc.), so that the concentration of the chemical solution changes. At this time, chemicals or water need to be added to adjust the proportion of the chemical solution.

[0003] When the mixed chemical solution is recycled, the recycling barrels cannot determine whether they are full by weighing due to different densities. Therefore, the density of the mixed chemical solution during recycling needs to be measured to adjust the full barrel value.

[0004] How to quickly measure the density of the mixed liquid is a technical problem that needs to be solved by those skilled in the art. SUMMARY

[0005] The present application provides a liquid density measurement method, device, assembly and system, which can quickly measure the density of the mixed liquid, has a simple structure and does not produce pollutants.

[0006] In a first aspect, the present application provides a liquid density measurement method, which is implemented by using a liquid density measurement assembly; the liquid density measurement assembly comprises a tank, an N2 liquid level meter and a liquid level height detector;

[0007] The N2 liquid level meter is used to detect the liquid level detection pressure of the liquid to be measured in the tank, and the liquid level height detector is used to detect the liquid level detection height of the liquid to be measured.

[0008] The liquid density measurement method comprises:

[0009] obtaining the liquid level detection height of the liquid to be measured;

[0010] determining the real liquid level height of the liquid to be measured according to the liquid level detection height;

[0011] obtaining the liquid level detection pressure of the liquid to be measured;

[0012] determining the simulated liquid level height of the liquid to be measured according to the liquid level detection pressure;

[0013] determining the liquid density of the liquid to be measured according to the simulated liquid level height and the real liquid level height.

[0014] Optionally, the liquid level height detector is a magnetostrictive detector.

[0015] The obtaining of the liquid level detection height of the liquid to be measured comprises:

[0016] obtaining a height value of a float ball of the magnetostriction instrument;

[0017] determining the height value of the float ball as a liquid level detection height of the liquid to be measured.

[0018] Optionally, determining the real liquid level height of the liquid to be measured according to the liquid level detection height comprises:

[0019] determining the real liquid level height of the liquid to be measured according to the following formula:

[0020] Y1=k1x1;

[0021] wherein Y1 is the real liquid level height of the liquid to be measured, k1 is a first coefficient, and x1 is the liquid level detection height.

[0022] Optionally, determining the simulated liquid level height of the liquid to be measured according to the liquid level detection pressure comprises:

[0023] determining the simulated liquid level height of the liquid to be measured according to the following formula:

[0024] Y2=k2x2;

[0025] wherein Y2 is the simulated liquid level height of the liquid to be measured, k2 is a second coefficient, and x2 is the liquid level detection pressure.

[0026] Optionally, determining the liquid density of the liquid to be measured according to the simulated liquid level height and the real liquid level height comprises:

[0027] determining the liquid density of the liquid to be measured according to the following formula:

[0028] P=Y2 / Y1+b; wherein P is the liquid density of the liquid to be measured, Y2 is the simulated liquid level height of the liquid to be measured, Y1 is the real liquid level height of the liquid to be measured, and b is a correction value.

[0029] In a second aspect, an embodiment of the present application further provides a liquid density measuring device, comprising:

[0030] a liquid level detection height obtaining module, configured to obtain a liquid level detection height of a liquid to be measured;

[0031] a real liquid level height determining module, configured to determine a real liquid level height of the liquid to be measured according to the liquid level detection height;

[0032] a liquid level detection pressure obtaining module, configured to obtain a liquid level detection pressure of the liquid to be measured;

[0033] a simulated liquid level height determining module, configured to determine a simulated liquid level height of the liquid to be measured according to the liquid level detection pressure;

[0034] a liquid density determination module configured to determine the liquid density of the liquid to be measured according to the liquid level simulation height and the liquid level real height.

[0035] Optionally, the liquid level detection height acquisition module comprises:

[0036] a float ball height acquisition unit configured to acquire a height value of a float ball of the magnetostriction instrument;

[0037] a liquid level detection height determination unit configured to determine the height value of the float ball as the liquid level detection height of the liquid to be measured.

[0038] In a third aspect, an embodiment of the present application further provides a liquid density measurement assembly, comprising a tank body, an N2 liquid level meter, a liquid level height detector, and the liquid density measurement device of claim 7.

[0039] The N2 liquid level meter is configured to detect a liquid level detection pressure of the liquid to be measured in the tank body, and the liquid level height detector is configured to detect a liquid level detection height of the liquid to be measured.

[0040] Optionally, the liquid level height detector is a magnetostriction instrument.

[0041] In a fourth aspect, an embodiment of the present application further provides a liquid density measurement system, comprising the liquid density measurement assembly of the third aspect and a liquid to be measured.

[0042] The embodiment of the present application discloses a liquid density measurement method, device, assembly and system. The liquid level detection height of the liquid to be measured is acquired. The liquid level real height of the liquid to be measured is determined according to the liquid level detection height. The liquid level detection pressure of the liquid to be measured is acquired. The liquid level simulation height of the liquid to be measured is determined according to the liquid level detection pressure. The liquid density of the liquid to be measured is determined according to the liquid level simulation height and the liquid level real height. The density of the mixed liquid can be quickly measured, the structure is simple, and no pollutants are generated.

[0043] It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the present application or to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0045] Figure 1 is a structural schematic diagram of a liquid density measuring system provided by an embodiment of the present application;

[0046] Figure 2 is a flow chart of a liquid density measuring method provided by an embodiment of the present application;

[0047] Figure 3 is a structural schematic diagram of a liquid density measuring device provided by an embodiment of the present application;

[0048] Figure 4 is a structural schematic diagram of another liquid density measuring device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0049] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the embodiment of the present application will be described clearly and completely below in combination with the drawings in the embodiment of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0050] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0051] Figure 1 is a structural schematic diagram of a liquid density measuring system provided by an embodiment of the present application, Figure 2 is a flow chart of a liquid density measuring method provided by an embodiment of the present application, which can be applicable to the case of measuring liquid density. The method can be executed by a liquid density measuring device, which can be realized in the form of hardware and / or software. The method is realized by using a liquid density measuring component; the liquid density measuring component includes a tank 110, an N2 liquid level gauge 120, and a liquid level height detector 130. The N2 liquid level gauge 120 is used to detect the liquid level detection pressure of the liquid to be measured in the tank 110, and the liquid level height detector 130 is used to detect the liquid level detection height of the liquid to be measured.

[0052] It should be noted that the working principle of the N2 liquid level meter 120 is to insert a blowing pipe into the bottom of the container. At the top of the container, a very weak and stable flow of pure nitrogen is continuously introduced into the blowing pipe. When the flow of the blowing gas is stable, the pressure in the blowing pipe is basically equal to the static pressure in the container at the position of the pipe opening. The pressure in the blowing pipe is measured by a pressure transmitter (or a differential pressure transmitter), and the pressure is the static pressure generated by the liquid.

[0053] Reference Figure 2 The method for measuring the liquid density comprises the following steps:

[0054] S210, acquiring a liquid level detection height of the liquid to be measured.

[0055] S220, determining a liquid level true height of the liquid to be measured according to the liquid level detection height.

[0056] It can be understood that the liquid level height detector 130 is used to acquire the liquid level detection height of the liquid in the embodiment of the present application. The liquid level height detector 130 can be any instrument capable of detecting the actual liquid level in real time.

[0057] S230, acquiring a liquid level detection pressure of the liquid to be measured.

[0058] S240, determining a liquid level simulation height of the liquid to be measured according to the liquid level detection pressure.

[0059] It can be understood that the N2 liquid level meter 120 is used to introduce N2 gas into the liquid to be measured in the embodiment of the present application, and the liquid level simulation height of the liquid to be measured at present is read by reading the liquid level detection pressure, and then converted to the internal PLC through a 4-20ma signal.

[0060] S250, determining the liquid density of the liquid to be measured according to the liquid level simulation height and the liquid level true height.

[0061] Specifically, the liquid density of the liquid to be measured can be the ratio of the liquid level simulation height to the liquid level true height.

[0062] It can be understood that the reference pressure of the N2 liquid level meter 120 is obtained by taking water as the reference. When the liquid to be measured in the tank 110 is all water, the liquid level true height of the liquid to be measured obtained according to the measurement result of the liquid level height detector 130 is close to the value of the liquid level simulation height of the liquid to be measured obtained according to the measurement result of the N2 liquid level meter 120, and the ratio obtained is close to 1, that is, the liquid density is 1 g / cm 3Similarly, when the density of the liquid to be measured in the tank 110 is less than the density of water, the value of the simulated height of the liquid level of the liquid to be measured obtained according to the measurement result of the N2 liquid level gauge 120 is less than the real height of the liquid level of the liquid to be measured obtained according to the measurement result of the liquid level detector 130. When the density of the liquid to be measured in the tank 110 is greater than the density of water, the value of the simulated height of the liquid level of the liquid to be measured obtained according to the measurement result of the N2 liquid level gauge 120 is greater than the real height of the liquid level of the liquid to be measured obtained according to the measurement result of the liquid level detector 130.

[0063] The embodiment of the present application acquires the liquid level detection height of the liquid to be measured by the liquid level detector 130, determines the real height of the liquid level of the liquid to be measured according to the liquid level detection height, acquires the liquid level detection pressure of the liquid to be measured by the N2 liquid level gauge 120, determines the simulated height of the liquid level of the liquid to be measured according to the liquid level detection pressure, and determines the liquid density of the liquid to be measured according to the simulated height of the liquid level and the real height of the liquid level. The density of the mixed liquid can be quickly determined, the structure is simple, and no pollutants are generated.

[0064] Optionally, on the basis of the above embodiment, the liquid level detector 130 is a magnetostriction instrument; and the step S210 comprises: acquiring the height value of the float ball of the magnetostriction instrument; and determining the height value of the float ball as the liquid level detection height of the liquid to be measured.

[0065] It can be understood that the magnetostriction instrument arranged in the tank 110 determines the liquid level detection height of the liquid to be measured by reading the height value of the float ball, and converts the 4-20ma signal to the inside of the PLC.

[0066] Optionally, on the basis of the above embodiment, the step S220 comprises: determining the real height of the liquid level of the liquid to be measured by using the following formula: Y1=k1x1; wherein Y1 is the real height of the liquid level of the liquid to be measured, k1 is the first coefficient, and x1 is the liquid level detection height.

[0067] It can be understood that k1 is obtained by prior calibration through experiments, and the real height of the liquid level of the liquid to be measured can be obtained by substituting x1 into the formula.

[0068] Optionally, on the basis of the above embodiment, the step S240 comprises: determining the simulated height of the liquid level of the liquid to be measured by using the following formula: Y2=k2x2; wherein Y2 is the simulated height of the liquid level of the liquid to be measured, k2 is the second coefficient, and x2 is the liquid level detection pressure.

[0069] It can be understood that k2 is obtained by prior calibration through experiments, and the simulated height of the liquid level of the liquid to be measured can be obtained by substituting x2 into the formula.

[0070] Optionally, based on the above embodiment, the step S250 comprises: determining the liquid density of the liquid to be measured by using the following formula: P=Y2 / Y1+b; wherein, P is the liquid density of the liquid to be measured, Y2 is the liquid level simulation height of the liquid to be measured, Y1 is the liquid level real height of the liquid to be measured, and b is a correction value.

[0071] Wherein, b is obtained by experiment in advance, and Y1 and Y2 are substituted into the formula to obtain the liquid density of the liquid to be measured.

[0072] In summary, the embodiment of the present application obtains the liquid level detection height of the liquid to be measured by setting the liquid level height detector 130, determines the liquid level real height of the liquid to be measured according to the liquid level detection height, sets the N2 liquid level meter 120 to obtain the liquid level detection pressure of the liquid to be measured, determines the liquid level simulation height of the liquid to be measured according to the liquid level detection pressure, and determines the liquid density of the liquid to be measured according to the liquid level simulation height and the liquid level real height. The density of the mixed liquid can be quickly determined, the structure is simple, and no pollutants are generated.

[0073] Figure 3 is a structural schematic diagram of a liquid density measuring device provided by the embodiment of the present application, referring to Figure 3 The device comprises: a liquid level detection height obtaining module 310, configured to obtain the liquid level detection height of the liquid to be measured; a liquid level real height determining module 320, configured to determine the liquid level real height of the liquid to be measured according to the liquid level detection height; a liquid level detection pressure obtaining module 330, configured to obtain the liquid level detection pressure of the liquid to be measured; a liquid level simulation height determining module 340, configured to determine the liquid level simulation height of the liquid to be measured according to the liquid level detection pressure; and a liquid density determining module 350, configured to determine the liquid density of the liquid to be measured according to the liquid level simulation height and the liquid level real height.

[0074] Figure 4 is a structural schematic diagram of another liquid density measuring device provided by the embodiment of the present application, and optionally, based on the above embodiment, referring to Figure 4 The liquid level detection height obtaining module 310 comprises: a float ball height obtaining unit 311, configured to obtain the height value of the float ball of the magnetostrictive instrument; and a liquid level detection height determining unit 312, configured to determine the height value of the float ball as the liquid level detection height of the liquid to be measured.

[0075] The liquid density measuring device provided by the embodiment of the present application can execute the liquid density measuring method provided by any embodiment of the present application, has the function modules and beneficial effects corresponding to the execution method. The contents not described in detail in the embodiment of the present application can be referred to the liquid density measuring method provided by the above embodiment.

[0076] The embodiment of the present application further provides a liquid density measuring assembly, and continues to refer to Figure 1The assembly comprises a tank 110, an N2 liquid level gauge 120, a liquid level height detector 130 and the liquid density measuring device provided in the above embodiment; the N2 liquid level gauge 120 is used for detecting the liquid level detection pressure of the liquid to be measured in the tank 110, and the liquid level height detector 130 is used for detecting the liquid level detection height of the liquid to be measured.

[0077] Optionally, on the basis of the above embodiment, the liquid level height detector is a magnetostrictive detector.

[0078] The embodiment of the present application further provides a liquid density measuring system, comprising the liquid density measuring assembly provided in the above embodiment and the liquid to be measured.

[0079] It should be understood that the various forms of flow shown above can be used to reorder, add or delete steps. For example, the steps described in the present application can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions of the present application can be achieved, which are not limited herein.

[0080] The above detailed description does not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method of determining the density of a liquid, characterized in that, The liquid density measuring device comprises a tank, an N2 liquid level gauge and a liquid level height detector; The N2 liquid level gauge is used for detecting the liquid level detection pressure of the liquid to be measured in the tank, and the liquid level height detector is used for detecting the liquid level detection height of the liquid to be measured. The liquid density measuring method comprises the following steps: obtaining the liquid level detection height of the liquid to be measured; obtaining the liquid level detection height of the liquid to be measured; obtaining the liquid level detection pressure of the liquid to be measured; obtaining the liquid level detection pressure of the liquid to be measured; obtaining the liquid level detection pressure of the liquid to be measured; 2. The method of claim 1, wherein obtaining the liquid level detection pressure of the liquid to be measured. The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector.

3. The method of claim 2, wherein The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector.

4. The method of claim 1, wherein the density of the liquid is determined by the steps of: The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector.

5. The method of measuring the density of a liquid according to claim 1, wherein The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector.

6. A device for measuring the density of a liquid, characterized in that The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector.

7. The apparatus for determining the density of a liquid according to claim 6, wherein The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector. The liquid level height detector is a magnetostrictive detector.

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10. A liquid density determination system characterized by, Comprising: The assembly for determining the density of a liquid according to any one of claims 8-9 and the liquid to be measured.

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