Composite hydrometer capable of signal remote transmission

Abstract

The invention discloses a composite hydrometer capable of remotely transmitting signals, belongs to the technical field of solution density detection, and solves the problems that a traditional hydrometer needs manual reading and cannot automatically transmit data, and an electrode is easy to corrode and the precision needs to be frequently corrected in a conductivity measurement method. According to the technical scheme, a first floating unit and a second floating unit are sleeved in a sliding mode to form a combined body, and the ratios of the weights to the cross sectional areas are different; a sensing unit is arranged to detect the height difference or variable quantity of the two floating units caused by liquid density change, and converts the height difference or variable quantity into an electric signal or an optical signal; and the signal processing unit receives the signal and calculates the liquid density or the variable quantity according to the ratio, and the hydrometer realizes real-time remote transmission of measured data through a combination body with a specific shape and structure, and is suitable for various liquid density measurement scenes.

Description

Technical Field

[0001] This invention relates to the field of solution density detection technology, and in particular to a composite hydrometer capable of remote signal transmission. Background Technology

[0002] Currently, there are traditional methods for determining the salt content in water, namely specific gravity measurement and conductivity measurement. The latter method involves electrodes that are easily corroded by prolonged immersion in salt solutions, and the measurement accuracy also changes, requiring constant calibration, which is very troublesome. While the Baumé hydrometer is very practical, it is a single-buoy hydrometer that floats on the surface of the liquid, rising with the liquid level and falling with it. The hydrometer can only be read manually and cannot automatically identify the measured liquid specific gravity value and transmit it to the automatic control system through modern technology.

[0003] Therefore, we propose a composite hydrometer with remote signal transmission to solve the problems mentioned above. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of traditional hydrometers that require manual reading, cannot automatically transmit data, and whose electrodes are prone to corrosion and require frequent calibration in conductivity measurement methods. Therefore, this invention proposes a composite hydrometer with remote signal transmission.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A composite hydrometer with remote signal transmission capability, comprising:

[0007] A first floating unit, configured to float in the liquid to be tested;

[0008] A second floating unit, configured to float in the liquid to be tested;

[0009] The first floating unit is slidably sleeved on the second floating unit, so that the first floating unit and the second floating unit keep sliding;

[0010] The first floating unit has a first weight and a first cross-sectional area, the second floating unit has a second weight and a second cross-sectional area, and the first ratio (Ka) of the first weight to the first cross-sectional area is not equal to the second ratio (Kb) of the second weight to the second cross-sectional area.

[0011] The hydrometer also includes a sensing unit configured to detect the height difference or change in height difference between the first floating unit and the second floating unit in relation to liquid density.

[0012] When the liquid density changes, the immersion depth of the first floating unit and the second floating unit changes by different amounts, thereby generating a height difference between the first floating unit and the second floating unit that is related to the density change. The sensing unit is used to detect the height difference.

[0013] In one possible design, the first floating unit and the second floating unit are columnar structures with uniform cross-sections.

[0014] In one possible design, the columnar structure is a cylinder, cuboid, or prism.

[0015] In one possible design, the first ratio (Ka) is smaller than the second ratio (Kb).

[0016] In one possible design, the sensing unit is an optical sensor, a magnetostrictive displacement sensor, or a capacitive displacement sensor.

[0017] In one possible design, the sensing unit is configured to convert the detected height difference or change in height difference into an electrical or optical signal.

[0018] In one possible design, a signal processing unit is also included, which is communicatively connected to the sensing unit, for receiving the electrical signal or optical signal, and calculating the density or density change of the liquid to be tested based on the first ratio (Ka) and the second ratio (Kb).

[0019] In one possible design, a housing is also included, in which the first and second floating units are at least partially located, and the housing has channels for liquid to enter.

[0020] In this application, the hydrometer is placed in the liquid to be measured. Both the first and second floating units float on the surface of the liquid due to their inherent properties. Since the first floating unit has a first weight and a first cross-sectional area, and the second floating unit has a second weight and a second cross-sectional area, and the first ratio (Ka) of the first weight to the first cross-sectional area is not equal to the second ratio (Ka) of the second weight to the second cross-sectional area, when the liquid density changes, according to Archimedes' principle, the buoyant force on the first and second floating units equals their respective weights. The volume of liquid displaced by them will change accordingly. Furthermore, because their ratios are different, the change in immersion depth is also affected. The difference in height between the first and second floating units creates a height difference related to the density change. At this time, the sensing unit (which may be an optical sensor, a magnetostrictive displacement sensor, or a capacitive displacement sensor) detects the height difference or the change in height difference and converts it into an electrical signal or an optical signal. The signal processing unit receives these electrical signals or optical signals and calculates the density or density change of the liquid to be measured according to the first ratio (Ka) and the second ratio (Ka) through a preset calculation program, thus completing the measurement of the density of the liquid to be measured. The liquid can enter through the channel opened on the outer shell, so that the hydrometer can fully contact the liquid to be measured for measurement.

[0021] Beneficial effects:

[0022] 1. By combining two objects with different characteristics (different shapes and weights) that can always float on the surface of a liquid into a joint, the density of the liquid can be accurately calculated by utilizing the height difference caused by the different degrees of change in the floating height of the two objects when the liquid density changes. This improves the measurement accuracy compared to measuring a single floating object.

[0023] 2. When two objects are regular cylinders, cuboids, or prisms, regular height differences can be generated to calculate changes in liquid density, broadening the applicability of the measuring tool to objects of different shapes and making the measurement process more standardized and operable.

[0024] 3. Due to the height difference between the two parts of the joint structure, the data can be transmitted over a long distance to the host computer of the automatic control system via optical or electrical signals, realizing real-time and remote transmission of measurement data. This facilitates centralized monitoring and automated control of the measurement process, improving the efficiency and intelligence level of the measurement work.

[0025] 4. Based on Archimedes' principle and the condition of equilibrium when an object floats on a liquid surface, the method uses the relationship between the buoyant force on the object, the volume of displaced liquid, and the weight of the object to make measurements. The principle is simple and easy to understand, and it is applicable to various liquid density measurement scenarios, thus having wide versatility.

[0026] This invention solves the problems of traditional hydrometers requiring manual reading and unable to automatically transmit data, as well as the problems of electrodes being easily corroded and accuracy requiring frequent calibration in conductivity measurement methods. It can automatically identify the specific gravity value of liquids and transmit the data as electrical or optical signals through a sensing unit and a signal processing unit, providing accurate information for the automatic control system. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of the connection structure between the first and second floating units of a composite hydrometer capable of remote signal transmission proposed in this invention.

[0028] Figure 2 This is a three-dimensional schematic diagram comparing the structure of a composite hydrometer capable of remote signal transmission proposed in this invention. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] In one embodiment: Refer to Figure 1-2 A hydrometer comprises a first floating unit A, a second floating unit B, a sensing unit, a signal processing unit, and a housing.

[0031] like Figure 1 As shown, both the first floating unit A and the second floating unit B are cylindrical structures with uniform cross-sections, specifically cylinders, cuboids, or prisms. The first floating unit A is slidably fitted onto the second floating unit B, maintaining a sliding state to ensure relative free movement in the liquid. The first floating unit A has a first weight and a first cross-sectional area, while the second floating unit B has a second weight and a second cross-sectional area. The first ratio Ka of the first weight to the first cross-sectional area is less than the second ratio Kb of the second weight to the second cross-sectional area; this ratio difference is one of the key factors ensuring measurement accuracy.

[0032] like Figure 1As shown, the sensing unit is selected from one of the following: an optical sensor, a magnetostrictive displacement sensor, or a capacitive displacement sensor. The sensing unit is positioned appropriately to detect the height difference or change in height difference between the first floating unit A and the second floating unit B, which is related to the liquid density. When the hydrometer is placed in the liquid to be measured, the liquid enters through a channel in the outer casing, causing the first floating unit A and the second floating unit B to be at least partially submerged and floating on the liquid surface. Due to the difference in liquid density, the buoyancy experienced by the first floating unit A and the second floating unit B is different, and according to Archimedes' principle, the volume of liquid displaced by them will change accordingly. Since Ka is not equal to Kb, when the liquid density changes, the immersion depth of the first floating unit A and the second floating unit B changes differently, thus creating a height difference between them related to the density change. The sensing unit can accurately detect this height difference or change in height difference.

[0033] like Figure 1 As shown, the sensing unit converts the detected height difference or change in height difference into an electrical or optical signal. The signal processing unit is communicatively connected to the sensing unit and receives these electrical or optical signals. The signal processing unit has a pre-set program that calculates the density or change in density of the liquid to be measured based on Ka and Kb. Based on the received signal, it performs the calculation according to the pre-set program and finally obtains the density or change in density of the liquid to be measured.

[0034] This application can be used in the field of solution density detection technology, or in other fields applicable to this application.

[0035] In another embodiment: Reference Figure 1 Based on the above embodiments, an improvement is made: a composite hydrometer with remote signal transmission, applied to the field of solution density detection technology. The outer casing protects the internal components and regulates liquid entry. At least partially, the first floating unit A and the second floating unit B are located within the casing. Channels in the casing ensure smooth liquid entry and contact with the floating units, allowing the measurement process to proceed normally. The entire hydrometer has a reasonable structure, with all components working collaboratively. It can accurately measure liquid density and provide the results to relevant systems via remote signal transmission, demonstrating high feasibility and operability.

[0036] Calculation example: Figure 2 As shown, A and B are two objects that can float, specifically a first floating unit A and a second floating unit B. By sliding the first floating unit A onto the second floating unit B, they are combined into a single unit.

[0037] γ: Specific gravity of the liquid; Gobject: Weight of the floating object. Taking a cylinder as an example, Sa and Sb are the cross-sectional areas of object A and object B, respectively. ha and hb are the depths of objects a and B immersed in the liquid, respectively. Ha and Hb are the heights of objects A and B above the liquid surface, respectively. Liquid 1 and Liquid 2 are two liquids with different specific gravities. The object remains in a floating state.

[0038] F_buoyancy = G_object

[0039] F_buoyancy = V_displaced × γ

[0040] Gmaterial = Vdisplaced × γ0

[0041] V_displacement = G_material / γ

[0042] V_displaced = h × S

[0043] h×s=G_object / γ

[0044] h = Gmaterial / s. γ = (Gmaterial / s) × (1 / γ)

[0045] Both Gobject and s are constants. Therefore: Gobject / s = K (constant)

[0046] h=K×γ

[0047] When the specific gravity of the liquid changes, γ1 changes to γ2.

[0048]

[0049]

[0050]

[0051]

[0052]

[0053]

[0054]

[0055] Ka and Kb are both constants, and Ka - Kb = Kab is also a constant.

[0056] .

[0057] The conclusion is that, after revising the individual parameters, the displacement difference of the composite can be used to determine the change in liquid density.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A signal-remote composite hydrometer, characterized by, include: A first floating unit (A) is configured to float in the liquid to be tested; The second floating unit (B) is configured to float in the liquid to be tested; The first floating unit (A) is slidably sleeved on the second floating unit (B), so that the first floating unit (A) and the second floating unit (B) remain in a sliding position; The first floating unit (A) has a first weight and a first cross-sectional area, and the second floating unit (B) has a second weight and a second cross-sectional area, and the first ratio (Ka) of the first weight to the first cross-sectional area is not equal to the second ratio (Kb) of the second weight to the second cross-sectional area. The hydrometer also includes a sensing unit configured to detect the height difference or change in height difference between the first floating unit (A) and the second floating unit (B) in relation to liquid density; When the liquid density changes, the immersion depth of the first floating unit (A) and the second floating unit (B) changes by different amounts, thereby generating a height difference between the first floating unit (A) and the second floating unit (B) that is related to the density change. The sensing unit is used to detect the height difference.

2. The signal-transmittable combined hydrometer according to claim 1, wherein, The first floating unit (A) and the second floating unit (B) are columnar structures with uniform cross-sections.

3. The signal-transmittable combined hydrometer according to claim 2, characterized in that, The columnar structure is a cylinder, cuboid, or prism.

4. The signal-transmittable combined hydrometer according to claim 1, wherein, The first ratio (Ka) is less than the second ratio (Kb).

5. A signal-remote composite hydrometer according to any one of claims 1 to 4, characterized in that, The sensing unit is an optical sensor, a magnetostrictive displacement sensor, or a capacitive displacement sensor.

6. The signal-remote composite hydrometer according to claim 5, wherein, The sensing unit is configured to convert the detected height difference or change in height difference into an electrical signal or an optical signal.

7. The signal-remote composite hydrometer according to claim 6, wherein, It also includes a signal processing unit, which is communicatively connected to the sensing unit, for receiving the electrical signal or optical signal, and calculating the density or density change of the liquid to be tested based on the first ratio (Ka) and the second ratio (Kb).

8. The signal-remote composite hydrometer according to claim 7, wherein, It also includes a housing, in which the first floating unit (A) and the second floating unit (B) are at least partially located, and the housing has a channel for liquid to enter.

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