CN219996818U

CN219996818U - Measuring device for viscosity coefficient of liquid

Info

Publication number: CN219996818U
Application number: CN202320333479.5U
Authority: CN
Inventors: 朱昌勇; 梁一江; 陈仁欢; 麦漫佳
Original assignee: Shaoguan University
Current assignee: Shaoguan University
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2023-11-10
Anticipated expiration: 2033-02-27

Abstract

The utility model discloses a liquid viscosity coefficient measuring device which comprises a storage box, wherein a stirrer and a digital display intelligent temperature controller for heating and detecting Wen Daice liquid are arranged in the storage box, a feeding funnel is arranged on the storage box, a liquid outlet pipe is connected to the storage box, a liquid level measuring assembly and a flow rate sensor are arranged on the liquid outlet pipe, and the flow rate sensor is connected with the digital display intelligent temperature controller. The utility model can accurately measure the viscosity coefficient of water in a certain temperature range, has wider applicability and simple operation.

Description

Measuring device for viscosity coefficient of liquid

Technical Field

The utility model relates to a measuring device, in particular to a device for measuring viscosity coefficient of liquid.

Background

The property of liquids that produce internal stresses when in motion is called tackiness. This characteristic is due to the molecular structure of the liquid, the attractive forces between molecules and the state of motion, which is manifested by internal friction forces that occur when one layer of liquid has relative motion to its adjacent layer. The viscosity coefficient of the liquid is one of important physical properties and technical indexes of the liquid, is an important parameter for representing the deformation resistance of the liquid, is also a physical quantity reflecting the viscosity force in the liquid, and has important significance in chemistry, medicine, hydraulic engineering, material science, mechanical industry and national defense construction.

At present, the measurement method of viscosity coefficient mainly comprises a capillary method, a ball falling method, a dropping weight method, a rotating method and the like. The ball drop method is widely adopted due to the particular simplicity, but the traditional ball drop method has obvious defects, and a plurality of problems are encountered when the general liquid is precisely measured: for example, errors exist in manual timing and measurement, so that the precision cannot be ensured; whether the ball moves at a uniform speed or not is difficult to judge, so that the reliability of the measured value is reduced; when a large amount of experimental data is needed, quick and accurate measurement cannot be performed, and the method is not suitable for measuring liquid with low viscosity coefficient. The rotary drum method is to fill the liquid to be measured between the two drum shafts, the outer drum rotates at a constant speed, and viscous moment received by the inner drum is measured, however, the constant speed section is not easy to determine, and a large measurement error is often caused. The capillary method has few intensive researches, and the device has complex structure and complicated experimental steps.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a liquid viscosity coefficient measuring device.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a liquid viscosity coefficient measuring device, includes the storage box, be equipped with the agitator in the storage box and be used for heating and detect the digital display intelligent temperature controller of accuse Wen Daice liquid, be equipped with feed hopper on the storage box, be connected with the drain pipe on the storage box, the drain pipe facial make-up is equipped with liquid level measurement subassembly and flow velocity transducer, flow velocity transducer is connected with digital display intelligent temperature controller.

As a further improvement scheme, the liquid level measuring assembly comprises at least two vertical capillaries, the vertical capillaries are vertically connected with the liquid outlet pipe, a liquid level measuring sensor is arranged in each vertical capillary, and the liquid level measuring sensor is connected with the digital display intelligent temperature controller.

As a further improvement, the liquid outlet pipe is a capillary pipe, and the flow rate sensor is arranged in a region between the outlet end of the liquid outlet pipe and the vertical capillary pipe.

As a further development, a liquid control valve is provided on the outlet pipe, which liquid control valve is located in the region between the vertical capillary and the storage tank.

As a further improvement scheme, the drain pipe is connected to the bottom of the storage box, and the storage box is fixed through bracket installation.

As a further improvement scheme, the area where the outlet end of the liquid outlet pipe is located is provided with a collector, one side of the collector is provided with a circulating water tank, a circulating pump is arranged in the circulating water tank, the liquid outlet end of the circulating pump is connected with the top of the storage tank through a pipeline, and the liquid inlet end of the circulating pump is connected with the collector through a pipeline.

As a further improvement, the collector is a beaker.

As a further improvement scheme, the outer side surface of the storage box is provided with a heat preservation and insulation layer.

As a further improvement scheme, the heat preservation and insulation layer is made of aerogel materials.

As a further improvement scheme, the digital display intelligent temperature controller comprises a display, a heater and a temperature sensor, wherein the heater is arranged in the storage box or on the side wall of the storage box, the display is arranged outside the storage box, and the temperature sensor is arranged in the storage box and is connected with the heater and the display.

Compared with the prior art, the utility model has the following beneficial technical effects:

the liquid feeding device is simple in operation, liquid is added through the feeding hopper, the liquid enters the liquid outlet pipe after passing through the storage box, the flow speed can be measured by the flow speed sensor when being discharged from the liquid outlet pipe, meanwhile, the liquid level difference is formed by combining the vertical capillary, the viscosity coefficient of the liquid can be accurately calculated by using the Poisson's law formula to carry out reverse thrust according to the liquid level difference and the liquid flow data, the viscosity coefficient of the liquid of the same kind at different temperatures can be measured, the measuring accuracy is high, and the liquid feeding device is not easy to be influenced by manual operation.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of a storage box according to the present utility model;

fig. 3 is a schematic view showing a state of a vertical capillary tube according to the present utility model.

Reference numerals:

the intelligent temperature controller comprises a storage box 1, a digital display intelligent temperature controller 2, a stirrer 3, a feeding funnel 4, a bracket 5, a liquid control valve 6, a liquid outlet pipe 7, a vertical capillary tube 8, a liquid level measuring sensor 9, a flow rate sensor 10, a collector 11, a circulating water tank 12 and a heat preservation and insulation layer 13.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated azimuth or positional relationship is based on the azimuth or positional relationship shown in the drawings, it is merely for convenience of description and simplification of the description, and does not indicate or imply that the indicated apparatus or element must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

Referring to fig. 1-2, a liquid viscosity coefficient measuring device comprises a storage box 1, wherein a stirrer 3 and a digital display intelligent temperature controller 2 for heating and detecting Wen Daice liquid are arranged in the storage box 1, a feed hopper 4 is arranged on the storage box 1, a liquid outlet pipe 7 is connected to the storage box 1, a liquid level measuring component and a flow velocity sensor 10 are arranged on the liquid outlet pipe 7, and the flow velocity sensor 10 is connected with the digital display intelligent temperature controller 2. The storage tank is used for storing liquid, and the liquid is injected into the storage tank through the feeding hopper. The agitator can include motor and puddler, and the puddler stretches into the storage incasement, and the motor is connected with the puddler, drives the puddler through the motor and rotates, and the motor mountable is in the storage case upper end, through necessary support or fixed plate installation, keeps the stability of motor, and the support can be fixed on a curb plate, or the wall. Liquid from the storage box can enter the drain pipe, before flowing out from the outlet end of drain pipe, can pass through liquid level measurement assembly first, obtain liquid level, then combine the velocity of flow of the liquid that flow sensor measured, combine poiseuille law formula to carry out the reverse thrust just can calculate the viscosity coefficient of liquid accurately, can conveniently control liquid under different temperatures through digital display intelligent temperature controller to the viscosity coefficient of same kind of liquid under different temperatures is measured.

The storage box, the bracket and the like are all made of pp plate environment-friendly materials.

The digital display intelligent temperature controller comprises a display, a heater and a temperature sensor, wherein the heater is arranged in the storage box or on the side wall of the storage box, the display is arranged outside the storage box, and the temperature sensor is arranged in the storage box and connected with the heater and the display. The heater is connected with an external power supply through a circuit or connected with a battery assembly, liquid in the storage box is heated through the heater, the temperature sensor detects the temperature of the liquid in real time, after the temperature is heated to a set temperature, the heater stops heating, and the temperature sensor also transmits the detected temperature value to the display for display, so that the temperature sensor is convenient to check.

For easy control, a liquid control valve 6 is provided on the outlet pipe 7, which liquid control valve 6 is usually provided at the outlet pipe 7 at the bottom of the storage tank 1, and is initially closed, and after the temperature of the liquid in the storage tank is heated to a set temperature, the liquid control valve is opened to allow the liquid in the storage tank to flow into the outlet pipe for corresponding measurement.

Example two

Referring to fig. 1-3, a liquid viscosity coefficient measuring device, including storage box 1, be equipped with agitator 3 and be used for heating and detecting the digital display intelligent temperature controller 2 of accuse Wen Daice liquid in the storage box 1, be equipped with feed hopper 4 on the storage box 1, be connected with drain pipe 7 on the storage box 1, be equipped with liquid level measurement subassembly and flow rate sensor 10 on the drain pipe 7, flow rate sensor 10 is connected with digital display intelligent temperature controller 2, liquid level measurement subassembly includes two vertical capillaries 8, and this two vertical capillaries 8 are connected with drain pipe 7 is perpendicular, all are equipped with liquid level measurement sensor 9 in two vertical capillaries 8, liquid level measurement sensor 9 is connected with digital display intelligent temperature controller 2, shows the liquid level numerical value that detects in the display.

For convenience of description, in this embodiment, a first vertical capillary is defined as a space between the two vertical capillaries and the storage tank, and another vertical capillary is defined as a second vertical capillary, and liquid coming out of the storage tank flows through the first vertical capillary and the second vertical capillary in sequence. In the process of liquid pipe flow transmission, the liquid has a certain temperature reduction, that is, the temperature of the liquid flowing through the first vertical capillary tube is higher than the temperature of the liquid flowing through the second vertical capillary tube. By means of the interaction between liquid and solid molecules, water molecules lean against the cylindrical surface of glass to form crescent liquid level difference, and the finer the conduit is, the higher the temperature is, the more obvious the capillary phenomenon is, that is, the higher the temperature of liquid is, and the higher the height of climbing along the capillary is. Therefore, by utilizing the principle, the liquid level rising in the first vertical capillary and the liquid level rising in the second vertical capillary will have a height difference when the liquid passes through the first vertical capillary and the second vertical capillary due to different temperatures of the liquid at the two vertical capillaries, the height difference can be calculated by directly obtaining the difference value by utilizing the numerical value measured by the liquid level measuring sensor, and then the viscosity coefficient at the current temperature can be calculated by combining the flow speed of the measured liquid and the poiseuille law formula. For the same liquid, different temperatures can be obtained by initial heating, the viscosity coefficient of the same liquid at different temperatures can be obtained, the measurement is convenient, the interference of human factors is not easy, and the measurement accuracy is high.

The drain pipe is a capillary, and the flow velocity sensor is arranged in a region between the outlet end of the drain pipe and the vertical capillary. The drain pipe is connected in the bottom of storage box, and the storage box passes through the support mounting and fixes, need not pass through extra power unit, utilizes the self gravity of liquid, makes the flow transmission of liquid realization in the drain pipe.

By adopting two vertical capillaries, the required parameters can be easily measured without adopting other additional complex mechanisms, and the complexity of the whole device structure is reduced.

Example III

Referring to fig. 1-3, a liquid viscosity coefficient measuring device, including storage box 1, be equipped with agitator 3 and be used for heating and detecting the digital display intelligent temperature controller 2 of accuse Wen Daice liquid in the storage box 1, be equipped with feed hopper 4 on the storage box 1, be connected with drain pipe 7 on the storage box 1, be equipped with liquid level measurement subassembly and flow sensor 10 on the drain pipe 7, flow sensor 10 is connected with digital display intelligent temperature controller 2, the exit end place area of drain pipe 7 is provided with collector 11, is equipped with circulation tank 12 in collector 11 one side, is equipped with the circulating pump in the circulation tank 12, and the liquid outlet end of circulating pump is connected with the top of storage box through the pipeline, and the feed liquor end of circulating pump is connected with the collector through the pipeline, and the collector can be the beaker of selecting, perhaps when measuring liquid is more, can select great splendid attire container. Liquid discharged from the liquid outlet pipe directly falls into the collector, liquid in the collector 11 is pumped to the circulating water tank 12 by utilizing a circulating pump in the circulating water tank and then is returned to the storage tank 1, so that the cyclic utilization of the liquid is realized, the waste of resources is avoided, and the measurement of viscosity coefficients of the same liquid at different temperatures can be conveniently realized. Heating to different temperatures before and after several times respectively, and checking viscosity coefficients at different temperatures.

In addition, the outer side face of the storage box 1 is provided with a heat preservation and insulation layer 13, the heat preservation and insulation layer is made of aerogel materials, and heat of liquid in the storage box can be preserved by utilizing the heat preservation and insulation layer, so that the liquid is prevented from being too fast in heat dissipation in the experimental process.

During operation, the liquid control valve is kept closed, liquid to be detected is added to the water storage device through the feeding funnel, after the liquid to be detected is heated to the required temperature by the digital display intelligent temperature control heater, the liquid is uniformly stirred by the stirrer, whether the display screen of the digital display intelligent temperature controller reaches the required temperature is observed, the heating device is closed after the temperature reaches the required temperature, the liquid control valve is opened, the liquid to be detected flows out through the liquid outlet pipe, a liquid level difference is formed when the liquid passes through two vertical tubules, a detection signal of the liquid level difference is transmitted to the display through the liquid level measuring sensor, a flow velocity detection signal is transmitted to the liquid flow velocity display screen through the liquid flow velocity sensor for displaying, the display can record the liquid flow velocity, and the liquid flow is obtained through data processing. In the process, the display can record the liquid level, and the liquid level difference is obtained after data processing. According to the liquid level difference and the liquid flow data, the viscosity coefficient of the liquid can be accurately calculated by using the Poisson's law formula to carry out back-pushing. The whole process is convenient to operate, and automatic operation can be realized through setting of a control program.

In specific implementation, the density ρ of the liquid to be measured is measured by using a densimeter, the inner diameter R of the liquid outlet pipe is obtained by using a vernier caliper, the length L between two vertical capillaries on the liquid outlet pipe is measured by using the vernier caliper, the liquid level difference deltah between the two vertical capillaries can be measured by a liquid level sensor measuring device, the volume Q of the liquid flowing in the section of the liquid outlet pipe in unit time is called as volume flow, and the volume flow can be measured by a flow rate sensor. As known from poise She Gong, the volume flow through a liquid outlet pipe in a laminar flow state is

The viscosity coefficient mu is obtained by the reverse of the above formula

The inner diameter of the liquid outlet pipe can be 4.3mm in the experiment, and the length between two vertical capillaries is 10.1cm.

The viscosity coefficient of the liquid at the current temperature can be conveniently calculated through the formula, and the problems that the existing device for measuring the viscosity coefficient of the liquid is limited by the viscosity coefficient, the liquid in the viscosity coefficient part range can be measured only, the accuracy of measuring the viscosity coefficient of the liquid is greatly influenced by human factors, the viscosity coefficients of the liquid with the same liquid and different temperatures are difficult to measure and the measuring method is complex are effectively solved.

It should be noted that, the foregoing is only a preferred embodiment of the present utility model, and the present utility model is not limited to the foregoing embodiment, but it should be understood that although the present utility model has been described in detail with reference to the embodiment, it is possible for those skilled in the art to make modifications to the technical solutions described in the foregoing embodiment, or to make equivalent substitutions for some technical features thereof, but any modifications, equivalent substitutions, improvements and the like within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a measuring device of liquid viscosity coefficient, includes the storage tank, its characterized in that, be equipped with the agitator in the storage tank and be used for heating and detecting the digital display intelligent temperature controller of accuse Wen Daice liquid, be equipped with feed hopper on the storage tank, be connected with the drain pipe on the storage tank, be equipped with liquid level measurement subassembly and flow velocity transducer on the drain pipe, flow velocity transducer is connected with digital display intelligent temperature controller.

2. The device for measuring the viscosity coefficient of liquid according to claim 1, wherein the liquid level measuring assembly comprises at least two vertical capillaries, the vertical capillaries are vertically connected with the liquid outlet pipe, a liquid level measuring sensor is arranged in each vertical capillary, and the liquid level measuring sensor is connected with the digital display intelligent temperature controller.

3. The device for measuring the viscosity coefficient of a liquid according to claim 2, wherein the liquid outlet pipe is a capillary pipe, and the flow rate sensor is provided in a region between an outlet end of the liquid outlet pipe and the vertical capillary pipe.

4. The device for measuring the viscosity coefficient of a liquid according to claim 1, wherein a liquid control valve is provided on the liquid outlet pipe, the liquid control valve being located in a region between the vertical capillary and the storage tank.

5. The device for measuring the viscosity coefficient of liquid according to claim 1, wherein the liquid outlet pipe is connected to the bottom of the storage tank, and the storage tank is fixed by a bracket.

6. The device for measuring the viscosity coefficient of liquid according to claim 1, wherein the area where the outlet end of the liquid outlet pipe is located is provided with a collector, a circulating water tank is arranged on one side of the collector, a circulating pump is arranged in the circulating water tank, the liquid outlet end of the circulating pump is connected with the top of the storage tank through a pipeline, and the liquid inlet end of the circulating pump is connected with the collector through a pipeline.

7. The device for measuring the viscosity coefficient of a liquid according to claim 6, wherein the collector is a beaker.

8. The device for measuring the viscosity coefficient of liquid according to claim 1, wherein the outer side surface of the storage tank is provided with a heat-insulating layer.

9. The device for measuring the viscosity coefficient of a liquid according to claim 8, wherein the heat-insulating layer is made of an aerogel material.

10. The device for measuring the viscosity coefficient of liquid according to claim 1, wherein the digital display intelligent temperature controller comprises a display, a heater and a temperature sensor, the heater is arranged in the storage box or on the side wall, the display is arranged outside the storage box, and the temperature sensor is arranged in the storage box and connected with the heater and the display.