CN107036931A - A kind of apparatus and method of strength of fluid measurement - Google Patents

Abstract

The invention discloses a device and method for measuring liquid concentration, which comprises a box cover, a wire-feeding device, a bracket, a unit weight, a box body, a liquid to be tested, a box bottom, a control display, a liquid level gauge, a liquid chamber, and a replacement chamber , a level measuring instrument, a water discharge valve port, a liquid chamber and a replacement chamber are arranged inside the box, a partition is arranged between the liquid chamber and the replacement chamber, a bracket is arranged on the upper side wall of the liquid chamber, and the bracket One end is provided with a wire-releasing device, and a unit weight is arranged under the wire-releasing device, and the unit weight is connected with the wire-releasing device through a glass fiber thread, and the liquid to be tested is placed in the liquid chamber. The structure of the liquid concentration measuring device designed by the present invention is reasonable and convenient to use, and is convenient for measuring the concentration of different liquids. The device is made of different materials and is suitable for different liquid concentration detection. Based on Archimedes, it can judge and automatically calculate the liquid concentration. concentration.

Description

Apparatus and method for liquid concentration measurement

technical field

The invention relates to a liquid concentration measurement method; the invention also relates to a liquid concentration measurement device, in particular to a liquid concentration measurement device and method.

Background technique

The broad concept of concentration refers to the amount of solute in a certain amount of solution or solvent; this general concept of concentration has no clear meaning just like the concept of "quantity"; customarily, the amount of solution involved in concentration is taken as volume, and the amount of solution is The mass is often taken, and the amount of the solute is taken from the amount, quality, and volume of the substance. In the existing liquid concentration measuring device, there are high costs, inconvenient use, and inconvenient use in schools and other small research institutions. The measurement method It is cumbersome and inconvenient for non-professionals to operate.

Contents of the invention

The object of the present invention is to provide a device and method for liquid concentration measurement to solve the disadvantages of the prior art, such as cumbersome measurement steps, high production cost, inconvenient use and production, cumbersome measurement methods, and inconvenient operation by non-professionals.

To achieve the above object, the present invention provides the following technical solutions:

A device for measuring liquid concentration, including a box cover, a wire-feeding device, a bracket, a unit weight, a box body, a liquid to be tested, a box bottom, a control display, a liquid level gauge, a liquid chamber, a replacement chamber, a level measuring instrument, and a water release Valve port, the inside of the box is provided with a liquid chamber and a replacement chamber, a partition is provided between the liquid chamber and the replacement chamber, a bracket is provided on the upper side wall of the liquid chamber, and a wire release device is provided at one end of the bracket , a unit weight is arranged under the pay-off device, and the unit weight is connected with the pay-off device through a glass fiber line, the liquid to be tested is placed in the liquid cavity, and the top of the box is provided with a box cover, and The bottom of the box body is provided with a box bottom, and a level measuring instrument is arranged on the bottom of the box, a liquid level measuring instrument is arranged on the side wall of the replacement chamber, and a water discharge valve port is arranged at the bottom of the replacement chamber, and the outer wall of the replacement chamber A control display is provided.

Preferably, a pressure sensing device is provided on the outside of the box, and the pressure sensing device is connected to the wire releasing device through glass fiber wires.

Preferably, a wrapping layer is arranged on the outside of the unit weight.

Preferably, the box body is made of transparent glass, transparent plastic or alloy.

Preferably, the liquid level measuring instrument transmits the measurement signal to the control display, and the control display is provided with a liquid crystal display.

A method for measuring liquid concentration is characterized in that the selected equipment is a device for measuring liquid concentration, and before use, an appropriate amount of liquid to be tested is placed in a container and respectively contacted with glass, plastic and metal in sequence for observation and use. Among them, the material undergoes a chemical reaction. When the chemical reaction occurs, the device of the corresponding material is actively removed when the device is selected. After the detection is completed, the appropriate box is selected, the box is placed on the horizontal test bench, and the level measuring instrument is used to detect whether the box is in In the horizontal state, open the box cover and inject the liquid to be tested into the liquid chamber, so that the height of the liquid to be tested just reaches the height of the partition, and the unit weight is immersed in the liquid downward through the wire-releasing device. The mass of the unit weight is fixed m, According to Archimedes' principle, the buoyant force on an object floating in a liquid is equal to the weight of the liquid it displaces

Buoyancy F=mg=pvg;

The liquid to be tested is discharged into the replacement chamber, and the liquid level change is automatically measured through the liquid level measurement on the side wall of the replacement chamber, and the liquid level change is fed back to the control display. The cross-sectional area of the bottom surface of the replacement chamber is S as a fixed value:

F=mg=ρvg=ρS△hg;

ρ = m/S△h;

The density value ρ of the liquid to be tested can be directly calculated through the calculation formula.

Compared with the prior art, the beneficial effects of the present invention are: the structure of the liquid concentration measuring device designed by the present invention is reasonable and easy to use, and it is convenient to measure the concentration of different liquids. The device is made of different materials and is suitable for different liquid concentration detection. Based on Archimedes, to judge and automatically calculate the concentration of the liquid, the pay-off device and the pressure sensing device judge whether the unit weight is completely immersed in the liquid surface, to avoid that the unit weight is not completely immersed in the liquid surface due to the tension of the rope The measurement result is inaccurate, and the liquid can be discharged from the replacement chamber in time through the water release valve to avoid the liquid remaining in the replacement chamber before measurement, resulting in an increase in the error of the measurement result. According to different liquid volumes, you can choose a tank with a suitable volume The size of the body and the corresponding liquid cavity and the displacement cavity, through the device and method, it is convenient to demonstrate Archimedes' law in the teaching just now and to quickly measure the liquid concentration in the teaching experiment, which is convenient for guiding students and allowing them to operate experiments independently.

Description of drawings

Fig. 1 is the structural representation of the device of a kind of liquid concentration measurement of the present invention;

Fig. 2 is a schematic diagram of the use of a device for liquid concentration measurement of the present invention;

Fig. 3 is a structural schematic diagram of a discharge device of a liquid concentration measurement device and method of the present invention.

In the figure: 1. Box cover; 2. Pay-off device; 21. Pressure sensing device; 3. Bracket; 4. Unit weight; 5. Box body; 6. Liquid to be tested; 7. Box bottom; 8. Control display; 9. Liquid level gauge; 10. Liquid chamber; 11. Replacement chamber; 12. Level measuring instrument; 13. Drain valve port.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figures 1 to 3. In the embodiment of the present invention, a device for measuring liquid concentration includes a box cover 1, a wire release device 2, a bracket 3, a unit weight 4, a box body 5, a liquid to be tested 6, and a box bottom 7 , control display 8, liquid level gauge 9, liquid chamber 10, replacement chamber 11, level measuring instrument 12, water discharge valve port 13, the inside of described casing 5 is provided with liquid chamber 10 and replacement chamber 11, and described liquid chamber 10 A partition is provided between the liquid chamber 11 and the replacement chamber 11, a support 3 is provided on the upper side wall of the liquid chamber 10, and a wire release device 2 is provided at one end of the support 3, and a unit weight 4 is provided below the wire release device 2 , and the unit weight 4 is connected with the pay-off device 2 through a glass fiber line, the liquid to be tested 6 is placed in the liquid chamber 10, the top of the box 5 is provided with a box cover 1, and the bottom of the box 5 is provided with The bottom of the tank 7, the bottom of the tank 7 is provided with a level measuring instrument 12, the side wall of the replacement chamber 11 is provided with a liquid level measuring device 12, and the bottom of the replacement chamber 11 is provided with a water discharge valve port 13, the replacement chamber 11 The outer wall is provided with a control display 8.

The outer side of the box body 5 is provided with a pressure sensing device 21, and the pressure sensing device 21 is connected with the wire release device 2 through a glass fiber line, and the outside of the unit weight 4 is provided with a wrapping layer. There is a layer of wrapping layer to avoid the chemical reaction between the unit weight and the liquid to be tested, which is convenient for cleaning the unit weight and avoids the error of the calculation result caused by the mass change of the unit weight during use. When selecting the unit weight, you should choose the density The unit weight 4 that is less than the density of the liquid to be measured and floats on the liquid surface of the liquid to be measured, the main body of the box body 5 is made of transparent glass, transparent plastic or alloy, and the liquid level measuring instrument 12 sends the measurement signal to the control display 8 , and the control display 8 is provided with a liquid crystal display.

A method for measuring liquid concentration. The selected equipment is a device for measuring liquid concentration. Before use, take out an appropriate amount of the liquid to be tested and place it in a container, respectively, in contact with glass, plastic and metal in order to observe the chemical reaction with the materials in it. Reaction, when a chemical reaction occurs, actively remove the device of the corresponding material when selecting the device. After the detection is completed, select the appropriate box 5, place the box 5 on the horizontal test bench, and use the level measuring instrument 12 to detect whether the box is at the level. state, open the box cover 1 and inject the liquid to be tested into the liquid chamber 10, so that the height of the liquid to be tested just reaches the height of the partition, and the unit weight 4 is immersed in the liquid downward through the wire-feeding device 2, the mass of the unit weight 4 To set m, the buoyant force on an object floating in a liquid based on Archimedes' principle is equal to the weight of the liquid it displaces

Buoyancy F=mg=pvg;

The liquid to be tested is discharged into the replacement chamber 10, the liquid level change is automatically measured through the liquid level measurement on the side wall of the replacement chamber 10, and the liquid level change is fed back to the control display 8. The cross-sectional area of the bottom surface of the replacement chamber 10 is S The fixed value is:

F=mg=ρvg=ρS△hg;

ρ = m/S△h;

The density value ρ of the liquid to be tested can be directly calculated through the calculation formula.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. a kind of device of strength of fluid measurement, including case lid（1）, actinobacillus device（2）, support（3）, unit weight（4）, casing （5）, testing liquid（6）, bottom（7）, control display（8）, fluid level measuring gauge（9）, fluid chamber（10）, displacement chamber（11）, water Flat measuring instrument（12）, discharge water valve port（13）, it is characterised in that the casing（5）Inside set fluid chamber（10）With displacement chamber （11）, the fluid chamber（10）With displacement chamber（11）Between be provided with dividing plate, the fluid chamber（10）Upper side wall is provided with branch Frame（3）, and support（3）One end be provided with actinobacillus device（2）, the actinobacillus device（2）Lower section be provided with unit weight （4）, and unit weight（4）With actinobacillus device（2）Connected by glass wire, the fluid chamber（10）Interior placement testing liquid （6）, the casing（5）Top be provided with case lid（1）, and casing（5）Bottom be provided with bottom（7）, the bottom（7）On It is provided with horizontal measuring instrument（12）, the displacement chamber（11）Side wall on be provided with fluid level measuring instrument（12）, and displacement chamber（11） Bottom be provided with the valve port that discharges water（13）, the displacement chamber（11）Outer wall be provided with control display（8）.

2. a kind of device of strength of fluid measurement according to claim 1, it is characterised in that the casing（5）Outside It is provided with pressure sensitive device（21）, and pressure sensitive device（21）With actinobacillus device（2）Connected by glass wire.

3. a kind of device of strength of fluid measurement according to claim 1, it is characterised in that the unit weight（4）Outside Portion is provided with integument.

4. a kind of device of strength of fluid measurement according to claim 1, it is characterised in that the casing（5）Main body is selected With clear glass, transparent plastic or alloy material.

5. a kind of device of strength of fluid measurement according to claim 1, it is characterised in that the fluid level measuring instrument（12） Control display is given by measurement signal special delivery（8）, and control display（8）On be provided with LCDs.

6. a kind of method of strength of fluid measurement, it is characterised in that selected equipment is the device that a kind of strength of fluid is measured, Using it is preceding will first take out appropriate testing liquid place in a reservoir respectively at glass, plastics and metal contact successively observation using with Wherein material chemically reacts, and actively removes the device of correspondence material, detection when from device when chemically reacting After the completion of select suitable casing（5）, by casing（5）It is placed on horizontal experimental bench, passes through horizontal measuring instrument（12）Detection case Whether body is in horizontality, opens case lid（1）Testing liquid is injected into fluid chamber（10）, testing liquid height is just reached To the height of dividing plate, pass through actinobacillus device（2）By unit weight（4）Downwards in immersion liquid, unit weight（4）Quality be fixed M is put, its weight for discharging liquid is equal to based on the buoyancy suffered by the floating object in a liquid of Archimedes principle

Buoyancy F=mg=pvg；

Testing liquid is drained into displacement chamber（10）It is interior, by replacing chamber（10）Level gauging automatic measurement liquid level on the wall of side becomes Change, liquid level change is fed back into control display（8）On, replace chamber（10）Bottom surface cross-sectional area be S be definite value then：

F=mg=ρvg=ρS△hg；

ρ=m/S △ h；

The density value ρ of testing liquid can be directly calculated by calculation formula.