CN210690444U

CN210690444U - Liquid purity detector

Info

Publication number: CN210690444U
Application number: CN201921008562.5U
Authority: CN
Inventors: 李奔; 薛程; 吕旭昊; 贺珍妮; 郭玉; 王俊玲
Original assignee: Academy of Armored Forces of PLA
Current assignee: Academy of Armored Forces of PLA
Priority date: 2019-05-21
Filing date: 2019-07-01
Publication date: 2020-06-05
Anticipated expiration: 2029-07-01

Abstract

The utility model discloses a liquid purity detector, which comprises a wave emitter, a standing wave detector, a container and a first clapboard; the transmitting end of the wave emitter and the receiving end of the standing wave detector are both arranged in a container, and the container is used for containing liquid to be detected; the transmitting end faces the receiving end; the first partition plate is arranged in the container and positioned on one side of the receiving end facing the transmitting end; the first spacer is arranged to reflect the waves emitted by the emitting end to form a standing wave.

Description

Liquid purity detector

Technical Field

The utility model relates to a liquid purity detects technical field, especially a liquid purity detector.

Background

In the prior art, the purity of the liquid is measured by chemical or physical methods.

The purity of the liquid is measured by a chemical method, and measurement calculation is performed after chemical reaction is generally carried out by using a chemical reagent; physical methods generally require calculation by measuring the mass of crystals after they have been precipitated by evaporation. The two methods are not only slow in measurement speed, but also difficult to guarantee measurement accuracy.

In the prior art, the purity of the liquid is measured by spectral analysis, but the spectral analyzer is expensive and is not suitable for the liquid purity measurement in general industry.

How to measure the purity of liquid quickly and accurately is one of the important problems to be solved urgently in the field.

SUMMERY OF THE UTILITY MODEL

The utility model provides a liquid purity detector to solve not enough among the prior art, it can be convenient for short-term test liquid purity.

The utility model provides a liquid purity detector, which comprises a wave emitter, a standing wave detector, a container and a first clapboard;

the transmitting end of the wave emitter and the receiving end of the standing wave detector are both arranged in the container, and the container is used for containing liquid to be detected; the transmitting end faces the receiving end;

the first partition plate is arranged in the container, and the first partition plate is positioned on one side of the receiving end, which faces the transmitting end; the first spacer is configured to reflect waves emitted by the emission end to form a standing wave.

The liquid purity measuring instrument as described above, wherein optionally the container is a glass tube;

the liquid purity detector also comprises a second partition plate, and the second partition plate is arranged in the glass tube; the first partition plate and the second partition plate are both connected with the glass tube in a sealing mode, and a detection cavity is formed between the first partition plate and the second partition plate;

and the glass tube is provided with a liquid inlet tube and a liquid outlet tube which are communicated with the detection cavity.

The liquid purity detector as described above, wherein optionally, the liquid purity detector further comprises a first bracket, a second bracket and a slide rail;

the sliding rail is fixedly arranged, and the length direction of the sliding rail is parallel to the connecting line of the transmitting end and the receiving end;

one end of the first support is connected with the sliding rail in a sliding mode, and the other end of the first support is fixedly connected with the transmitting end;

one end of the second support is connected with the sliding rail in a sliding mode, and the other end of the second support is fixedly connected with the receiving end.

The liquid purity detector as described above, wherein optionally, the wave transmitter further includes a wave signal source, a cable cavity transducer, a resonant cavity, an isolator, and an attenuator;

the wave signal source, the cable cavity transducer, the resonant cavity, the isolator, the attenuator and the wave transmitting end are connected in sequence;

the wave signal source is arranged to generate an electrical signal, and the cable cavity transducer is arranged to convert electrical energy of the electrical signal into vibrational energy to generate a wave; the resonant cavity, the isolator and the attenuator are used for processing waves;

the transmitting end is horn-shaped and is configured to transmit the processed wave.

The liquid purity detector as described above, wherein optionally the standing wave detector further comprises a detector and a display;

the detector is connected with the receiving end, and the display is electrically connected with the detector;

the receiver is horn-shaped, and the detector is used for converting the wave received by the receiver into an electric signal and outputting the electric signal to the display; the display is arranged to display a parameter signal of the standing wave.

The utility model discloses an to waiting to detect the internal launch wave of liquid, utilize the reflection of wave at the critical surface for form the standing wave in waiting to detect the liquid, through detecting the standing wave parameter, utilize the relation between predetermined liquid purity and the standing wave parameter to calculate the purity of the liquid that awaits measuring.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a flow chart illustrating the steps of a method for detecting the purity of a liquid according to the present invention;

fig. 2 is a schematic structural diagram of the liquid purity detector provided by the present invention.

Description of reference numerals:

1-wave emitter, 2-standing wave detector, 3-container, 4-first partition, 5-second partition, 6-detection cavity, 7-first support, 8-second support, 9-slide rail, 10-photoelectric sensor;

11-transmitting end, 12-wave signal source, 13-cable cavity transducer, 14-resonant cavity, 15-isolator and 16-attenuator;

21-detection end, 22-detector, 23-display;

31-liquid inlet pipe, 32-liquid outlet pipe.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Example 1

The utility model provides a liquid purity detection method, wherein, including following step:

s1, emitting the wave towards the liquid to be detected, and enabling the wave to form standing wave in the liquid to be detected; in particular, the emitted wave is a microwave. When the emitted wave passes through the liquid to be measured and reaches a critical surface of the liquid to be measured, a reflection phenomenon exists, and the reflected back wave is superposed with the incident wave, so that standing waves are formed. The transmission speed of the microwave in the liquid is influenced by the purity of the liquid in the transmission process, and the electromagnetic parameters of the liquid with different concentrations are different, so that the microwave forms a reflected wave on an interface, and the reflected wave and an incident wave are superposed to form a standing wave. The reflection coefficients of different media are different, and the standing wave ratio is different. Antinode U with standing wave ratio of standing wave voltage_maxAnd node U_minThe ratio of. The reflection coefficients of standing waves are different in different media, and the standing wave ratios of the standing waves are greatly different.

And S2, detecting parameters of the standing wave, wherein the parameters of the standing wave comprise standing wave ratio. Thus, the purity value is convenient to determine through the standing-wave ratio.

And S3, calculating the purity of the liquid to be measured according to the parameters of the standing wave. Specifically, the purity of the liquid to be measured is calculated from the standing wave ratio, and may be determined by a curve, a graph, or a relational expression in which the standing wave ratio corresponds to the purity of the liquid, for example. Of course, in this step, the curve, graph or relation of the standing wave ratio to the purity of the liquid is predetermined.

Therefore, the purity of the liquid can be detected by detecting the standing-wave ratio, so that the detection of the purity of the liquid is more convenient and accurate.

As a preferred mode, the method of forming a standing wave in the liquid to be measured includes:

transmitting waves with opposite directions and completely same frequency and transmission speed into the liquid to be detected along the same straight line; or, transmitting wave into the liquid to be detected along a straight line, and forming standing wave by using the reflected wave of the wave on the critical surface of the liquid to be detected. That is, there are two methods for forming a standing wave in a liquid to be measured, and a standing wave can be formed in a liquid to be measured by either of the methods, and the liquid purity can be detected from the parameters of the standing wave.

As a preferable mode, calculating the purity of the liquid to be measured according to the parameters of the standing wave includes: and substituting the standing wave parameters into a preset relational expression between the standing wave parameters and the purity of the liquid to be measured to calculate the purity of the liquid to be measured. Of course, the standing wave parameter may be substituted into a relationship curve between the preset standing wave parameter and the purity of the liquid to be measured. Specifically, the relation between the standing wave parameter and the purity of the liquid to be measured is obtained by the following steps: respectively emitting waves to a plurality of liquid with known purity, and respectively detecting standing wave parameters corresponding to the liquid with each purity; fitting each purity value with a corresponding standing wave parameter; and obtaining the relationship between the purity of the liquid and the standing wave parameters. Furthermore, the relation between the standing wave parameter and the purity of the liquid to be measured is obtained by using 8-10 groups of the liquids with different purities. For example, for a certain liquid, the standing wave parameters of the liquid with the purity of 0%, 30%, 50%, 70%, 90% and 100% are measured by the above method, and then each purity value is fitted with the corresponding standing wave parameter, so as to obtain a relation curve, a graph or a relation between the purity of the liquid and the standing wave parameters. Specifically, the fitting manner may be a polynomial fitting, or may be fitting in other manners, such as spline curve fitting, and the like. In order to obtain a more accurate corresponding relation between the purity and the standing wave parameters during fitting, more liquids with known purity can be selected for measurement and fitting.

Example 2

The utility model also provides a liquid purity detector, wherein, including wave emitter 1, standing wave detector 2, container 3 and first baffle 4. The wave emitter 1 is used for generating and emitting microwaves, and the standing wave detector 2 is used for detecting standing wave signals in the liquid to be detected and extracting existing standing wave parameters.

Specifically, the emitting end 11 of the wave emitter 1 and the receiving end 21 of the standing wave detector 2 are both installed in the container 3, and the container 3 is configured to contain the liquid to be detected; the transmitting end 11 faces the receiving end 21. In a specific implementation, the container 3 is a glass container.

The first partition plate 4 is installed in the container 3, and the first partition plate 4 is positioned on one side of the receiving end 21 facing the emitting end 11; the first partition 4 is arranged to reflect the waves emitted by the emission end 11 to form a standing wave.

When the liquid detection device is used specifically, liquid to be detected is injected into the container 3, then the wave emitter 1 and the standing wave detector 2 are opened, standing waves are formed between the emitting end 11 and the receiving end 21, standing wave parameters in the liquid to be detected are detected by the standing wave detector 2, and then the purity of the liquid to be detected is calculated according to the standing wave parameters. Specifically, the calculation is also performed by using the relationship between the purity and the standing wave parameter, which is measured in advance, and this is explained in detail in embodiment 1 and will not be described again here. Therefore, the purity of the liquid can be conveniently and rapidly detected.

In a preferred embodiment, the container 3 is a glass tube. Of course, other materials are possible, and a glass tube is preferable in this embodiment. The liquid purity detector also comprises a second partition plate 5, and the second partition plate 5 is arranged in the glass tube; the first partition plate 4 and the second partition plate 5 are both connected with the glass tube in a sealing manner, and a detection cavity 6 is formed between the first partition plate 4 and the second partition plate 5. The detection chamber 6 is arranged for containing a liquid to be measured. And a liquid inlet pipe 31 and a liquid outlet pipe 32 which are communicated with the detection cavity 6 are arranged on the glass tube. By providing the second partition 5, the detection chamber 6 is conveniently formed, and the emission end 11 can also be isolated from the liquid to be detected. By arranging the container 3 as a glass tube it is facilitated to arrange the receiving end 21 coaxially with the emitting end 11 and it is also possible to facilitate to move the receiving end 21 and/or the emitting end 11 along the length of the glass tube. Facilitating the measurement of data at different locations.

Through setting up feed liquor pipe 31 and drain pipe 32, increased liquid and advanced the exhaust apparatus, convenient detection and multiple measurements, specifically, feed liquor pipe 31 is located the top that detects chamber 6, and fluid-discharge tube 32 is located the below that detects chamber 6. To ensure the accuracy of the measurement, the detection chamber 6 should be cleaned with the liquid to be measured before the measurement.

Further, the device also comprises a first bracket 7, a second bracket 8 and a slide rail 9. Specifically, the slide rail 9 is fixedly arranged, and the length direction of the slide rail 9 is parallel to the connecting line of the transmitting end 11 and the receiving end 21. One end of the first support 7 is slidably connected with the sliding rail 9, and the other end of the first support 7 is fixedly connected with the transmitting end 11. One end of the second support 8 is slidably connected to the slide rail 9, and the other end of the second support 8 is fixedly connected to the receiving end 21. In specific implementation, the slide rail 9 is located below the container. Thus, by sliding the first support 7 and/or the second support 8, the distance between the receiving end 21 and the transmitting end 11 can be adjusted, so that standing waves can be generated, and meanwhile, data at different positions can be measured.

As a preferred embodiment, the wave transmitter 1 further comprises a wave signal source 12, a cable cavity transducer 13, a resonant cavity 14, an isolator 15 and an attenuator 16. The wave signal source 12, the cable cavity transducer 13, the resonant cavity 14, the isolator 15, the attenuator 16 and the wave transmitting end 11 are connected in sequence; the wave signal source 12 is arranged to generate an electrical signal, and the cable cavity transducer 13 is arranged to convert electrical energy of the electrical signal into vibrational energy to generate a wave; the resonant cavity 14, the isolator 15 and the attenuator 16 are used for processing waves; the transmitting end 11 is horn-shaped, and the transmitting end 11 is configured to transmit the processed wave. Specifically, a microwave signal source is used for providing a microwave signal, a cable cavity energy converter converts a microwave current signal into an aerial electromagnetic wave, a resonant cavity stores energy and selects frequency, loss is reduced, an isolator inhibits interference of public grounding, a frequency converter, an electromagnetic valve and unidentified pulses on equipment, an attenuator controls power level, and optimal noise coefficient and frequency conversion loss are obtained.

Further, the standing wave detector 2 further includes a detector 22 and a display 23; the detector 22 is connected with the receiving end 21, and the display 23 is electrically connected with the detector; the receiving end 21 is in a horn shape, and the detector 22 is configured to convert the wave received by the receiving end 21 into an electrical signal and output the electrical signal to the display 23; the display 23 is arranged to display a parameter signal of the standing wave. In this way, reading of measurement results is facilitated.

Set up transmitting terminal 11 and receiving terminal 21 to loudspeaker form, can fix the microwave signal of transmission on one side in a direction, reduce the loss that the radiation caused, on the other hand links to each other with the light slide rail between two loudspeaker, and convenient the removal measures the data of different positions.

In specific implementation, in order to facilitate calculation, the detector is used for converting the 22 microwave signal into a current signal, outputting a required signal, transmitting the required signal to a computer, collecting data by the computer, and calculating the data to obtain a final result. Further, the microwave is an electromagnetic wave.

The application process of this embodiment is as follows:

1. the relationship between the purity of the liquid to be measured and the standing wave parameters was predetermined as described in example 1. The skilled person can understand that the corresponding relation between the purity of a certain liquid and a standing parameter is determined once, the above operation does not need to be repeated during multiple measurements, and the corresponding relation to the liquid with the known relation can also be directly used for calculating the liquid to be measured of the liquid;

2. when the concentration of the liquid is measured, the liquid flows in from the inlet, the glass tube is filled, the concentration of the liquid in the liquid tube is continuously changed, the voltage values of the antinodes and the wave troughs are recorded by changing the distance between the transmitting horn and the receiving horn, the corresponding standing-wave ratio is calculated, and then the purity of the liquid to be measured is calculated according to a predetermined relational expression.

Specifically, in order to facilitate the description of the position between the receiving end 21 and the emitting end 11 during the measurement, the present liquid purity measuring instrument further includes a photoelectric sensor 10 mounted on the wave emitter 1 and/or the standing wave detector 2. The photoelectric sensor is arranged to detect the distance between the emitting end 11 and the receiving end 21, and the display 23 is also used to display the detection result of the photoelectric sensor 10. In specific use, the position between the photoelectric sensor 10 mounted on the wave emitter 1 and the emitting end 11 is relatively fixed, and the position between the photoelectric sensor 10 mounted on the standing wave detector 2 and the receiving end 21 is relatively fixed.

Although certain specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. The liquid purity detector is characterized by comprising a wave emitter (1), a standing wave detector (2), a container (3) and a first partition plate (4);

the transmitting end (11) of the wave transmitter (1) and the receiving end (21) of the standing wave detector (2) are both arranged in the container (3), and the container (3) is used for containing liquid to be detected; the transmitting end (11) faces the receiving end (21);

the first partition (4) is arranged in the container (3), and the first partition (4) is positioned on one side of the receiving end (21) facing the transmitting end (11); the first partition (4) is arranged for reflecting the waves emitted by the emission end (11) to form a standing wave.

2. The liquid purity detector according to claim 1, wherein the container (3) is a glass tube;

the liquid purity detector also comprises a second partition plate (5), and the second partition plate (5) is arranged in the glass tube; the first partition plate (4) and the second partition plate (5) are both connected with the glass tube in a sealing manner, and a detection cavity (6) is formed between the first partition plate (4) and the second partition plate (5);

and a liquid inlet pipe (31) and a liquid outlet pipe (32) which are communicated with the detection cavity are arranged on the glass tube.

3. The liquid purity detector according to claim 1, further comprising a first bracket (7), a second bracket (8) and a slide rail (9);

the sliding rail (9) is fixedly arranged, and the length direction of the sliding rail (9) is parallel to the connecting line of the transmitting end (11) and the receiving end (21);

one end of the first support (7) is connected with the sliding rail (9) in a sliding manner, and the other end of the first support (7) is fixedly connected with the transmitting end (11);

one end of the second support (8) is connected with the sliding rail (9) in a sliding mode, and the other end of the second support (8) is fixedly connected with the receiving end (21).

4. The liquid purity detector according to any of claims 1-3, wherein the wave emitter (1) further comprises a wave signal source (12), a cable cavity transducer (13), a resonant cavity (14), an isolator (15) and an attenuator (16);

the wave signal source (12), the cable cavity transducer (13), the resonant cavity (14), the isolator (15), the attenuator (16) and the wave transmitting end (11) are sequentially connected;

the wave signal source (12) is arranged for generating an electrical signal, the cable cavity transducer (13) is arranged for converting electrical energy of the electrical signal into vibrational energy for generating a wave; the resonant cavity (14), the isolator (15) and the attenuator (16) are used for processing waves;

the transmitting end (11) is horn-shaped, and the transmitting end (11) is used for transmitting the processed wave.

5. The liquid purity detector according to any of claims 1-3, wherein the standing wave detector (2) further comprises a detector (22) and a display (23);

the detector (22) is connected with the receiving end (21), and the display (23) is electrically connected with the detector;

the receiving end (21) is in a horn shape, and the wave detector (22) is used for converting the wave received by the receiving end (21) into an electric signal and outputting the electric signal to the display (23); the display (23) is arranged for displaying a parameter signal of the standing wave.