CN220819122U - Short-range integrated capacitive liquid level switch - Google Patents
Short-range integrated capacitive liquid level switch Download PDFInfo
- Publication number
- CN220819122U CN220819122U CN202322261215.6U CN202322261215U CN220819122U CN 220819122 U CN220819122 U CN 220819122U CN 202322261215 U CN202322261215 U CN 202322261215U CN 220819122 U CN220819122 U CN 220819122U
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- inner core
- integrated
- liquid level
- level switch
- sensor
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- 239000007788 liquid Substances 0.000 title claims abstract description 39
- -1 perfluoro Chemical group 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000004382 potting Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 3
- 239000000463 material Substances 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 6
- 238000009776 industrial production Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses a short-range integrated capacitive liquid level switch, which comprises a shell, an integrated joint, a sensor inner core, a positive electrode and a negative electrode, wherein the shell is provided with a first electrode and a second electrode; a shell: the lower part is connected with an integrated joint through threads, a sensor inner core is arranged in the integrated joint, a control circuit is arranged at the upper part of the sensor inner core, and a positive electrode and a negative electrode are arranged at the lower end of the sensor inner core; wherein: the lower end of the sensor inner core is divided into a front part and a rear part, and the positive electrode and the negative electrode are respectively and correspondingly attached to the front part and the rear part of the lower end of the sensor inner core. The short-range integrated capacitive liquid level switch not only overcomes the defect that other common liquid level switch materials cannot measure the solution on the basis of guaranteeing the product performance, but also adopts a perfluoro integrated structure, so that the risk that liquid leaks into the sensor is completely not considered, and the stability of the sensor is improved.
Description
Technical Field
The utility model relates to the technical field of liquid level switches, in particular to a short-range integrated capacitive liquid level switch.
Background
In modern industrial production, instruments and meters are important tools for detecting the running condition of equipment, and level gauges are important as instruments for measuring the level of a liquid medium in a container. The current liquid level meter types are mainly divided into magnetic levitation type, pressure type, ultrasonic type and the like, and most of the liquid level meters have the defects of insufficient metering precision, complex structure, high price and the like, and can not meet the requirements of modern industrial production. Thus, in recent years, a new type of capacitive gauge has been developed. The capacitive liquid level meter works by converting the position change of the measured object into capacitance for measurement. The liquid level meter has the advantages of high resolution, quick dynamic response and the like.
In the great background of the current "technical innovation", with the continuous popularization of capacitive level gauges, the need has arisen for a level switch that measures the liquid level in short ranges. The prior art provides a short-range integrated capacitive liquid level switch, which is characterized in that a common liquid level switch material in the prior art cannot measure a solution, and the liquid is easy to leak into a sensor to cause instability of the sensor.
Disclosure of utility model
The utility model aims to overcome the existing defects, provides the short-range integrated capacitive liquid level switch, not only overcomes the problem that other common liquid level switch materials cannot measure on the basis of ensuring the performance of products, but also adopts a perfluoro integrated structure, completely avoids the risk of liquid leakage into the sensor, improves the stability of the sensor, and can effectively solve the problems in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a short-range integrated capacitive liquid level switch comprises a shell, an integrated joint, a sensor inner core, a positive electrode and a negative electrode;
A shell: the lower part is connected with an integrated joint through threads, a sensor inner core is arranged in the integrated joint, a control circuit is arranged at the upper part of the sensor inner core, and a positive electrode and a negative electrode are arranged at the lower end of the sensor inner core;
Wherein: the lower end of the sensor inner core is divided into a front part and a rear part, and the positive electrode and the negative electrode are respectively and correspondingly attached to the front part and the rear part of the lower end of the sensor inner core.
Further, the shell is an aluminum shell, and a relay is arranged in the shell.
Furthermore, the integrated joint is a perfluoro integrated joint, and the perfluoro integrated joint is used, so that the difficulty in measuring in solutions which can not be measured by other common liquid level switch materials is overcome, the inside of the integrated joint is filled with the potting silica gel, the risk that liquid leaks into the sensor is not considered, and the stability of the sensor is improved.
Furthermore, the negative electrode is integrated, the positive electrode is uniformly divided into at least two parts, and the measurement accuracy is high.
Compared with the prior art, the utility model has the beneficial effects that: the short-range integrated capacitive liquid level switch has the following advantages:
1. The integrated joint of perfluoro-is used, so that the difficulty in measurement in solutions which cannot be measured by other common liquid level switch materials is overcome, the risk that liquid leaks into the sensor is not considered, and the stability of the sensor is improved.
2. The liquid level switch still adopts the capacitance measurement principle, and has the characteristics of high resolution efficiency, quick dynamic response and applicability to almost all solutions. The method is particularly suitable for measuring the liquid level of strong corrosion solution (strong acid, strong alkali and the like) in a normal pressure environment (-0.1-0.1 MPa) under a short range, and is used in the occasion requiring the output of switching value signals.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present utility model;
fig. 3 is a schematic view of the sensor core structure of the present utility model.
In the figure: 1a shell, 2 an integrated joint, 3a sensor inner core, 4 a positive electrode and 5 a negative electrode.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, the present embodiment provides a technical solution: a short-range integrated capacitive liquid level switch comprises a shell 1, an integrated joint 2, a sensor inner core 3, a positive electrode 4 and a negative electrode 5;
The shell 1: the integrated joint 2 is connected to the lower part through threads, the shell 1 is an aluminum shell and has a protection function, a relay is arranged in the shell 1, the integrated joint 2 is a perfluorinated integrated joint, the perfluorinated integrated joint is used, the difficulty of measurement in solutions which cannot be measured by other common liquid level switch materials is overcome, the risk of liquid leakage into the sensor is not considered, the stability of the sensor is improved, potting silica gel is filled in the integrated joint 2, the sensor is ensured to be applied to a complex field environment, a sensor inner core 3 is arranged in the integrated joint 2, a control circuit is arranged at the upper part of the sensor inner core 3, and a positive electrode 4 and a negative electrode 5 are arranged at the lower end of the sensor inner core 3;
Wherein: the lower end of the sensor inner core 3 is divided into a front part and a rear part, the positive electrode 4 and the negative electrode 5 are respectively and correspondingly attached to the front part and the rear part of the lower end of the sensor inner core 3, the negative electrode 5 is integrated, the positive electrode 4 is uniformly divided into at least two parts, the positive electrode 4 can be divided into a plurality of parts, and the positive electrodes 4 of the parts correspond to the negative electrodes 5, so that the measurement precision can be improved.
The working principle of the short-range integrated capacitive liquid level switch provided by the utility model is as follows: the sensor inner core 3 is stuck with a positive electrode and a negative electrode, and a capacitor is formed between the positive electrode and the negative electrode. When the measured medium level in the container changes, a change in the capacitance between the positive and negative electrodes is caused. After the short-range integrated capacitive liquid level switch is fixed on a container, the capacitance value between the positive electrode and the negative electrode on the sensor inner core 3 correspondingly changes along with the lifting of the liquid level of the measured liquid in the container, and the sensor converts the measured capacitance value acquired in real time into a liquid level height value through an internal algorithm. Outputting an upper limit alarm when the actual liquid level height is higher than the upper limit value; and outputting a lower limit alarm when the actual liquid level height is lower than the lower limit value.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (4)
1. A short-range integrated capacitive liquid level switch is characterized in that: comprises a shell (1), an integrated joint (2), a sensor inner core (3), a positive electrode (4) and a negative electrode (5);
Shell (1): the lower part is connected with an integrated joint (2) through threads, a sensor inner core (3) is arranged in the integrated joint (2), a control circuit is arranged on the upper part of the sensor inner core (3), and a positive electrode (4) and a negative electrode (5) are arranged at the lower end of the sensor inner core (3);
Wherein: the lower end of the sensor inner core (3) is divided into a front part and a rear part, and the positive electrode (4) and the negative electrode (5) are respectively and correspondingly attached to the front part and the rear part of the lower end of the sensor inner core (3).
2. A short-range integrated capacitive fluid level switch as claimed in claim 1 wherein: the shell (1) is an aluminum shell, and a relay is arranged in the shell (1).
3. A short-range integrated capacitive fluid level switch as claimed in claim 1 wherein: the integrated joint (2) is a perfluoro integrated joint, and the inside of the integrated joint (2) is filled with potting silica gel.
4. A short-range integrated capacitive fluid level switch as claimed in claim 1 wherein: the negative electrode (5) is integrated, and the positive electrode (4) is uniformly divided into at least two parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322261215.6U CN220819122U (en) | 2023-08-22 | 2023-08-22 | Short-range integrated capacitive liquid level switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322261215.6U CN220819122U (en) | 2023-08-22 | 2023-08-22 | Short-range integrated capacitive liquid level switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220819122U true CN220819122U (en) | 2024-04-19 |
Family
ID=90671013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322261215.6U Active CN220819122U (en) | 2023-08-22 | 2023-08-22 | Short-range integrated capacitive liquid level switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220819122U (en) |
-
2023
- 2023-08-22 CN CN202322261215.6U patent/CN220819122U/en active Active
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