A liquid level sensor for monitoring liquid level in real time

Abstract

The utility model discloses a liquid level sensor of real -time monitoring liquid level belongs to liquid level sensor technical field, installs in the liquid storage tank, the liquid level sensor includes liquid receiving part, the liquid receiving part is directly contacted with the liquid in the liquid storage tank, the liquid receiving part includes the plug, the float ball, the surveying staff and the combination oil order that set gradually from below to top, be provided with the mobile magnetic ring in the float ball, be provided with the waveguide silk in the surveying staff, the plug, the float ball, the surveying staff and the combination oil order surface all have the PFA coating that coats, electronic warehouse, the electronic warehouse installs on the combination oil order top, be provided with the integrated circuit board in the electronic warehouse, the integrated circuit board generates current excitation pulse. The utility model can carry out liquid level monitoring to the liquid storage tank in real time, and its monitoring precision is high, is favorable to the accurate real -time liquid preparation operation of mixed liquid equipment, and this liquid level sensor has good high -temperature resistance and acid and alkali corrosion resistance, is favorable to the mixing of acid and alkali liquid and liquid preparation.

Description

Technical Field

[0001] This invention belongs to the field of liquid level sensor technology, and particularly relates to a liquid level sensor for real-time monitoring of liquid level. Background Technology

[0002] In the semiconductor cleaning field, various acid-base mixtures are used in the production process for cleaning. The mixing ratio of the liquids needs to be precisely controlled, and all components must meet the requirements of high purity, resistance to acid and alkali corrosion, and high temperature resistance. Therefore, mixing equipment is needed to mix various liquids. Currently, most mixing equipment uses weighing to dispense liquids. However, current mixing equipment occupies a large space, has low dispensing accuracy, and does not support real-time dispensing. Therefore, a liquid level sensor is needed to monitor the liquid level in the storage tank in real time so that the prepared liquid can be replenished into the storage tank at any time. Utility Model Content

[0003] This invention overcomes the shortcomings of the prior art by providing a liquid level sensor for real-time monitoring of liquid levels, thereby solving the problems existing in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a liquid level sensor for real-time monitoring of liquid level, installed inside a liquid storage tank, the liquid level sensor comprising...

[0005] The liquid receiving part is in direct contact with the liquid in the storage tank. The liquid receiving part includes a plug, a float, a measuring rod, and a combined oil valve arranged sequentially from bottom to top. The float is mounted on the measuring rod and moves along the length of the measuring rod. A movable magnetic ring is provided inside the float. A waveguide wire is provided inside the measuring rod. The surfaces of the plug, float, measuring rod, and combined oil valve are all coated with PFA coating.

[0006] An electronic compartment is installed above the combined oil valve. An integrated circuit board is installed inside the electronic compartment. The integrated circuit board generates current excitation pulses to move the movable magnetic ring along the length of the measuring rod.

[0007] In a preferred embodiment of this utility model, the electronic compartment is provided with a cable connector, which connects the integrated circuit board to the outside to supply power to the integrated circuit board and transmit signals to the outside.

[0008] In a preferred embodiment of this utility model, the electronic compartment is provided with an air inlet and an air outlet. High-pressure air is introduced into the electronic compartment through the air inlet, and high-pressure air is discharged from the electronic compartment through the air outlet.

[0009] In a preferred embodiment of this utility model, the combined oil ring is a semi-circular structure, and the combined oil ring is fixed inside the liquid storage tank so as to install the liquid level sensor inside the liquid storage tank.

[0010] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0011] The liquid level sensor of this invention can monitor the liquid level in the storage tank in real time. It has high monitoring accuracy, which is beneficial for accurate real-time liquid dispensing operation in the storage tank of the mixing equipment. In addition, the liquid level sensor has good high temperature resistance and acid and alkali corrosion resistance, which is beneficial for mixing acid and alkali liquids. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0013] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present utility model;

[0014] Figure 2 This is a top view of a preferred embodiment of the present invention;

[0015] Figure 3 This is a cross-sectional view of a preferred embodiment of the present invention;

[0016] Figure 4 This is a schematic diagram of a preferred embodiment of the present invention;

[0017] In the diagram: 10, Liquid receiving part; 11, Plug; 12, Float; 121, Moving magnetic ring; 13, Measuring rod; 131, Waveguide wire; 14, Combination oil seal; 20, Electronic compartment; 21, Integrated circuit board; 30, Cable connector; 40, Air inlet; 50, Air outlet. Detailed Implementation

[0018] The following drawings will disclose several embodiments of this utility model. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these physical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0019] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0020] This embodiment provides a liquid level sensor for real-time monitoring of liquid level. The liquid level sensor is installed inside the liquid storage tank and can monitor the liquid level in the tank in real time. It has high monitoring accuracy, which is beneficial for mixing equipment to perform accurate real-time liquid preparation. In addition, the liquid level sensor has good high temperature resistance and acid and alkali corrosion resistance, which is beneficial for mixing acid and alkali liquids.

[0021] Combination Figures 1 to 4 As shown, the liquid level sensor in this embodiment includes a liquid receiving part 10 and an electronic compartment 20. The liquid receiving part 10 is in direct contact with the liquid in the storage tank. The liquid receiving part 10 includes a plug 11, a float 12, a measuring rod 13, and a combined oil seal 14 arranged sequentially from bottom to top. The float 12 is mounted on the measuring rod 13 and moves along the length of the measuring rod 13. A movable magnetic ring 121 is provided inside the float 12. A waveguide wire 131 is provided inside the measuring rod 13. The surfaces of the plug 11, float 12, measuring rod 13, and combined oil seal 14 are all coated with a PFA coating. In this embodiment, the plug 11, float 12, measuring rod 13, and combined oil seal 14 will be in direct contact with the liquid in the storage tank. Therefore, the surfaces of the plug 11, float 12, measuring rod 13, and combined oil seal 14 are coated with a PFA coating. The PFA coating has excellent high temperature resistance and acid and alkali corrosion resistance, which can effectively prevent corrosion of the liquid level sensor.

[0022] In this embodiment, the electronic compartment 20 is installed above the combined oil pipe 14. An integrated circuit board 21 is provided inside the electronic compartment 20. The integrated circuit board 21 generates a current excitation pulse to move the movable magnetic ring 121 along the length direction of the measuring rod 13. When the integrated circuit board 21 generates a current excitation pulse, this current excitation pulse generates a magnetic field and moves along the waveguide wire 131. The movable magnetic ring 121 in the measuring rod 13 will also generate a magnetic field. When the magnetic field generated by the current excitation pulse intersects with the magnetic field generated by the movable magnetic ring 121, the waveguide will generate a magnetostrictive effect, that is, generate a strain pulse. This pulse is transmitted back from the waveguide wire 131 at a fixed speed and is detected by the addressing element of the integrated circuit board 21. By measuring the time between the current pulse and the variable pulse, the position of the movable magnetic ring 121 can be accurately determined, and then the position signal can be output.

[0023] Furthermore, the electronic compartment 20 of this embodiment is provided with a cable connector 30, which connects the integrated circuit board 21 to the outside to supply power to the integrated circuit board 21 and transmit signals to the outside. When the position of the moving magnetic ring 121 is determined, the position signal is output to the outside through the cable connector 30 so that the outside can perform signal processing.

[0024] Combination Figure 1 and Figure 3 As shown, the electronic chamber 20 in this embodiment is provided with an air inlet 40 and an air outlet 50. High-pressure air is introduced into the electronic chamber 20 through the air inlet 40, and high-pressure air is discharged from the electronic chamber 20 through the air outlet 50. High-pressure air of 0.1-0.2MPa is introduced through the air inlet 40 and discharged through the air outlet 50 to maintain the ambient temperature inside the electronic chamber 20.

[0025] In this embodiment, the combined oil ring 14 is a semi-circular structure. The combined oil ring 14 is fixed inside the liquid storage tank to install the liquid level sensor inside the liquid storage tank. In this embodiment, the combined oil ring 14 is used as a fixing component to stably install the liquid level sensor inside the liquid storage tank so that the liquid level sensor can monitor the liquid level inside the liquid storage tank in real time.

[0026] In this embodiment, the liquid level sensor is installed in the storage tank using a combination oil ring 14 to monitor the liquid level in real time. This allows the subsequent mixing equipment to perform precise real-time liquid dispensing operations in the storage tank. The working principle of the liquid level sensor is as follows: When the integrated circuit board 21 generates a current excitation pulse, this current excitation pulse generates a magnetic field and moves along the waveguide wire 131. At the same time, the moving magnetic ring 121 in the measuring rod 13 also generates a magnetic field. When the magnetic field generated by the current excitation pulse intersects with the magnetic field generated by the moving magnetic ring 121, the waveguide will generate a magnetostrictive effect, that is, generate a strain pulse. This pulse is transmitted back from the waveguide wire 131 at a fixed speed and is detected by the measuring element of the integrated circuit board 21. By measuring the time between the current pulse and the variable pulse, the position of the moving magnetic ring 121 can be accurately determined, and then a position signal is output. At this time, the position of the moving magnetic ring 121 is the liquid level of the storage tank, thus realizing the real-time monitoring of the liquid level in the storage tank.

[0027] While the present invention has been described above with reference to various embodiments, it should be understood that many changes and modifications can be made without departing from the scope of the present invention. That is, the methods, systems, or devices discussed above are merely examples. Various configurations can be appropriately omitted, substituted, or added to various processes or components. For example, in alternative configurations, methods can be performed in a different order than described, and / or various stages can be added, omitted, and / or combined. Moreover, features described with respect to certain configurations can be combined in various other configurations. Different aspects and elements of the configuration can be combined in a similar manner. Furthermore, as technology develops, many elements are merely examples and do not limit the scope of this disclosure or the claims.

[0028] Specific details are provided in the specification to offer a thorough understanding of exemplary configurations, including implementations. However, configurations can be practiced without these specific details; for example, well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary detail to avoid obscuring the configuration. This description provides only exemplary configurations and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes can be made to the function and arrangement of the elements without departing from the spirit or scope of this disclosure.

[0029] Furthermore, although each operation can be described as a sequential process, many operations can be executed in parallel or simultaneously. Additionally, the order of operations can be rearranged. A process may have additional steps. Moreover, examples of methods can be implemented using hardware, software, firmware, middleware, code, hardware description languages, or any combination thereof. When implemented in software, firmware, middleware, or code, the program code or code segments used to perform the necessary tasks can be stored in a non-transitory computer-readable medium such as a storage medium and executed by a processor.

[0030] In summary, the above detailed description is intended to be exemplary and not restrictive, and it should be understood that the claims (including all equivalents) are intended to define the spirit and scope of this invention. These embodiments should be understood as illustrative only and not as limiting the scope of protection of this invention. After reading the description of this invention, those skilled in the art can make various alterations or modifications to it, and these equivalent changes and modifications also fall within the scope defined by the claims of this invention.

Claims

1. A liquid level sensor for real-time monitoring of liquid level, installed inside a liquid storage tank, characterized in that, The liquid level sensor includes Liquid receiving part (10) is in direct contact with the liquid in the storage tank. The liquid receiving part (10) includes a plug (11), a float (12), a measuring rod (13), and a combination oil ring (14) arranged sequentially from bottom to top. The float (12) is installed on the measuring rod (13) and moves along the length of the measuring rod (13). A movable magnetic ring (121) is provided inside the float (12). A waveguide wire (131) is provided inside the measuring rod (13). The surfaces of the plug (11), float (12), measuring rod (13), and combination oil ring (14) are all coated with PFA coating. An electronic compartment (20) is installed above the combined oil nozzle (14). An integrated circuit board (21) is provided inside the electronic compartment (20). The integrated circuit board (21) generates current excitation pulses to move the movable magnetic ring (121) along the length direction of the measuring rod (13).

2. A liquid level sensor for real-time monitoring of liquid level according to claim 1, characterized in that, The electronic compartment (20) is provided with a cable connector (30) that connects the integrated circuit board (21) to the outside to supply power to the integrated circuit board (21) and transmit signals to the outside.

3. A liquid level sensor for real-time monitoring of liquid level according to claim 1, characterized in that, The electronic compartment (20) is provided with an air inlet (40) and an air outlet (50). High-pressure air is introduced into the electronic compartment (20) through the air inlet (40), and high-pressure air is discharged from the electronic compartment (20) through the air outlet (50).

4. A liquid level sensor for real-time monitoring of liquid level according to claim 1, characterized in that, The combined oil ring (14) is a semi-circular structure. The combined oil ring (14) is fixed inside the liquid storage tank so that the liquid level sensor can be installed inside the liquid storage tank.

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