CN216206858U

CN216206858U - Liquid level sensor

Info

Publication number: CN216206858U
Application number: CN202122730327.2U
Authority: CN
Inventors: 高小飞
Original assignee: Suzhou Dean Electronics Co ltd
Current assignee: Suzhou Dean Electronics Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-04-05
Anticipated expiration: 2031-11-09

Abstract

The utility model discloses a liquid level sensor, which comprises a measuring conduit, wherein a measuring element is arranged on the inner wall of the measuring conduit, a guide rod is arranged on the inner side of the measuring conduit, a magnetic floater is sleeved on the guide rod and is in clearance fit with the inner wall of the measuring conduit, a first port communicated with the inside of the measuring conduit is arranged at the position, close to the upper end, of the measuring conduit, a second port communicated with the inside of the measuring conduit is arranged at the position, close to the lower end, of the measuring conduit, and a movable cavity is arranged on the inner side of the first port. According to the utility model, the measuring conduit is arranged in a region to be measured, when turbulence disturbance occurs to the measured liquid, the fluid passes through the resting block of the three-dimensional honeycomb network structure on the inner side of the second port to convert the turbulent layer into the laminar layer, and meanwhile, the liquid level in the measuring conduit is limited to be rapidly increased or decreased due to rapid inrush of the fluid, so that the liquid level of the measuring conduit is kept relatively stable, and the measuring precision under the condition of turbulence is realized.

Description

Liquid level sensor

Technical Field

The utility model relates to the technical field of sensors, in particular to a liquid level sensor.

Background

A level sensor is a device for monitoring, maintaining and measuring the level of liquids and even solids, which converts sensed data into electrical signals upon detection of the liquid level. The traditional floating ball type liquid level sensor utilizes a magnetic floater floating on the liquid level to move up and down, and a measuring element arranged in a measuring conduit converts a measured liquid level signal into a resistance signal in direct proportion to the liquid level change under the external magnetic action of the magnetic floater, so that the horizontal height of the liquid level is measured. However, in practical measurement, the magnetic floater is extremely easily affected by disturbance of fluid turbulence, so that the magnetic floater rapidly changes up and down to influence the measurement stability.

Disclosure of Invention

The utility model aims to provide a liquid level sensor to solve the technical problem that a magnetic floater is easily disturbed and influenced by fluid turbulence, so that the magnetic floater is rapidly changed up and down to influence the measurement stability.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a liquid level sensor, includes the measuring catheter, be equipped with measuring element on the inner wall of measuring catheter, the measuring catheter inboard is equipped with the guide arm, the cover is equipped with the magnetism float on the guide arm, the inner wall clearance fit of magnetism float and measuring catheter, the measuring catheter is close to upper end department and is equipped with the first port with the inside intercommunication of measuring catheter, is close to lower extreme department and is equipped with the second port with the inside intercommunication of measuring catheter, the inboard of first port is equipped with movable cavity, be equipped with the cock body of spherical structure that can live in the activity cavity, the second port inboard is equipped with three-dimensional honeycomb network structure's rest piece.

Furthermore, a box body is arranged at the top end of the measuring catheter, and an electronic unit is arranged inside the box body.

Furthermore, the cross section of the measuring element is arc-shaped, and the length of the measuring element is greater than that of the measuring cavity in the measuring guide pipe.

Further, the plug body is a solid sphere, and the diameter of the plug body is larger than the inner diameter of the first port.

Further, the magnetic floater is of a sheet structure.

Furthermore, the upper part and the lower part of one side of the measuring guide pipe are both provided with mounting connecting pieces, and the mounting connecting pieces are of I-shaped structures.

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

according to the utility model, the measuring conduit is arranged in a region to be measured, when turbulence disturbance occurs to the measured liquid, the fluid passes through the resting block of the three-dimensional honeycomb network structure on the inner side of the second port to convert the turbulent layer into the laminar layer, and meanwhile, the liquid level in the measuring conduit is limited to be rapidly increased or decreased due to rapid inrush of the fluid, so that the liquid level of the measuring conduit is kept relatively stable, and the measuring precision under the condition of turbulence is realized.

Drawings

FIG. 1 is a schematic diagram of an overall structure of a liquid level sensor;

FIG. 2 is a side view of a liquid level sensor;

fig. 3 is a schematic cross-sectional view of a liquid level sensor.

In the figure: 1. a measurement catheter; 2. a measuring element; 3. a guide bar; 4. a magnetic float; 5. a first port; 6. a second port; 7. a movable cavity; 8. a plug body; 9. a resting block; 10. a box body; 11. and (5) installing a connecting piece.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides the following technical solutions:

the utility model provides a liquid level sensor, including measuring pipe 1, be equipped with measuring element 2 on measuring pipe 1's the inner wall, measuring pipe 1 inboard is equipped with guide arm 3, the cover is equipped with magnetic float 4 on the guide arm 3, magnetic float 4 and measuring pipe 1's inner wall clearance fit, measuring pipe 1 is close to upper end department and is equipped with the first port 5 with measuring pipe 1 inside intercommunication, be close to lower extreme department and be equipped with the second port 6 with measuring pipe 1 inside intercommunication, the inboard of first port 5 is equipped with movable cavity 7, be equipped with the plug body 8 of spherical structure that can invigorate in the

movable cavity

7, 6 inboards of second port are equipped with three-dimensional honeycomb network structure's flat piece 9.

The measuring guide pipe 1 is installed in a region to be measured, when turbulence disturbance occurs to the measured liquid, the fluid passes through the three-dimensional honeycomb net-shaped structure resting block 9 on the inner side of the second port 6 to convert a turbulent layer into a laminar layer, meanwhile, the liquid level in the measuring guide pipe 1 caused by the rapid inflow of the fluid is limited to rapidly rise or fall, the liquid level of the measuring guide pipe 1 is further kept relatively stable, and the measuring precision under the condition of turbulence is realized.

In one embodiment, the top end of the measuring catheter 1 is provided with a box 10, and the box 10 is internally provided with an electronic unit for detecting the measuring signal and converting the measuring signal for identification.

The cross section of the measuring element 2 is arc-shaped, the length of the measuring element 2 is greater than that of a measuring cavity in the measuring guide pipe 1, the first port 5 and the second port 6 can be avoided due to the arc-shaped structure, interference between the measuring element and the first port 5 and interference between the measuring element and the second port 6 are avoided, the measuring accuracy can be guaranteed as far as possible, and the length of the measuring element 2 can meet the requirement for measuring any position of the magnetic floater 4.

The cock body 8 is solid spheroid, and the diameter of cock body 8 is greater than the internal diameter of first port 5, and when the speed that the fluid gushed into in the measuring tube 1 was too fast, can promote cock body 8 to the one end removal of activity cavity 7, then blocks up the inside passageway of first port 5, then realizes the suppression to quick feed liquor, treats the flow rate and slows down the back, and cock body 8 resets again and realizes opening of first port 5.

The magnetic floater 4 is of a sheet structure, so that the whole magnetic floater 4 floats on the liquid level, the contact area between the magnetic floater 4 and the inner wall of the measuring conduit 1 is reduced, and the measuring precision is improved.

The upper part and the lower part of one side of the measuring guide pipe 1 are respectively provided with an installing connecting piece 11, the installing connecting pieces 11 are of I-shaped structures, and the installing connecting pieces 11 can stably fix the measuring guide pipe 1 so that the measuring guide pipe 1 is not influenced by turbulence.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which includes the appended claims and their equivalents.

Claims

1. The utility model provides a liquid level sensor, its characterized in that, includes measuring catheter (1), be equipped with measuring element (2) on the inner wall of measuring catheter (1), measuring catheter (1) inboard is equipped with guide arm (3), the cover is equipped with magnetic float (4) on guide arm (3), magnetic float (4) and the inner wall clearance fit of measuring catheter (1), measuring catheter (1) is close to upper end department and is equipped with first port (5) with measuring catheter (1) inside intercommunication, is close to lower extreme department and is equipped with second port (6) with measuring catheter (1) inside intercommunication, the inboard of first port (5) is equipped with movable cavity (7), be equipped with plug body (8) of spherical structure that can live in movable cavity (7), second port (6) inboard is equipped with three-dimensional honeycomb network structure's flat piece (9).

2. A liquid level sensor as claimed in claim 1, wherein: the top end of the measuring catheter (1) is provided with a box body (10), and an electronic unit is arranged inside the box body (10).

3. A liquid level sensor as claimed in claim 1, wherein: the cross section of the measuring element (2) is arc-shaped, and the length of the measuring element (2) is greater than that of a measuring cavity in the measuring guide pipe (1).

4. A liquid level sensor as claimed in claim 1, wherein: the plug body (8) is a solid sphere, and the diameter of the plug body (8) is larger than the inner diameter of the first port (5).

5. A liquid level sensor as claimed in claim 1, wherein: the magnetic floater (4) is of a sheet structure.

6. A liquid level sensor as claimed in claim 1, wherein: the upper portion and the lower portion of one side of the measuring guide pipe (1) are provided with mounting connecting pieces (11), and the mounting connecting pieces (11) are of I-shaped structures.