CN211626622U

CN211626622U - Ultrasonic level meter

Info

Publication number: CN211626622U
Application number: CN202020461555.7U
Authority: CN
Inventors: 薛志勇
Original assignee: Beijing Precision Instrument Co ltd
Current assignee: Beijing Precision Instrument Co ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2020-10-02
Anticipated expiration: 2030-04-01

Abstract

The utility model relates to a measuring equipment technical field, concretely relates to ultrasonic wave level meter, include: the first shell is internally provided with a display structure and a power supply structure which are connected with each other; the second shell is arranged along the axial direction of the first shell, and a driving mechanism connected with the power supply structure is arranged in the second shell; and the arc-shaped structure is arranged at the bottom of the second shell. The utility model provides an accurate ultrasonic wave level meter of measuring result.

Description

Ultrasonic level meter

Technical Field

The utility model relates to a measuring equipment technical field, concretely relates to ultrasonic wave level meter.

Background

The working principle of the ultrasonic liquid level meter is that an ultrasonic pulse is sent by a transducer, the ultrasonic pulse is reflected when encountering the surface of a measured medium, part of reflected echoes are received by the transducer, the reflected echoes are converted into electric signals through a piezoelectric crystal or a magnetostrictive device, and the distance from a sensor to the surface of the measured liquid is calculated according to the time between the emission and the reception of sound waves. Because of adopting non-contact measurement, the measured medium is almost unlimited, and can be widely used for measuring the height of various liquid and solid materials. The ultrasonic water level meter adopts an advanced microprocessor, has a unique echo processing technology, has a false echo storage function, is internally provided with temperature compensation, and has the characteristics of small beam angle, simple debugging and calibration and the like.

The ultrasonic position finding technology has many advantages, it not only can locate position and continuously, but also can conveniently provide the signal required by remote measurement or remote control. Compared with the radioactive position measuring technology, the ultrasonic technology does not need protection, and compared with the laser distance measuring technology, the ultrasonic technology has the advantages of simplicity and economy, and meanwhile, the ultrasonic technology generally does not need moving parts, so that the ultrasonic position measuring technology is correspondingly convenient to install and maintain.

However, when the ultrasonic level meter in the prior art is applied to a working environment in which water vapor condenses, the water vapor easily condenses at the bottom of the ultrasonic level meter and forms water drops, and when the condensed water drops reach a certain thickness, the measurement accuracy of the ultrasonic level meter is affected, and the accuracy of the measurement result is affected.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the prior art at ultrasonic level meter in the operational environment that has vapor to condense, the bottom has vapor to condense into the drop of water, influences the measurement accuracy of ultrasonic level meter and the defect of measuring result accuracy to an ultrasonic level meter that measuring result is accurate is provided.

In order to solve the technical problem, the utility model provides an ultrasonic wave level meter, include:

the first shell is provided with a display structure and a power supply structure which are connected with each other;

the second shell is arranged along the axial direction of the first shell, and a driving mechanism connected with the power supply structure is arranged in the second shell;

and the arc-shaped structure is arranged at the bottom of the second shell.

Further, the bending direction of the arc-shaped structure faces the first shell.

Further, still including locating the connecting piece between first casing and the second casing.

Further, the second housing includes:

the connecting part is rotatably connected with the connecting piece;

the base body part is a cylinder with an opening at one end, and the arc-shaped structure is formed on the bottom cambered surface of the base body part.

Further, still include connection structure, connection structure includes:

a central passage formed on the connector in an axial direction of the connector;

and the bidirectional plug is arranged in the central channel of the connecting piece, one end of the bidirectional plug is connected with the driving mechanism, and the other end of the bidirectional plug is connected with the power supply structure.

Further, the power supply structure includes:

the power panel is arranged in the first shell;

one end of the first conductive piece is connected with the power panel, and the other end of the first conductive piece is connected with the bidirectional plug to provide power for the driving mechanism;

and one end of the second conductive piece is connected with the power panel, and the other end of the second conductive piece is connected with the display structure to provide power for the display structure.

Furthermore, a through hole for the first conductive piece to extend out is formed in the bottom of the first shell, and the through hole and the central channel are located on the same axis.

Further, the sealing structure is arranged between the first shell and the connecting piece and between the connecting piece and the second shell.

Further, a matching material and silica gel are arranged in the second shell.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a pair of ultrasonic wave level meter, include: the first shell is internally provided with a display structure and a power supply structure which are connected with each other; the second shell is arranged along the axial direction of the first shell, and a driving mechanism connected with the power supply structure is arranged in the second shell; and the arc-shaped structure is arranged at the bottom of the second shell. The arc-shaped structure is arranged at the bottom of the second shell, so that when the ultrasonic level meter is applied to a working environment with water vapor condensed, water drops condensed at the bottom of the level meter directly and automatically drop through the arc-shaped structure, the measuring accuracy of the ultrasonic level meter is not affected, and normal measuring work can be performed.

2. The utility model provides a pair of ultrasonic wave level meter, the crooked direction orientation of arcuation structure the connecting piece to be convenient for condense at the automatic drippage of transducer bottom, avoid condensing in the bottom of transducer, and then improve measuring result's accuracy.

3. The utility model provides a pair of ultrasonic wave level meter the bottom of first casing is equipped with and is used for the through-hole that first electrically conductive piece stretches out, just the through-hole with center channel be located on the same axis. The first conductive piece penetrates out of the bottom of the inner shell through the through hole and is inserted into the bidirectional plug, so that the power supply structure is connected with the driving mechanism. The through hole and the central channel are arranged on the same axis, so that the connection precision of the first conductive piece and the bidirectional plug is ensured, the loss of an electric signal in a transmission process is reduced, and the accuracy of a measuring result is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a cross-sectional view of an ultrasonic level gauge provided by the present invention;

FIG. 2 is a schematic structural view of an ultrasonic level meter according to the present invention;

FIG. 3 is a cross-sectional view of the second housing mated with the connector;

FIG. 4 is a schematic structural diagram of the second housing;

description of reference numerals:

1-a piezoelectric crystal; 2-shielding aluminum foil; 3-matching the material; 4-a drive plate; 5-silica gel; 6-a second shell; 61-a connecting portion; 62-a base portion; 63-arc like structure; 7-connecting wires; 8-a two-way plug; 9-a connector; 91-a central channel; 10-a sealing structure; 11-a first conductive member; 12-an inner shell; 13-a power panel; 14-a control panel; 15-a first housing; 16-a second electrically conductive member; 17-display structure; 18-a cover body;

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1-4, the present invention provides an ultrasonic level meter, which comprises a first casing 15, a second casing 6, a connecting member 9, a piezoelectric crystal 1, a power structure, a display structure 17 and a driving mechanism.

A first housing 15 provided with a display structure 17 and a power supply structure connected to each other;

the second shell 6 is arranged along the axial direction of the first shell 15, and a driving mechanism connected with the power supply structure is arranged in the second shell 6;

and an arc-shaped structure 63 arranged at the bottom of the second shell 6.

First casing 15 and second casing 6 that set gradually along the axial direction of first casing 15 show that structure 17 sets up at the top of first casing 15, and actuating mechanism sets up in the inside of first casing 15 be equipped with actuating mechanism in the second casing 6, actuating mechanism and power structural connection. By arranging the arc-shaped structure 63 at the bottom of the second shell 6, when the ultrasonic level meter is applied to a working environment with water vapor condensed, water drops condensed at the bottom of the level meter directly and automatically drop through the arc-shaped structure 63, so that the measurement accuracy of the ultrasonic level meter is not affected, and normal measurement work can be performed.

In this embodiment, the curved direction of the arc-shaped structure 63 faces the first housing 15, so that water drops condensed at the bottom of the level gauge can automatically drop, the condensation at the bottom of the level gauge is avoided, and the accuracy of the measuring structure is improved.

The thickness of the arc-shaped structure 63 is not too thin or too thick; if the thickness of the arc-shaped structure 63 is too thin, the processing may be difficult; if the thickness of the arc-shaped structure 63 is too thick, the accuracy of the measurement accuracy will be affected. The thickness of the arc-shaped structure 63 can be set according to actual conditions.

In this embodiment, a connecting member 9 is further included between the first housing 15 and the second housing 6. The connecting piece 9 mainly plays a role in connecting the first shell 15 and the second shell 6, the connecting mode is in rotating connection, the connecting piece 9 and the first shell 15, the connecting piece 9 and the second shell 6 are convenient to disassemble and assemble, parts in the first shell 15 and the second shell 6 are convenient to replace, and meanwhile, the connecting mode also has certain connecting stability.

An inner housing 12 is provided inside the first housing 15, and a power supply structure is provided inside the inner housing 12 and is fixedly connected to the inner housing 12, while a control board 14 is provided inside the inner housing 12.

As shown in fig. 4, in the present embodiment, the second housing 6 includes a connecting portion 61 and a base portion 62;

the connecting part 61 is rotatably connected with the connecting piece 9; that is, an external thread is provided on the outer circumferential wall of the connecting portion 61, and an internal thread is provided on the inner wall of the connecting member 9, thereby achieving connection of the second housing 6 and the connecting member 9.

The base part 62 is a cylinder with one open end, and the arc-shaped structure 63 is molded on the bottom arc surface of the base part 62. The second housing 6 is an integrally molded component.

As shown in fig. 1-3, further comprising a connection structure comprising a central channel 91 and a bi-directional plug 8;

a central passage 91 formed on the connector 9 in the axial direction of the connector 9;

and the bidirectional plug 8 is arranged in the central channel 91, one end of the bidirectional plug 8 is connected with the driving mechanism, and the other end of the bidirectional plug is connected with the power supply structure, so that the connection between the driving mechanism and the power supply structure is realized, and the power supply structure can provide power for the driving mechanism.

As shown in fig. 1 and 3, the power supply structure includes a power supply board 13, a first conductive member 11, and a second conductive member 16;

a power supply board 13 disposed in the inner case 12 and fixed in the inner case 12 to prevent the power supply board 13 from moving in the inner case 12;

and the first conductive piece 11 is fixedly connected with the power panel 13, and the other end of the first conductive piece is connected with the bidirectional plug 8 to provide power for the driving mechanism. In this embodiment, the first conductive member 11 is a 90 ° bent pin, so as to facilitate the connection of the power board 13 and the bidirectional plug 8. The structure of the first conductive member 11 is not particularly limited, and may have other shapes.

A through hole for the first conductive member 11 to extend out is formed at the bottom of the inner housing 12, and the through hole and the central channel 91 are located on the same axis. The curved needle passes through the passage and penetrates out of the bottom of the inner shell 12, and is inserted into the bidirectional plug 8, so that the power supply structure and the driving mechanism are connected.

In the embodiment, the cover 18 is disposed on the first housing 15, the first housing 15 is screwed to the cover 18, and the display structure 17 is disposed on the top of the first housing 15, so that after the measurement result of the level gauge is obtained, the cover 18 is opened, and the value can be directly read through the display structure 17.

And a second conductive member 16 having one end connected to the power board 13 and the other end connected to the display structure 17 for providing power to the display structure 17. Wherein, the display structure 17 is an electronic display screen; the second conductive member 16 is a pogo pin fixed on the inner case 12, mainly for connecting the power board 13 with the display structure 17.

In the embodiment, the driving mechanism comprises a connecting wire 7 and a driving plate 4, wherein the driving plate 4 is arranged inside the first shell 15, one end of the connecting wire 7 is electrically connected with the driving plate 4, and the other end is connected with the bidirectional plug 8, so that the driving mechanism is structurally connected with the power supply.

A piezoelectric crystal 1 is disposed at the bottom of the second housing 6, and in the present embodiment, the piezoelectric crystal 1 is a piezoelectric ceramic. Meanwhile, the second shell 6 is also internally provided with a matching material 3 and silica gel 5. Wherein, the matching material 3 is polyurethane filler.

And a shielding aluminum foil 2 is coated on the outer peripheral wall of the piezoelectric crystal 1, and the shielding aluminum foil 2 is used for preventing contact between the piezoelectric ceramic and the matching material 3, thereby influencing the measurement structure.

As shown in fig. 1, the sealing structure 10 is further provided between the first housing 15 and the connector 9, between the connector 9 and the second housing 6, and between the first housing 15 and the cover 18, respectively. In this embodiment, the seal structure 10 is an O-ring seal. The outer peripheral wall of the connecting piece 9 is respectively provided with 3 grooves, the O-shaped sealing ring is embedded in the grooves, the first shell 15 is connected with the connecting piece 9, the second shell 6 is also connected with the connecting piece 9, the top of the first shell 15 is provided with 1 groove, and the cover body 18 is connected with the first shell 15; thus, water vapor is prevented from entering the level gauge from the connection of the connecting piece 9 with the first housing 15, the second housing 6 and the cover 18, and affecting the measurement result.

The outer peripheral wall of the piezoelectric crystal 1 is coated with a shielding aluminum foil 2, and the shielding aluminum foil 2 is used for preventing contact between the piezoelectric ceramic and the matching material 3, thereby influencing the measurement structure.

The specific working process is as follows: when the measurement is carried out, power supply voltage is applied to two poles of the piezoelectric crystal 1 arranged at the bottom of the second shell 6, the piezoelectric crystal 1 generates tiny deformation, namely, electric energy is converted into mechanical energy, so that ultrasonic waves are generated, the ultrasonic waves are propagated through air, the ultrasonic waves are reflected when encountering the surface of a measured medium, part of reflection echoes are reflected to the piezoelectric crystal 1, the piezoelectric crystal 1 can generate electric charges, the mechanical energy is converted into the electric energy, the electric energy is transmitted to the control panel 14 through the driving board 4 and the connecting wire 7, the bidirectional plug 8 and the first conductive piece 11, the data can be analyzed and calculated by a single chip on the control panel 14, the calculated data is output to the display structure 17 through the second conductive piece 16, and therefore the transmission of signals is completed.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. An ultrasonic level gauge, comprising:

a first housing (15) provided with a display structure (17) and a power supply structure connected to each other;

the second shell (6) is arranged along the axial direction of the first shell (15), and a driving mechanism connected with the power supply structure is arranged in the second shell (6);

and the arc-shaped structure (63) is arranged at the bottom of the second shell (6).

2. The ultrasonic level gauge according to claim 1, wherein the arc-like structure (63) is curved in a direction towards the first housing (15).

3. The ultrasonic level gauge according to claim 2, further comprising a connection (9) provided between the first housing (15) and the second housing (6).

4. The ultrasonic level gauge of claim 3, wherein the second housing (6) comprises:

a connecting part (61) which is rotatably connected with the connecting piece (9);

the base body part (62) is a cylinder with one open end, and the arc-shaped structure (63) is molded on the bottom cambered surface of the base body part (62).

5. The ultrasonic level gauge of claim 4, further comprising a connecting structure, the connecting structure comprising:

a central channel (91) formed on the connector (9) in the axial direction of the connector (9);

and the bidirectional plug (8) is arranged in the central channel (91) of the connecting piece (9), one end of the bidirectional plug (8) is connected with the driving mechanism, and the other end of the bidirectional plug is connected with the power structure.

6. The ultrasonic level gauge of claim 5, wherein the power supply structure comprises:

a power panel (13) disposed within the first housing (15);

one end of the first conductive piece (11) is connected with the power panel (13), and the other end of the first conductive piece is connected with the bidirectional plug (8) to provide power for the driving mechanism;

and one end of the second conductive piece (16) is connected with the power panel (13), and the other end of the second conductive piece is connected with the display structure (17) to provide power for the display structure (17).

7. The ultrasonic level gauge of claim 6, wherein a through hole for the first conducting member (11) to protrude is provided at the bottom of the first housing (15) and is located on the same axis as the central channel (91).

8. The ultrasonic level gauge of claim 3, further comprising sealing structures (10) provided between the first housing (15) and the connecting member (9) and between the connecting member (9) and the second housing (6), respectively.

9. An ultrasonic level gauge according to any one of claims 4-8, characterized in that a matching material (3) and a silicon gel (5) are also provided within the second housing (6).