Ultrasonic transducer adapting to severe environment

Abstract

The ultrasonic transducer adapting to the severe environment comprises a shell, a matching layer and a ceramic chip installed on the matching layer, one end of the shell is open, the matching layer is fixed at the inner bottom of the shell, the ceramic chip is fixed on the upper surface of the matching layer, and the ceramic chip is fixed on the matching layer. The device is characterized in that a supporting piece used for centering and calibrating the ceramic chip is fixed on the matching layer; the supporting piece is filled with backing soft rubber to form a soft rubber layer, and a rubber pouring layer is arranged in the shell and above the backing soft rubber layer. According to the utility model, the housing is arranged, so that the ceramic chip is protected, the support member is arranged in the ceramic chip and integrated with the housing to form effective support, and the pressure resistance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to an ultrasonic transducer adapting to severe environment. BACKGROUND

[0002] Most of the matching layers of the existing conventional transducers are directly exposed for use, and the matching layer does not have good dirt resistance, corrosion resistance and pressure resistance due to its material properties, and dirt, corrosion and damage may occur in some special environments.

[0003] Some transducers are also coated with a plastic shell for protection, but due to the structure, the shell may deform under certain conditions (such as high pressure). SUMMARY

[0004] The utility model aims at the above problems existing in the prior art and provides an ultrasonic transducer adapting to severe environment, which has dirt resistance and corrosion resistance by setting a shell, protects the ceramic chip, and sets a support inside to form effective support with the shell as a whole to improve pressure resistance.

[0005] The utility model can be realized by the following technical scheme: an ultrasonic transducer adapting to severe environment, comprising a shell, a matching layer and a ceramic chip mounted on the matching layer, the shell is open at one end and the matching layer is fixed to the inner bottom of the shell, the ceramic chip is fixed to the upper surface of the matching layer, characterized in that:

[0006] A support for centering and aligning the ceramic chip is fixed to the matching layer;

[0007] A soft glue layer is filled with a back-up soft glue on the support, and a glue filling layer is arranged above the soft glue layer in the shell.

[0008] Further, the shell is cylindrical, and an inner recess is formed in the inner part of the shell and the position of the inner recess is higher than the position of the uppermost end of the support relative to the inner wall of the shell.

[0009] Further, a glue dividing line is arranged on the support.

[0010] Further, the support is cylindrical and a positioning hole for positioning the ceramic chip is formed in the bottom of the support.

[0011] Further, the height of the soft glue layer is slightly lower than the glue dividing line.

[0012] Further, the highest position of the glue filling layer is lower than the top surface of the shell, and the glue filling layer flows into the inner recess to form a boss.

[0013] Compared with the existing technology, the advantages of this application are: it provides a shell to make it resistant to dirt and corrosion, protecting the ceramic chip, and at the same time provides an internal support that is integrated with the shell to form an effective support and improve pressure resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Fig. 1 is a schematic diagram of the transducer;

[0015] Fig. 2 is a schematic cross-sectional view of a transducer;

[0016] Fig. 3 This is a cross-sectional diagram of the transducer from another perspective

[0017] In the figure, 1, outer shell; 2, matching layer; 3, ceramic chip; 4, support part; 41, positioning hole; 5, soft glue layer; 6, glue dividing line; 7, glue filling layer; 71, boss; 8, inner groove. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention.

[0019] like Figs. 1-3 As shown, an ultrasonic transducer adapted to harsh environments includes a housing 1, a matching layer 2, and a ceramic chip 3 mounted on the matching layer 2. The housing 1 is open at one end and the matching layer 2 is fixed to the bottom of the housing 1. The ceramic chip 3 is fixed to the upper surface of the matching layer 2. The housing 1 is characterized in that it is made of a material that is resistant to dirt and corrosion.

[0020] A support member 4 for centering and calibrating the ceramic chip 3 is fixed on the matching layer 2 ; the support member is made of a material with good strength.

[0021] The support member 4 is filled with backing soft glue to form a soft glue layer 5 , and a glue potting layer 7 is provided inside the shell 1 and above the backing soft glue layer 5 .

[0022] Furthermore, the shell 1 is cylindrical, and an inner groove 8 is opened inside the shell 1. The position of the inner groove 8 is higher than the position of the uppermost end of the support member 4 relative to the inner wall of the shell 1.

[0023] Furthermore, a glue dividing line 6 is provided on the support member 4. The glue dividing line 6 is used to indicate the highest height when the soft glue is filled.

[0024] Furthermore, the support member 4 is cylindrical and has a positioning hole 41 at the bottom for positioning the ceramic chip 3. The positioning hole 41 of the support member 4 positions the ceramic chip 3 to ensure that the ceramic chip 3 is centered on the matching layer 2.

[0025] Further, the height of the soft glue layer 5 is slightly lower than the glue dividing line 6.

[0026] Further, the highest position of the glue filling layer 7 is lower than the top surface of the shell 1, and the glue filling layer 7 flows into the inner groove 8 to form a boss 71. When the glue is filled, the glue flows into the inner groove 8 to solidify and form the boss 71, so that the connection between the internal parts is more compact, and the possibility of displacement of the whole due to pressure is eliminated.

[0027] First, the ceramic chip 3, the matching layer 2 and the bottom surface of the shell 1 are matched, the support 4 is provided with a positioning hole 41 for the ceramic chip 3 to be centrally arranged on the matching layer 2 for calibration, so as to ensure the centerness of the ceramic chip 3, and the ceramic chip 3 is placed on the matching layer 2 and cooperates with the shell 1 to resist the pressure from the outside. The support 4 is filled with a back soft glue below the glue dividing line 6 to form a soft glue layer 5, so as to ensure the performance of the transducer, and the support 4 is filled with a hard glue above the glue dividing line 6 to form a glue filling layer 7, and the inner groove enables the hard glue to flow into the inner groove, and the glue forms a boss 71 supported on the shell 1, so as to eliminate the possibility of displacement of the whole due to pressure, and the transducer is well protected and supported.

[0028] The above technical scheme of the utility model provides a solution significantly different from the prior art, and the parts not involved in the technical scheme of the application are the same as or can be realized by the prior art, and thus will not be described herein.

[0029] The technical scheme in the above embodiments has clearly and completely described the content of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, but not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

Claims

1. An ultrasonic transducer adapted for harsh environments, comprising a housing, a matching layer, and a ceramic chip mounted on the matching layer, wherein one end of the housing is open and the matching layer is fixed to the bottom of the housing, and the ceramic chip is fixed to the upper surface of the matching layer, characterized in that: A support member for centering and calibrating the ceramic chip is fixed on the matching layer; The support member is filled with backing soft glue to form a soft glue layer, and a glue filling layer is provided inside the shell and above the backing soft glue layer.

2. The ultrasonic transducer adapted to harsh environments according to claim 1, characterized in that: The shell is cylindrical, and an inner groove is provided inside the shell. The position of the inner groove is higher than the position of the uppermost end of the support member relative to the inner wall of the shell.

3. The ultrasonic transducer adapted to harsh environments according to claim 1, characterized in that: A glue dividing line is provided on the support member.

4. The ultrasonic transducer adapted to harsh environments according to claim 3, characterized in that: The support piece is cylindrical and has a positioning hole at the bottom for positioning the ceramic chip.

5. The ultrasonic transducer adapted to harsh environments according to claim 3, characterized in that: The height of the soft rubber layer is slightly lower than the glue dividing line.

6. The ultrasonic transducer adapted to harsh environments according to claim 2, characterized in that: The highest position of the glue pouring layer is lower than the top surface of the shell, and the glue pouring layer flows into the inner groove to form a boss.

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