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Non-welding type piezoelectric vibrator connecting device and ultrasonic flow detection device adopting same

A technology for piezoelectric vibrators and connecting devices, which is applied in the directions of measuring devices, measuring flow/mass flow, liquid/fluid solid measurement, etc. It can solve problems such as difficult replacement of piezoelectric vibrators, achieve good contact contact, improve economy and Environmentally friendly and easy to install

Active Publication Date: 2021-10-29
ZHEJIANG CHEER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, if the piezoelectric vibrator is damaged during use, it will be difficult to replace the piezoelectric vibrator installed by welding

Method used

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  • Non-welding type piezoelectric vibrator connecting device and ultrasonic flow detection device adopting same
  • Non-welding type piezoelectric vibrator connecting device and ultrasonic flow detection device adopting same
  • Non-welding type piezoelectric vibrator connecting device and ultrasonic flow detection device adopting same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] refer to Figure 5-8, this embodiment provides a non-welded piezoelectric vibrator connection device, including a screw cap 8, a sleeve 12, and a piezoelectric vibrator seat 14;

[0048] The screw cap 8 is provided with a screw cap inner cavity 81, and the screw cap inner cavity 81 is provided with a screw cap inner cavity stepped surface 82, and one end of the sleeve 12 is inserted into the screw cap inner cavity 81 and is offset against the screw cap inner cavity stepped surface 82 , the other end of the casing 12 is fixedly connected to the piezoelectric vibrator seat 14;

[0049] The piezoelectric vibrator base 14 is provided with an annular cavity 140, which is used for embedded installation of the piezoelectric vibrator 100, and the annular cavity 140 is provided with a stepped surface 143 of the annular cavity, through which the stepped surface 143 of the annular cavity is offset against the piezoelectric vibrator 100. Limiting the piezoelectric vibrator 100;

...

Embodiment 2

[0065] refer to Figure 9 , this embodiment provides an ultrasonic flow detection device, including the non-welded piezoelectric vibrator connection device described in Embodiment 1, and also includes a sensor housing 120, the sensor housing 120 has a hollow flow path for the fluid medium circulation, the two sides of the sensor housing 120 are oppositely provided with a first installation pipe 123 and a second installation pipe 124, and a non-welded piezoelectric vibrator connection device is respectively installed in the first installation pipe 123 and the second installation pipe 124; The piezoelectric vibrator connection device presses the piezoelectric vibrator 100 on the wall of the sensor housing 120, and the coupling agent is coated between the piezoelectric vibrator 100 and the wall of the sensor housing 120.

[0066] Specifically, external threads are provided on the outside of the screw cap 8, and internal threads matching the external threads are provided in the fi...

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Abstract

The invention discloses a non-welding type piezoelectric vibrator connecting device and an ultrasonic flow detection device adopting the non-welding type piezoelectric vibrator connecting device. The non-welding type piezoelectric vibrator connecting device comprises a turncap, a sleeve and a piezoelectric vibrator seat. A turncap inner cavity is formed in the turncap, a turncap inner cavity step surface is arranged in the turncap inner cavity, one end of the sleeve is inserted into the turncap inner cavity and abuts against the turncap inner cavity step surface, and the other end of the sleeve is fixedly connected with the piezoelectric vibrator seat; an annular cavity is arranged in the piezoelectric vibrator seat, the annular cavity is used for embedding and installing a piezoelectric vibrator, and an annular cavity step surface for limiting the piezoelectric vibrator is arranged in the annular cavity; a first wire hole and a second wire hole which are communicated with the annular cavity are formed in the side walls of the two sides of the piezoelectric vibrator seat respectively. and a first signal wire and a second signal wire are electrically connected with two electrodes of the piezoelectric vibrator through the first wire hole and the second wire hole respectively. According to the invention, the signal wires are connected with the piezoelectric vibrator electrodes in a crimping manner, so that the influence ofhigh welding temperature and welding spot consistency on the working characteristics of the piezoelectric vibrator is avoided; and a piezoelectric vibrator can be replaced more conveniently when being damaged.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic flow meters, and in particular relates to a non-welded piezoelectric vibrator connection device and an ultrasonic flow detection device using the same. Background technique [0002] The ultrasonic flow sensor measures the flow of the liquid medium in the pipeline through a non-contact method, which has little influence on the flow and cleanliness of the liquid medium, and the measurement is accurate and fast. It is especially suitable for applications requiring high measurement accuracy and cleanliness such as the semiconductor industry, and is widely used It is widely used in semiconductor equipment such as secondary distribution system, CDS system, immersion system, glue development equipment and cleaning equipment. [0003] A measurement principle of ultrasonic flow sensor such as figure 1 As shown, the piezoelectric vibrators P are installed on both sides of the measuring tube in pairs, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/66
CPCG01F1/66
Inventor 徐安察方泽华赵楠楠陈文昱付婧媛
Owner ZHEJIANG CHEER TECH CO LTD
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