Electrochemical seismic detector based on mechanical seal and packaging method thereof

Abstract

The invention discloses an electrochemical seismic detector based on mechanical seal and a packaging method thereof. The electrochemical seismic detector comprises a fixed ring, outer housings, elastic films and an electrode sensitive core, wherein the electrode sensitive core is arranged between two outer housings; the electrode sensitive core and the outer housings are sealed through flexible seal washers; the elastic films are arranged between each outer housing and the fixed ring so as to realize sealing between the fixed ring and the each outer housing; and the outer housings and the fixed ring are fixed in a mechanical manner. After the electrode sensitive core is manufactured by adopting MEMS (Micro-Electro-Mechanical Systems) processing technology, the electrode sensitive core is packaged in a small sealing member, then the small sealing member is sealed in a large outer housing, and finally the packaging of the whole detector is completed through reinforcement of screws. A cushion is placed between all hard contact surfaces; and during the reinforcement of the screws, the cushions are deformed so as to realize mechanical seal.

Description

technical field [0001] The invention relates to the technical field of seismic detection and sensor packaging, in particular to an electrochemical seismic geophone based on a mechanical seal and a packaging method thereof. Background technique [0002] The geophone is a kind of vibration sensor, which converts the measured vibration parameters (such as displacement, velocity, acceleration, etc.) into different signal forms (such as mechanical, electrical, optical signals, etc.) during the measurement process. [0003] The electrochemical geophone uses the electrolyte solution containing iodine and potassium iodide as the inertial body, and its sensitive element is an electrode sensitive core containing two pairs of electrodes. Each pair of electrodes in the sensitive core is composed of an anode and a cathode, and the two pairs of electrodes are distributed in the form of anode-cathode-cathode-anode. The sensitive core and electrolyte are encapsulated in a shell made of plex...

AI Technical Summary

Problems solved by technology

[0004] The electrode sensitive core of the traditional electrochemical detector is sintered in a ceramic disc, and the ceramic disc is sealed in the plexiglass shell with liquid silicone rubber. Due to the fluidity of the liquid glue, the electrode sensitive core may be blocked during the packaging process. The flow channel affects the performance of the device and the consistency between the devices; in addition, the liquid silicone rubber will absorb a large amount of iodine in the reaction solution after curing, resulting in a gradual decrease in device sensitivity or even failure

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