Electrochemical test environment noise shielding device

Abstract

The invention belongs to the technical field of electrochemical test auxiliary equipment, and particularly relates to an electrochemical test environmental noise shielding device, which is characterized in that a box body is made of an outer layer formed by winding a thin copper pipe, a middle layer formed by compounding a high-permeability and high-conductivity material and an inner layer made of a corrosion-resistant sound insulation material, and the outer surface of the outer layer is coated with a functional noise elimination coating, so the device has correction prevention and noise elimination functions. The electromagnetic wave and electric wave interference of ultralow frequency band, low frequency band, middle frequency band and high frequency band can be shielded, the corrosion of a corrosive medium in a tested system in the box body is prevented, and an excellent electromagnetic field and noise signal shielding function is realized; the device is simple in structure, simple to manufacture and convenient to use, interference of electromagnetic field, sound, vibration and other signals outside a tested system on electrochemical testing is eliminated or weakened by adopting the high-permeability and high-conductivity material and the sound insulation material, and the requirements of observation in the electrochemical testing process and environment factor control of the tested system are met; and the precision of electrochemical test data of the small-current system is improved.

Description

Technical field: [0001] The invention belongs to the technical field of electrochemical testing auxiliary equipment, and in particular relates to an electrochemical testing environmental noise shielding device, which can shield the environmental noise when performing high-precision electrochemical testing in a small current system. Background technique: [0002] Electrochemical testing is to obtain the required electrode potential and current information by controlling the electrode reaction speed, and then obtain the characteristics of the metal corrosion process. The basic device used in electrochemical testing is three electrodes and two loops (three electrodes refer to the working electrode, auxiliary electrode and reference electrode; the two loops are the current control loop and the voltage control loop), and a certain current is applied to the working electrode through the auxiliary electrode to cause the electrode At the same time, the polarization degree of the ele...

AI Technical Summary

Problems solved by technology

The above shielding boxes can realize the shielding of electromagnetic field high-frequency signals, and all belong to the special device for the anti-signal interference test of electronic products. It is inconvenient to open holes for laying cables, and cannot be used for electrochemical tests.

Chinese patent 201821865287.4 discloses a shielding box suitable for electrochemical workstations, including a heat dissipation box and a cable box, and the outer sides of the heat dissipation box and the outer sides of the cable box are respectively provided with a fixing plate and a connecting plate The upper surfaces of the two groups of connecting plates are fixedly connected with cylinders, the lower surfaces of the two groups of fixed plates are fixedly connected with joints, the two groups of joints are respectively fixed and screwed to one end of the piston rods of the two groups of cylinders, and the inside of the heat dissipation box Three sets of axial flow fans are fixed on one side, and through holes are equidistantly arranged on the covering part of the installation surface of the three sets of axial flow fans inside the heat dissipation box, and grooves are equidistantly opened on the inner lower surface of the cable box. Above the groove, fixed blocks are fixed on both sides inside the cable box. A hinge is installed on the upper surface of one side of the fixed block, and a lock is fixed on the upper surface of the fixed block on the other side. One side of the hinge is fixedly hinged. The cover plate is fixed with a locking piece on the side away from the hinge; it solves the problem of heat dissipation and cable laying, and is used for environmental signal interference during the electrochemical synthesis reaction process. It also includes three sets of axial flow fans for heat dissipation. However, it is not suitable for small current test systems, and may even cause new interference to the small current test environment

[0005] To sum up, the existing shielding devices are all closed space boxes formed by metal conductors, which mainly shield high-frequency electromagnetic field signals, and cannot shield long-wavelength acoustic signals in low-frequency regions, and cannot meet the needs of low-current and high-precision electric fields. Chemical testing requirements; secondly, it only eliminates or weakens the environmental noise outside the data acquisition system, and is mainly used for anti-interference testing of electronic equipment such as radios. to fully shielded

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