Abrasion monitoring instrument of digital displaying bearing

Abstract

The invention discloses an abrasion monitoring instrument of a digital displaying bearing. The instrument comprises a housing, wherein a phase sequence alarming indicator light, an abrasion state indicator light and an abrasion loss displaying area are arranged on the housing; an integrated circuit is arranged in the housing and used for directly converting G1 and G2 AC signals guided out by a motor into digital signals; the integrated circuit comprises a main control circuit, a display circuit, a phase sequence indicating circuit and a power input and current output circuit. With the adoptionof the abrasion monitoring instrument of the digital displaying bearing, the radial abrasion of a shield pump bearing can be monitored in real time; the instrument is applicable to on-site inspectionand monitoring, and the working condition of the shield pump bearing can be remotely monitored through a computer; in case of abnormality or fault in the shield pump bearing, alarming can be immediately carried out through a DCS system or a vehicle can be immediately automatically stopped, thus equipment accidents such as burnout of a shield pump can be prevented, and as a result, the working safety and the reliability of the shield pump can be improved.

Description

technical field [0001] The invention relates to the technical field of canned pumps, in particular to a digital display bearing wear monitoring instrument. Background technique [0002] The pump is a relatively extensive fluid delivery equipment. With the formulation of environmental regulations and the continuous enhancement of people's awareness of environmental protection, the leakage and discharge requirements of certain media have been stipulated in the form of law. More and more manufacturers in China, regardless of whether the fluid they transport are dangerous or not, are beginning to require a leak-free process environment and a good working environment. In many fields such as petroleum, chemical industry, and medicine, it is already a must to choose environmentally friendly pumps. One of the key criteria for many choices. The canned pump is one of the preferred pumps in the environmental protection pump category. [0003] The canned pump is lubricated and cooled ...

AI Technical Summary

Problems solved by technology

Therefore, if there are impurities in the circulating fluid or the flow rate is insufficient, various reasons such as interruption of fluid and crystallization during operation will cause direct damage to the bearing, causing serious wear and tear on the bearing, and the shielded pump will appear after the gap between the shaft sleeve and the bearing increases. Abnormal vibration, radial runout of the rotating shaft causing bending of the pump shaft, wear and leakage of the stator and rotor shielding sleeves causing the motor to burn out, etc.

[0004] In the prior art, the traditional analog pointer HPB meter is mostly used to monitor the wear state of the bearing. The traditional analog pointer HPB meter uses the G1 and G2 AC signals drawn from the motor to obtain the voltage signal of the radial displacement according to the principle of the differential transformer. The module converts a 0-300mV voltage signal to drive the pointer of the meter head to swing. Although the process of measuring the pointer swing is relatively intuitive, the accuracy is poor and the error of the measured value is large.

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