Method for calculating blocking degree of pipelines and filters

Abstract

The invention discloses a method for calculating the blocking degree of pipelines and filters. The method comprises the following steps of measuring the full pressure (P) and the static pressure (Pst)of a certain position of a pipeline through a pressure measuring pipeline, and obtaining the dynamic pressure Pd through calculation, wherein the dynamic pressure Pd = P-Pst; and representing the blocking state of the system flow by the ratio of the static pressure to the dynamic pressure (Pst / Pd) of the flow system, and representing the blocking degree (C) of the system flow by the ratio of the increase amount (Pst / Pd-L) of the blocking state to the range of the specified initial blocking state parameter (L) and the final blocking state parameter (H), and please see the specification for the expression. The method can accurately and stably indicate the blocking degree of the pipelines and the filters in the variable flow system by using the blocking degree derived from the fluid mechanics theory and the algorithm, and avoids the problem that the blocking state of the pipelines and the filters cannot be determined due to changes in the flow rate and the pressure.

Description

technical field [0001] The invention relates to the field of pipeline monitoring technical equipment, in particular to a method for calculating the clogging degree of pipelines and filters. Background technique [0002] It is of great practical significance to obtain the operating status of the fluid delivery pipeline network in real time. For long-distance and complex fluid delivery pipelines, it is possible to quickly find and eliminate existing hidden dangers and faults; for the clogging state or degree of vehicle filter, especially for high-power special-purpose vehicles, it can effectively prevent damage caused by lack of maintenance. The operation failure and damage of vehicles and equipment can be reduced, and the waste of manpower and financial resources caused by over-maintenance can be reduced. [0003] In order to obtain the resistance of the pipeline flow or the blockage of the filter, the traditional method is mostly to detect the pressure parameter (usually st...

AI Technical Summary

Problems solved by technology

That is to say, the system only detects the static pressure of the pipeline and the static pressure difference between the inlet and outlet of the filter, ignoring the factors affecting the flow change in the pipeline. Therefore, in many cases, the detection of filter clogging is inaccurate.

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