CN-116812100-B - Flow velocity debugging method and system for ship oil system

CN116812100BCN 116812100 BCN116812100 BCN 116812100BCN-116812100-B

Abstract

The invention provides a flow velocity debugging method and a flow velocity debugging system for a ship oil system, which are characterized in that firstly, a pipe network model of the ship oil system is constructed, and a first Reynolds number of a pipeline under the condition of minimum valve resistance coefficient is solved; and finally, calculating the opening of the first valve according to the resistance coefficient-valve opening curve and the second valve resistance coefficient. In addition, the valve opening data output by the simulation debugging can provide reference for the actual debugging in the later field, thereby being beneficial to optimizing the debugging process of the ship system, shortening the debugging period and reducing the ship construction cost.

Inventors

Bian Xiutao
WU FEI
Shan Rongjie
WANG LEI
ZHOU WEIBO
YANG GONGAN

Assignees

江南造船(集团)有限责任公司

Dates

Publication Date: 20260512
Application Date: 20230629

Claims (5)

1. A flow rate tuning method for a marine oil system, comprising the steps of: S1, constructing a pipe network model of a ship oil system, wherein the pipe network model comprises various components, and the components comprise pipelines and valves; s2, setting data parameters of various components in a pipeline model, and setting the resistance coefficient of the valve to be minimum, wherein the resistance coefficient corresponding to the valve is a first valve resistance coefficient; S3, calculating a first Reynolds number of the fluid of each section of pipeline according to the set value of the data parameter and the first valve resistance coefficient; s4, judging whether the first Reynolds number is in a preset range or not, and obtaining a second valve resistance coefficient of each valve according to the second valve resistance coefficient, if the first Reynolds number is out of the preset range, recording the Reynolds number in the preset range as a second Reynolds number, and calculating the second valve resistance coefficient of each valve according to the second Reynolds number, if the second valve resistance coefficient is calculated according to the second Reynolds number, obtaining the second valve resistance coefficient, and if the second valve resistance coefficient is calculated according to the second Reynolds number, adjusting a pipeline system of the pipeline network model, repeating the steps S2-S4 until the second valve resistance coefficient is obtained, wherein the pipeline system of the pipeline network model is adjusted by setting a pipeline with the minimum Reynolds number as a blind end in simulation software; And S5, calculating the opening of the first valve according to the resistance coefficient-valve opening curve and the second valve resistance coefficient.
2. The flow rate adjustment method according to claim 1, wherein in step S4, if the first reynolds number is within a predetermined range, the first valve resistance coefficient is recorded as a second valve resistance coefficient.
3. The flow rate tuning method of claim 1, wherein the reynolds number within the predetermined range is greater than 4000.
4. A flow rate debugging system, characterized in that the flow rate debugging system is used for the flow rate debugging method of any one of claims 1 to 3, comprising: the pipe network model construction module is used for constructing a pipe network model according to an actual ship pipeline system; The data parameter setting module is used for setting data parameters of various components in the pipe network model, setting the resistance coefficient of the valve to be minimum, and setting the resistance coefficient corresponding to the valve to be a first valve resistance coefficient at the moment; the Reynolds number calculation module is used for calculating a first Reynolds number in each section of pipeline according to the data parameter and the first valve resistance coefficient; The Reynolds number comparison module is used for comparing the first Reynolds number with a preset range; And the valve opening calculating module is used for calculating the first valve opening according to the resistance coefficient-valve opening curve and the second valve resistance coefficient.
5. The flow rate adjustment system of claim 4, wherein the reynolds number comparison module further comprises: The judging module is used for judging that the first valve resistance coefficient is a second valve resistance coefficient when the first Reynolds number is compared to be in a preset range; and when the first Reynolds number is compared to be out of the preset range, the trial calculation module marks the Reynolds number in the preset range as a second Reynolds number, and trial calculates a second valve resistance coefficient of each valve according to the second Reynolds number.

Description

Flow velocity debugging method and system for ship oil system Technical Field The invention relates to the technical field of flow speed regulation of ship pipelines, in particular to a flow speed regulation method and a flow speed regulation system for a ship oil system. Background The ship pipeline is used as an important component of the ship device, just like an arteriovenous vessel of a human body, and provides the needed working media such as fuel, lubricating oil, water, compressed air and the like for the ship device, so that the safe operation of ship equipment is ensured. With the progress of shipbuilding technology and the trend of ship upsizing, ship pipelines and pipe network systems develop to be upsized and complicated, and the technical requirements of modern complex pipe networks are difficult to meet by the traditional pipe network debugging method only based on manual experience. In order to accelerate the ship construction progress and shorten the power system debugging period, the pipe network system layout scheme can be simulated by a computer simulation technology, so that the ship system debugging process is optimized. The ship oil flow system is used for supplying enough fuel oil and lubricating oil which meet the quality requirement for ship power plant equipment, and a large amount of time is consumed for the series washing process of the pipeline system in the later period of ship construction in order to ensure the cleanliness of the fuel oil and the lubricating oil which are conveyed to the equipment, and in view of the fact that the viscosity is still large after the oil working medium is heated, the opening degree of a valve is continuously regulated to change the oil flow speed of each pipeline, so that the pipeline cleaning is completed. When the pipe network system is complex, the above-mentioned oil flow system series-washing time can seriously drag the shipbuilding progress or even influence the ship-crossing node. At present, the disclosed patent is mainly focused on the monitoring and feedback regulation process of an electric regulating valve, for example, an invention patent MX2016002889 provides a demand management and control method of a fluid pipe network, a plurality of valve groups of the fluid network are controlled by a computer, parameters are calculated in real time by using a database, the flow rate and the flow quantity flowing through each valve are monitored and regulated, and the demand of the pipe network flow quantity is ensured. The above patent is mainly applied to the actual debugging process in the field, and is matched with an electric valve to realize negative feedback regulation. The valve of the pipe network system in the ship industry is usually in a manual regulation mode, and negative feedback regulation of the valve aiming at a target variable can consume a great deal of time. Disclosure of Invention In view of the above-mentioned drawbacks of the prior art, the present invention provides a flow rate adjustment method and system for a ship oil system, which includes firstly constructing a pipe network model of the ship oil system, solving a first reynolds number of a pipeline under the condition of minimum valve resistance coefficient, then judging whether the first reynolds number is within a preset range, obtaining a second valve resistance coefficient of each valve from the first reynolds number, and finally calculating a first valve opening according to a resistance coefficient-valve opening curve and the second valve resistance coefficient. In addition, the valve opening data output by the simulation debugging can provide reference for the actual debugging in the later field, thereby being beneficial to optimizing the debugging process of the ship system, shortening the debugging period and reducing the ship construction cost. To achieve the above and other related objects, the present invention provides a flow rate adjustment method for a ship oil system, comprising the steps of: S1, constructing a pipe network model of a ship oil system, wherein the pipe network model comprises various components, and the components comprise pipelines and valves; s2, setting data parameters of various components in a pipeline model, and setting the resistance coefficient of the valve to be minimum, wherein the resistance coefficient corresponding to the valve is a first valve resistance coefficient; S3, calculating a first Reynolds number of the fluid of each section of pipeline according to the set value of the data parameter and the first valve resistance coefficient; s4, judging whether the first Reynolds number is in a preset range, and obtaining a second valve resistance coefficient of each valve; And S5, calculating the opening of the first valve according to the resistance coefficient-valve opening curve and the second valve resistance coefficient. Optionally, in step S4, if the first reynolds number is within a preset range, the first valve