本文選題：容量比較法　切入點：船舶橫傾　出處：《上海交通大學》2013年碩士論文　論文類型：學位論文

【摘要】：船舶艙容計量檢定是船舶裝載量計算的主要依據(jù)。當前國家計量標準規(guī)定的計量不確定度為不大于0.3%，但這樣的計量標準已經(jīng)越來越滯后于市場對于計量精確度提高的要求。而容量比較法在船舶處于正浮時的艙容計量精度要比目前常用的幾何測量法具有更高的計量精確度。但容量比較法的測量效率相對較低，而且其精確度較高的前提是船舶處于正浮狀態(tài)，而在實際的艙容計量中，船舶經(jīng)常處于傾斜狀態(tài)，為了使容量比較法在艙容計量方面發(fā)揮其應有的優(yōu)勢，本文在分析國內(nèi)外艙容計算方法的基礎上，從提高容量比較法的測量效率和對船舶處于傾斜時的艙容計量修正進行了研究，給出了相應的修正方法。 為了提高容量比較法的測量效率，本文提出了改進的容量比較法。改進的容量比較法不需要測量連續(xù)兩次未知體積注水時，前一次未知體積注水后的艙內(nèi)液高，而是通過兩次標準注水之間的艙內(nèi)液體體積差，近似得求出船舶在若干液高處的艙內(nèi)液面水線面面積，然后通過樣條插值的方法，求得艙室的水線面面積曲線，然后通過數(shù)值積分的方法求得相應艙室的艙容曲線。 為了對容量比較法在船舶處于傾斜時的艙容計量進行修正，將艙室計量修正分為已知艙室理論型值和未知理論艙室型值兩種情況。對于已知艙室理論型值的情況，假定實際艙室與理論艙室具有相同的修正比，，然后結(jié)合用容量比較法測得的正浮艙容表對實際艙室的艙容計量進行傾斜修正。對于未知理論艙室型值的情況，根據(jù)常見的艙室形狀將船舶艙室分為規(guī)則艙、半規(guī)則艙和不規(guī)則艙三類，然后分別對各個艙型在測得若干艙室特征值的情況下，結(jié)合由容量比較法獲得的正浮艙容表，反求出實際艙室的形狀，最后在反求出的艙室形狀的基礎上對船舶處于傾斜狀態(tài)下的艙容計量進行相應修正。 本文通過相應的計算實例證明改進的容量比較法及容量比較法在船舶處于傾斜時的艙容計量修正方法的計算精度均滿足計量檢定規(guī)程的不確定度要求，這樣容量比較法測量效率較低及較難進行傾斜修正的問題就得到了解決，這對實際的艙容計量具有非常重要的現(xiàn)實意義。
[Abstract]:The measurement and verification of ship's cabin capacity is the main basis for the calculation of ship's loading capacity. At present, the uncertainty of measurement stipulated in the national standard of measurement is not greater than 0.3, but such standard of measurement has lagged behind the market in raising the accuracy of measurement more and more. The accuracy of capacity measurement is higher than that of the geometric method, but the efficiency of the capacity comparison method is relatively low. And the premise of its high accuracy is that the ship is in a positive floating state, but in the actual tank volume measurement, the ship is often inclined. In order to make the capacity comparison method play its due advantage in the tank capacity measurement, Based on the analysis of the calculation methods of cabin capacity at home and abroad, this paper studies on improving the measuring efficiency of the capacity comparison method and the correction of the tank volume measurement when the ship is inclined, and gives the corresponding correction method. In order to improve the measuring efficiency of the capacity comparison method, an improved capacity comparison method is proposed in this paper. The improved capacity comparison method does not need to measure the liquid height of the tank after the previous water injection with the unknown volume. Instead, by using the volume difference of liquid in the tank between two standard water injections, the waterline area of the tank surface of the ship at a number of liquid heights is approximately calculated, and then the waterline surface area curve of the cabin is obtained by spline interpolation method. Then the cabin capacity curve of the corresponding compartment is obtained by numerical integration method. In order to modify the capacity measurement of the ship when the ship is inclined, the cabin metering correction is divided into two cases: the known theoretical value of the compartment and the unknown value of the theoretical type of the compartment. For the case of the known value of the theoretical type of the compartment, Assuming that the actual compartments and theoretical compartments have the same modified ratio, and then, in combination with the upright floatation volume meter measured by the capacity comparison method, an inclined correction of the actual compartments' tank volume metering. For cases where the theoretical compartment type is unknown, According to the common cabin shape, the ship's cabin is divided into three categories: regular cabin, semi-regular cabin and irregular cabin, and then, for each cabin, under the condition that the characteristic values of several compartments are measured respectively, combined with the capacity comparison method, the floatation tank capacity table is obtained. The shape of the actual compartment is obtained by inverse calculation. Finally, the tank capacity measurement of the ship in the sloping state is corrected on the basis of the reverse calculation of the shape of the compartment. This paper proves that the accuracy of the improved capacity comparison method and the capacity comparison method when the ship is tilted meets the uncertainty requirement of the metering verification regulation. In this way, the problems of low efficiency and difficult to be corrected by the capacity comparison method have been solved, which is of great practical significance to the actual tank capacity measurement.
【學位授予單位】：上海交通大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：U662.2;U663.8

【參考文獻】

相關(guān)期刊論文 前10條

1 閔美松,丁勇,覃曉青;對VLCC艙室形狀描述和自由液面修正的若干考慮[J];船舶工程;1995年04期

2 林永隧 ,楊華龍,趙翠蓮;基于UGⅡ的雙底雙殼油輪液貨艙自動建模系統(tǒng)[J];船舶設計通訊;2003年Z1期

3 楊博良;船舶傾斜時液貨艙槽型艙壁對液艙容積的影響[J];船舶設計通訊;2003年Z1期

4 盛順保;體積管容量校準裝置標定液艙容量的方法[J];船舶設計通訊;2003年Z1期

5 陸永剛;我國艦船液艙容量計量技術(shù)的發(fā)展和現(xiàn)狀[J];船舶設計通訊;2004年02期

6 寇剛;艙容計算中的插值誤差分析[J];船舶設計通訊;2005年01期

7 楊榮淇;孫慶文;;淺談基于流量計量法的船舶液艙容量計量系統(tǒng)[J];船舶設計通訊;2010年01期

8 李靜;孫慶文;胡鐵牛;;船舶液艙受靜壓力作用引起的艙容量值變化的初步研究[J];船舶設計通訊;2010年01期

9 嚴家文，吳永昌;新一代計算機輔助艙容計算軟件（TANK）[J];船舶;1995年03期

10 張躍華 ,楊博良;橫傾狀態(tài)下艦船液艙容量計量修正方法研究[J];船舶設計通訊;2004年01期

相關(guān)博士學位論文 前2條

1 陸叢紅;基于NURBS表達的船舶初步設計關(guān)鍵技術(shù)研究[D];大連理工大學;2006年

2 戰(zhàn)翌婷;船舶數(shù)字化設計軟件平臺關(guān)鍵技術(shù)研究[D];大連理工大學;2008年

相關(guān)碩士學位論文 前2條

1 項勇;船舶艙艙容測量與修正研究[D];武漢理工大學;2006年

2 陶美金;液貨艙的結(jié)構(gòu)變形與艙容關(guān)系分析及艙容修正技術(shù)研究[D];上海交通大學;2008年

本文編號：1635806