Scientific investigation ship limited space intensive arrangement method

Abstract

The invention discloses a scientific investigation ship limited space intensive arrangement method, and relates to the field of space intensive arrangement. The method comprises two main methods, namely a scientific investigation ship overall arrangement influence factor identification and arrangement method and a weight center-of-gravity statistics and control method, and the scientific investigation ship overall arrangement influence factor identification and arrangement method comprises the steps of arrangement influence factor identification, classification and identification of the space demand of a main system of the ship according to numbers, dimensionless arrangement and calculation and control of the weight center-of-gravity. And after identification according to the arrangement influence factors, carrying out dimensionless three-phase arrangement analysis and arrangement verification on the total space resource quantity of the designed scientific investigation ship, selecting an optimal reference value according to a dimensionless arrangement result, and carrying out arrangement verification by utilizing three-dimensional space arrangement software. According to the device, subsystems and cabins which have key influences on total arrangement resources in scientific investigation ship design are identified and classified, and are sorted and converted into dimensionless influence factors of space elements, so that total resource conversion and distribution in subsequent design steps are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of space intensiveness, and in particular to a method for intensively arranging limited space on a scientific research vessel. Background Art

[0002] A scientific research vessel is a technology-intensive and complex civilian ship. The displacement of a fully functional ocean-going scientific research vessel is usually between 2,500 tons and 4,000 tons, and the displacement of a large-scale scientific research vessel is between 6,000 tons and 8,000 tons. Compared with general civilian ships, their hull size is relatively small.

[0003] With the growing demand for oceanographic research in the open sea, deep sea, and geological fields, and the increasing diversification and scale of research systems, the workload of newly developed research vessels continues to increase. At the same time, as research voyages continue to lengthen, typically lasting 60 to 200 days, the demand for living conditions, space, and facilities for crew members operating at sea for extended periods is also increasing.

[0004] For reasons of economy, dock berthing, and accessibility to scientific research areas, the displacement of research vessels cannot be significantly increased. With the trend of diversification and large-scale functions of shipboard research systems, there is a lack of a design method for digitizing and analyzing the layout of limited spaces. Furthermore, as research voyages continue to lengthen, the living conditions, space, and facility requirements for crew members operating at sea for long periods of time are also increasing, and there is a lack of a calculation tool to constrain these requirements. In response to the above situation, the present invention provides a method for intensively arranging limited spaces on research vessels to address the above issues. Summary of the Invention

[0005] In response to the deficiencies of the prior art, the present invention provides a method for intensively arranging limited spaces of scientific research vessels, which solves the problem that the displacement scale of scientific research vessels cannot be significantly increased due to considerations of economy, berthing at docks and the ability to reach scientific research sea areas. Under the trend of diversification and large-scale functions of ship-borne scientific research systems, there is a lack of a design method for data-based analysis of limited space layout; the duration of scientific research voyages is constantly lengthening, and the living support conditions, space and facility requirements for ship personnel working at sea for a long time are also increasing, and there is a lack of a calculation tool to constrain the above requirements.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method for intensively arranging scientific research vessels in a limited space, including two main methods: a method for identifying and arranging factors affecting the overall arrangement of scientific research vessels and a method for statistically analyzing and controlling weight and gravity centers. The method for identifying and arranging factors affecting the overall arrangement of scientific research vessels includes:

[0007] Step 1: Identify the layout influencing factors. Classify and identify the space requirements of the main systems of the ship according to the numbering plan vi, where i = 1 to n;

[0008] Step 2: Dimensionless layout: After identifying the layout influencing factors, a dimensionless three-phase layout analysis is performed based on the total space resources of the designed research vessel;

[0009] Step 3: Layout verification: select the optimal reference value based on the result of dimensionless layout, and use 3D space layout software to verify the layout. Eliminate or modify the remaining interference parts to obtain the optimal layout results in all directions.

[0010] Preferably, the unit of the space requirement of the main system of the ship is cubic meters. In the identification of the layout influencing factors, the evaluation formula of vi is:

[0011] vi=αi*li*hi*bi

[0012] in,

[0013] αi is the subsystem shape factor, an empirical value determined based on different shapes;

[0014] li is the maximum longitudinal length of the subsystem, in meters;

[0015] hi is the maximum height of the subsystem, in meters;

[0016] bi is the maximum width of the subsystem, in meters.

[0017] Preferably, in the dimensionless arrangement, V is the maximum arrangable volume of the ship, and the unit is also cubic meters.

[0018] Preferably, in the dimensionless arrangement,

[0019] when When , it indicates that the system resources have exceeded the ship's carrying capacity and the subsystem needs to be cleaned up again;

[0020] when When the system layout space requirements are met.

[0021] Preferably, in the dimensionless arrangement, when the system layout space requirements are met, the arrangement can be carried out in the longitudinal, transverse and vertical directions, and the following three conditions can be tested:

[0022] 1) Get the minimum value by selecting and arranging;

[0023] 2) Get the minimum value by selecting and arranging;

[0024] 3) Get the minimum value by selecting and arranging;

[0025] Among them, the minimum value obtained by the three phases is the optimal reference value for arrangement selection.

[0026] Preferably, the method for controlling the weight center of gravity includes:

[0027] 1) Calculation of the center of gravity of the sub-compartment space weight:

[0028]

[0029] in,

[0030] Wi: total weight of sub-compartment space i, in kilograms;

[0031] γk: density of the kth type of structural material, in kN / m3, which needs to be converted to kg / m3;

[0032] Ak: coverage area of ​​the kth type of material, in square meters;

[0033] tk: thickness of the kth type of material, in meters;

[0034] mq: dry weight of the qth fixed equipment, in kilograms;

[0035] p: number of structural material types in the sub-compartment, such as steel plate and insulation layer;

[0036] r: number of fixed equipment in the sub-cabin;

[0037] 2) The coordinates of the sub-cabin space center of gravity are calculated as follows:

[0038]

[0039]

[0040] in,

[0041] (Xi, Yi, Zi): coordinates of the center of gravity of sub-tank i, based on the hull coordinate system, in meters;

[0042] (xk,yk,zk): coordinates of the center of the kth material, in meters;

[0043] (xq,yq,zq): The installation coordinates of the qth device, in meters.

[0044] Preferably, the weight center of gravity control method further includes the synthesis of the weight center of gravity of the entire ship and stability control, and the formula for the synthetic center of gravity of the entire ship is:

[0045]

[0046] in,

[0047] KG: height of the center of gravity of the entire ship;

[0048] LCG: longitudinal center of gravity position;

[0049] TCG: lateral center of gravity offset;

[0050] n: total number of sub-compartments.

[0051] Preferably, the stability safety criterion is:

[0052] Initial stability:

[0053] GM=KM-KG≥0.15=0.002·B

[0054] Large inclination stability:

[0055]

[0056] in,

[0057] KM is the transverse metacentric height, determined by the hydrostatic curve;

[0058] B is the hull width, in meters;

[0059] Δ is the design displacement, in tons.

[0060] The present invention discloses a method for intensively arranging a limited space of a scientific research vessel, which has the following beneficial effects:

[0061] 1. This method for intensively arranging limited space for research vessels utilizes a method for identifying factors influencing the overall layout of research vessels. This method identifies and categorizes subsystems and compartments that have a critical impact on overall layout resources in research vessel design, converting them into dimensionless influencing factors of spatial elements to facilitate overall resource conversion and allocation in subsequent design steps.

[0062] 2. This method of intensive layout of limited space for research vessels adopts the method of synchronous statistics of layout and weight center of gravity, which helps to intuitively reflect the data relationship between space layout and weight center of gravity of the vessel, identify unreasonable changes in weight center of gravity in advance, and improve the efficiency of overall layout design. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0064] Figure 1 This is a schematic diagram of a limited space intensive arrangement method for a scientific research vessel according to the present invention. DETAILED DESCRIPTION

[0065] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0066] The embodiments of the present application provide a method for intensively arranging limited spaces of scientific research vessels, thereby solving the problem that the displacement scale of scientific research vessels cannot be significantly increased due to considerations of economy, berthing at docks and the ability to reach scientific research sea areas. With the trend of diversification and large-scale functions of ship-borne scientific research systems, there is a lack of a design method for data-based analysis of limited space layout; the duration of scientific research voyages is constantly lengthening, and the living support conditions, space and facility requirements for ship personnel working at sea for a long time are also constantly increasing, and there is a lack of a calculation tool to constrain the above requirements.

[0067] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0068] An embodiment of the present invention discloses a method for intensively arranging a limited space of a scientific research vessel.

[0069] According to the attached Figure 1 As shown in the figure, there are two main methods, including the identification and arrangement method of the factors affecting the overall arrangement of the scientific research vessel and the method of counting and controlling the weight center of gravity. The identification and arrangement method of the factors affecting the overall arrangement of the scientific research vessel includes:

[0070] Step 1: Identify the layout influencing factors. Classify and identify the space requirements of the main systems of the ship according to the numbering plan vi, where i = 1 to n;

[0071] Step 2: Dimensionless layout: After identifying the layout influencing factors, a dimensionless three-phase layout analysis is performed based on the total space resources of the designed research vessel;

[0072] Step 3: Layout verification: select the optimal reference value based on the result of dimensionless layout, and use 3D space layout software to verify the layout. Eliminate or modify the remaining interference parts to obtain the optimal layout results in all directions.

[0073] The unit of space requirement for the main systems of this ship is cubic meters. In the identification of layout influencing factors, the vi evaluation formula is:

[0074] vi=αi*li*hi*bi

[0075] in,

[0076] αi is the subsystem shape factor, an empirical value determined based on different shapes;

[0077] li is the maximum longitudinal length of the subsystem, in meters;

[0078] hi is the maximum height of the subsystem, in meters;

[0079] bi is the maximum width of the subsystem, in meters.

[0080] In the dimensionless layout, V is the maximum arrangable volume of the ship, and the unit is also cubic meters.

[0081] when When , it indicates that the system resources have exceeded the ship's carrying capacity and the subsystem needs to be cleaned up again;

[0082] when When the system layout space requirements are met, the layout can be carried out longitudinally, transversely and vertically. The layout inspection can be carried out based on three conditions:

[0083] 1) Get the minimum value by selecting and arranging;

[0084] 2) Get the minimum value by selecting and arranging;

[0085] 3) Get the minimum value by selecting and arranging;

[0086] Among them, the minimum value obtained by the three phases is the optimal reference value for arrangement selection.

[0087] Methods for controlling the center of gravity include:

[0088] 1) Calculation of the center of gravity of the sub-compartment space weight:

[0089]

[0090] in,

[0091] Wi: total weight of sub-compartment space i, in kilograms;

[0092] γk: density of the kth type of structural material, in kN / m3, which needs to be converted to kg / m3;

[0093] Ak: coverage area of ​​the kth type of material, in square meters;

[0094] tk: thickness of the kth type of material, in meters;

[0095] mq: dry weight of the qth fixed equipment, in kilograms;

[0096] p: number of structural material types in the sub-compartment, such as steel plate and insulation layer;

[0097] r: number of fixed equipment in the sub-cabin;

[0098] The sub-compartment space weight center of gravity calculation is used to quantify local loads and accurately calculate the total weight of each sub-compartment, such as the laboratory, equipment compartment, and fuel tank, providing basic data for the weight distribution of the entire ship;

[0099] 2) The coordinates of the sub-cabin space center of gravity are calculated as follows:

[0100]

[0101] in,

[0102] (Xi, Yi, Zi): coordinates of the center of gravity of sub-tank i, based on the hull coordinate system, in meters;

[0103] (xk,yk,zk): coordinates of the center of the kth material, in meters;

[0104] (xq,yq,zq): the installation coordinates of the qth device, in meters;

[0105] The purpose of the sub-compartment spatial center of gravity coordinates is, firstly, to locate the weight distribution, that is, to determine the concentrated position of the weight of each sub-compartment in three-dimensional space, to avoid local center of gravity offset causing structural stress concentration; secondly, to support stability analysis and provide input data for the center of gravity synthesis of the entire ship to ensure that the stability criteria are met.

[0106] The method of controlling weight center of gravity also includes the synthesis of weight center of gravity of the whole ship and stability control. The formula of the composite center of gravity of the whole ship is:

[0107]

[0108] in,

[0109] KG: height of the center of gravity of the entire ship;

[0110] LCG: longitudinal center of gravity position;

[0111] TCG: lateral center of gravity offset;

[0112] n: total number of sub-compartments;

[0113] The purpose of synthesizing the center of gravity of the entire ship's weight is, firstly, global balance control, which integrates the weight distribution of all sub-compartments and calculates the center of gravity position of the entire ship, which directly affects the stability and navigation performance; secondly, trim design, which optimizes the longitudinal trim state by adjusting the LCG, such as avoiding excessive stern trim resulting in insufficient propeller immersion.

[0114] The stability safety criterion is:

[0115] Initial stability:

[0116] GM=KM-KG≥0.15=0.002·B

[0117] Large inclination stability:

[0118]

[0119] in,

[0120] KM is the transverse metacentric height, determined by the hydrostatic curve;

[0121] B is the hull width, in meters;

[0122] Δ is the design displacement, in tons;

[0123] The purpose of stability safety criteria is to ensure anti-capsulation capability and ensure that the ship has sufficient righting moment in wind and waves. The GM criterion prevents small-angle capsizing, and the GZ curve criterion prevents large-angle capsizing. Secondly, regulatory compliance is to meet the mandatory stability standards of the International Maritime Organization and classification societies.

[0124] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for intensively arranging limited space of scientific research vessels, characterized in that: The invention includes two main methods: a method for identifying and arranging factors affecting the overall arrangement of a scientific research vessel and a method for counting and controlling the weight center of gravity. The method for identifying and arranging factors affecting the overall arrangement of a scientific research vessel includes: Step 1: Identify the layout influencing factors. Classify and identify the space requirements of the main systems of the ship according to the numbering plan vi, where i = 1 to n, and n is the number of cabins of the ship; Step 2: Dimensionless layout: After identifying the layout influencing factors, a dimensionless three-phase layout analysis is performed based on the total space resources of the designed research vessel; Step 3: Layout verification: select the optimal reference value based on the result of dimensionless layout, and use 3D space layout software to verify the layout. Eliminate or modify the remaining interference parts to obtain the optimal layout results in all directions.

2. The method for intensively arranging limited space of a research vessel according to claim 1, characterized in that: The unit of space requirement of the main system of the ship is cubic meter. In the identification of the layout influencing factors, the evaluation formula of vi is: vi=αi*li*hi*bi in, αi is the subsystem shape factor, an empirical value determined based on different shapes; li is the maximum longitudinal length of the subsystem, in meters; hi is the maximum height of the subsystem, in meters; bi is the maximum width of the subsystem, in meters.

3. The method for intensively arranging limited space of a research vessel according to claim 1, characterized in that: In the dimensionless arrangement, V is the maximum arrangable volume of the ship, and the unit is also cubic meters.

4. The method for intensively arranging limited space of a research vessel according to claim 3, characterized in that: In the dimensionless arrangement, when When , it indicates that the system resources have exceeded the ship's carrying capacity and the subsystem needs to be cleaned up again; when When the system layout space requirements are met.

5. The method for intensively arranging limited space of a research vessel according to claim 4, characterized in that: In the dimensionless layout, when the system layout space requirements are met, the layout can be expanded in the longitudinal, transverse and vertical directions to verify the following three conditions: 1) Get the minimum value by selecting and arranging; 2) Get the minimum value by selecting and arranging; 3) Get the minimum value by selecting and arranging; Among them, the minimum value obtained by the three phases is the optimal reference value for arrangement selection.

6. The method for intensively arranging limited space of a research vessel according to claim 1, characterized in that: The method for controlling the weight center of gravity comprises: 1) Calculation of the center of gravity of the sub-compartment space weight: in, Wi: total weight of sub-compartment space i, in kilograms; γk: density of the kth type of structural material, unit kN / m 3 , need to be converted to kg / m 3 ; Ak: coverage area of ​​the kth type of material, in square meters; tk: thickness of the kth type of material, in meters; mq: dry weight of the qth fixed equipment, in kilograms; p: number of structural material types in the sub-compartment, such as steel plate and insulation layer; r: number of fixed equipment in the sub-cabin; 2) The coordinates of the sub-cabin space center of gravity are calculated as follows: in, (Xi, Yi, Zi): coordinates of the center of gravity of sub-tank i, based on the hull coordinate system, in meters; (xk,yk,zk): coordinates of the center of the kth material, in meters; (xq,yq,zq): The installation coordinates of the qth device, in meters.

7. The method for intensively arranging limited space of a research vessel according to claim 6, characterized in that: The method for controlling the weight center of gravity also includes the synthesis of the weight center of gravity of the entire ship and stability control. The formula for the synthetic center of gravity of the entire ship is: in, KG: height of the center of gravity of the entire ship; LCG: longitudinal center of gravity position; TCG: lateral center of gravity offset; n: total number of sub-compartments.

8. The method for intensively arranging limited space of a research vessel according to claim 7, characterized in that: The stability safety criterion is: Initial stability: GM=KM-KG≥0.15=0.002·B Large inclination stability: in, KM is the transverse metacentric height, determined by the hydrostatic curve; B is the hull width, in meters; Δ is the design displacement, in tons.

Images