A water taking device for a ship inclination test

Abstract

The utility model discloses a kind of ship inclination test water taking device, it includes: barrel container, its bottom is provided with counterweight block;Its internal space is cylindrical, and the top opening of top surface of barrel container is formed by extending upward;The top of barrel container is provided with main rope connecting portion on both sides, respectively for and the two branches of main rope bottom end connection;Cover structure is used to block the top opening of barrel container, and is connected with auxiliary rope, auxiliary rope is used to pull cover structure from barrel container and separate;Floating plug, slidingly arranged in the internal space of barrel container, its density is less than water, float in the process of barrel container water injection, and after water injection is completed, the top opening of barrel container is shielded. The device can extract water sample of specified depth, and it is simple in structure, convenient to use;Floating plug can reduce the water in surrounding water body into barrel container interior during device lifting, so that sampling and detection process are more accurate.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding, and in particular to a water intake device for ship tilting tests. Background Technology

[0002] After a ship is built, its empty weight needs to be measured to obtain its deadweight index. Empty weight measurement uses an inclining test to read the ship's draft and calculate the empty displacement volume using a hull model. The water density in the test area is then measured, and multiplying the water density by the displacement volume gives the empty weight. The water density directly affects the final empty weight, potentially causing a deviation of tens of tons from the stated empty weight.

[0003] Currently, the traditional method for sampling test waters involves using a bucket, which is lowered directly to the surface by a rope to collect surface water from the sea or river. Once ashore, the water in the bucket is calibrated using a hydrometer. However, this method only samples the surface layer of water, whose temperature and density differ from the water at a depth sufficient to support the ship. As the water depth increases, its temperature and density change. The water at the midship level is the closest to the actual load factor, occurring at the top, middle, and bottom of the ship's draft. If the surface water density is lower than that at the midship level, the measured empty ship weight will be too low; if it is higher, the measured empty ship weight will be too high, resulting in a reduced load capacity and lower cargo capacity per voyage, thus harming the shipowner's economic benefits in actual operation. Therefore, during ship tilting tests, sampling the midship level or water at different depths is crucial for accurately measuring water density and thus determining the precise empty ship weight. Utility Model Content

[0004] In view of the above-mentioned defects and deficiencies of the existing technology, the present invention provides a water sampling device for ship tilting test, which can obtain water samples at a specified depth, thus solving the problem that the existing technology can only obtain water samples from the surface of the water body.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A water intake device for ship tilting tests, characterized in that it comprises:

[0007] A cylindrical container with a counterweight at its bottom; its internal space is cylindrical, extending upward to form a top opening on the top surface of the cylindrical container; the top two sides of the cylindrical container are provided with main rope connecting parts, which are respectively used to connect to two branches at the bottom of the main rope.

[0008] A capping structure is used to seal the top opening of the cylindrical container and is connected to an auxiliary rope for pulling the capping structure detached from the cylindrical container.

[0009] A floating plug, which is slidably disposed in the internal space of the cylindrical container, has a density less than that of water. It floats during the filling of the cylindrical container and blocks the top opening of the cylindrical container after the filling is completed.

[0010] A further improvement of this utility model is that both of the main rope connection parts are ring-shaped, and the two branches at the bottom of the main rope are of equal length.

[0011] A further improvement of this utility model is that: the sealing structure includes a rigid cover plate, the lower surface of which is provided with a plunger for sealing the top opening of the cylindrical container; the upper surface of the rigid cover plate is provided with an eyelet for connecting with an auxiliary rope.

[0012] A further improvement of this utility model is that: the sealing structure is a flexible sealing cap, which is circular; the diameter of the flexible sealing cap is larger than the outer diameter of the top of the cylindrical container; the lower surface of the flexible sealing cap is used to fit the top surface of the cylindrical container, and the lower surface edge of the flexible sealing cap is provided with a ring-shaped edging; the inner diameter of the edging is such that when the flexible sealing cap is installed on the top of the cylindrical container, the edging surrounds the outer edge of the top of the cylindrical container and forms an interference fit; the upper surface of the flexible sealing cap is provided with an installation ring for connecting with an auxiliary rope.

[0013] A further improvement of this invention is that the mounting ring is adjacent to the edge of the flexible cap.

[0014] A further improvement of this utility model is that: the edge of the floating plug is adapted to the internal space of the cylindrical container, and several water-guiding notches are provided on the edge; several water-guiding grooves communicating with the water-guiding notches are provided on the bottom surface of the floating plug.

[0015] A further improvement of this utility model is that a raised limiting part is provided on the inner edge of the top opening of the cylindrical container to limit the floating height of the floating plug.

[0016] A further improvement of this utility model is that the top surface of the floating plug is provided with a circular boss structure, the diameter of which is smaller than the inner diameter of the limiting part.

[0017] A further improvement of this utility model is that the cylindrical container is made of steel pipe, and the counterweight is a metal counterweight that is filled at the bottom of the cylindrical container.

[0018] A further improvement of this utility model is that a bottom plate is welded to the bottom of the cylindrical container, and the outer diameter of the bottom plate is larger than the outer diameter of the cylindrical container.

[0019] The beneficial technical effects of this utility model include: the device can extract water samples at a specified depth, and its structure is simple and easy to use; the floating plug can reduce the amount of water from the surrounding water entering the cylindrical container during the device's lifting process, making the sampling and detection process more accurate. Attached Figure Description

[0020] Figure 1 This is a cross-sectional schematic diagram of the water intake device for the ship tilting test in Example 1;

[0021] Figure 2 This is a schematic cross-sectional view of the water sampling device after sampling during the ship tilting test in Example 1;

[0022] Figure 3 This is a schematic diagram of the floating plug in Example 1;

[0023] Figure 4 This is another schematic diagram of the floating plug in Example 1;

[0024] Figure 5 This is a cross-sectional schematic diagram of the flexible cap in Example 2;

[0025] Figure 6 This is a schematic diagram of a cylindrical container with a flexible cap in Example 2. Detailed Implementation

[0026] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0027] Example 1: As Figure 1 As shown, an embodiment of this utility model provides a water intake device for ship tilting test, which includes: a cylindrical container 10, a sealing structure, and a floating plug 30.

[0028] A counterweight 11 is provided at the bottom of the cylindrical container 10 to keep it upright in the water. The internal space of the cylindrical container 10 is cylindrical, extending upward to form a top opening 12 on the top surface of the cylindrical container 10. Main rope connection parts 13 are provided on both sides of the top of the cylindrical container 10, which are used to connect to two branches at the bottom of the main rope 20, respectively. Both main rope connection parts 13 are ring-shaped, and the two branches at the bottom of the main rope 20 are of equal length, which ensures that the cylindrical container 10 remains upright in the water.

[0029] The capping structure is used to seal the top opening 12 of the cylindrical container 10. During the lowering of the cylindrical container 10, the capping structure prevents water from entering the internal space of the cylindrical container 10. The capping structure is connected to the auxiliary rope 21. After the cylindrical container 10 is lowered to the predetermined water depth, the capping structure can be detached from the cylindrical container 10 by pulling the auxiliary rope 21, thereby allowing water of the predetermined depth to enter the cylindrical container 10.

[0030] In this embodiment, the sealing structure includes a rigid cover plate 40. The lower surface of the rigid cover plate 40 is provided with a plunger 41 for sealing the top opening 12 of the cylindrical container 10; the upper surface of the rigid cover plate 40 is provided with an eyelet 42 for connection to the auxiliary rope 21. The diameter of the plunger 41 is slightly smaller than the inner diameter of the top opening 12 of the cylindrical container 10. In some specific implementations, the plunger 41 may be made of a flexible material (such as silicone) to facilitate the separation of the sealing structure from the cylindrical container 10.

[0031] like Figure 2 , Figure 3 , Figure 4 As shown, the outer edge of the floating plug 30 is adapted to the cross-sectional shape of the internal space of the cylindrical container 10, both being circular, and the diameter of the floating plug 30 is slightly smaller than the diameter of the internal space of the cylindrical container 10, so that the floating plug 30 can slide along the axis of the cylindrical container 10 in the internal space.

[0032] The floating plug 30 has several water-guiding notches 31 on its edge; several water-guiding grooves 32 communicating with the water-guiding notches 31 are formed on the bottom surface of the floating plug 30. After the cap structure separates from the cylindrical container 10, water above the floating plug 30 enters below the floating plug 30 through the water-guiding notches 31. After sampling is completed, the floating plug 30 floats to a position adjacent to the top opening of the cylindrical container 10 (e.g., ...). Figure 2 As shown, Figure 2 The rope was hidden in the middle.

[0033] A raised limiting portion 14 is provided around the inner edge of the top opening 12 of the cylindrical container 10 to limit the upward floating height of the floating plug 30. In this embodiment, the limiting portion 14 is entirely circular, and its inner diameter is smaller than the outer diameter of the floating plug 30, so that the floating plug 30 cannot pass through the limitation of the limiting portion 14 by its own buoyancy. The top surface of the floating plug 30 is provided with a circular boss structure 33, the diameter of which is smaller than the inner diameter of the limiting portion 14.

[0034] In this embodiment, the floating plug 30 is made of an existing flexible foam material (such as polyurethane), and a handle 34 is also provided on the top of the floating plug 30. After water is discharged from the cylindrical container 10, the user can pull the handle 34, causing the floating plug 30 to deform slightly and pass through the limiting part 14 on the inner edge of the top opening 12.

[0035] In this embodiment, the cylindrical container 10 is made of steel pipe, and the counterweight 11 is a metal counterweight that fills the bottom of the cylindrical container 10. The total weight of the counterweight 11 and the cylindrical container 10 needs to be greater than the sum of the downward force required to separate the sealing structure within the predetermined sampling range and the buoyancy of the cylindrical container 10. In this embodiment, the water depth range for sampling is 0.4–3 m, the drainage volume of the cylindrical container 10 is 8 L, and the total weight of the counterweight 11 and the cylindrical container 10 is greater than 15 kg.

[0036] In this embodiment, a bottom plate 15 is welded to the bottom of the cylindrical container 10. The outer diameter of the bottom plate 15 is larger than the outer diameter of the cylindrical container 10, thereby forming a side-extending edge. This edge can increase the contact area between the cylindrical container 10 and the ground, so that the cylindrical container 10 can be placed stably on the deck.

[0037] During use, first determine the sampling depth and mark the predetermined position on the main rope; then, the sampling personnel hold the rope and lower the cylindrical container into the water, causing the cylindrical container 10 to sink to the predetermined position, at which point the mark on the main rope 20 is level with the water surface; then, pull the auxiliary rope 21 to separate the capping structure from the cylindrical container 10, allowing water to enter the interior of the cylindrical container 10, causing the floating plug 30 to float to the surface. Figure 2 The position shown; at this time, the cylindrical container 10 containing the water sample is lifted upward by the traction main rope 20; during this process, most of the top surface of the cylindrical container 10 is blocked by the floating plug 30, which reduces the interaction between the water sample in the cylindrical container 10 and the surrounding water during the lifting process, and improves the accuracy of the test results.

[0038] Example 2: As Figure 5 , Figure 6 As shown, the main difference between this embodiment and Embodiment 1 is that the sealing structure in this embodiment adopts a flexible structure. The sealing structure is a flexible sealing cap 50, which is circular and made of existing flexible polymers (such as polyethylene and polyvinyl chloride). The diameter of the flexible sealing cap 50 is larger than the top outer diameter of the cylindrical container 10, and the lower surface of the flexible sealing cap 50 is used to fit the top surface of the cylindrical container 10.

[0039] The lower surface edge of the flexible cap 50 is provided with an annular edging 51. The inner diameter of the edging 51 ensures that when the flexible cap 50 is installed on top of the cylindrical container 10, the edging 51 surrounds the outer edge of the top of the cylindrical container 10, forming an interference fit, thus preventing it from easily falling off during water handling. The upper surface of the flexible cap is provided with an installation ring 52 for connecting to the auxiliary rope 21. The flexible cap 50 can also be separated from the cylindrical container 10 by pulling the auxiliary rope 21. Due to the use of a flexible polymer material, the installation ring 52 deforms locally when pulled, and can be opened with a small pulling force even under high water pressure. Compared with Embodiment 1, the flexible cap 50 is more suitable for sampling depths with slightly higher water pressure.

[0040] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be included in the claims of this utility model.

Claims

1. A water intake device for ship tilting tests, characterized in that... include: A cylindrical container (10) with a counterweight (11) at its bottom; Its internal space is cylindrical, extending upward to form a top opening (12) on the top surface of the cylindrical container (10); the top two sides of the cylindrical container (10) are provided with main rope connecting parts (13), which are used to connect with the two branches at the bottom of the main rope (20); A capping structure is used to seal the top opening (12) of the cylindrical container (10) and is connected to an auxiliary rope (21) for pulling the capping structure away from the cylindrical container (10); A floating plug (30) is slidably disposed in the internal space of the cylindrical container (10). Its density is less than that of water. It floats up during the water filling process of the cylindrical container (10) and blocks the top opening (12) of the cylindrical container (10) after the water filling is completed.

2. The water intake device for ship tilting test according to claim 1, characterized in that: Both of the main rope connection parts (13) are loops, and the two branches at the bottom of the main rope (20) are of equal length.

3. The water intake device for ship tilting test according to claim 1, characterized in that: The sealing structure includes a rigid cover plate (40), the lower surface of which is provided with a plunger (41) for sealing the top opening (12) of the cylindrical container (10); the upper surface of the rigid cover plate (40) is provided with an eye ring (42) for connecting with the auxiliary rope (21).

4. A ship tilting test water intake device according to claim 1, characterized in that: The cap structure is a circular flexible cap (50); the diameter of the flexible cap (50) is larger than the top outer diameter of the cylindrical container (10), the lower surface of the flexible cap (50) is used to fit the top surface of the cylindrical container (10), and the lower surface edge of the flexible cap (50) is provided with a ring-shaped edging (51); the inner diameter of the edging (51) is such that when the flexible cap (50) is installed on the top of the cylindrical container (10), the edging (51) surrounds the outer edge of the top of the cylindrical container (10) and forms an interference fit; the upper surface of the flexible cap (50) is provided with an installation ring (52) for connecting with the auxiliary rope (21).

5. A ship tilting test water intake device according to claim 4, characterized in that: The mounting ring (52) is adjacent to the edge of the flexible cap.

6. A ship tilting test water intake device according to claim 1, characterized in that: The edge of the floating plug (30) is adapted to the internal space of the cylindrical container (10), and several water-guiding notches (31) are provided on the edge; several water-guiding grooves (32) communicating with the water-guiding notches (31) are provided on the bottom surface of the floating plug (30).

7. A water intake device for ship tilting tests according to claim 1, characterized in that: A raised limiting part (14) is provided on the inner edge of the top opening (12) of the cylindrical container (10) to limit the floating height of the floating plug (30).

8. A ship tilting test water intake device according to claim 7, characterized in that: The top surface of the floating plug (30) is provided with a circular boss structure (33), the diameter of which is smaller than the inner diameter of the limiting part (14).

9. A ship tilting test water intake device according to claim 1, characterized in that: The cylindrical container (10) is made of steel pipe, and the counterweight (11) is a metal counterweight that fills the bottom of the cylindrical container (10).

10. A ship tilting test water intake device according to claim 1, characterized in that: The bottom of the cylindrical container (10) is welded with a base plate (15), the outer diameter of which is larger than the outer diameter of the cylindrical container (10).

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