Water taking device for ship inclination test

Abstract

The invention discloses a water taking device for a ship inclination test, and the device comprises a cylindrical container which is provided with a balancing weight at the bottom; the inner space of the cylindrical container is cylindrical, and the cylindrical container extends upwards to form a top opening on the top surface of the cylindrical container; main rope connecting parts are arranged on the two sides of the top of the cylindrical container and used for being connected with two branches at the bottom end of a main rope respectively. The sealing cover structure is used for sealing the top opening of the cylindrical container and is connected with an auxiliary rope, and the auxiliary rope is used for pulling the sealing cover structure to be separated from the cylindrical container; the floating plug is arranged in the inner space of the cylindrical container in a sliding mode, the density of the floating plug is smaller than that of water, and the floating plug floats upwards in the water injection process of the cylindrical container and shields the top opening of the cylindrical container after water injection is completed. The device can be used for extracting a water sample at a specified depth, and is simple in structure and convenient to use; and the floating plug can reduce water in the surrounding water body entering the cylindrical container in the lifting process of the device, so that the sampling and detection processes are more accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ships, in particular to a water sampling device for ship inclination test. BACKGROUND

[0002] After the completion of shipbuilding, in order to obtain the load index, the weight of the whole ship needs to be measured. The weight of the empty ship is measured by using the inclination test method to read the water level of the ship, and the weight of the empty ship is calculated by using the ship model. The water density of the test water area is measured, and the water density is multiplied by the displacement volume to obtain the weight of the empty ship. The size of the water density directly affects the final weight of the empty ship, and the result of the water density may cause a deviation of tens of tons in the weight index of the empty ship.

[0003] At present, the traditional way of sampling the test water area is to use a bucket and directly hang it to the water surface with a rope to take the surface water in the sea or river. Then, after reaching the shore, the density of the water in the bucket is calibrated by using a density meter. The water sampled in this way is only the surface water, and the temperature and density of the water are different from the water at a certain depth of the carrying ship. With the increase of water depth, the temperature and density of the water will change, and the middle water is relatively closest to the true state at the upper end, middle and lower end of the ship water. If the density of the surface water is less than that of the middle water, the measured weight of the empty ship is lighter; if the density of the surface water is greater than that of the middle water, the measured weight of the empty ship is heavier, which reduces the load index and reduces the cargo carrying capacity of each voyage, and damages the economic benefits of the shipowner in the actual ship operation. Therefore, during the ship inclination test, sampling the middle water or water at different depths submerged by the ship is the key to accurately measuring the water density and accurately measuring the weight index of the empty ship. SUMMARY

[0004] In view of the above defects and deficiencies in the prior art, the present application provides a water sampling device for ship inclination test, which can obtain water samples at a specified depth and solve the problem that only surface water samples can be obtained in the prior art.

[0005] To achieve the above purpose, the technical scheme provided by the present application is as follows:

[0006] A water sampling device for ship inclination test, characterized in that it comprises:

[0007] a cylindrical container, the bottom of which is provided with a counterweight; the internal space of the cylindrical container is in a cylindrical shape, and the top of the cylindrical container is extended to form a top opening; the top of the cylindrical container is provided with a main rope connecting part on both sides, which is used for connecting with two branches of the bottom end of the main rope, respectively;

[0008] a cover structure for plugging the top opening of the cylindrical container and connecting with an auxiliary rope, the auxiliary rope being used for pulling the cover structure away from the cylindrical container;

[0009] A floating plug is slidably arranged in the inner space of the cylindrical container, and has a density less than water, floats up during water filling of the cylindrical container, and blocks the top opening of the cylindrical container after water filling is completed.

[0010] The further improvement of the present application is that the two main rope connecting parts are annular, and the two branches of the bottom end of the main rope have equal length.

[0011] The further improvement of the present application is that the cover structure comprises a rigid cover plate, the lower surface of the rigid cover plate is provided with a plug for blocking the top opening of the cylindrical container, and the upper surface of the rigid cover plate is provided with an eye ring for connecting with the auxiliary rope.

[0012] The further improvement of the present application is that the cover structure is a flexible cover, which is circular, the diameter of the flexible cover is greater than the top outer diameter of the cylindrical container, the lower surface of the flexible cover is used for abutting against the top surface of the cylindrical container, and the lower surface edge of the flexible cover is provided with a ring-shaped edge covering; the inner diameter of the edge covering is such that when the flexible cover is installed on the top of the cylindrical container, the edge covering surrounds the top outer edge of the cylindrical container and forms an interference fit; and the upper surface of the flexible cover is provided with a mounting ring for connecting with the auxiliary rope.

[0013] The further improvement of the present application is that the mounting ring is adjacent to the edge of the flexible cover.

[0014] The further improvement of the present application is that the edge of the floating plug is matched with the inner space of the cylindrical container, and a plurality of water guide notches are formed in the edge; and a plurality of water guide grooves are formed in the bottom surface of the floating plug and communicated with the water guide notches.

[0015] The further improvement of the present application is that a ring-shaped limiting part is arranged on the inner edge of the top opening of the cylindrical container, for limiting the floating height of the floating plug.

[0016] The further improvement of the present application is that the top surface of the floating plug is provided with a circular boss structure, and the diameter of the boss structure is less than the inner diameter of the limiting part.

[0017] The further improvement of the present application is that the cylindrical container is made of a steel pipe, and the counterweight is a metal counterweight filled in the bottom of the cylindrical container.

[0018] The further improvement of the present application is that a bottom plate is welded on the bottom of the cylindrical container, and the outer diameter of the bottom plate is greater than the outer diameter of the cylindrical container.

[0019] The beneficial technical effects of the present invention 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 the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention 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 the present invention. 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 the present invention 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 cover structure is used to seal the top opening 12 of the cylindrical container 10. During the lowering of the cylindrical container 10, the cover structure can prevent water from entering the interior space of the cylindrical container 10. The cover structure is connected with the auxiliary rope 21, and after the cylindrical container 10 is lowered to a predetermined water depth, the cover structure can be separated from the cylindrical container 10 by pulling the auxiliary rope 21, so that water at the predetermined depth enters the cylindrical container 10.

[0030] In the embodiment, the cover 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 eye ring 42 for connecting with 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 embodiments, the plunger 41 can be made of flexible material (such as silicone), so as to facilitate the separation of the cover structure from the cylindrical container 10.

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

[0032] The edge of the floating plug 30 is provided with a plurality of water guide notches 31; the bottom surface of the floating plug 30 is provided with a plurality of water guide grooves 32 in communication with the water guide notches 31. After the cover structure is separated from the cylindrical container 10, the water above the floating plug 30 enters the lower part of the floating plug 30 through the water guide notches 31. After sampling is completed, the floating plug 30 floats to a position adjacent to the top opening of the cylindrical container 10 (as shown in Figure 2 , Figure 2 The rope is hidden in the figure).

[0033] A raised limiting portion 14 is arranged on the inner edge of the top opening 12 of the cylindrical container 10, for limiting the floating height of the floating plug 30. In the embodiment, the limiting portion 14 is a whole circular ring, and the inner diameter of the limiting portion 14 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, and the diameter of the boss structure 33 is smaller than the inner diameter of the limiting portion 14.

[0034] In the embodiment, the floating plug 30 is made of existing flexible foaming material (such as polyurethane), and the floating plug 30 is further provided with a handle 34. After the cylindrical container 10 is taken out of water, the user can pull the handle 34, so that the floating plug 30 is slightly deformed and passes through the limiting portion 14 of the inner edge of the top opening 12.

[0035] In this embodiment, the cylindrical container 10 is made of steel pipe, and the weight block 11 is a metal weight block filled in the bottom of the cylindrical container 10. The total weight of the weight block 11 and the cylindrical container 10 needs to be greater than the sum of the downward force required for separating the cover structure in the predetermined sampling range and the buoyancy of the cylindrical container 10. In this embodiment, the sampling depth range is 0.4-3m, the drainage volume of the cylindrical container 10 is 8L, and the total weight of the weight block 11 and the cylindrical container 10 is greater than 15kg.

[0036] In this embodiment, the bottom of the cylindrical container 10 is welded with a bottom plate 15, and the outer diameter of the bottom plate 15 is greater than the outer diameter of the cylindrical container 10, thereby forming a side-extended rim which can increase the contact area of the cylindrical container 10 with the ground, so that the cylindrical container 10 can be stably placed on the deck.

[0037] In use, first determine the sampling depth, and make a mark on the main rope at a predetermined position; then the sampler puts the cylindrical container into the water by hand, so that the cylindrical container 10 sinks to the predetermined position, at which time the mark on the main rope 20 is flush with the water surface; then pull the auxiliary rope 21, so that the cover structure is separated from the cylindrical container 10, water enters the inside of the cylindrical container 10, and the floating plug 30 floats to the position shown; at this time, the cylindrical container 10 with water sample is lifted upward by pulling the main rope 20; in this process, the top surface of the cylindrical container 10 is mostly blocked by the floating plug 30, reducing the interaction of the water sample in the cylindrical container 10 with the surrounding water during lifting, and improving the accuracy of the detection result. Figure 2

[0038] Embodiment 2: as shown in Figure 5 , Figure 6 The main difference between this embodiment and embodiment 1 is that the cover structure in this embodiment is flexible, and the cover structure is a flexible cover 50 in the form of a circle made of existing flexible polymers (such as polyethylene, polyvinyl chloride); the diameter of the flexible cover 50 is greater than the outer diameter of the top of the cylindrical container 10, and the lower surface of the flexible cover 50 is used to fit the top surface of the cylindrical container 10.

[0039] ​The lower edge of the flexible cover 50 is provided with a ring-shaped rim 51; the inner diameter of the rim 51 is such that when the flexible cover 50 is mounted on the top of the cylindrical container 10, the rim 51 encircles the outer edge of the top of the cylindrical container 10 and forms an interference fit, so that it is not easily detached during the water process. The upper surface of the flexible cover is provided with a mounting ring 52 for connecting with the auxiliary rope 21. The flexible cover 50 can also be separated from the cylindrical container 10 by pulling the auxiliary rope 21. Because of the flexible polymer material, when the mounting ring 52 is pulled, it deforms locally first, and in the case of a larger water pressure, it can also be opened by a smaller pulling force. Compared with the embodiment 1, the flexible cover 50 is more suitable for a sampling depth with a slightly larger water pressure.

[0040] The above embodiments are only illustrative of the principles and effects of the present application, and are not intended to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be included in the claims of the present application.

Claims

1. A ship inclining test water taking device, characterised in that The utility model relates to a kind of water injection device, including: Cylindrical container (10), the bottom is provided with counterweight (11); Its internal space is cylindrical, extends in the top of the cylindrical container (10) and forms top opening (12);The top of the cylindrical container (10) is provided with main rope connecting portion (13) on both sides, respectively for and the two branches of main rope (20) bottom end are connected; Cover structure, for blocking the top opening (12) of the cylindrical container (10), and with auxiliary rope (21) connection, auxiliary rope (21) is used to pull cover structure from the cylindrical container (10) and separate; Float plug (30), slidingly arranged in the internal space of the cylindrical container (10), its density is less than water, float up during water injection process in the cylindrical container (10), and after water injection is completed, the top opening (12) of the cylindrical container (10) is shielded.

2. A water taking device for inclining tests of a ship according to claim 1, characterized in that Two main rope connecting portion (13) are annular, and the length of two branches of main rope (20) bottom end is equal.

3. A water taking device for inclining tests of a ship according to claim 1, characterized in that: The cover structure includes rigid cover plate (40), the lower surface of the rigid cover plate (40) is provided with plunger (41) for blocking the top opening (12) of the cylindrical container (10);The upper surface of the rigid cover plate (40) is provided with eye ring (42), for and auxiliary rope (21) connection.

4. A water taking device for inclining tests of a ship according to claim 1, characterized in that: The cover structure is circular flexible cover (50);The diameter of flexible cover (50) is greater than the top outer diameter of the cylindrical container (10), and the lower surface of the flexible cover (50) is used to fit the top surface of the cylindrical container (10), and the lower surface edge of the flexible cover (50) is provided with a ring of annular edge (51);The inner diameter of the edge (51) is so that when the flexible cover (50) is installed on the top of the cylindrical container (10), the edge (51) surrounds the top outer edge of the cylindrical container (10), and forms interference fit;The upper surface of the flexible cover (50) is provided with mounting ring (52), for and auxiliary rope (21) connection.

5. A water taking device for inclining tests of a ship according to claim 4, characterized in that: The mounting ring (52) is adjacent to the edge of the flexible cover.

6. A water taking device for inclining tests of a ship according to claim 1, characterized in that: The edge of the float plug (30) is adapted to the internal space of the cylindrical container (10), and a plurality of water guide notches (31) are opened in the edge;A plurality of water guide grooves (32) are opened in the bottom surface of the float plug (30) and are communicated with the water guide notches (31).

7. A water taking device for inclining tests of a ship according to claim 1, characterized in that: A raised limiting portion (14) is arranged on the inner edge of the top opening (12) of the cylindrical container (10), for limiting the float height of the float plug (30).

8. A ship inclining test water taking device according to claim 7, characterised in that: The top surface of the float plug (30) is provided with circular boss structure (33), and the diameter of the boss structure (33) is less than the inner diameter of the limiting portion (14).

9. A water collection device for inclining tests of a ship according to claim 1, characterized in that: The cylindrical container (10) is made of steel pipe, and the counterweight (11) is a metal counterweight filled in the bottom of the cylindrical container (10).

10. A water taking device for inclining tests of a ship according to claim 1, characterized in that: The bottom of the cylindrical container (10) is welded with bottom plate (15), and the outer diameter of the bottom plate (15) is greater than the outer diameter of the cylindrical container (10).

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