An underwater construction vessel sealing device

Abstract

The utility model discloses an underwater engineering ship plugging device relates to ship plugging technical field. This underwater engineering ship plugging device, including the plugging device apron, the inside of plugging device apron is provided with first screw rod, and first screw rod penetrates the inside of plugging device apron and extends to the below of plugging device apron, and the bottom fixedly connected with the cross tension seat of first screw rod, the outer surface of cross tension seat is equidistant fixedly connected with four tensioning screws in the way of circular array, and the outer surface of four tensioning screws all has the tensioning nut of threadedly sleeving, and the outer surface of four tensioning screws all has the adjustable top head of sliding sleeve joint, and every tensioning nut and all and corresponding adjustable top head fixedly connected, adopt the radial tensioning mechanism of cross tension seat cooperation four adjustable top head, can quickly adapt to the reliable fixing of different pipe diameter's side drainage short pipe, and the operation is simple and easy to save maintenance cost, and the construction period is shortened and promotes the ship operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of ship sealing technology, and in particular to a sealing device for underwater engineering vessels. Background Technology

[0002] In coastal dredging projects, most construction areas are being developed for the first time, and the underwater environment is highly concealed. The use of acoustic instruments for preliminary surveys in the early stages of construction has certain limitations, resulting in relatively little accumulation of real hydrological environmental information. Dredging vessels serve as pioneers in the construction of these waterways, directly facing complex and unfamiliar underwater conditions. The unconventional environment constantly tests the safety of dredging vessels. Therefore, the probability of leakage and collision failures in the underwater hull and related equipment of dredging vessels is much higher than that of conventional seagoing vessels under these circumstances. Safely and efficiently resolving underwater leakage and other failures on the hull of dredging vessels in a short period of time is a key focus of vessel management.

[0003] For underwater engineering on ships, the conventional repair procedure involves bringing the ship into the shipyard for dock repairs, conducting hydrostatic tests on key underwater repair items, replacing the outlet mesh of the titanium plate cooler, and confirming that the valve model and material match the drawings and that it holds a China Classification Society ship product certificate before replacing the valve. The valve must pass a 0.7MPa hydrostatic test in the workshop, with no leakage after a standard 30-minute test, before it can be installed and used on board. The advantages of this method are that the entire process is completed in the dock, ensuring safety, quality, and no seawater leakage. The disadvantages are high economic costs, long repair cycles, and more severe direct losses due to the ship's shutdown caused by repairs. Therefore, an underwater engineering vessel sealing device is needed. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide an underwater engineering vessel sealing device that can solve the problems of high economic cost of repair engineering, long repair cycle, and more serious direct losses caused by the shutdown of the entire vessel due to repair.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an underwater engineering vessel plugging device, comprising a plugging device cover plate, wherein a first screw is provided inside the plugging device cover plate, the first screw penetrating the interior of the plugging device cover plate and extending to the bottom of the plugging device cover plate, a cross tensioning seat is fixedly connected to the bottom of the first screw, four tensioning screws are fixedly connected at equal intervals in a circular array on the outer surface of the cross tensioning seat, tensioning nuts are threaded onto the outer surface of each of the four tensioning screws, and adjustable heads are slidably sleeved onto the outer surface of each of the four tensioning screws, and each tensioning nut is fixedly connected to a corresponding adjustable head.

[0006] Preferably, a first gasket is fixedly connected to the top of the cover plate of the sealing device, and a second gasket is fixedly connected to the top of the first gasket.

[0007] Preferably, the outer surface of the first screw is threaded with a second nut, and the surface of the first screw is threaded with a first nut.

[0008] Preferably, the first nut is located below the second nut, and the bottom of the first nut is in contact with the second washer.

[0009] Preferably, the first screw is made of carbon steel.

[0010] Preferably, both the tensioning screw and the tensioning nut are of model M.

[0011] Preferably, both the first nut and the second nut are of type M.

[0012] Preferably, the adjustable head is made of carbon steel.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This underwater engineering vessel plugging device adopts a radial tensioning mechanism with a cross-shaped tensioning seat and four adjustable jacks. It can quickly adapt to the side drainage short pipes of different diameters and achieve reliable fixation. Through the precision height adjustment system of the first screw and double nuts, the plugging cover can be accurately aligned with the drainage outlet position. The carbon steel structural components and standard threaded components form a high-strength sealing system. The entire device is easy to operate, and a single diver can complete the underwater installation. It enables rapid plugging and maintenance of underwater equipment without entering the dry dock. Compared with the traditional dry dock maintenance method, it can save maintenance costs, shorten the construction cycle, and improve the efficiency of ship operation. It solves the problems of high economic costs, long repair cycles, and more serious direct losses caused by the shutdown of the entire ship due to repairs. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the main body of this utility model;

[0017] Figure 2 For the present utility model Figure 1 Schematic diagram at point A in the middle;

[0018] Figure 3 This is a bottom view of the present invention;

[0019] Figure 4 This is a schematic diagram of the cross tensioning seat of this utility model.

[0020] Reference numerals in the attached drawings: 1. Cover plate of the sealing device; 2. Sealing gasket; 3. First gasket; 4. Second gasket; 5. First nut; 6. Second nut; 7. First screw; 8. Cross tensioning seat; 9. Tensioning screw; 10. Tensioning nut; 11. Adjustable jack. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] Please see Figure 1-4 This utility model provides a technical solution: an underwater engineering vessel plugging device, including a plugging device cover plate 1, a first screw 7 is provided inside the plugging device cover plate 1, the first screw 7 penetrates the interior of the plugging device cover plate 1 and extends to the bottom of the plugging device cover plate 1, a cross tensioning seat 8 is fixedly connected to the bottom of the first screw 7, four tensioning screws 9 are fixedly connected at equal intervals in a circular array on the outer surface of the cross tensioning seat 8, tensioning nuts 10 are threaded onto the outer surface of each of the four tensioning screws 9, and adjustable heads 11 are slidably sleeved onto the outer surface of each of the four tensioning screws 9, and each tensioning nut 10 is fixedly connected to a corresponding adjustable head 11.

[0026] Furthermore, a first gasket 3 is fixedly connected to the top of the sealing device cover plate 1, a second gasket 4 is fixedly connected to the top of the first gasket 3, a second nut 6 is threaded onto the outer surface of the first screw 7, a first nut 5 is threaded onto the surface of the first screw 7, the first nut 5 is located below the second nut 6, and the bottom of the first nut 5 is in contact with the second gasket 4. The first screw 7 is made of carbon steel, the tensioning screw 9 and the tensioning nut 10 are both M24, the first nut 5 and the second nut 6 are both M16, and the adjustable head 11 is made of carbon steel.

[0027] Furthermore, after the divers bring the device underwater, they first insert the cross tensioning seat 8 into the side drain pipe. By rotating the four tensioning nuts 10, the adjustable head 11 is moved radially, so that the adjustable head 11 fits tightly against the pipe wall to achieve initial fixation. Then, by rotating the first screw 7, the height of the sealing device cover plate 1 is adjusted so that the cover plate is accurately aligned with the drain outlet. The cover plate is then locked in place by the cooperation of the first nut 5 and the second nut 6. Finally, the sealing plate pressure bolts are tightened to make the sealing device cover plate 1 press tightly against the drain outlet to form a seal. The valve can be disassembled and replaced inside the cabin, realizing safe repair of underwater equipment without entering the dry dock, which is extremely economical.

[0028] Furthermore, the radial tensioning mechanism, employing a cross-shaped tensioning seat and four adjustable heads, can quickly adapt to and reliably fix short side drainage pipes of different diameters. A precision height adjustment system using the first screw and double nuts ensures accurate alignment of the sealing cover with the drainage outlet. Carbon steel structural components, combined with standard threaded assemblies, form a high-strength sealing system. The entire device is easy to operate; a single diver can complete underwater installation, enabling rapid sealing and repair of underwater equipment without docking. Compared to traditional docking repair methods, this saves on maintenance costs, shortens the construction cycle, and improves ship operational efficiency. It solves the problems of high repair costs, long repair cycles, and even more severe direct losses due to ship downtime caused by repairs.

[0029] Structural Description: Sealing Device Cover Plate 1: As the main structure of the entire device, it is used to cover and seal the ship's side drainage outlet to prevent water from entering the cabin;

[0030] First gasket 3: Located on the top of the cover plate, it is used to distribute the pressure when the nut is tightened and to improve the sealing of the device;

[0031] Second gasket 4: superimposed on the first gasket, further enhancing pressure buffering and sealing effects, and improving the device's sealing performance;

[0032] First nut 5: It works with the first screw to form the first locking mechanism, which restricts the axial displacement of the cover plate and enhances stability;

[0033] Second nut 6: Forms a double locking above the first nut to prevent the device from loosening under the impact of water flow;

[0034] First screw 7: Passes through the cover plate and connects to the cross tensioner, and achieves precise control of the cover plate height through thread adjustment;

[0035] Cross tensioner 8: As the core component of the radial tensioning mechanism, it has four tensioning screws evenly distributed to provide stable support force;

[0036] Tensioning screw 9: Extends circumferentially along the cross tensioning seat and drives the adjustable mandrel to make radial displacement through threaded transmission;

[0037] Tensioning nut 10: It rotates in conjunction with the tensioning screw to convert the rotational motion into the linear motion of the adjustable jack;

[0038] Adjustable top head 11: It directly contacts the inner wall of the drainage short pipe and generates frictional fixing force through radial expansion to ensure the positioning of the device.

[0039] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A sealing device for underwater engineering vessels, comprising a sealing device cover plate (1), characterized in that: The sealing device cover plate (1) is provided with a first screw (7) inside. The first screw (7) penetrates the inside of the sealing device cover plate (1) and extends to the bottom of the sealing device cover plate (1). A cross tensioning seat (8) is fixedly connected to the bottom of the first screw (7). Four tensioning screws (9) are fixedly connected at equal intervals on the outer surface of the cross tensioning seat (8) in a circular array. Tensioning nuts (10) are threaded onto the outer surface of each of the four tensioning screws (9). Adjustable heads (11) are slidably sleeved onto the outer surface of each of the four tensioning screws (9). Each tensioning nut (10) is fixedly connected to the corresponding adjustable head (11).

2. A subsea construction vessel plug according to claim 1, characterised in that: The top of the sealing device cover plate (1) is fixedly connected to a first gasket (3), and the top of the first gasket (3) is fixedly connected to a second gasket (4).

3. An underwater construction vessel plug according to claim 1, characterized in that: The outer surface of the first screw (7) is threaded with a second nut (6), and the surface of the first screw (7) is threaded with a first nut (5).

4. An underwater construction vessel plug according to claim 3, characterized in that: The first nut (5) is located below the second nut (6), and the bottom of the first nut (5) is in contact with the second washer (4).

5. A containment device for an underwater construction vessel according to claim 1, characterized in that: The first screw (7) is made of carbon steel.

6. A containment device for an underwater construction vessel according to claim 1, characterized in that: The tensioning screw (9) and tensioning nut (10) are both of model M24.

7. An underwater construction vessel plug according to claim 3, characterized in that: The first nut (5) and the second nut (6) are both M16.

8. The underwater engineering vessel sealing device according to claim 1, characterized in that: The adjustable top head (11) is made of carbon steel.

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