Underwater welding channel bottom sealing structure

Abstract

The utility model discloses a bottom sealing structure of an underwater welding channel, which relates to the technical field of marine engineering and comprises the underwater welding channel tightly attached to the bottom of an underwater structure to form a sealed space; the bottom sealing structure clings to the bottom of the underwater structure to form a closed environment space; channel ballast tanks are arranged on the two sides of the underwater welding channel. According to the bottom sealing structure of the underwater welding channel, the bottom sealing structure is arranged on the side, making contact with the bottom of the underwater structure, of the underwater welding channel, and the underwater welding channel and the underwater structure can be tightly attached to form a sealed space. The immersion depth of the underwater welding channel is adjusted through the channel ballast tank, the underwater welding channel is connected with the bottom of the underwater structure, buoyancy is provided for pressing a bottom sealing structure, it is guaranteed that a closed space is formed between the welding channel and the bottom of the structure, workers can conduct construction operation on the bottom of the underwater structure in the channel working cabin, construction safety is good, construction efficiency is high, and construction cost is low. The underwater welding channel can be reused, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ship and ocean engineering, in particular to a bottom sealing structure of an underwater welding channel. Background Art

[0002] During the construction, repair and operation of underwater structures such as ships and marine engineering, the construction and repair of floating structures need to be transferred from land construction to underwater construction or the floating structures are already in operation underwater and it is difficult to transfer to land for closure and repair operations. Therefore, the bottom of the floating structure needs to be constructed, closed and welded underwater.

[0003] Underwater construction has poor safety, welding is difficult to perform, and construction quality is difficult to meet requirements. Workers have difficulty in underwater construction, their vision is impaired, and their sustainable working time is short, resulting in long repair cycles and low repair efficiency. Utility Model Content

[0004] The utility model aims to at least solve the technical problems existing in the prior art of "poor safety of underwater construction work, great difficulty for workers in underwater construction, impaired vision, short sustainable working time, long repair cycle and low repair efficiency". To this end, the utility model proposes a bottom sealing structure of an underwater welding channel, which can form a sealed construction space underwater, so that workers can carry out construction work in the channel, with high construction efficiency, improved construction safety, and can be reused to reduce construction costs.

[0005] The underwater welding channel bottom sealing structure according to some embodiments of the utility model is applied to the construction and maintenance of underwater structures and is installed at the bottom of the underwater structure; it includes:

[0006] An underwater welding channel is formed by connecting a channel tail, a channel head and a channel middle part, and the underwater welding channel is tightly fitted with the bottom of the underwater structure to form a sealed space;

[0007] A bottom sealing structure, disposed between the underwater welding channel and the bottom of the underwater structure, and used to closely adhere to the bottom of the underwater structure to form a closed environment space;

[0008] Wherein, channel ballast tanks are arranged on both sides of the underwater welding channel, a channel working cabin is arranged between the two channel ballast tanks, and the bottom sealing structure is arranged at the top channel deck of the channel ballast tanks; the channel ballast tanks are used to adjust the draft depth of the underwater welding channel and provide buoyancy so that the underwater welding channel fits tightly with the bottom of the underwater structure to form a sealed space.

[0009] According to some embodiments of the present invention, the length of the middle portion of the channel is greater than the length of the bottom of the underwater structure, and the total height of the underwater welding channel is 10m.

[0010] According to some embodiments of the utility model, the two ends of the middle portion of the channel are respectively welded to the channel head and the channel tail, and the channel head and the channel tail are higher than the liquid surface and are divided into the freeboard of the underwater welding channel.

[0011] According to some embodiments of the present utility model, the bottom sealing structure adopts a sealing rubber structure, and the compression amount of the bottom sealing structure when under pressure is 20mm to 30mm.

[0012] According to some embodiments of the utility model, the channel deck on the top of the channel ballast tank on each side is provided with two groups of bottom sealing structures, and the two groups of bottom sealing structures are arranged at intervals.

[0013] According to some embodiments of the utility model, the bottom sealing structure includes a sealing rubber strip and a sealing rubber base, the sealing rubber base is fixedly welded on the channel deck, and the sealing rubber strip is installed in the sealing rubber base.

[0014] According to some embodiments of the utility model, a sealing pressure plate is provided above the sealing rubber base, and when the sealing rubber strip is installed in the sealing rubber base, the sealing pressure plate is welded to the top of the sealing rubber base and presses the sealing rubber strip.

[0015] According to some embodiments of the present invention, the thickness of the sealing pressure plate is 1.0 mm to 3.0 mm.

[0016] According to some embodiments of the utility model, the sealing rubber strip adopts a hollow rubber structure, and the wall thickness of the sealing rubber strip is greater than 20 mm.

[0017] According to some embodiments of the utility model, end sealing rubbers are provided on the channel deck at both ends of the middle part of the channel, and the end sealing rubbers and the bottom sealing structure form an integral bottom sealing structure.

[0018] According to some embodiments of the utility model, the bottom sealing structure of the underwater welding channel has at least the following beneficial effects: the bottom sealing structure is arranged on the side where the underwater welding channel contacts the bottom of the underwater structure, so that the two can fit closely together to form a sealed space. The draft of the underwater welding channel is adjusted by the channel ballast tank to connect with the bottom of the underwater structure and provide buoyancy to compress the bottom sealing structure, so as to ensure that a closed space is formed between the welding channel and the bottom of the structure. The staff can perform construction work on the bottom of the underwater structure in the channel working cabin, so that the construction safety is good, the construction efficiency is high, and the underwater welding channel can be reused, thereby reducing the construction cost.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 This is a bottom sealing arrangement diagram of an underwater welding channel according to an embodiment of the utility model;

[0022] Figure 2 A side view of the bottom seal of an underwater welding channel according to an embodiment of the utility model;

[0023] Figure 3 A bottom sealing plan view of an underwater welding channel according to an embodiment of the utility model;

[0024] Figure 4 This is a cross-sectional view of the sealing of the underwater welding channel according to an embodiment of the utility model;

[0025] Figure 5 A cross-sectional view of the sealing structure of an underwater welding channel according to an embodiment of the utility model;

[0026] Figure 6 This is a diagram of the end sealing structure of an underwater welding channel according to an embodiment of the utility model;

[0027] Figure 7 This is a bottom sealing structure diagram of an underwater welding channel according to an embodiment of the utility model.

[0028] Reference numerals:

[0029] underwater structure 100, underwater structure bottom 110,

[0030] Underwater welding channel 200, channel tail 210, channel bow 220, channel middle 230, channel deck 231, channel ballast tank 240, channel working cabin 250,

[0031] Bottom sealing structure 300, sealing rubber strip 310, sealing rubber base 320, sealing pressure plate 330,

[0032] End sealing rubber 400. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, top, bottom, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Reference below Figure 1-Figure 7 The bottom sealing structure of an underwater welding channel according to an embodiment of the utility model is described.

[0038] like Figure 1-Figure 7 As shown, the underwater welding channel bottom sealing structure is mainly used in the construction and maintenance of the underwater structure 100, and is installed at the bottom 110 of the underwater structure when in use. The underwater welding channel bottom sealing structure is constructed according to different floating structures and is used for a single floating structure for a long time, effectively reducing the construction cost.

[0039] Specifically, the underwater welding channel bottom sealing structure includes an underwater welding channel 200 and a bottom sealing structure 300. The underwater welding channel 200 is formed by connecting the channel tail 210, the channel head 220 and the channel middle 230. The underwater welding channel 200 is closely fitted with the underwater structure bottom 110 to form a sealed space. The bottom sealing structure 300 is arranged between the underwater welding channel 200 and the underwater structure bottom 110, and is used to closely fit the underwater structure bottom 110 to form a closed environment space. The underwater welding channel 200 and the underwater structure bottom 110 are fitted, and the bottom sealing structure 300 is used to make the two closed environment spaces.

[0040] Among them, channel ballast tanks 240 are arranged on both sides of the underwater welding channel 200, a channel working cabin 250 is arranged between the two channel ballast tanks 240, and a bottom sealing structure 300 is arranged at the top channel deck 231 of the channel ballast tanks 240; the channel ballast tanks 240 are used to adjust the draft depth of the underwater welding channel 200 and provide buoyancy so that the underwater welding channel 200 is tightly fitted with the bottom 110 of the underwater structure to form a sealed space.

[0041] The channel ballast tank 240 provides buoyancy for the underwater welding channel 200 as a whole. At the same time, the channel ballast tank 240 can adjust the underwater horizontal state and draft height of the underwater welding channel 200 as a whole through ballast water adjustment to achieve a good underwater construction state. The underwater buoyancy of the channel ballast tank 240 is adjusted by adjusting the load. It forms a sealed space with the construction area of ​​the bottom 110 of the underwater structure, thereby meeting the sealed working environment requirements of the channel working cabin 250.

[0042] After the underwater welding channel 200 is sealed and connected to the bottom 110 of the underwater structure, the staff can perform construction work on the area of ​​the underwater structure 100 that needs maintenance in the channel working cabin 250. The staff can work directly in the channel, and the work intensity is lower than that of underwater work, and they can work for a long time, shortening the construction period. In addition, the underwater welding channel 200 has a low construction cost and no consumables are required for subsequent use. Compared with the cost of existing underwater operations, the sealing structure at the bottom of the underwater welding channel of this embodiment can be repeatedly used, which is convenient for production and construction, and improves the efficiency of ship and marine engineering repair and construction.

[0043] During construction, underwater floating bodies such as ships or underwater structures 100 are connected to the underwater welding channel 200 to form a sealed space, which can effectively isolate the water body and prevent workers from working directly in the water environment. The water depth can generally reach 10m, and the length and width of the construction can reach 100m. The sealing contact surface is consistent with the linearity of the contact surface of the underwater structure 100, that is, the contact surface can be designed as a plane contact or a curved contact design. The length of the underwater structure 100 is L1, and L1 can reach 100m, which is the inner length of the main body of the underwater welding channel 200. During design, L is greater than L1 to ensure that the underwater welding channel 200 can cover the underwater structure 100.

[0044] The underwater welding channel 200 can provide buoyancy underwater, and at the same time, a bottom sealing structure 300 of the underwater structure bottom 110 can be formed within the length L. Under the action of the buoyancy provided by the underwater welding channel 200, the bottom sealing structure 300 provides upward buoyancy and is close to the underwater structure bottom 110, thereby achieving the effect of forming a closed environment space at the underwater structure bottom 110, thereby achieving the purpose of providing a closed construction environment space at the underwater structure bottom 110.

[0045] In some embodiments of the present invention, Figure 1-Figure 3 As shown, the length of the middle portion 230 of the channel is greater than the length of the bottom 110 of the underwater structure, and the total height of the underwater welding channel 200 is 10 m.

[0046] In some embodiments of the present invention, Figure 1-Figure 3 As shown, the two ends of the middle part 230 of the channel are respectively welded to the channel head 220 and the channel tail 210, and the channel head 220 and the channel tail 210 above the liquid surface are divided into the freeboard of the underwater welding channel 200.

[0047] Specifically, the underwater welding channel 200 is an independent floating structure, and the channel tail 210 and the channel head 220 are above the water surface, which is the freeboard part of the underwater welding channel 200. The underwater structure bottom 110 and the underwater welding channel 200 are arranged through the channel bottom sealing structure 300 to form an underwater closed construction space environment.

[0048] In some embodiments of the present invention, Figure 1-Figure 4 As shown, the bottom sealing structure 300 adopts a sealing rubber structure, and the compression amount of the bottom sealing structure 300 when under pressure is 20 mm to 30 mm.

[0049] Specifically, the bottom sealing structure 300 is installed at the contact surface between the bottom 110 of the underwater structure and the underwater welding channel 200. The bottom sealing structure 300 is pressed and contacted to form a sealed space, which can effectively isolate the water body and avoid direct construction work in the water environment. The main material of the bottom sealing structure 300 is sealing rubber, and the main performance index of the sealing rubber is tensile strength ≥ 150Kg / cm 2 It has good resilience and tear resistance. The compression amount is 20mm to 30mm when the pressure is 1.5t / m.

[0050] In a further embodiment, Figure 4 and Figure 5 As shown, the channel deck 231 on the top of each side channel ballast tank 240 is provided with two sets of bottom sealing structures 300, and the two sets of bottom sealing structures 300 are arranged at intervals.

[0051] Specifically, the bottom sealing structure 300 is arranged on the channel deck 231, and two bottom sealing structures 300 are arranged on each channel deck 231 to form two watertight structures, which are tightly attached to the bottom 110 of the underwater structure to form a sealing structure.

[0052] The spacing between the bottom sealing structures 300300 on each side is a1, and the spacing between the bottom sealing structures 300300 on the inner side is a2.

[0053] In some embodiments of the present invention, Figure 7 As shown, the bottom sealing structure 300 includes a sealing rubber strip 310 and a sealing rubber base 320 . The sealing rubber base 320 is fixedly welded on the channel deck 231 , and the sealing rubber strip 310 is installed in the sealing rubber base 320 .

[0054] Specifically, the sealing rubber base 320 is fixed to the channel deck 231 and provides an installation position for the sealing rubber strip 310. The sealing rubber strip 310 provides a closed construction space between the underwater structure bottom 110 and the underwater welding channel 200. The sealing rubber base 320 uses a channel steel structure to ensure the overall installation accuracy of the bottom sealing structure 300. Its specifications use channel steel No. 10 to channel steel profiles, and the material is Q235.

[0055] In a further embodiment, Figure 7 As shown, a sealing pressure plate 330 is disposed above the sealing rubber base 320 . When the sealing rubber strip 310 is installed in the sealing rubber base 320 , the sealing pressure plate 330 is welded to the top of the sealing rubber base 320 and presses the sealing rubber strip 310 .

[0056] Specifically, the sealing pressing plate 330 is used to fix the sealing rubber strip 310 and the sealing rubber base 320 , and the sealing rubber strip 310 is pressed by the sealing pressing plate 330 .

[0057] In a further embodiment, Figure 7 As shown, the thickness of the sealing plate 330 is 1.0mm to 3.0mm. Specifically, the sealing plate 330 is a steel flat iron, which is fixed to the webs on both sides above the sealing rubber base 320 by spot welding, and presses the sealing rubber strip 310. This prevents the sealing rubber strip 310 from floating and deviating during underwater construction. The thickness of the steel flat iron of the sealing plate 330 is 1mm to 3mm, the width is 10mm to 20mm, and the material is Q235.

[0058] In some embodiments of the present invention, Figure 7 As shown, the sealing rubber strip 310 adopts a hollow rubber structure, and the wall thickness of the sealing rubber strip 310 is greater than 20mm. Specifically, the shape of the sealing rubber strip 310 is similar to a semi-cylindrical structure, and the wall thickness design value is greater than 20mm. The hollow size design value is greater than 40mm, and the design meets the requirement that the pressing stroke is not less than 50mm.

[0059] In some embodiments of the present invention, Figure 6 As shown, it includes end sealing rubbers 400, which are arranged at the channel decks 231 at both ends of the middle part 230 of the channel. The end sealing rubbers 400 and the bottom sealing structure 300 form a bottom integral sealing structure.

[0060] Specifically, the end sealing rubber 400 is arranged at both ends of the middle part 230 of the channel to form an end sealing structure, which together with the bottom sealing structure 300 constitutes the bottom integral sealing structure. The main material of the end sealing rubber 400 is rubber, and the main performance index of rubber is: tensile strength ≥ 150Kg / cm 2 It has good resilience and tear resistance, and the compression amount is 20mm to 30mm when the pressure is 1.5t / m.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A bottom sealing structure of an underwater welding channel, applied to the construction and maintenance of an underwater structure (100), and installed at the bottom (110) of the underwater structure; characterized in that: include: An underwater welding channel (200) is formed by connecting a channel tail (210), a channel head (220) and a channel middle (230), wherein the underwater welding channel (200) is tightly fitted to the bottom (110) of the underwater structure to form a sealed space; A bottom sealing structure (300) is disposed between the underwater welding channel (200) and the bottom (110) of the underwater structure, and is used to closely adhere to the bottom (110) of the underwater structure to form a closed environment space; Wherein, channel ballast tanks (240) are arranged on both sides of the underwater welding channel (200), a channel working cabin (250) is arranged between the two channel ballast tanks (240), and the bottom sealing structure (300) is arranged at the top channel deck (231) of the channel ballast tanks (240); the channel ballast tanks (240) are used to adjust the draft of the underwater welding channel (200) and provide buoyancy so that the underwater welding channel (200) and the bottom (110) of the underwater structure are tightly fitted to form a sealed space.

2. The underwater welding channel bottom sealing structure according to claim 1, characterized in that: The length of the middle portion (230) of the channel is greater than the length of the bottom (110) of the underwater structure, and the total height of the underwater welding channel (200) is 10 m.

3. The underwater welding channel bottom sealing structure according to claim 2, characterized in that: The two ends of the middle portion (230) of the channel are respectively connected to the channel head (220) and the channel tail (210) by welding, and the channel head (220) and the channel tail (210) are higher than the liquid surface to form the freeboard of the underwater welding channel (200).

4. The underwater welding channel bottom sealing structure according to claim 1, characterized in that: The bottom sealing structure (300) adopts a sealing rubber structure, and the compression amount of the bottom sealing structure (300) when under pressure is 20 mm to 30 mm.

5. The underwater welding channel bottom sealing structure according to claim 4, characterized in that: The channel deck (231) on the top of the channel ballast tank (240) on each side is provided with two groups of bottom sealing structures (300), and the two groups of bottom sealing structures (300) are arranged at intervals.

6. The underwater welding channel bottom sealing structure according to claim 1, characterized in that: The bottom sealing structure (300) comprises a sealing rubber strip (310) and a sealing rubber base (320); the sealing rubber base (320) is fixedly welded on the channel deck (231), and the sealing rubber strip (310) is installed in the sealing rubber base (320).

7. The underwater welding channel bottom sealing structure according to claim 6, characterized in that: A sealing pressure plate (330) is arranged above the sealing rubber base (320). When the sealing rubber strip (310) is installed in the sealing rubber base (320), the sealing pressure plate (330) is welded to the top of the sealing rubber base (320) and presses the sealing rubber strip (310).

8. The underwater welding channel bottom sealing structure according to claim 7, characterized in that: The sealing pressing plate (330) has a thickness of 1.0 mm to 3.0 mm.

9. The underwater welding channel bottom sealing structure according to claim 6, characterized in that: The sealing rubber strip (310) adopts a hollow rubber structure, and the wall thickness of the sealing rubber strip (310) is greater than 20 mm.

10. The underwater welding channel bottom sealing structure according to claim 1, characterized in that: It comprises end sealing rubbers (400) arranged on the channel deck (231) at both ends of the middle part (230) of the channel, and the end sealing rubbers (400) and the bottom sealing structure (300) form a bottom integral sealing structure.

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