Communicating hole plugging device for large-depth underwater structure

Abstract

The utility model discloses a communicating hole plugging device of a large-depth underwater structure. The communicating hole plugging device comprises two plugging pieces and at least one fastening assembly. The plugging piece comprises a bearing plate, a rubber layer and a limiting part; the rubber layer is attached to one side of the bearing plate; the outer contour size of the overlapped part of the rubber layer and the bearing plate is greater than the diameter of the communicating hole; the rubber layer is closed on the outer ring in the circumferential direction. A limiting part is fixed to the side, facing the rubber layer, of the bearing plate. The size of the limiting part in the thickness direction of the bearing plate is greater than the thickness of the rubber layer; a geometric figure formed by connecting the outer contours of the limiting parts is internally connected to a cross section circle of the communicating hole; the outer side edge of the limiting part is perpendicular to the bearing plate; when the communicating hole is blocked, the limiting part is clamped on the hole wall of the communicating hole and is in limiting fit with the communicating hole in the radial direction; the two plugging pieces are attached to the two ports of the communicating hole through the limiting parts; the fastening assembly penetrates through the two plugging pieces in the axial direction of the communicating hole so that the plugging pieces can be fastened to the two sides of the communicating hole.

Description

Technical Field

[0001] This utility model relates to the field of underwater engineering construction technology, and in particular to a device for sealing the connecting holes of deep underwater structures. Background Technology

[0002] During the lowering of underwater structures such as steel caissons, it is crucial to maintain the internal water level consistent with the external level. In practice, this is often achieved by installing connecting holes in the caisson wall to balance the internal and external water levels. After lowering is complete, these connecting holes must be sealed to prevent leakage and ensure proper subsequent construction within the structure. Therefore, effectively sealing these connecting holes is essential for the successful construction of underwater structures.

[0003] Currently, the main methods for sealing connecting holes are rubber ball sealing and pipe plug sealing. Rubber ball sealing involves using an inflatable rubber ball to seal the pipe, suitable for temporary sealing of smaller pipe valves. However, deep-sea connecting holes often need to be larger to ensure water intake efficiency and require permanent sealing; therefore, rubber ball sealing is unsuitable for sealing connecting holes in deep-sea structures. Pipe plug sealing achieves sealing by compressing a rubber ring, causing it to generate radial elastic restoring force and tightly adhere to the pipe wall. However, the rubber ring used in pipe plug sealing is made of a flexible material, which may become misaligned when inserted into the pipe, resulting in poor sealing performance. To address these issues, this paper proposes a connecting hole sealing device suitable for deep-sea structures. Utility Model Content

[0004] The main technical problem to be solved by this utility model is to provide a device for sealing the connecting holes of deep underwater structures, which can seal the connecting holes in a tight and stable manner.

[0005] To address the aforementioned technical problems, this utility model provides a device for sealing the connecting holes of deep-sea underwater structures, comprising two sealing components and at least one fastening assembly; the sealing component includes a pressure-bearing plate, a rubber layer, and a limiting part.

[0006] The rubber layer is attached to one side of the pressure plate; the outer contour dimension of the portion of the rubber layer overlapping the pressure plate is larger than the diameter of the connecting hole; the rubber layer is closed in the circumferential direction on the outer ring;

[0007] The pressure plate has the limiting part fixed on the side facing the rubber layer; the dimension of the limiting part along the thickness direction of the pressure plate is greater than the thickness of the rubber layer; the geometric shape constructed by connecting the outer contours of the limiting part is inscribed in the cross-sectional circle of the connecting hole; the outer side of the limiting part is perpendicular to the pressure plate;

[0008] When the connecting hole is blocked: the limiting part is engaged with the hole wall of the connecting hole and performs a radial limiting fit with the connecting hole; the two blocking parts are attached to the two ports of the connecting hole through the limiting part; the fastening assembly passes through the two blocking parts along the axial direction of the connecting hole to fasten the blocking parts to both sides of the connecting hole.

[0009] In a preferred embodiment, the limiting portion includes a plurality of limiting blocks; the outer side of the limiting blocks is perpendicular to the pressure plate; the plurality of limiting blocks are spaced apart along the circumferential direction, and the circle formed by connecting the outermost blocks has a diameter equal to the diameter of the connecting hole.

[0010] In a preferred embodiment, the rubber layer is provided with a plurality of limiting holes through it along the thickness direction; the size and relative position of the limiting holes match the limiting block.

[0011] In a preferred embodiment, the pressure plate is provided with a first clearance through hole, and the rubber layer is provided with a second clearance through hole; the first clearance through hole and the second clearance through hole are aligned; the first clearance through hole and the second clearance through hole are located inside the outer circle of the limiting part.

[0012] In a preferred embodiment, the fastening assembly includes a screw and a nut; the screw passes through the first clearance through hole and the second clearance through hole on the two side sealing members along the axial direction of the connecting hole; the nut is sleeved on the end of the screw and, through thread engagement with the screw, presses the pressure plate toward the connecting hole.

[0013] In a preferred embodiment, the fastening assembly further includes a washer; the washer is sleeved on the screw and located between the pressure plate and the nut.

[0014] In a preferred embodiment, the fastening assembly includes a steel strand, a locking member, and a gasket; the steel strand is tensioned after passing through the first clearance through hole and the second clearance through hole on the two side sealing members along the axial direction of the connecting hole; the locking member is fixed to the steel strand from both sides and engages with the steel strand along the axial direction; the steel strand pulls the locking member inward by elastic restoring force, so that the locking member abuts against the surface of the pressure plate from the side opposite to the connecting hole; the gasket is disposed between the locking member and the pressure plate.

[0015] In a preferred embodiment, there are two fastening components, which are symmetrically arranged about the center point of the limiting portion.

[0016] In a preferred embodiment, the rubber layer and the pressure plate are circular with the same diameter.

[0017] In a preferred embodiment, the pressure plate is a steel plate.

[0018] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0019] The device provided by this utility model has a limiting part fixed on the side where the rubber layer is installed. When the sealing member is installed on both sides of the connecting hole, the limiting part is engaged with the hole wall of the connecting hole, so that the pressure plate and the rubber layer do not tilt or shake, thereby giving the device better sealing performance.

[0020] The device provided by this utility model secures the sealing components on both sides by pulling the fastening assembly axially along the connecting hole. This connection method is direct and reliable, enabling the device to achieve long-term stable sealing. Simultaneously, the gasket further improves the operational stability of the fastening assembly and the leak-proof performance of the device. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the device used to block the connecting hole in an embodiment of this utility model;

[0022] Figure 2 This is a partial explosion diagram of the device described in an embodiment of the present invention;

[0023] Figure 3 This is a side view of the device described in an embodiment of the present invention.

[0024] The markings in the diagram are as follows: 1-sealing component, 2-fastening assembly, 3-connecting hole, 4-pressure plate, 41-first clearance through hole, 5-limiting part, 51-limiting block, 6-rubber layer, 61-limiting hole, 62-second clearance through hole, 7-screw, 8-nut, 9-washer. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] like Figures 1-3 As shown, this utility model embodiment provides a sealing device for a connecting hole 3 in a deep underwater structure, used to seal the connecting hole 3 on the wall of a steel caisson used for water passage. To achieve sealing by cooperating on both sides of the connecting hole 3, the device includes two sealing components 1 and a fastening assembly 2; each sealing component 1 includes a pressure plate 4, a rubber layer 6, and a limiting part 5.

[0029] The pressure plate 4 is made of steel. The pressure plate 4 can be circular or any polygon, but it is necessary that its minimum inner dimension is greater than the diameter of the connecting hole 3. The pressure plate 4 has the limiting part 5 welded vertically on one side. One function of the limiting part 5 is to provide a locking function for the rubber layer 6 to be attached to the surface of the pressure plate 4. Another function of the limiting part 5 is to keep the rubber layer 6 on the pressure plate 4 and the port of the connecting hole 3 in contact without skewing through locking with the connecting hole 3. To meet this functional requirement, the limiting part 5 has the following structural features: (1) the geometric shape constructed by connecting the outer contours of the limiting part 5 is inscribed in the cross-sectional circle of the connecting hole 3; (2) the outer side of the limiting part 5 is perpendicular to the pressure plate 4; (3) the dimension of the limiting part 5 in the thickness direction of the pressure plate 4 is greater than the thickness of the rubber layer 6, so that the surface of the rubber layer 6 will be exposed later. In this way, when the pressure plate 4 and the rubber layer 6 are installed on both sides of the connecting hole 3, the limiting part 5 can extend into the connecting hole 3 and its outer edge just fits against the hole wall of the connecting hole 3, thus providing a radial limiting fit with the connecting hole 3. In other words, the limiting part 5 can always move along a direction parallel to the axis of the connecting hole 3 without swaying left or right. Furthermore, because the outer side of the limiting part 5 is perpendicular to the pressure plate 4, and the rubber layer 6 overlaps with the pressure plate 4, the rubber layer 6 can always be perpendicular to the axis of the connecting hole 3, that is, it fits tightly against the port of the connecting hole 3, thereby preventing water leakage due to misalignment.

[0030] It should be understood that there are multiple ways to simultaneously satisfy the above three structural features for the limiting part 5. For example... Figure 3 As shown, in this embodiment, the limiting part 5 is a separate structure, including four limiting blocks 51. The four limiting blocks 51 are arranged opposite each other in pairs, or they can be considered to be spaced apart in the circumferential direction. The distance between the outermost edges of two opposite limiting blocks 51 is equal to the diameter of the connecting hole 3. It is easy to see that the square formed by the lines connecting the four limiting blocks 51 is inscribed in the cross-sectional circle of the connecting hole 3. The outer edges of the limiting blocks 51 are perpendicular to the pressure plate 4. As long as the circle formed by the lines connecting the outer edges of the limiting blocks 51 is equal to the diameter of the connecting hole 3, the number of limiting blocks 51 should not be limited, and can be two, five, or more.

[0031] In this embodiment, the rubber layer 6 and the pressure plate 4 are circular with the same diameter and are aligned with each other. Figure 2As shown, the rubber layer 6 has four limiting holes 61 extending through it along its thickness direction. The relative positions of the four limiting holes 61 and the four limiting blocks 51 on the pressure plate 4 are matched. In this way, when the rubber layer 6 is installed on the side of the pressure plate 4 facing the limiting part 5, it can pass through the limiting blocks 51 and fit against the pressure plate 4. The core function of the rubber layer 6 is to block the penetration of water along the path from the port of the connecting hole 3 to the outer edge of the pressure plate 4. Therefore, the structural features of the rubber layer 6 are: (1) the outer contour dimension of the part of the rubber layer 6 overlapping with the pressure plate 4 is larger than the diameter of the connecting hole 3; (2) the rubber layer 6 is closed in the circumferential direction on the outer ring. Therefore, it is not difficult to understand that in other embodiments, the rubber layer 6 can also be a circular structure.

[0032] The fastener is a bolt assembly, including a screw 7, a nut 8, and a washer. For example... Figure 1 As shown, generally speaking, the screw 7 is vertically inserted through the two sealing members 1 and protrudes at least one end for a certain length. The nut 8 is fitted onto the exposed portion of the screw 7 and, through its threaded engagement with the screw 7, presses the sealing member 1 inward, thereby securing the two sealing members 1 to both ends of the connecting hole 3. Therefore, as... Figure 2As shown, the pressure plate 4 is provided with a first clearance through hole 41, and the rubber layer 6 is provided with a second clearance through hole 62. When the pressure plate 4 and the rubber layer 6 are installed together, the first clearance through hole 41 and the second clearance through hole 62 are aligned. The diameters of the first clearance through hole 41 and the second clearance through hole 62 are equal to the outer diameter of the screw 7. The first clearance through hole 41 and the second clearance through hole 62 are located inside the outer circle of the limiting part 5. If necessary, when the two sealing parts 1 are installed at both ends of the connecting hole 3, the first clearance through holes 41 on both sides can be adjusted to be collinear along the axial direction of the connecting hole 3, so that the screw 7 can pass through the sealing parts 1 at both ends perpendicularly at the same time. The nut 8 is sleeved on the end of the screw 7, and through the threaded engagement with the screw 7, it presses the pressure plate 4 toward the connecting hole 3, so that the sealing part 1 and the port of the connecting hole 3 are tightly fitted. Furthermore, a washer is provided between the pressure plate 4 and the nut 8. This not only prevents the nut 8 from loosening for a better tightening effect, but also works with the nut 8 to alleviate potential water leakage problems caused by the opening in the pressure plate 4. In this embodiment, the screw 7 tightens the sealing member 1 by a pull-out mechanism. In other embodiments, one end of the screw 7 can be a bolt head that abuts against the outside of the pressure plate 4, while the other end is tightened by the nut 8. In this embodiment, there are two sets of fastening components 2, symmetrically arranged about the center point of the limiting part 5. In other embodiments, the number of fastening components 2 can be one, three, or more.

[0033] As an alternative embodiment, the fastening assembly 2 can be a pre-stretched steel strand, a locking element, and a gasket. The steel strand is tensioned after passing through the sealing elements 1 on both sides along the axial direction of the connecting hole 3. The locking elements are fixed to the steel strand from both sides, providing axial positioning engagement with the steel strand. The steel strand pulls the locking elements inward by its elastic restoring force, causing the latter to abut against the surface of the pressure plate 4 from the side facing away from the connecting hole 3, thereby fastening the sealing elements 1 to both ends of the connecting hole 3. To ensure sealing, the gasket is provided between the locking element and the pressure plate 4.

[0034] like Figure 1As shown, the method of using the device will now be briefly described. First, for the two sealing components 1, align the four limiting holes 61 on the rubber layer 6 with the four limiting blocks 51 on the pressure plate 4, attach the rubber layer 6 to the pressure plate 4, and ensure that the first clearance through hole 62 of each set is aligned with the second clearance through hole 62. Next, from the outside of the steel caisson wall (hereinafter referred to as "outer side"), insert the four limiting blocks 51 exposed on the rubber layer 6 into the connecting hole 3 to lock onto the hole wall of the connecting hole 3. Insert the screw 7 into the first clearance through hole 41 and expose a certain length of it. Slide the gasket 9 and nut 8 onto the screw 7 from the side facing away from the connecting hole 3, and screw them until they abut against the outer pressure plate 4. Subsequently, on the other side of the connecting hole 3, i.e., the inner side of the steel caisson wall (hereinafter referred to as "inner side"), the second clearance through hole 62 of another sealing member 1 is aligned with the screw 7 and then fitted into the screw 7, and the four limiting blocks 51 on this side are locked onto the hole wall of the connecting hole 3. It is necessary that the rubber layer 6 abuts against the port of the connecting hole 3 on both the inner and outer sides. Finally, the gasket 9 and nut 8 are fitted onto the screw 7 and screwed onto the pressure plate 4 on the inner side. The nuts 8 on the inner and outer sides of the connecting hole 3 are further tightened so that the sealing members 1 on both the inner and outer sides can fit tightly against the port of the connecting hole 3.

[0035] The above description is merely a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All technically equivalent modifications made based on the content of the present utility model specification shall fall within the protection scope of the present utility model.

Claims

1. A device for sealing the connecting holes of a deep-sea underwater structure, characterized in that: It includes two sealing elements and at least one fastening assembly; the sealing elements include a pressure plate, a rubber layer, and a limiting part; The rubber layer is attached to one side of the pressure plate; the outer contour dimension of the portion of the rubber layer overlapping the pressure plate is larger than the diameter of the connecting hole; the rubber layer is closed along the circumferential direction on the outer side; The pressure plate has the limiting part fixed on the side facing the rubber layer; the dimension of the limiting part along the thickness direction of the pressure plate is greater than the thickness of the rubber layer; the geometric shape constructed by connecting the outer contours of the limiting part is inscribed in the cross-sectional circle of the connecting hole; the outer side of the limiting part is perpendicular to the pressure plate; When the connecting hole is blocked: the limiting part is engaged with the hole wall of the connecting hole and performs a radial limiting fit with the connecting hole; the two blocking parts are attached to the two ports of the connecting hole through the limiting part; the fastening assembly passes through the two blocking parts along the axial direction of the connecting hole to fasten the blocking parts to both sides of the connecting hole.

2. The device for sealing the connecting holes of a deep-sea underwater structure according to claim 1, characterized in that: The limiting part includes a plurality of limiting blocks; the outer side of the limiting blocks is perpendicular to the pressure plate; the plurality of limiting blocks are spaced apart along the circumferential direction, and the circle formed by connecting the outermost blocks has a diameter equal to the diameter of the connecting hole.

3. The device for sealing the connecting holes of a deep underwater structure according to claim 2, characterized in that: The rubber layer has several limiting holes extending through it along its thickness direction; the size and relative position of the limiting holes match the limiting block.

4. The device for sealing the connecting holes of a deep-sea underwater structure according to claim 1, characterized in that: The pressure plate is provided with a first clearance through hole, and the rubber layer is provided with a second clearance through hole; the first clearance through hole and the second clearance through hole are aligned; the first clearance through hole and the second clearance through hole are located inside the outer circle of the limiting part.

5. A device for sealing the connecting holes of a deep-sea underwater structure according to claim 4, characterized in that: The fastening assembly includes a screw and a nut; the screw passes through the first clearance through hole and the second clearance through hole on the two side sealing members along the axial direction of the connecting hole; the nut is sleeved on the end of the screw and, through thread engagement with the screw, presses the pressure plate toward the connecting hole.

6. A device for sealing the connecting holes of a deep-sea underwater structure according to claim 5, characterized in that: The fastening assembly also includes a washer; the washer is sleeved on the screw and located between the pressure plate and the nut.

7. A device for sealing the connecting holes of a deep-sea underwater structure according to claim 4, characterized in that: The fastening assembly includes a steel strand, a locking element, and a gasket. The steel strand is tensioned after passing through the first and second clearance through holes on the two side sealing elements along the axial direction of the connecting hole. The locking element is fixed to the steel strand from both sides and engages with the steel strand along the axial direction. The steel strand pulls the locking element inward by elastic restoring force, causing the locking element to abut against the surface of the pressure plate from the side opposite to the connecting hole. The gasket is disposed between the locking element and the pressure plate.

8. A device for sealing the connecting holes of a deep-sea underwater structure according to claim 1, characterized in that: There are two fastening components, which are symmetrically arranged about the center point of the limiting part.

9. A device for sealing the connecting holes of a deep-sea underwater structure according to claim 1, characterized in that: The rubber layer and the pressure plate are circular with the same diameter.

10. A device for sealing the connecting holes of a deep-sea underwater structure according to claim 1, characterized in that: The pressure plate is a steel plate.

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