A construction process, device and immersed tube for installing and removing underwater cables in a sealed compartment structure of an immersed tube tunnel

Abstract

The present application discloses a construction process, device and immersed tube for installing and removing underwater cables in a sealed cabin structure of an immersed tube tunnel. The process includes a sealed cabin manufacturing step and a cable connection step. Since a device with a two-layer sealing structure is arranged on the end sealing door, the socket can be installed on the end sealing door during the secondary outfitting. The time that the socket is in the seawater environment is greatly reduced, thereby effectively reducing the degree of corrosion of the socket and lowering the damage rate of the socket.

Description

Technical Field

[0001] The present application belongs to the field of tire manufacturing technology, and in particular relates to a construction process, a device and a immersed tube for installing and removing underwater cables in a sealed compartment structure of an immersed tube tunnel. Background Art

[0002] A large number of underwater power equipment and detection equipment are required during the construction of immersed tube tunnels to ensure the smooth and safe progress of the entire construction process. The energy source of power equipment and detection equipment usually comes from the water, so it is necessary to transmit the energy source on the water to the underwater power equipment and detection equipment through cables and sockets that connect the cables. The underwater socket is the carrier of energy transmission inside and outside the pipe section when the ship pipe is connected. It is a bridge between the ballast water system inside the immersed tube and the power transmission and optical fiber communication connection of the installation ship. In the traditional construction process, underwater sockets need to be installed on the end sealing door during the first outfitting of the immersed tube tunnel. Each section of the immersed tube requires multiple underwater sockets. The sockets are circulated with the end sealing door, and a large number of sockets are required for matching use. In addition, from dry dock filling, ship pipe connection, secondary outfitting to immersed tube installation, the underwater sockets are placed in seawater for a long time, which is easily corroded by marine organisms, causing the sockets to rust and damage. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present application provides a immersed tube tunnel sealed compartment structure underwater cable installation and disassembly construction process, device and immersed tube.

[0004] The technical solutions provided by this application are as follows:

[0005] A construction process for installing and removing underwater cables in a sealed compartment structure of an immersed tube tunnel comprises the following steps:

[0006] Sealed cabin production: a first mounting hole is opened on the end sealing door, a first flange seat is arranged inside the end sealing door and inside the first mounting hole, and a first blind flange is installed on the first flange seat; a sealed cabin is installed at a position corresponding to the first mounting hole on the outside of the end sealing door, and the sealed cabin is provided with a sealing cover plate;

[0007] Cable connection process: During the secondary outfitting, remove the first blind flange from the inside of the end sealing door, and install the socket from the inside of the end sealing door; remove the sealing cover plate of the sealed cabin from the outside of the end sealing door, insert the cable plug into the socket, and complete the cable installation construction.

[0008] In some embodiments of the present application, the immersed tube tunnel sealed compartment structure underwater cable installation and removal construction process further includes:

[0009] Sealing verification: install the socket from the inside of the end sealing door to the first flange seat, and perform a water pressure test on the sealed cabin. After the water pressure test is passed, remove the socket, install the first blind flange from the inside of the end sealing door to the first flange seat, and perform a water pressure test again.

[0010] In some embodiments of the present application, the immersed tube tunnel sealed compartment structure underwater cable installation and removal construction process further includes:

[0011] Cable disassembly process: unplug the cable plug from the outside of the end sealing door, and install the sealing cover plate from the outside of the end sealing door; disassemble the socket from the inside of the end sealing door, and install the first blind flange from the inside of the end sealing door.

[0012] In some embodiments of the present application, during the secondary outfitting process, the socket is installed on the first flange seat via a matching flange that is mounted in cooperation with the socket.

[0013] In some embodiments of the present application, centers of the first mounting hole of the end sealing door, the first flange seat, and the sealing cover plate are on the same axis.

[0014] A second embodiment of the present application provides an immersed tube tunnel sealed cabin structure underwater cable installation and removal construction device, which is used for immersed tube tunnel underwater cable installation and removal construction, including: a sealed cabin arranged on the immersed tube end sealing door, a first installation hole is opened on the end sealing door at a position corresponding to the sealed cabin, a first flange seat is arranged on the inner side of the end sealing door and in the first installation hole, and a first blind flange is installed on the first flange seat.

[0015] A third embodiment of the present application also provides an immersed tube, including the immersed tube tunnel sealed compartment structure underwater cable installation and removal construction device as described above.

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] The immersed tube tunnel sealed compartment structure underwater cable installation and disassembly construction process provided by the present application sets a device with a two-layer sealing structure on the end sealing door, and the socket is installed on the end sealing door during the secondary outfitting. The time the socket is in the seawater environment is greatly reduced, thereby effectively reducing the degree of corrosion of the socket and reducing the damage rate of the socket. In comparison, in the prior art, the socket is installed on the end sealing door during the primary outfitting, and the socket is always placed in the seawater environment during the period of dry dock filling, ship pipe connection, secondary outfitting and immersed tube installation, and is easily corroded by marine organisms, resulting in rust and damage to the socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the process of installing and removing the construction process of the immersed tube tunnel sealed compartment structure underwater cable according to one embodiment of the present application;

[0019] Figure 2 It is a schematic structural diagram of an immersed tube tunnel sealed compartment structure underwater cable installation and removal construction device according to one embodiment of the present application;

[0020] Figure 3 It is a structural schematic diagram of an immersed tube tunnel sealed compartment structure underwater cable installation and removal construction device according to an embodiment of the present application, wherein the first blind flange is replaced with a matching flange;

[0021] Figure 4 It is a schematic diagram of the structure of an underwater cable installation and removal construction device for a immersed tube tunnel sealed compartment structure according to an embodiment of the present application, wherein a cable plug is inserted into a socket;

[0022] Figure 5 It is a schematic diagram of the structure of an immersed tube tunnel sealed compartment structure underwater cable installation and removal construction device according to one embodiment of the present application, wherein the sealing cover plate is removed from the sealing cavity;

[0023] Numbers in the figure: 10, end sealing door; 101, first mounting hole; 102, first flange seat; 1, sealing chamber; 11, sealing cover plate; 2, first blind flange; 3, socket assembly. DETAILED DESCRIPTION

[0024] The technical solution of the present application is described in detail below in conjunction with specific implementations. However, it should be understood that without further description, the elements, structures and features in one implementation may also be beneficially combined with other implementations.

[0025] It is worth to be understood that, although the drawings may show a specific order of method steps, the order of steps may be different from the order depicted. In addition, two or more steps may be performed simultaneously or partially simultaneously. Such variations will depend on the selected software and hardware and designer selection. All such variations are within the scope of the present application.

[0026] It is worth to understand that the terms "system", "unit", "module" used in this article are a method for distinguishing different components, elements, parts, parts or components at different levels. However, these terms can be replaced by other expressions that can achieve the same purpose.

[0027] The described implementation mode is only a description of the preferred implementation mode of the present application, and does not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements made to the technical solution of the present application by ordinary technicians in this field should fall within the protection scope determined by the claims of the present application.

[0028] like Figure 1As shown, the immersed tube tunnel sealed compartment structure underwater cable installation and removal construction process provided by the first embodiment of the present application includes the following steps:

[0029] S1: Manufacturing a sealed cabin, opening a first mounting hole on the end sealing door, arranging a first flange seat inside the first mounting hole on the inner side of the end sealing door, and installing a first blind flange on the first flange seat; installing a sealed cabin at a position corresponding to the first mounting hole on the outer side of the end sealing door, and the sealed cabin is provided with a sealing cover plate;

[0030] S1: Cable connection process. During the secondary outfitting, the first blind flange is removed from the inner side of the end sealing door, and a socket is installed from the inner side of the end sealing door; the sealing cover plate of the sealed cabin is removed from the outer side of the end sealing door, and the cable plug is inserted into the socket to complete the cable installation construction.

[0031] In the prior art, the socket is installed on the end sealing door during the primary outfitting. During the period of dry dock filling, ship pipe connection, secondary outfitting and immersed tube installation, the socket is always placed in the seawater environment, which is easily corroded by marine organisms, causing the socket to rust and damage. In the construction process provided by the present application, the socket is installed on the end sealing door during the secondary outfitting, and the time the socket is in the seawater environment is greatly reduced, thereby effectively reducing the degree of corrosion of the socket and reducing the damage rate of the socket.

[0032] Specifically, during the secondary outfitting process, the socket is installed on the first flange seat through the matching flange that is installed therewith. The matching flange matches the size of the first flange seat, and the mounting hole in the center of the matching flange can be set in a variety of ways to meet the installation needs of different sockets. When adjusting the socket model, there is no need to disassemble the first flange seat, but only to replace the model of the matching flange.

[0033] Specifically, the centers of the first mounting hole of the end sealing door, the first flange seat and the sealing cover plate are on the same axis, thereby ensuring the installation accuracy of the underwater cable socket.

[0034] Specifically, in order to ensure the sealing of the immersed tube tunnel sealed compartment structure underwater cable during installation and removal, the following steps are also included:

[0035] Sealing verification: install the socket from the inside of the end sealing door to the first flange seat, perform a water pressure test on the sealed cabin, remove the socket after the water pressure test is passed, install the first blind flange from the inside of the end sealing door to the first flange seat, and perform a water pressure test again. The immersed tube tunnel sealed cabin structure underwater cable installation and removal construction process provided by this application performs sealing verification, i.e., water pressure test, when installing and removing the socket. After two water pressure tests, it is ensured that the sealing requirements during the underwater cable installation and removal construction process are met.

[0036] Specifically, in order to achieve the turnover of the socket and the sealing during the turnover process, the immersed tube tunnel sealed compartment structure underwater cable installation and removal construction process also includes the following steps:

[0037] Cable disassembly process: unplug the cable plug from the outside of the end sealing door, and install the sealing cover plate from the outside of the end sealing door; disassemble the socket from the inside of the end sealing door, and install the first blind flange from the inside of the end sealing door.

[0038] Removing the socket through the above steps ensures that the immersed tube is always in a sealed state during the disassembly process, and meets the sealing requirements of the immersed tube outfitting while rotating the socket. The socket of the present application can be easily removed from the end sealing door after a section of immersed tube is installed, and does not affect the sealing requirements of the immersed tube. The removed socket can be rotated to the installation of the next section of immersed tube. Compared with the prior art, each section of immersed tube is installed with a set of sockets (generally one section of immersed tube requires 10 sockets), and the sockets are circulated with the end sealing door. The number of sockets and accessories matching the sockets required is relatively large. The construction process of the present application can reduce the number of sockets used during the installation of immersed tubes and improve the turnover rate of sockets.

[0039] like Figure 2 The figure shows a schematic diagram of the structure of an underwater cable installation and removal construction device with a sealed compartment structure for an immersed tube tunnel. A first installation hole 101 is provided on the end sealing door 10 of the immersed tube. A first flange seat 102 is provided inside the end sealing door 10 and inside the first installation hole 101. A first blind flange 2 is installed on the first flange seat 102. A sealed compartment 1 is provided on the outer side of the end sealing door 10 of the immersed tube at a position corresponding to the first installation hole 101. The sealed compartment 1 is provided with a sealing cover plate 11. When the sealing cover plate 11 is installed on the sealed compartment 1, the immersed tube 10 is in a sealed state. The first installation hole 101 is sealed by the first blind flange 2. The first blind flange 2 and the sealing cover plate 11 form two sealing structures to facilitate the subsequent underwater cable installation and removal construction.

[0040] like Figure 3 As shown, when the immersed tube tunnel sealed compartment structure underwater cable installation and removal construction device is used to install a socket, the first blind flange 2 is replaced by a socket 3, and the socket 3 is installed on the first flange seat 102 through the matching flange 4.

[0041] like Figure 4 As shown, the first blind flange 2 has been removed from the end sealing door 10, and the socket assembly 3 is installed on the first flange seat 102. Figure 5 As shown, the sealing cover plate 11 has been removed from the sealing chamber 1, and the cable plug 5 is inserted into the socket 3 through the sealing chamber opening, thereby realizing power transmission and communication connection of each power-consuming unit inside the immersed tube for subsequent immersed tube installation.

[0042] The present application also provides an immersed tube, including the immersed tube tunnel sealed compartment structure underwater cable installation and removal construction device. The immersed tube is used in an immersed tube tunnel, and a device with a two-layer sealing structure is arranged on the end sealing door, which can facilitate underwater cable installation and removal construction. The socket is installed on the end sealing door during the secondary outfitting, and the time the socket is in the seawater environment is greatly reduced, thereby effectively reducing the corrosion degree of the socket and reducing the damage rate of the socket.

Claims

1. A construction process for installing and removing underwater cables in a sealed compartment of an immersed tube tunnel. It is characterized in that The steps include: Sealed cabin production: a first mounting hole is opened on the end sealing door, a first flange seat is arranged inside the end sealing door and inside the first mounting hole, and a first blind flange is installed on the first flange seat; a sealed cabin is installed at a position corresponding to the first mounting hole on the outside of the end sealing door, and the sealed cabin is provided with a sealing cover plate; Cable connection process: during the secondary outfitting, the first blind flange is removed from the inner side of the end sealing door, and the socket is installed from the inner side of the end sealing door; the sealing cover plate of the sealed cabin is removed from the outer side of the end sealing door, and the cable plug is inserted into the socket to complete the cable installation construction; Sealing verification: install the socket from the inner side of the end sealing door to the first flange seat, and perform a water pressure test on the sealed cabin. After the water pressure test is passed, remove the socket, install the first blind flange from the inner side of the end sealing door to the first flange seat, and perform a water pressure test again; Cable disassembly process: unplug the cable plug from the outside of the end sealing door, and install the sealing cover plate from the outside of the end sealing door; disassemble the socket from the inside of the end sealing door, and install the first blind flange from the inside of the end sealing door.

2. According to the immersed tube tunnel sealed compartment structure underwater cable installation and removal construction process of claim 1, It is characterized in that During the secondary outfitting process, the socket is installed on the first flange seat through a matching flange that is installed in cooperation with the socket.

3. According to the immersed tube tunnel sealed compartment structure underwater cable installation and removal construction process of claim 2, It is characterized in that The first mounting hole of the end sealing door, the first flange seat and the sealing cover plate are located on the same axis.

4. An immersed tube tunnel sealed compartment structure underwater cable installation and removal construction device, which can be used for the immersed tube tunnel sealed compartment structure underwater cable installation and removal construction process according to any one of claims 1 to 3, It is characterized in that include: A sealing cabin is arranged on the end sealing door of the immersed tube, a first mounting hole is opened on the end sealing door at a position corresponding to the sealing cabin, a first flange seat is arranged on the inner side of the end sealing door and in the first mounting hole, and a first blind flange is installed on the first flange seat.

5. An immersed tube, It is characterized in that It comprises the immersed tube tunnel sealed compartment structure type underwater cable installation and removal construction device as described in claim 4.

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