Static umbilical deep water pressure test structure

Abstract

The present application relates to the technical field of pressure test structure, more particularly, to a static umbilical deep water pressure test structure, the underwater structure includes a first guide and a second guide, the pressure test structure includes a third guide, a fourth guide, a test cap, a fastener, a socket and a lead-through joint, the third guide is connected with the first guide, the fourth guide is connected with the second guide, the first guide and the third guide are arranged to guide the radial position of the test cap and the hub, the second guide and the fourth guide are arranged to limit the radial position of the test cap and the hub and guide the axial position, and the axial position of the test cap and the hub is limited by the fastener, so that the test cap and the hub are stably connected in the center, and the sealing performance of the connection between the installed static umbilical and the underwater structure is tested.

Description

Technical Field

[0001] This invention relates to the technical field of pressure testing structures, and more specifically, to a static umbilical cable deep-water pressure testing structure. Background Technology

[0002] For deepwater oil and gas fields, a common development approach is to combine floating production platforms, such as tension leg platforms and monopole platforms, with subsea production systems and deepwater pipeline systems. The subsea production system mainly consists of surface control equipment, dynamic umbilical cables, subsea electro-hydraulic distribution units, static umbilical cables, subsea manifolds, subsea wellheads, and Christmas trees. After the deepwater static umbilical cable is connected to the subsea structure, it is connected to the dynamic umbilical cable via a hub on the subsea structure. The dynamic umbilical cable is then connected to the floating production platform.

[0003] Typically, pre-commissioning of the umbilical cable is conducted after the floating production platform and dynamic umbilical cable are installed and in place. Pressure testing equipment is connected to the pipeline interface of the dynamic umbilical cable on the platform to verify the reliability of the connection and sealing between the dynamic and static umbilical cables and the end joints of the subsea structures. However, for well areas that are geographically dispersed and spaced far apart, with a small number of development wells in each area, the static umbilical cable and subsea structures may be installed and connected in advance in one or several well areas, but the floating production platform and dynamic umbilical cable have not yet been installed and in place. This makes it impossible to verify the sealing performance of the already installed static umbilical cable end joints in advance. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies that cannot verify the sealing performance of the connection between the installed static umbilical cable and the underwater structure in advance, and to provide a deep-water pressure test structure for static umbilical cables, which facilitates the testing of the sealing performance of the connection between the installed static umbilical cable and the underwater structure.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] A deep-water pressure testing structure for a static umbilical cable is provided. The static umbilical cable is connected to a hub of an underwater structure. The underwater structure further includes a first guide member and a second guide member, both of which are connected to the hub. The first guide member is arranged radially along the hub, and the second guide member is arranged axially along the hub. The pressure testing structure includes a first mounting frame, a second mounting frame, a connecting plate mounted on the second mounting frame, a third guide member, a fourth guide member, a test cap, fasteners, a socket, and a conductive connector mounted on the first mounting frame. The second mounting frame is slidably connected to the first mounting frame. The third guide member is engaged with the first guide member. The fourth guide member is disposed on the connecting plate and engaged with the second guide member. The test cap is disposed on the connecting plate. The test cap and the hub are fastened together by the fasteners. One end of the test cap is electrically connected to the socket, and the other end of the test cap is electrically connected to the hub through the conductive connector.

[0007] This invention relates to a static umbilical cable deep-water pressure testing structure. The static umbilical cable is connected to the hub of an underwater structure and located at the bottom of deep water. During pressure testing, the test cap is lowered into the deep water, and the third guide component engages with the first guide component to align the test cap and hub radially. After the third guide component is fully engaged with the first guide component, the lifting device is loosened and retrieved. The two ends of the ROV stroke lifting tool are connected to the second mounting frame and the first guide component, respectively. The second mounting frame slides on the first mounting frame, moving towards the hub until the fourth guide component is fully engaged with the second guide component. At this point, the test cap and hub are connected via a conductive connector. An ROV torque tool is used to drive the fasteners to tighten, securing the test cap and hub together. This facilitates connection of the test cap and hub underwater. The pressure testing equipment is electrically connected to a socket, enabling the testing of the sealing performance of the connection between the installed static umbilical cable and the underwater structure using the test cap. By setting the first and third guide members, the radial position of the test cap and hub is guided; by setting the second and fourth guide members, the radial position of the test cap and hub is restricted and the axial position is guided; and by fasteners, the axial position of the test cap and hub is restricted, thereby achieving a stable alignment connection between the test cap and hub, which facilitates the testing of the sealing performance of the connection between the installed static umbilical cable and the underwater structure.

[0008] Furthermore, the test cap is provided with a fifth guide member, and the hub is provided with a sixth guide member, the fifth guide member and the sixth guide member being connected in cooperation. By setting the fifth and sixth guide members, the relative positions of the test cap and the hub are repositioned, further realizing the centering connection between the test cap and the hub.

[0009] Furthermore, the fastener includes a first fastening claw, a second fastening claw, and a connecting member for tightening the first and second fastening claws. Both the first and second fastening claws are connected to the connecting member. The hub is located between the first and second fastening claws and abuts against both. The connecting member drives the first and second fastening claws to move relative to each other, clamping the hub, restricting its position, and stably connecting the test cap and the hub.

[0010] Furthermore, the hub is provided with a first slot, and the first fastening claw and / or the second fastening claw is provided with a first insert, which is inserted into the first slot. The first insert positions the hub, thereby further restricting the axial position of the hub.

[0011] Furthermore, the first slot is provided with a first inclined surface, which gradually slopes towards the central axis of the hub from the test cap to the hub. When tightening the fastener, the first insert is inserted into the first slot, and due to the first inclined surface, the hub moves towards the test cap, achieving a tight connection between the test cap and the hub.

[0012] Furthermore, both the first and second fastening claws are provided with sliding shafts, and the connecting disc is provided with sliding grooves that are slidably connected to the sliding shafts. The sliding shafts slide within the sliding grooves, guiding and supporting the movement trajectories of the first and second fastening claws.

[0013] Furthermore, a limiting block is provided on the sliding shaft. The limiting block and the first fastening claw abut against both sides of the connecting disc, and the limiting block and the second fastening claw abut against both sides of the connecting disc. The limiting block constrains the axial movement of the fastener.

[0014] Furthermore, it also includes a positioning key and a positioning ring. The positioning key is arranged radially along the test cap and is inserted into the test cap and the connecting plate. The test cap has a positioning groove in its circumference. The positioning ring is located in the positioning groove, and its two ends abut against the test cap and the connecting plate, respectively. By setting the positioning key and the positioning ring, the test cap and the connecting plate are stably aligned and fixed, preventing the test cap from moving axially or radially relative to the connecting plate. Thus, the test cap and the hub can be aligned and connected through the connection between the connecting plate and the hub.

[0015] Furthermore, a locking assembly connects the first mounting bracket and the second mounting bracket. When the test cap is lifted, the first mounting bracket and the second mounting bracket are locked together to prevent the second mounting bracket from wobbling on the first mounting bracket.

[0016] Furthermore, the locking assembly includes a first latching member and a second latching member. The first latching member is rotatably connected to the first mounting bracket, and the second latching member is mounted on the second mounting bracket, with the first latching member and the second latching member engaging. When the test cap is lifted, the second latching member engages with the first latching member to prevent the second mounting bracket from sliding on the first mounting bracket. When it is necessary to slide the connecting plate, the second latching member is rotated to separate it from the first latching member.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The present invention provides a static umbilical cable deep-water pressure testing structure, which guides the radial position of the test cap and hub by setting a first guide member and a third guide member; restricts the radial position of the test cap and hub by setting a second guide member and a fourth guide member, and guides the axial position; and restricts the axial position of the test cap and hub by fasteners, thereby achieving a stable centering connection between the test cap and hub, which facilitates the testing of the sealing performance of the connection between the installed static umbilical cable and the underwater structure.

[0019] 2. The static umbilical cable deep-water pressure test structure of the present invention, by setting a fifth guide and a sixth guide, repositions the relative positions of the test cap and the hub, and further realizes the centering connection of the test cap and the hub.

[0020] 3. The present invention provides a static umbilical cable deep-water pressure testing structure, which achieves stable alignment and fixation between the test cap and the connecting plate by setting a positioning key and a positioning ring, preventing the test cap from moving axially or radially relative to the connecting plate, thereby enabling the test cap and the hub to be aligned and connected through the connection between the connecting plate and the hub; by setting a limiting block to constrain the axial movement of the fastener, the relative position of the fastener and the connecting plate is positioned, thereby enabling the test cap and the hub to be securely connected through the connection between the fastener and the hub. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the static umbilical cable deep-water pressure test structure installed on an underwater structure;

[0022] Figure 2 This is a schematic diagram of the static umbilical cable deep-water pressure test structure installed on an underwater structure from another perspective.

[0023] Figure 3 This is a schematic diagram of the structure for a static umbilical cable deep-water pressure test.

[0024] Figure 4 This is a structural schematic diagram of the fastener fastening connection test cap and hub;

[0025] Figure 5 yes Figure 2 Enlarged view of the structure at point A in the middle;

[0026] Figure 6 This is a schematic diagram of an underwater structure.

[0027] In the attached diagram: 1. Hub seat; 101. First slot; 111. First inclined surface; 2. First guide; 3. Second guide; 4. First mounting bracket; 5. Second mounting bracket; 6. Connecting plate; 601. Sliding groove; 7. Third guide; 8. Fourth guide; 9. Test cap; 901. Second slot; 911. Second inclined surface; 902. Positioning groove; 10. Fastener; 1001. First fastening claw; 1011. First insert block ; 1012, Second insert block; 1002, Second fastening claw; 1003, Connector; 1004, Sliding shaft; 1005, Limiting block; 1006, Fastener flap; 11, Socket; 12, Conductive connector; 13, Fifth guide; 14, Sixth guide; 15, Positioning key; 16, Positioning ring; 17, Locking assembly; 171, First snap-fit ​​component; 172, Second snap-fit ​​component; 18, Indicator arrow; 19, Indicator mark. Detailed Implementation

[0028] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0029] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they 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, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. Furthermore, if the embodiments of the present invention involve descriptions such as "first" and "second," these descriptions are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In addition, the meaning of "and / or" in the text is that it includes three parallel options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0030] Example 1

[0031] This embodiment is a first embodiment of a static umbilical cable deep-water pressure testing structure, such as... Figure 1 As shown, the static umbilical cable is connected to the hub 1 of the underwater structure. The underwater structure also includes a first guide 2 and a second guide 3, both of which are connected to the hub 1. The first guide 2 is arranged radially along the hub 1, and the second guide 3 is arranged axially along the hub 1. In this embodiment, a fixed seat is also included, which is placed on the bottom of the water. The first guide 2, the second guide 3, and the hub 1 are all mounted on the fixed seat. The pressure test structure includes a first mounting frame 4, a second mounting frame 5, a connecting plate 6 mounted on the second mounting frame 5, a third guide 7, a fourth guide 8, a test cap 9, a fastener 10, a socket 11, and a conductive connector 12 mounted on the first mounting frame 4. The second mounting frame 5 is slidably connected to the first mounting frame 4. The third guide 7 is connected to the first guide 2. The fourth guide 8 is mounted on the connecting plate 6 and is connected to the second guide 3. The test cap 9 is mounted on the connecting plate 6, and the test cap 9 and the hub 1 are fastened together by the fastener 10. The socket 11 can be installed on the first mounting bracket 4, the second mounting bracket 5, or the connecting plate 6, such as Figure 3 As shown, a protective connector is inserted into the socket 11. Before the pressure test, the protective connector is inserted into the socket 11 to protect the cleanliness of the socket 11. One end of the test cap 9 is electrically connected to the socket 11, and the other end of the test cap 9 is electrically connected to the hub 1 through the conductive connector 12. In this embodiment, a sealing plate is also included. The sealing plate is fixedly connected to the test cap 9. The conductive connector 12 is located inside the sealing plate, and both ends of the conductive connector 12 are electrically connected to the hub 1 and the test cap 9, respectively. A sealing ring is provided between the sealing plate and the test cap 9, and a sealing ring is provided between the sealing plate and the hub 1 to achieve a sealed connection between the test cap 9 and the hub 1. By setting the sealing ring, impurities are prevented from entering the connection between the test cap 9 and the hub 1.

[0032] In this embodiment, as Figure 6 As shown, the first guide member 2 includes two guide rods, which are arranged horizontally and parallel to each other on the fixed base, with a gap between them. The hub 1 is mounted on the fixed base. Figure 3 As shown, the first mounting bracket 4 includes two opposing support saddle plates. Figure 1 As shown, when the first guide member 2 and the third guide member 7 cooperate, the sliding rod slides between the two guide rods until it abuts against the support seat. At the same time, the two support saddle plates abut against the two ends of the guide rods respectively, restricting the horizontal movement of the test cap 9. Figure 6 As shown, the second guide member 3 is configured as a guide post, such as... Figure 3 As shown, the fourth guide member 8 is set as a guide sleeve. When the second guide member 3 and the fourth guide member 8 are engaged, the guide post is inserted into the guide sleeve.

[0033] like Figure 2 As shown, the test cap 9 is equipped with a fifth guide component 13, namely an insert block, as shown. Figure 6 As shown, the hub 1 is provided with a sixth guide member 14, i.e., a slot. The fifth guide member 13 and the sixth guide member 14 are connected in cooperation, that is, the insert is inserted into the slot. By setting the fifth guide member 13 and the sixth guide member 14, the relative position of the test cap 9 and the hub 1 is repositioned, allowing the test cap 9 and the hub 1 to be directly positioned, and further realizing the centering connection between the test cap 9 and the hub 1.

[0034] like Figure 4 As shown, the fastener 10 includes a first fastening claw 1001, a second fastening claw 1002, and a connecting member 1003 for tightening the first fastening claw 1001 and the second fastening claw 1002. The first fastening claw 1001 and the second fastening claw 1002 can be configured to rotate relative to each other, meaning they can be rotatably connected to the connecting disc 6 or to the second mounting bracket 5 or the test cap 9. Simultaneously, the first fastening claw 1001 and the second fastening claw 1002 can also be configured to slide relative to each other, meaning they can be slidably connected to the connecting disc 6 or to the second mounting bracket 5 or the test cap 9. Both the first fastening claw 1001 and the second fastening claw 1002 are connected to the connecting member 1003, which can be a bidirectional screw or a screw-nut structure. The hub 1 is located between the first fastening claw 1001 and the second fastening claw 1002, and is abutted against both the first fastening claw 1001 and the second fastening claw 1002.

[0035] In this embodiment, the fastener 10 further includes a fastener flap 1006, which is disposed on the connecting disc 6, such as... Figure 4 As shown, this embodiment uses a rotating connection, that is, the first fastening claw 1001 and the second fastening claw 1002 are respectively rotatably connected to both ends of the fastener 1006. The connector 1003 uses a bidirectional screw with opposite threads at both ends, and both ends are threadedly connected to the first fastening claw 1001 and the second fastening claw 1002 respectively. By rotating the bidirectional screw, the first fastening claw 1001 and the second fastening claw 1002 can be driven to move relative to each other, thereby clamping and fastening the hub seat 1.

[0036] The working principle of the static umbilical cable deep-water pressure test structure in this embodiment is as follows:

[0037] The static umbilical cable is connected to the hub 1 of the underwater structure and is located at the bottom of deep water. During the pressure test, the test cap 9 is lowered into the deep water, allowing the third guide 7 to engage with the first guide 2, that is, allowing the sliding rod to slide between the two guide rods. At this time, the two support saddle plates, that is, the first mounting frame 4, abut against the two ends of the two guide rods, aligning the test cap 9 and the hub 1 in the radial direction. After the third guide 7 and the first guide 2 are fully engaged, that is, after the sliding rod slides to the bottom of the two guide rods, the lifting device is relaxed and retrieved. At this time, the position of the first mounting frame 4 is fixed. Connect the two ends of the ROV stroke lifting tool to the second mounting bracket 5 and the fixed base respectively, and let the second mounting bracket 5 slide on the first mounting bracket 4 and move towards the hub 1 until the fourth guide 8 and the second guide 3 are fully engaged, that is, the guide post is fully inserted into the guide sleeve, and at the same time the fifth guide 13 is inserted into the sixth guide 14, that is, the insert block is inserted into the slot. The test cap 9 is connected to the hub 1 through the conductive connector 12. Use the ROV torque tool to drive the fastener 10 to tighten, that is, drive the bidirectional screw to rotate. The bidirectional screw drives the first fastening claw 1001 and the second fastening claw 1002 to move relative to each other, clamping and securing the hub 1, and firmly connecting the hub 1 to the pressure test structure. Connect the pressure test equipment to the socket 11 electrically, and the sealing performance of the connection between the installed static umbilical cable and the underwater structure can be tested through the test cap 9. By setting the first guide member 2 and the third guide member 7, the radial position of the test cap 9 and the hub 1 is guided; by setting the second guide member 3 and the fourth guide member 8, the radial position of the test cap 9 and the hub 1 is restricted and the axial position is guided; and by setting the fastener 10, the axial position of the test cap 9 and the hub 1 is restricted, thereby achieving a stable centering connection between the test cap 9 and the hub 1, which facilitates the testing of the sealing performance of the connection between the installed static umbilical cable and the underwater structure.

[0038] Example 2

[0039] This embodiment presents a static umbilical cable deep-water pressure testing structure. Based on Embodiment 1, this embodiment, as follows: Figure 2 As shown, the hub 1 has a first slot 101, and a first insert 1011 is provided on the first fastening claw 1001 and / or the second fastening claw 1002. The first insert 1011 is inserted into the first slot 101. The first insert 1011 positions the hub 1, thereby further restricting the axial position of the hub. The first slot 101 has a first inclined surface 111, which gradually slopes towards the central axis of the hub 1 from the test cap 9 to the hub 1. When tightening the fastener, the first insert is inserted into the first slot. Due to the setting of the first inclined surface 111, the hub moves towards the test cap 9, realizing a tight connection between the test cap and the hub.

[0040] like Figure 4As shown, both the first fastening claw 1001 and the second fastening claw 1002 are provided with sliding shafts 1004, and the connecting disk 6 is provided with sliding grooves 601 that are slidably connected to the sliding shafts 1004. The sliding shafts slide within the sliding grooves, guiding and supporting the movement trajectories of the first fastening claw 1001 and the second fastening claw 1002. The sliding shaft 1004 is provided with a limiting block 1005, which abuts against both sides of the connecting disk 6, and the limiting block 1005 and the first fastening claw 1001 abut against both sides of the connecting disk 6, respectively. The limiting blocks constrain the axial movement of the fasteners.

[0041] In addition, such as Figure 2 and Figure 4 As shown, the fasteners 10 are provided in two sets, one set for fastening the hub 1 and the other set for fastening the test cap 9. The two sets of fasteners 10 are connected by a sliding shaft 1004. The first fastening claw 1001 and / or the second fastening claw 1002 of the fasteners 10 for fastening the test cap 9 are provided with a second insert 1012. The test cap 9 is provided with a second slot 901. The second slot 901 has a second inclined surface 911. The second inclined surface 911 gradually slopes towards the central axis of the test cap 9 from the hub 1 to the test cap 9. When the first insert 1011 is inserted into the first slot 101, the second insert 1012 is also inserted into the second slot 901. The first inclined surface 1011 and the second inclined surface 911 allow the test cap 9 and the hub 1 to move relative to each other while being fastened, making the contact tighter.

[0042] Example 3

[0043] This embodiment presents a static umbilical cable deep-water pressure testing structure. Based on Embodiment 1 or Embodiment 2, this embodiment, as follows: Figure 2 and Figure 5 As shown, it also includes a positioning key 15 and a positioning ring 16. The positioning key 15 is arranged radially along the test cap 9 and is inserted into the test cap 9 and the connecting plate 6. The test cap 9 has a positioning groove 902 in its circumferential direction. The positioning ring 16 is located in the positioning groove 902, and its two ends abut against the test cap 9 and the connecting plate 6, respectively. The positioning key 15 positions the test cap 9 and the connecting plate 6 radially along the test cap 9, and the positioning ring 16 positions the test cap 9 and the connecting plate 6 axially along the test cap 9. By setting the positioning key 15 and the positioning ring 16, the test cap 9 and the connecting plate 6 are stably aligned and fixed, so that the test cap 9 and the hub 1 can be connected in an aligned manner through the connection between the connecting plate 6 and the hub 1.

[0044] like Figure 6 As shown, a locking assembly 17 connects the first mounting bracket 4 and the second mounting bracket 5. When the test cap 9 is lifted, the first mounting bracket 4 and the second mounting bracket 5 are locked together to prevent the second mounting bracket 5 from wobbling on the first mounting bracket 4.

[0045] The locking assembly 17 includes a first locking member 171 and a second locking member 172. The first locking member 171 is rotatably connected to the first mounting bracket 4 and is configured as a locking block, resembling a hook. The first locking member 171 is mounted on the second mounting bracket 5. The second locking member 172 is configured as a locking groove, with the first locking member 171 and the second locking member 172 engaging, i.e., the hook engaging the locking groove. When the test cap 9 is lifted, the second locking member 172 engages with the first locking member 171 to prevent the second mounting bracket 5 from sliding on the first mounting bracket 4. When it is necessary to slide the connecting plate 6, the first locking member 171 is rotated to separate the first locking member 171 from the first locking member 172.

[0046] like Figure 1 As shown, the support base and connecting plate 6 are coaxially provided with auxiliary grooves. These auxiliary grooves facilitate the placement of the ROV stroke lifting tool, allowing for better use of the ROV stroke lifting tool to slide the connecting plate 6 towards the support base. Figure 1 and Figure 3 As shown, the second mounting bracket 5 is equipped with an indicator arrow 18, which can also be located on the second snap-fit ​​member 172. The first mounting bracket 4 is equipped with two indicator marks 19, one indicating unlock and the other indicating lock. During sliding, the second mounting bracket 5 drives the indicator arrow 18 to move. When the indicator arrow 18 points to the locked indicator mark 19, it means that the fourth guide member 8 has fully engaged with the second guide member 3, and the ROV stroke lifting tool can be stopped, thereby ensuring a tight connection between the test cap 9 and the hub 1. When the indicator arrow 18 points to the unlocked indicator mark 19, it means that the fourth guide member 8 has fully disengaged from the second guide member 3, at which point the first guide member 2 can engage or disengage with the third guide member 7.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0048] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A static umbilical cable deep-water pressure testing structure, wherein the static umbilical cable is connected to a hub (1) of an underwater structure, characterized in that, The underwater structure also includes a first guide (2) and a second guide (3), both of which are connected to the hub (1). The first guide (2) is arranged radially along the hub (1), and the second guide (3) is arranged axially along the hub (1). The pressure test structure includes a first mounting bracket (4), a second mounting bracket (5), a connecting plate (6) mounted on the second mounting bracket (5), a third guide (7) mounted on the first mounting bracket (4), a fourth guide (8), a test cap (9), and a fastener. The device comprises a component (10), a socket (11), and a conductive connector (12). The second mounting bracket (5) is slidably connected to the first mounting bracket (4). The third guide (7) is connected to the first guide (2). The fourth guide (8) is located on the connecting plate (6) and is connected to the second guide (3). The test cap (9) is located on the connecting plate (6). The test cap (9) and the hub (1) are fastened together by the fastener (10). One end of the test cap (9) is electrically connected to the socket (11). The other end of the test cap (9) is electrically connected to the hub (1) via the conductive connector (12); the test cap (9) is provided with a fifth guide (13), and the hub (1) is provided with a sixth guide (14), the fifth guide (13) and the sixth guide (14) are connected in cooperation; the fastener (10) includes a first fastening claw (1001), a second fastening claw (1002) and a connecting member (1003) for tightening the first fastening claw (1001) and the second fastening claw (1002), the first fastening claw (1001) 1) Both the first fastening claw (1001) and the second fastening claw (1002) are connected to the connector (1003); the hub (1) is located between the first fastening claw (1001) and the second fastening claw (1002), and is abutted against both the first fastening claw (1001) and the second fastening claw (1002); the hub (1) is provided with a first slot (101), and the first fastening claw (1001) and / or the second fastening claw (1002) are provided with a first insert (1011), and the first insert (1011) is inserted into the first slot (101).

2. The static umbilical cable deep-water pressure test structure according to claim 1, characterized in that, The first slot (101) is provided with a first inclined surface (111), which gradually slopes from the test cap (9) to the hub (1) toward the central axis of the hub (1).

3. The static umbilical cable deep-water pressure test structure according to claim 1, characterized in that, Both the first fastening claw (1001) and the second fastening claw (1002) are provided with sliding shafts (1004), and the connecting disk (6) is provided with a sliding groove (601) that is slidably connected to the sliding shafts (1004).

4. The static umbilical cable deep-water pressure test structure according to claim 3, characterized in that, The sliding shaft (1004) is provided with a limiting block (1005), the limiting block (1005) and the first fastening claw (1001) respectively abut against the two sides of the connecting plate (6), and the limiting block (1005) and the second fastening claw (1002) respectively abut against the two sides of the connecting plate (6).

5. The static umbilical cable deep-water pressure test structure according to any one of claims 1 to 4, characterized in that, It also includes a positioning key (15) and a positioning ring (16). The positioning key (15) is arranged radially along the test cap (9). The positioning key (15) is inserted into the test cap (9) and the connecting plate (6). The test cap (9) is provided with a positioning groove (902) in the circumferential direction. The positioning ring (16) is located in the positioning groove (902), and its two ends abut against the test cap (9) and the connecting plate (6) respectively.

6. The static umbilical cable deep-water pressure test structure according to any one of claims 1 to 4, characterized in that, A locking assembly (17) is connected between the first mounting bracket (4) and the second mounting bracket (5).

7. The static umbilical cable deep-water pressure test structure according to claim 6, characterized in that, The locking assembly (17) includes a first latching member (171) and a second latching member (172). The first latching member (171) is rotatably connected to the first mounting bracket (4), and the second latching member (172) is mounted on the second mounting bracket (5). The first latching member (171) and the second latching member (172) are latched together.

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