An underwater oil-filled umbilical cable box and its oil injection and exhaust method

Abstract

The present invention discloses an underwater oil-filled umbilical cable box and an oil injection and exhaust method thereof. The umbilical cable box includes an umbilical cable box body and a cover plate. The cover plate covers the top of the umbilical cable box body. A main exhaust hole is provided at the center position of the cover plate. Auxiliary exhaust and oil injection holes are provided on both sides of the main exhaust hole on the cover plate. A hole height increasing component is provided in the main exhaust hole. The hole height increasing component has a height increasing component exhaust passage, and the height increasing component exhaust passage is communicated with the inner cavity of the umbilical cable box body. The outlet height of the height increasing component exhaust passage is higher than the outlet height of the auxiliary exhaust and oil injection holes. The underwater oil-filled umbilical cable box can shorten the oil injection time, greatly reduce the exhaust difficulty, has a good exhaust effect, does not require the cover plate to be made of a transparent material, and the umbilical cable box does not need to be installed completely horizontally during oil injection and exhaust.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater operation machinery, and in particular, to an underwater oil-filled umbilical cable box and a method for rapid oil injection and complete exhaust thereof. Background Art

[0002] After the umbilical cable box applicable to underwater operations, especially for deep-water operation machinery, is filled with oil, no air bubbles can be left inside. At present, the umbilical cable box adopts a working mode of side oil injection and single-hole exhaust on the upper panel. This operation mode has many disadvantages, which are mainly manifested in the following aspects:

[0003] (1) Due to the side oil injection method, when the oil level in the umbilical cable box is higher than the height of the side oil injection port, in order to inject oil into the umbilical cable box, the pressure generated by the existing oil level must be overcome, which affects the oil filling work efficiency.

[0004] (2) When the oil level in the umbilical cable box submerges the side oil injection port, the air mixed with the oil during oil filling will be compressed. As the gas in the umbilical cable box gradually increases, the volume of oil in the umbilical cable box will be correspondingly reduced, and the time for both oil filling and subsequent exhaust will increase synchronously.

[0005] (3) With the single-hole exhaust method on the upper panel, and the exhaust holes are all designed at the center position of the upper panel of the umbilical cable box. This design scheme must simultaneously meet the following conditions: a) The umbilical cable box needs to be installed completely horizontally. Only when it is installed completely horizontally can it be ensured that the air bubbles are located at the exact center position. If the umbilical cable box is slightly tilted, the position of the air bubbles will deviate from the center position, directly resulting in very difficult or even failed exhaust; b) The upper panel must be transparent. Only when the panel is transparent can the position of the air bubbles be observed. After observing the position of the air bubbles, methods including removing the fixing bolts of the umbilical cable box can be adopted for exhaust. In fact, in many working conditions, the method of removing the fixing bolts of the umbilical cable box is completely infeasible. Summary of the Invention

[0006] The main object of the present invention is to provide an underwater oil-filled umbilical cable box and an oil injection and exhaust method thereof. The underwater oil-filled umbilical cable box can shorten the oil injection time, greatly reduce the exhaust difficulty, has good exhaust effect, does not require the cover plate to be made of transparent material, and does not require the umbilical cable box to be installed completely horizontally.

[0007] To achieve the above object, according to one aspect of the present invention, there is provided an underwater oil-filled umbilical cable box, including an umbilical cable box body and a cover plate. The cover plate covers the top of the umbilical cable box body. A main exhaust hole is provided at the center position of the cover plate. Auxiliary exhaust and oil injection holes are provided on both sides of the main exhaust hole on the cover plate. A hole orifice heightening component is provided in the main exhaust hole. The hole orifice heightening component has a heightening component exhaust passage, and the heightening component exhaust passage is communicated with the inner cavity of the umbilical cable box body. The outlet height of the heightening component exhaust passage is higher than the outlet height of the auxiliary exhaust and oil injection holes.

[0008] Further, the orifice heightening component includes a hollow stud which is detachably installed in the main exhaust hole, and the inner cavity of the hollow stud is the exhaust passage of the heightening component.

[0009] Further, a plurality of auxiliary exhaust and oil injection holes are provided on both the left and right sides of the main exhaust hole on the cover plate, and the auxiliary exhaust and oil injection holes on both sides are symmetrically arranged with respect to the main exhaust hole.

[0010] Further, sealing plugs are detachably arranged in the main exhaust hole and the auxiliary exhaust and oil injection holes.

[0011] Further, a pressing plate is provided above the cover plate, and the pressing plate fixedly installs the edge of the cover plate on the top of the umbilical cable box body through a plurality of fastening members.

[0012] According to another aspect of the present invention, there is provided an oil injection and exhaust method for the underwater oil-filled umbilical cable box as described above, including the following steps:

[0013] Step S1: Open the sealing plugs in the main exhaust hole and the auxiliary exhaust and oil injection holes, install the orifice heightening component in the main exhaust hole, install an oil injection joint on any one of the auxiliary exhaust and oil injection holes, and start injecting oil into the umbilical cable box body;

[0014] Step S2: Observe whether there is oil overflow from other auxiliary exhaust and oil injection holes during the oil injection process. If there is oil overflow from the auxiliary exhaust and oil injection holes, seal the auxiliary exhaust and oil injection holes with sealing plugs until all the auxiliary exhaust and oil injection holes are completely sealed;

[0015] Step S3: Continue to inject oil into the umbilical cable box body, observe the oil level condition in the exhaust passage of the heightening component. If there is oil overflow in the exhaust passage of the heightening component, stop injecting oil;

[0016] Step S4: Remove the orifice heightening component and seal the main exhaust hole with a sealing plug.

[0017] Compared with the prior art, the present invention has the following technical effects:

[0018] (1) For the underwater oil-filled umbilical cable box of the present invention, the traditional method of injecting oil from the side of the umbilical cable box is changed to injecting oil from the upper surface (i.e., the cover plate) of the umbilical cable box. When injecting oil, there is no need to overcome the pressure generated by the oil level height, effectively improving the oil injection work efficiency.

[0019] (2) For the underwater oil-filled umbilical cable box of the present invention, through the mutual cooperation of the main exhaust hole, the auxiliary exhaust and oil injection holes and the orifice heightening component on the cover plate, the gas in the umbilical cable box can be excluded to the greatest extent.

[0020] (3) For the underwater oil-filled umbilical cable box of the present invention, when injecting oil, it is only necessary to observe whether there is oil overflow from the main exhaust hole and the auxiliary exhaust and oil injection holes to accurately understand the bubble condition inside the umbilical cable box. There is no need to exhaust air by observing the bubble position through the cover plate. The cover plate does not need to be made of transparent material, and the umbilical cable box does not need to be installed completely horizontally. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0022] Figure 1 is a front view structural schematic diagram of the underwater oil-filled umbilical cable box according to an embodiment of the present invention.

[0023] Figure 2 is Figure 1 a partial enlarged view of part A in

[0024] Figure 3 is a top view structural schematic diagram of the underwater oil-filled umbilical cable box according to an embodiment of the present invention.

[0025] Figure 4 is a sectional view taken along Figure 3 E-E in

[0026] Among them, the above-mentioned accompanying drawings include the following reference numerals:

[0027] 1. Umbilical cable box body; 2. Cover plate; 3. Orifice heightening component; 4. Sealing plug; 5. Pressure plate; 6. Fastener; 21. Main exhaust hole; 22. Auxiliary exhaust and oil injection hole; 31. Heightening component exhaust channel; 32. Hollow stud. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] For the convenience of understanding the present invention, the following will describe the present invention more comprehensively and in detail in conjunction with the accompanying drawings of the specification and preferred embodiments, but the protection scope of the present invention is not limited to the following specific embodiments.

[0029] Unless otherwise defined, all the technical terms used hereinafter have the same meaning as commonly understood by those skilled in the art. The words such as "a" or "an" used in the specification and claims of this patent application do not indicate a limitation in quantity, but mean that there is at least one. The words such as "connected" or "coupled" are not limited to direct connection, but can be indirectly connected through other intermediate connectors. The "upper", "lower", "left", "right", etc. are only used to represent the relative positional relationship, and when the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0030] See Figures 1 to 4, an underwater oil-filled umbilical cable box according to an embodiment of the present invention. The underwater oil-filled umbilical cable box mainly includes an umbilical cable box body 1 and a cover plate 2. Among them, the cover plate 2 covers the top of the umbilical cable box body 1. A main exhaust hole 21 is provided at the center position of the cover plate 2, and auxiliary exhaust and oil injection holes 22 are provided on both sides of the main exhaust hole 21 on the cover plate 2. The main exhaust hole 21 and the auxiliary exhaust and oil injection holes 22 are both connected to the inner cavity of the umbilical cable box body 1; a hole height increasing component 3 is provided in the main exhaust hole 21. The hole height increasing component 3 has a height increasing component exhaust passage 31. The height increasing component exhaust passage 31 is connected to the inner cavity of the umbilical cable box body 1 through the main exhaust hole 21, and the outlet height (i.e., the upper port height) of the height increasing component exhaust passage 31 is higher than the outlet height of the auxiliary exhaust and oil injection holes 22.

[0031] For the above-mentioned underwater oil-filled umbilical cable box, by providing a main exhaust hole 21 at the center position of the cover plate 2, providing auxiliary exhaust and oil injection holes 22 on both sides of the main exhaust hole 21, providing a hole height increasing component 3 in the main exhaust hole 21, and the outlet height of the height increasing component exhaust passage 31 of the hole height increasing component 3 is higher than the outlet height of the auxiliary exhaust and oil injection holes 22; when it is necessary to inject oil into the umbilical cable box, install an oil injection joint on any one of the auxiliary exhaust and oil injection holes 22 to start injecting oil. During the oil injection process, observe whether there is oil overflow from other auxiliary exhaust and oil injection holes 22. If there is oil overflow from the auxiliary exhaust and oil injection holes 22, seal the auxiliary exhaust and oil injection holes 22 until all the auxiliary exhaust and oil injection holes 22 are completely sealed (since the outlet height of the height increasing component exhaust passage 31 is higher than the outlet height of the auxiliary exhaust and oil injection holes 22, there will be no oil overflow in the height increasing component exhaust passage 31 at this time); continue to inject oil into the umbilical cable box, observe the oil level condition in the height increasing component exhaust passage 31. If there is oil overflow in the height increasing component exhaust passage 31, it means that the umbilical cable box is full, and stop injecting oil.

[0032] The above-mentioned underwater oil-filled umbilical cable box changes the traditional method of injecting oil from the side of the umbilical cable box to injecting oil from the upper surface of the umbilical cable box (i.e., the cover plate 2), which improves the oil injection speed; through the cooperation of the main exhaust hole 21, the auxiliary exhaust and oil injection holes 22 and the hole height increasing component 3, the gas in the umbilical cable box can be excluded to the greatest extent; when injecting oil, only need to observe whether there is oil overflow from the main exhaust hole 21 and the auxiliary exhaust and oil injection holes 22 to accurately understand the bubble condition inside the umbilical cable box, without having to exhaust gas by observing the bubble position through the cover plate 2. The cover plate 2 does not need to be made of transparent material, and the umbilical cable box does not need to be installed completely horizontally. This umbilical cable box can significantly improve the oil injection work efficiency and the reliability of oil injection and exhaust, and well overcome the problems of difficult exhaust and low work efficiency in the existing solutions. Moreover, the cover plate 2 does not need to be made of transparent material, and the umbilical cable box does not need to be installed completely horizontally during oil injection and exhaust.

[0033] Specifically, in this embodiment, the orifice heightening assembly 3 includes a hollow stud 32 which is detachably installed in the main exhaust hole 21. The inner cavity of the hollow stud 32 is the exhaust passage 31 of the heightening assembly. The exhaust passage 31 of the heightening assembly is connected to the inner cavity of the umbilical cable box body 1 through the main exhaust hole 21. The hollow stud 32 is connected to the main exhaust hole 21 through threaded fit and is sealed at the connection to prevent oil from overflowing from the connection between the hollow stud 32 and the main exhaust hole 21.

[0034] With such a setting, the orifice heightening assembly 3 is set to be detachably connected to the main exhaust hole 21. After the umbilical cable box is filled with oil, the orifice heightening assembly 3 can be removed and the main exhaust hole 21 can be blocked and sealed, so that the cover plate 2 of the umbilical cable box can be restored to a flat state, reducing the space required for the installation of the umbilical cable box.

[0035] In this embodiment, two auxiliary exhaust and oil injection holes 22 are provided on both the left and right sides of the main exhaust hole 21 on the cover plate 2, and the auxiliary exhaust and oil injection holes 22 on the left and right sides are symmetrically arranged with respect to the main exhaust hole 21. In this way, exhaust can be carried out more conveniently. When the umbilical cable box is not placed completely horizontally, no matter which side the umbilical cable box tilts, the gas in the umbilical cable box can be quickly discharged through the auxiliary exhaust and oil injection holes 22, thereby further improving the oil injection efficiency.

[0036] In this embodiment, sealing plugs 4 are detachably arranged in both the main exhaust hole 21 and the auxiliary exhaust and oil injection holes 22. The sealing plugs 4 are used to seal the main exhaust hole 21 and the auxiliary exhaust and oil injection holes 22 after the umbilical cable box is filled with oil. During the oil injection process, when oil overflows from a certain auxiliary exhaust and oil injection hole 22, it means that the gas here has been exhausted. A sealing plug 4 is inserted into the auxiliary exhaust and oil injection hole 22 to seal it; in this way, the sealing of all the auxiliary exhaust and oil injection holes 22 is completed in sequence; finally, when oil overflows from the exhaust passage 31 of the heightening assembly, it means that all the gas in the entire umbilical cable box has been exhausted. The orifice heightening assembly 3 is removed, and the main exhaust hole 21 is blocked and sealed with the sealing plug 4.

[0037] In this embodiment, a pressing plate 5 is provided above the cover plate 2. The pressing plate 5 fixedly installs the edge of the cover plate 2 on the top of the umbilical cable box body 1 through a plurality of fasteners 6. The pressing plate 5 is arranged around the edge of the cover plate 2. By using the fasteners 6 and the pressing plate 5 to press and fix the cover plate 2 on the umbilical cable box body 1, the sealing performance between the cover plate 2 and the umbilical cable box body 1 can be improved and it is convenient for disassembly. The fasteners 6 can adopt existing structures such as screws.

[0038] The oil injection and exhaust method of this underwater oil-filled umbilical cable box is as follows:

[0039] First, open the sealing plugs 4 in the main exhaust hole 21 and the auxiliary exhaust and oil injection holes 22. Install the orifice heightening assembly 3 in the main exhaust hole 21, install an oil injection connector on any one of the auxiliary exhaust and oil injection holes 22, and start injecting oil into the umbilical cable box body 1;

[0040] During the oil injection process, observe whether there is oil overflow from the other auxiliary exhaust and oil injection holes 22. If there is oil overflow from a certain auxiliary exhaust and oil injection hole 22, seal this auxiliary exhaust and oil injection hole 22 with the sealing plug 4 until all the auxiliary exhaust and oil injection holes 22 are completely sealed;

[0041] After all the auxiliary exhaust and oil injection holes 22 are completely sealed, continue to inject oil into the umbilical cable box body 1 and observe the oil level condition in the exhaust passage 31 of the heightening assembly. If there is oil overflow in the exhaust passage 31 of the heightening assembly, it means that the umbilical cable box is completely filled with oil and all the gas in the umbilical cable box has been discharged, then stop injecting oil;

[0042] Finally, remove the orifice heightening assembly 3 in the main exhaust hole 21 and seal the main exhaust hole 21 with the sealing plug 4, thus completing the oil injection and exhaust of the umbilical cable box.

[0043] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Method for oil injection and air exhaust of underwater oil-filled umbilical cable box, characterized in that, It includes the following steps: Step S1: Open the sealing plugs (4) in the main exhaust hole (21) and the auxiliary exhaust and oil injection holes (22), install the orifice heightening component (3) in the main exhaust hole (21), install an oil injection joint on any one of the auxiliary exhaust and oil injection holes (22), and start injecting oil into the umbilical cable box body (1); Step S2: During the oil injection process, observe whether there is oil overflow from the other auxiliary exhaust and oil injection holes (22). If there is oil overflow from the auxiliary exhaust and oil injection holes (22), seal the auxiliary exhaust and oil injection holes (22) with the sealing plugs (4) until all the auxiliary exhaust and oil injection holes (22) are completely sealed; Step S3: Continue to inject oil into the umbilical cable box body (1), observe the oil level condition in the heightening component exhaust passage (31). If there is oil overflow in the heightening component exhaust passage (31), stop injecting oil; Step S4: Remove the orifice heightening component (3) and seal the main exhaust hole (21) with the sealing plug (4); The underwater oil-filled umbilical cable box includes an umbilical cable box body (1) and a cover plate (2). The cover plate (2) covers the top of the umbilical cable box body (1). A main exhaust hole (21) is provided at the central position of the cover plate (2). Auxiliary exhaust and oil injection holes (22) are provided on both sides of the main exhaust hole (21) on the cover plate (2). An orifice heightening component (3) is provided in the main exhaust hole (21). The orifice heightening component (3) has a heightening component exhaust passage (31). The heightening component exhaust passage (31) communicates with the inner cavity of the umbilical cable box body (1). The outlet height of the heightening component exhaust passage (31) is higher than the outlet height of the auxiliary exhaust and oil injection holes (22); Removably arranged sealing plugs (4) are provided in the main exhaust hole (21) and the auxiliary exhaust and oil injection holes (22).

2. The oil injection and exhaust method of the underwater oil-filled umbilical cable box according to claim 1, characterized in that, The orifice heightening component (3) includes a hollow stud (32). The hollow stud (32) is removably installed in the main exhaust hole (21). The inner cavity of the hollow stud (32) is the heightening component exhaust passage (31).

3. The oil injection and exhaust method of the underwater oil-filled umbilical cable box according to claim 1, characterized in that, A plurality of the auxiliary exhaust and oil injection holes (22) are provided on the left and right sides of the main exhaust hole (21) on the cover plate (2). The auxiliary exhaust and oil injection holes (22) on the left and right sides are symmetrically arranged with respect to the main exhaust hole (21).

4. The oil injection and exhaust method of the underwater oil-filled umbilical cable box according to claim 1, characterized in that A pressing plate (5) is provided above the cover plate (2). The pressing plate (5) fixedly installs the edge of the cover plate (2) on the top of the umbilical cable box body (1) through a plurality of fasteners (6).

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