CN113671654A - Pressure-resistant sealed cabin for deep-sea optical cable - Google Patents
Pressure-resistant sealed cabin for deep-sea optical cable Download PDFInfo
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- CN113671654A CN113671654A CN202111237089.XA CN202111237089A CN113671654A CN 113671654 A CN113671654 A CN 113671654A CN 202111237089 A CN202111237089 A CN 202111237089A CN 113671654 A CN113671654 A CN 113671654A
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- sealing
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- end cover
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4441—Boxes
- G02B6/4446—Cable boxes, e.g. splicing boxes with two or more multi fibre cables
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
Abstract
The application relates to submarine optical cable equipment technical field provides a withstand voltage sealed cabin of deep sea optical cable, includes: the pressure-bearing cylinder is provided with a sealing port at least one end part, and the sealing end cover is fastened on a compression ring on the sealing port; the sealing port is provided with at least one primary airtight sealing surface and one primary watertight sealing surface; the sealing end cover is provided with a sealing pressure surface and a sealing groove; a first sealing ring is arranged between the airtight sealing surface and the sealing pressure surface, and a second sealing ring is clamped in the sealing groove. The application provides a pair of withstand voltage sealed cabin of deep sea optical cable, based on deep sea high pressure corrosion environment, for guaranteeing safety, bearing cylinder and end cover set up to high compressive structures, adopt multistage seal assembly to block water and choke setting between end cover and the bearing cylinder, have integrated deep sea compressive technology, watertight and airtight technique for photoelectric device and deep sea water are separated in the equipment.
Description
Technical Field
The application relates to the technical field of submarine optical cable equipment, in particular to a pressure-resistant sealed cabin for a deep-sea optical cable.
Background
The submarine optical cable system is used as transoceanic communication equipment, has been greatly developed compared with the early construction stage, and transoceanic communication services are basically born by submarine optical cables. With the technology updating, besides transoceanic communication, other ocean platform equipment, seabed detection equipment and island construction far away from continents also enable the field of submarine optical communication service development to be larger and larger, and multi-platform communication of transoceanic communication depends on submarine optical communication technology.
The underwater communication equipment is a key equipment of an submarine optical cable system, and comprises a submarine optical cable branch equipment (BU), a submarine Repeater (RPT) and the like, wherein according to the design requirement of the submarine optical cable system, part of the underwater communication equipment needs to be arranged in a deep sea environment, the underwater communication equipment arranged in the deep sea environment needs to bear higher seawater pressure, and meanwhile, the underwater communication equipment has air tightness and water tightness for use in the deep sea.
In order to realize the sealing of the underwater communication equipment, the underwater communication equipment is required to be arranged in a sealed cabin, a channel is arranged on the sealed cabin, so that the communication connection between the inside and the outside of the sealed cabin is realized through the arranged channel, the sealed cabin comprises a cabin body and a sealing structure, the sealing mode in the prior art is single, for example, an O-shaped sealing ring is arranged between the sealing cover and the cabin body, the sealing end surface is mostly of a simple flat flange structure, and the sealed cabin is of a simple cylinder structure and has insufficient pressure-bearing grade; the sealing mode is single, the performance is poor, the waterproof capability is insufficient under the deep sea high water pressure environment, and the air resistance function is basically not generated; when the water pressure is high, the pressure of the sealing ring on the seawater is high, the risk of failure due to overlarge pressure exists, the reliability is greatly low, and the safety performance of equipment is reduced; for example, the seal cap and the cabin are welded by metal and sealed by metal welding, but the welding seal grade is low, and the gas leakage is easy and the repair is impossible.
Disclosure of Invention
In order to provide an equipment sealed cabin suitable for deep sea environment to guarantee that the underwater communication equipment who sets up in deep sea environment can normally work, the embodiment of this application provides a withstand voltage sealed cabin of deep sea optical cable.
The application provides a withstand voltage sealed cabin of deep sea optical cable includes: the pressure-bearing cylinder is provided with a sealing port at least one end part; the sealing end cover is fixed on the sealing port, and the sealing end cover is fixed on the sealing port through a clamping ring;
the sealing port is provided with at least one primary airtight sealing surface and one primary watertight sealing surface; the sealing end cover is provided with a sealing pressure surface matched with the airtight sealing surface and a sealing groove attached to the watertight sealing surface;
a first sealing ring is arranged between the airtight sealing surface and the sealing pressure surface, and a second sealing ring is connected in the sealing groove in a clamping mode.
Like this, based on deep sea high pressure corrosion environment, for guaranteeing safety, pressure-bearing cylinder and end cover set up to high pressure-resistant structure, adopt multistage seal assembly to block water and choke setting between end cover and the pressure-bearing cylinder, integrated deep sea resistance to compression technique, watertight and airtight technique for photoelectric device and deep sea water are separated in the equipment.
In one implementation, the sealing port is provided with a limiting surface, the sealing end cover is provided with a pressing surface, the pressing ring is detachably fixed on the limiting surface and presses the pressing surface, and the pressing surface protrudes outwards compared with the limiting surface.
Therefore, after the compression ring is fixed on the limiting surface, enough pressure can be applied to the compression surface, namely, the compression ring can apply enough pressure to the first sealing ring, so that the first sealing ring is in a compression state, and a better airtight effect is achieved.
In one implementation, the sealing port is provided with an internal thread, and the clamp ring is provided with an external thread matched with the internal thread.
Therefore, in the actual installation process, a certain pressure is applied to the sealing end cover through a press machine, the pressing ring is screwed to the sealing port of the pressure-bearing cylinder after the sealing end cover is pressed in place, and the pressing ring is guaranteed to apply enough acting force to the sealing end cover after the pressing ring is completely screwed in place.
In one implementation, the clamp ring is provided with a plurality of fastening threaded holes and fastening screws, and the fastening screws are connected with and penetrate through the fastening threaded holes so as to tightly push the sealing end cover.
Therefore, after the clamp ring is completely screwed in place and the press machine is withdrawn, the clamping screw hole is connected through the clamping screw, a certain jacking effect is exerted on the sealing end cover, and the problem that the fastening force received by the sealing end cover is reduced due to stress release factors in the long-term use process is effectively solved.
In one implementation, a sealing ring limiting boss is further arranged on the sealing pressing surface to prevent the first sealing ring from being excessively pressed.
Therefore, a better sealing effect can be ensured, and particularly in the installation process of the set screw, the problem that the first sealing ring is excessively stressed to cause larger deformation is avoided. The limit boss of the sealing ring can limit the compression amount of the first sealing ring, and the first sealing ring is guaranteed to be in a proper compression range, so that the situation that the first sealing ring is excessively compressed to cause reduction of the sealing effect is avoided.
In one implementation, the sealing end cap is provided with a plurality of sealing grooves, and the sealing grooves are all arranged on the circumferential surface of the watertight sealing surface in a fitting manner.
Like this, it is a plurality of the seal groove sets up side by side to play the purpose of multiple protection, even outmost seal groove is broken through, follow-up still has a plurality of seal grooves to play waterproof sealing effect.
In one implementation, the end face of the outer side of the end cover is designed as a convex ball.
Therefore, the sealing end cover designed by the convex ball can realize integral pressure compensation outside the sealing end cover in direct contact with seawater, the pressure resistance of the sealing end cover is enhanced, and the pressure bearing performance in deep sea is improved. In addition, the convex ball with the curve shape can also reduce the weight as much as possible under the condition of ensuring proper strength.
In one implementation, the pressure-bearing cylinder is divided into two end cylinders and a middle cylinder located between the two end cylinders, and the outer diameter of the middle cylinder is smaller than that of the end cylinders.
Like this, the middle part diameter of a pressure-bearing section of thick bamboo is little, and both ends position diameter is big, and the high hydrostatic pressure of satisfying deep sea that can be better bears the demand, guarantees that the sealed cabin can not take place buckling strength inefficacy.
In one implementation, the first seal ring is made of metal or rubber.
Therefore, the first sealing ring is made of metal materials preferentially, the metal sealing ring is extruded and deformed to achieve the sealing effect by applying enough pressure, and the air tightness of the first sealing ring is better than that of rubber materials.
In one implementation, the first seal ring is an elastic metal airtight ring.
In one implementation, the first sealing ring is a hollow ring, and the cross-sectional shape of the hollow ring is an ellipse, a rhombus or a double rhombus.
In one implementation, the roughness of the hermetic sealing surface and the sealing press surface is R7.
In one implementation, the second seal ring is made of rubber.
In one implementation, the sealing end cap is further provided with an end cap channel to realize communication between the inside and the outside of the pressure-bearing cylinder.
According to the technical scheme, the embodiment of the application provides a pressure-resistant sealed cabin for deep sea optical cables, which comprises: the pressure-bearing cylinder is provided with a sealing port at least one end part, and also comprises a sealing end cover and a pressing ring for fastening the sealing end cover on the sealing port; the sealing port is provided with at least one primary airtight sealing surface and one primary watertight sealing surface; the sealing end cover is provided with a sealing pressure surface matched with the airtight sealing surface and a sealing groove attached to the watertight sealing surface; a first sealing ring is arranged between the airtight sealing surface and the sealing pressure surface, and a second sealing ring is connected in the sealing groove in a clamping mode.
The application provides a pair of withstand voltage sealed cabin of deep sea optical cable, based on deep sea high pressure corrosion environment, for guaranteeing safety, bearing cylinder and end cover set up to high compressive structures, adopt multistage seal assembly to block water and choke setting between end cover and the bearing cylinder, can use screw thread pair and hoop screw fastening interlocking setting to carry out multiple compression seal between end cover and the clamp ring, deep sea resistance to compression technique has been integrated, watertight and airtight technique for optoelectronic device and deep sea water are separated in the equipment.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of an overall explosion structure of a deep-sea optical cable pressure-tight sealed cabin provided in an embodiment of the present application;
fig. 2 is an overall cross-sectional schematic view of a deep sea optical cable pressure-tight cabin according to an embodiment of the present application;
FIG. 3 is a partial schematic view of the general cross-section of FIG. 2;
fig. 4 is a schematic partial cross-sectional view of a pressure-bearing cartridge provided in an embodiment of the present application;
FIG. 5 is a schematic cross-sectional view of a hermetic end cap provided in accordance with an embodiment of the present application;
figure 6 is a schematic view of a hold-down ring structure provided by an embodiment of the present application;
FIG. 7 is a schematic cross-sectional view of a pressure-bearing cartridge according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a multi-channel end closure according to an embodiment of the present application.
In the figure: 1-pressure bearing cylinder, 11-airtight sealing surface, 12-watertight sealing surface, 13-limiting surface, 14-end cylinder, 15-middle cylinder, 2-sealing end cover, 21-sealing pressure surface, 22-sealing groove, 23-sealing ring limiting boss, 24-end cover channel, 25-pressing surface, 3-pressing ring, 31-fastening threaded hole, 32-fastening screw, 4-first sealing ring and 5-second sealing ring.
Detailed Description
In the embodiment of the present application, the submarine optical cable system refers to a communication network system formed by a plurality of communication cables. The communication cables in the system are laid on the seabed and may therefore be referred to as submarine cables. The submarine cable line can transmit optical communication signals between end stations, and the function of cross-sea area communication is achieved. Submarine cable systems can enable long distance communications, for example, data communications can be accomplished across the ocean for tens of thousands of kilometers. It should be noted that the submarine cable system described in the embodiments of the present application can also be used in relatively close communication areas such as river crossing, lake crossing, etc.
The device sealed cabin is suitable for deep sea environment, so that underwater communication devices arranged in the deep sea environment can work normally.
As shown in fig. 1, a schematic diagram of an overall explosion structure of a deep-sea optical cable pressure-tight capsule provided in an embodiment of the present application is shown. The embodiment of the application provides a withstand voltage sealed cabin of deep sea optical cable includes: the pressure bearing cylinder 1 is provided with at least one end part provided with a sealing port, the pressure bearing cylinder 1 is of a long cylindrical structure, the two end parts are generally provided with the sealing ports, but the pressure bearing cylinder is not limited to the two end parts which are provided with the sealing ports, and only one sealing port can be arranged according to actual requirements.
Fig. 2 is a schematic overall cross-sectional view of a deep-sea optical cable pressure-tight cabin according to an embodiment of the present disclosure; FIG. 3 is a partial schematic view of the entire cross-section of FIG. 2; the sealing port is provided with a sealing structure for sealing, and the sealing structure comprises a sealing end cover 2 and a compression ring 3 for fastening the sealing end cover 2 on the sealing port. As shown in fig. 4, which is a schematic partial cross-sectional view of a pressure-bearing cartridge provided in an embodiment of the present application, at least one primary airtight sealing surface 11 and one primary watertight sealing surface 12 are provided on the sealing port; as shown in fig. 5, in order to provide a schematic cross-sectional view of the end cap according to the embodiment of the present invention, a sealing pressure surface 21 that engages with the airtight sealing surface 11 is provided on the end cap 2, a first seal ring 4 is provided between the airtight sealing surface 11 and the sealing pressure surface 21, and the first seal ring 4 is pressed between the airtight sealing surface 11 and the sealing pressure surface 21 by the airtight sealing surface 11 engaging with the sealing pressure surface 21.
The sealing end cover 2 is provided with a sealing groove 22 attached to the watertight sealing surface 12; a second sealing ring 5 (see fig. 1, not shown in fig. 5) is snapped into the sealing groove 22. The fitting means that the plane of the seal groove 22 is closely attached to the watertight sealing surface 12.
In practical application, the first seal ring 4 arranged between the gas-tight sealing surface 11 and the sealing pressure surface 21 is pressed and deformed by the pressing action of the pressing ring 3, so as to seal the contact part of the gas-tight sealing surface 11 and the sealing pressure surface 21, and in order to ensure the sealing effect, the roughness of the gas-tight sealing surface 11 and the sealing pressure surface 21 is R7.
The sealing performance between the end cover 2 and the sealing port is ensured by the combined design of the airtight sealing surface 11 and the watertight sealing surface 12, and in a multi-stage sealing mode, the one-stage sealing surface closest to the outside seawater must be set as the watertight sealing surface 12.
The first sealing ring 4 is made of metal or rubber, preferably made of metal, and is pressed and deformed by applying a sufficient pressure to achieve a sealing effect, for example, an elastic metal airtight ring is used, and the elastic metal airtight ring may be made of solid plastic metal such as red copper, or may be a high-precision hollow ring welded by a thin-wall copper pipe, a stainless steel pipe, a nickel alloy pipe or a monel alloy pipe, and the cross-sectional shape of the hollow ring is oval, rhombic or double-rhombic.
In order to ensure that the compression ring 3 can apply a sufficient pressure to the first seal ring 4, as shown in fig. 3 and 5, in some embodiments of the present application, a limiting surface 13 is disposed on the seal port, a compression surface 25 is disposed on the seal end cover 2, the compression ring 3 is detachably fixed on the limiting surface 13, compresses the compression surface 25, and the compression surface 25 protrudes outward compared to the limiting surface 13. By projecting the pressing surface 25 further outward, the pressure applied to the pressing surface 25, i.e. the first sealing ring 4, is ensured to be in a pressed state. Meanwhile, due to the existence of the limiting surface 13, the position of the compression ring 3 can be limited, and the sealing end cover 2 cannot excessively apply pressure to the first sealing ring 4 in the installation process of the compression ring 3, so that the first sealing ring 4 is prevented from being damaged.
In order to realize the installation of the sealing end cover 2, in some embodiments of the present application, an internal thread is provided on the sealing port, and an external thread matching with the internal thread is provided on the compression ring 3.
Specifically, in the installation process of the clamp ring 3, in order to ensure that sufficient pressure is applied to the first seal ring 4, in the actual installation process, the first seal ring 4 and the seal end cover 2 are firstly placed at preset positions, then a certain pressure is applied to the seal end cover 2 through a press machine, after the seal end cover 2 is pressed in place, the clamp ring 3 is screwed onto the seal port of the pressure bearing cylinder 1 by using the thread fit principle, and after the clamp ring is completely screwed in place, the press machine is withdrawn.
Further, because in the installation of end cover 2, install through the press, in order to avoid long-term use in-process, because stress release factor, lead to the fastening force that end cover 2 received to descend, in this application's some embodiments, in order to guarantee end cover 2's sealed effect is better to and satisfy 25 years's of submarine cable business sealed ageing requirement, be provided with a plurality of holding screw holes 31 and holding screw 32 on the clamp ring 3, just holding screw 32 connects and runs through holding screw hole 31, with the top tight end cover, directly push up promptly the compact surface 25.
In the actual installation process, after the clamp ring 3 is completely screwed in place and the press is withdrawn, the clamp screw 32 is connected with and penetrates through the fastening threaded hole 31 to tightly press the clamp surface 25 of the end cap 2, so that a certain pressing effect is exerted on the end cap 2.
In order to ensure a better sealing effect, particularly in the installation process of the set screw 32, in order to avoid the first sealing ring 4 from being compressed excessively and causing a large deformation, as shown in fig. 5, in some embodiments of the present application, the inner ring of the sealing pressing surface 21 is further provided with a sealing ring limiting boss 23, and in the installation process of the set screw 32, when an acting force is applied to the end cover 2 through the set screw 32, the first sealing ring 4 is prevented from being compressed excessively.
In order to improve the water blocking effect of the end cap 2, as shown in fig. 5, in some embodiments of the present application, the number of the sealing grooves 22 provided on the end cap 2 is multiple, and the sealing grooves are all provided on the circumferential surface attached to the watertight sealing surface 12. And a second sealing ring 5 is arranged in a plurality of sealing grooves 22 arranged side by side, so that the joint of the sealing end cover 2 and the sealing port is axially sealed. Wherein, the material of second sealing washer is rubber.
Further, in order to improve the pressure resistance of the end cover 2, as shown in fig. 5, in some embodiments of the present application, the outer end face of the end cover 2 is designed as a convex ball, the end cover 2 serves as a pressure-bearing sealing structure, and the convex ball is designed into a curved shape by directly contacting the exterior with seawater, so that the overall pressure compensation can be realized, the pressure resistance of the end cover 2 is enhanced, and the pressure bearing performance in deep sea is improved. In addition, the convex ball with the curve shape can also reduce the weight as much as possible under the condition of ensuring proper strength, and meanwhile, the transfer and the installation of the sealing end cover 2 are convenient.
The inner side surface of the sealing end cover 2 can provide a mounting and fixing base station for devices such as photoelectricity and the like in the pressure bearing cylinder 1, the surface requirement cannot have any defect, and the airtight and watertight performance failure of the sealing end cover 2 is avoided. As shown in fig. 3 and fig. 5, an end cover channel 24 is further provided on the sealing end cover 2 to implement communication between the inside and the outside of the pressure-bearing cylinder 1, and it should be noted that a corresponding sealing device is also provided on the end cover channel 24 to implement sealing between the inside and the outside of the pressure-bearing cylinder 1.
In order to further enhance the deep sea high hydrostatic pressure bearing capacity of the pressure bearing cylinder 1, as shown in fig. 7, an overall cross-sectional view of the pressure bearing cylinder provided in this embodiment of the present application is schematically shown, in this embodiment of the present application, the pressure bearing cylinder 1 is divided into two end cylinders 14 and an intermediate cylinder 15 located between the two end cylinders 14, and an outer diameter of the intermediate cylinder 15 is smaller than an outer diameter of the end cylinders 14. The thick-wall structure with the small diameter at the middle part and the large diameters at the two ends can meet the requirement for bearing the deep-sea high hydrostatic pressure, and the sealed cabin is ensured not to fail due to the buckling strength.
According to the technical scheme, the embodiment of the application provides a pressure-resistant sealed cabin for deep sea optical cables, which comprises: the pressure bearing device comprises a pressure bearing cylinder 1, a sealing end cover 2 and a compression ring 3, wherein at least one end part of the pressure bearing cylinder 1 is provided with a sealing port, and the compression ring 3 is used for fastening the sealing end cover 2 on the sealing port; the sealing port is provided with at least one primary airtight sealing surface 11 and one primary watertight sealing surface 12; the sealing end cover 2 is provided with a sealing pressure surface 21 matched with the airtight sealing surface 11 and a sealing groove 22 attached to the watertight sealing surface 12; a first sealing ring 4 is arranged between the airtight sealing surface 11 and the sealing pressure surface 21, and a second sealing ring 5 is clamped in the sealing groove 22.
The application provides a pair of withstand voltage sealed cabin of deep sea optical cable, based on deep sea high pressure corrosion environment, for guaranteeing safety, pressure-bearing cylinder 1 and end cover 2 set up to high compressive structures, adopt multistage seal assembly to block water and choke setting between end cover 2 and the pressure-bearing cylinder 1, can use screw thread pair and hoop screw fastening interlocking setting to carry out multiple compression seal between end cover 2 and the clamp ring 3, deep sea compressive technology has been integrated, watertight and airtight technology, make photoelectric device and deep sea water separate in the equipment.
The above embodiments are provided to explain the purpose, technical solutions and advantages of the present application in further detail, and it should be understood that the above embodiments are merely illustrative of the present application and are not intended to limit the scope of the present application, and any modification, equivalent replacement, improvement, etc. made on the basis of the technical solutions of the present application should be included in the scope of the present application.
Claims (11)
1. A deep sea optical cable pressure tight capsule, comprising: the pressure bearing device comprises a pressure bearing barrel (1), wherein at least one end part of the pressure bearing barrel (1) is provided with a sealing port, and the pressure bearing device is characterized by further comprising a sealing end cover (2) and a compression ring (3) for fastening the sealing end cover (2) on the sealing port;
the sealing port is provided with at least one primary airtight sealing surface (11) and one primary watertight sealing surface (12); the sealing end cover (2) is provided with a sealing pressure surface (21) matched with the airtight sealing surface (11) and a sealing groove (22) attached to the watertight sealing surface (12);
a first sealing ring (4) is arranged between the airtight sealing surface (11) and the sealing pressure surface (21), and a second sealing ring (5) is clamped in the sealing groove (22);
the sealing end cover is characterized in that a plurality of fastening threaded holes (31) and fastening screws (32) are formed in the compression ring (3), and the fastening screws (32) are connected with and penetrate through the fastening threaded holes (31) to tightly push the sealing end cover (2).
2. The deep sea optical cable pressure-resistant sealed cabin according to claim 1, wherein a limiting surface (13) is arranged on the sealed port, a pressing surface (25) is arranged on the sealed end cover (2), the pressing ring (3) is detachably fixed on the limiting surface (13) to press the pressing surface (25), and compared with the limiting surface (13), the pressing surface (25) protrudes outwards.
3. The deep sea optical cable pressure tight capsule of claim 1, wherein the sealing port is provided with an internal thread, and the clamp ring (3) is provided with an external thread matching with the internal thread.
4. The deep sea optical cable pressure tight cabin according to claim 1, wherein the sealing pressure surface (21) is further provided with a sealing ring limiting boss (23) to avoid over-compression of the first sealing ring (4).
5. The deep sea optical cable pressure tight capsule according to claim 1, wherein the number of the sealing grooves (22) arranged on the sealing end cover (2) is multiple, and the sealing grooves are arranged on the circumferential surface attached to the watertight sealing surface (12).
6. The deep sea optical cable pressure tight capsule as claimed in claim 1, characterized in that the outer end face of the end cap (2) is convex ball design.
7. The deep sea optical cable pressure tight capsule according to claim 1, wherein the pressure cylinder (1) is divided into two end cylinders (15) and an intermediate cylinder (16) between the two end cylinders (15), and the outer diameter of the intermediate cylinder (16) is smaller than that of the end cylinders (15).
8. The deep sea optical cable pressure tight capsule as claimed in claim 1, wherein the material of said first sealing ring (4) is metal or rubber.
9. The deep sea optical cable pressure tight capsule as claimed in claim 1, wherein said first sealing ring (4) is an elastic metal airtight ring.
10. The deep sea optical cable pressure tight capsule according to claim 1, wherein the first sealing ring (4) is a hollow ring, and the cross-sectional shape of the hollow ring is oval, diamond or double diamond.
11. The deep sea cable pressure tight capsule according to claim 1, wherein the roughness of said airtight sealing surface (11) and said sealing pressing surface (21) is R7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111237089.XA CN113671654A (en) | 2021-10-25 | 2021-10-25 | Pressure-resistant sealed cabin for deep-sea optical cable |
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| CN202111237089.XA CN113671654A (en) | 2021-10-25 | 2021-10-25 | Pressure-resistant sealed cabin for deep-sea optical cable |
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| CN113671654A true CN113671654A (en) | 2021-11-19 |
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| CN202111237089.XA Pending CN113671654A (en) | 2021-10-25 | 2021-10-25 | Pressure-resistant sealed cabin for deep-sea optical cable |
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| CN114863954A (en) * | 2022-05-05 | 2022-08-05 | 中国科学院地质与地球物理研究所 | Large-capacity storage device for collecting underwater acoustic signals for long time and at high speed |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114863954A (en) * | 2022-05-05 | 2022-08-05 | 中国科学院地质与地球物理研究所 | Large-capacity storage device for collecting underwater acoustic signals for long time and at high speed |
| CN116202440A (en) * | 2023-02-08 | 2023-06-02 | 武汉理工大学 | Deep water DIC test system based on flexible watertight |
| CN116202440B (en) * | 2023-02-08 | 2023-11-14 | 武汉理工大学 | Deep water DIC test system based on flexible watertight |
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