High-pressure-difference submarine cable cabin-penetrating sealing structure for testing wet-type electric connector

Abstract

The utility model discloses a high-pressure-difference submarine cable cabin-penetrating sealing structure for testing a wet-type electric connector, which belongs to the technical field of submarine cable cabin-penetrating sealing and comprises a pressure vessel cabin wall, a cabin wall flange is arranged in the pressure vessel cabin wall, a screw is arranged on the surface of the cabin wall flange, a submarine cable body is arranged in the cabin wall flange, and the submarine cable body is connected with the cabin wall flange. V-group compression nuts are arranged at the two ends of the bulkhead flange, a V-group pressure pad is arranged in the bulkhead flange corresponding to the submarine cable body, and a V-group support ring is arranged on one side of the V-group pressure pad; according to the utility model, the V-group pressure pads, the V-group support rings, the V-shaped seals and the V-group pressure rings are tightly attached to the submarine cable, so that high-pressure-difference sealing is realized, the combination direction of the V-group seals can be determined according to the water pressure direction, and the high pressure difference is realized by adjusting the number of single V-shaped seals through different pressure differences; the problem of unsafe factors in the test of the cabin-penetrating sealing structure which cannot bear high pressure difference in the prior art is solved, and the test operation risk is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of submarine cable through-hull sealing, and particularly relates to a high-pressure-difference submarine cable through-hull sealing structure for wet electrical connector testing. Background Art

[0002] Underwater wet electrical connectors cannot be used alone under submarine conditions. In order to provide customers with a complete wire harness composed of connectors and submarine cables, the complete wire harness usually needs to be subjected to an overall hydrostatic pressure test or a mixing water tank test. Therefore, when the submarine cable penetrates the pressure vessel bulkhead, it is necessary to seal at the place where the submarine cable penetrates the deck or bulkhead to ensure the test requirements of the complete wire harness composed of the connector and the submarine cable.

[0003] At present, there are many types of submarine cable through-hull sealing structures, but they are generally used in shallow water areas. For example, the cable through-hull sealing in the shipbuilding industry only plays a role in preventing water ingress. If this structure is used for the test of the complete wire harness composed of the connector and the submarine cable, it is simply impossible to achieve. In the deep sea area, as the water depth increases, the water pressure borne gradually increases. When the through-hull sealing structure exceeds a certain pressure difference limit, the sealing will fail, and there are safety risks during the test process.

[0004] In summary, the submarine cable through-hull sealing structure adopted in the prior art cannot withstand a high pressure difference. The existing sealing and structure are not very suitable for the equipment test in the deep sea area, and they are not detachable and reusable, resulting in poor economy. Content of the Utility Model

[0005] In order to solve the problems raised in the above background art, the utility model provides a high-pressure-difference submarine cable through-hull sealing structure for wet electrical connector testing, which has the characteristics of reducing the test operation risk, being detachable and reusable, and saving the test cost.

[0006] To achieve the above object, the utility model provides the following technical solution: A high-pressure-difference submarine cable through-hull sealing structure for wet electrical connector testing, including a pressure vessel bulkhead. Inside the pressure vessel bulkhead, there is a bulkhead flange. On the surface of the bulkhead flange, there are screws. Inside the bulkhead flange, there is a submarine cable body. At both ends of the bulkhead flange, there are V-group compression nuts. Inside the bulkhead flange, corresponding to the submarine cable body, there are V-group gaskets. On one side of the V-group gaskets, there are V-group support rings. On one side of the V-group support rings, there is a V-shaped seal. On one side of the V-shaped seal, there are V-group pressure rings.

[0007] Preferably, there are two sealing cavities inside the bulkhead flange corresponding to the V-group gaskets, V-group support rings, V-shaped seal and V-group pressure rings. One end of the V-group compression nuts abuts against the surface of the V-group gaskets.

[0008] Preferably, there is an O-ring III on one side surface of the pressure vessel bulkhead corresponding to the bulkhead flange.

[0009] Preferably, two sets of sealing guide grooves are arranged inside the bulkhead flange, and an O-ring IV is arranged inside the sealing guide grooves.

[0010] Preferably, an O-ring I is arranged inside the pressure vessel bulkhead corresponding to the bulkhead flange, and an O-ring II is arranged on one side of the O-ring I.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] The present utility model tightly fits the submarine cable through the arrangement of V groups of pressing pads, V groups of supporting rings, V-shaped seals and V groups of pressing rings to achieve high-pressure difference sealing, and the V-group sealing combination direction can be determined according to the water pressure direction, and the high-pressure difference is achieved by adjusting the number of single V-shaped seals according to different pressure differences, solving the unsafe factors in the test of the through-bulkhead sealing structure that cannot withstand high-pressure differences in the prior art, reducing the test operation risk, and there is no glue filling and vulcanization process in the whole assembly process, so it can be disassembled and reused, saving the test cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the front view of the structure of the present utility model;

[0014] Figure 2 is the top view of the structure of the present utility model;

[0015] Figure 3 is the sectional view of the structure of the present utility model;

[0016] Figure 4 is the partial sectional view of the structure of the present utility model.

[0017] In the figure: 1, submarine cable body; 2, V-group compression nut; 3, pressure vessel bulkhead; 4, screw; 5, bulkhead flange; 6, V-group pressing pad; 7, V-group supporting ring; 8, V-shaped seal; 9, V-group pressing ring; 10, O-ring I; 11, O-ring II; 12, O-ring III; 13, O-ring IV. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1-4, the present utility model provides the following technical solutions: A high-pressure differential submarine cable through-hull sealing structure for wet electrical connector testing, including a pressure vessel bulkhead 3. Inside the pressure vessel bulkhead 3, there is a bulkhead flange 5. On the surface of the bulkhead flange 5, there are screws 4. Inside the bulkhead flange 5, there is a submarine cable body 1. At both ends of the bulkhead flange 5, there are V-group compression nuts 2. Inside the bulkhead flange 5, corresponding to the submarine cable body 1, there are V-group gaskets 6. On one side of the V-group gaskets 6, there are V-group support rings 7. On one side of the V-group support rings 7, there is a V-shaped seal 8. On one side of the V-shaped seal 8, there are V-group pressure rings 9.

[0020] Specifically, inside the bulkhead flange 5, there are two sets of sealed cavities corresponding to the V-group gaskets 6, V-group support rings 7, V-shaped seal 8, and V-group pressure rings 9. One end of the V-group compression nuts 2 abuts against the surface of the V-group gaskets 6.

[0021] By adopting the above technical solution, use a wrench to screw the V-group compression nuts 2 to shorten the volume of the sealed cavity of the bulkhead flange 5 so that the V-group gaskets 6 fully squeeze the V-group support rings 7, V-shaped seal 8, and V-group pressure rings 9.

[0022] Specifically, on one side surface of the pressure vessel bulkhead 3, corresponding to the bulkhead flange 5, there is an O-ring III 12.

[0023] By adopting the above technical solution, it ensures the stability and sealing performance of the installation of the bulkhead flange 5, improves the use effect of the equipment, and plays a role in hydrostatic pressure sealing under high pressure differences.

[0024] Specifically, inside the bulkhead flange 5, there are two sets of sealed guide grooves, and inside the sealed guide grooves, there is an O-ring IV 13.

[0025] By adopting the above technical solution, it ensures that two static seals are formed between the O-ring IV 13 and the submarine cable body 1 after the installation of the O-ring IV 13, which is used to buffer the failure of one set of the V-group seal combination under high pressure differences.

[0026] Specifically, inside the pressure vessel bulkhead 3, corresponding to the bulkhead flange 5, there is an O-ring I 10, and on one side of the O-ring I 10, there is an O-ring II 11.

[0027] By adopting the above technical solution, during normal test work, the outside of the pressure vessel bulkhead 3 is the ambient pressure, and the inside is the test pressure corresponding to the water depth, which ensures the stability of the test work.

[0028] Working principle and usage process of the present utility model: When the present utility model is in use, the pressure vessel bulkhead 3 needs to be correctly installed on the pressure vessel during normal testing. The lower part is the side of the pressure vessel, and the upper part is the normal environment. The high-pressure differential submarine cable sealing structure for wet connector testing is fixed on the pressure vessel bulkhead 3 by screws 4. The submarine cable body 1 is fixed inside the bulkhead flange 5. By using a wrench to screw the V-group compression nut 2, during the tightening process, the V-group pressure pad 6 is pushed to squeeze the V-shaped seal 8, so that the V-group pressure pad 6, the V-group support ring 7, the V-shaped seal 8, and the V-group pressure ring 9 are sealed with the submarine cable body 1;

[0029] When assembling the high-pressure differential submarine cable sealing structure for wet connector testing, first ensure that the complete wire harness composed of the connector to be tested and one end of the submarine cable body 1 is correctly assembled. Then, the other end passes through the sealing groove position of the bulkhead flange 5 where two O-rings 13 have been installed. Determine the installation directions of the V-group pressure pad 6, the V-group support ring 7, the V-shaped seal 8, and the V-group pressure ring 9 according to the hydrostatic pressure direction, and install them into the sealing chamber of the bulkhead flange 5 in sequence;

[0030] For the installation on the pressure cabin side, first install the V-group support ring 7, install the V-shaped seals 8 in sequence according to the hydrostatic pressure, and finally install the V-group pressure ring 9. After installing the V-group pressure pad 6, screw in the V-group compression nut 2 to completely clamp the submarine cable by the V-group seal combination, realizing high-pressure differential sealing;

[0031] For the installation on the normal environment side, first install the V-group pressure ring 9, install the V-shaped seals 8 in sequence according to the hydrostatic pressure, and finally install the V-group support ring 7. After installing the V-group pressure pad 6, screw in the V-group compression nut 2 to completely clamp the submarine cable by the V-group seal combination, realizing high-pressure differential sealing. There is no glue injection and vulcanization process in the whole assembly process, so it can be disassembled and reused;

[0032] Principle of the V-group seal combination: In the free state, the V-group seal lips have a "self-sealing" effect. The outer diameter of the lip of the V-shaped seal 8 is larger than the inner diameter of the sealing chamber of the bulkhead flange 5, and the inner diameter of the lip is smaller than the outer diameter of the submarine cable. In this way, there will be a certain deformation after assembly. Due to the action of the V-group support ring 7, this deformation only occurs at the tip of the lip. When the medium working pressure acts, the pressure causes the contact shape of the V-group seal lips to change and increases the contact stress, making the lips contact the sealing chamber of the bulkhead flange 5 and the submarine cable body 1 more closely, and it is more difficult for the medium to pass through. Even if the medium passes through the lips of the first V-shaped ring, the pressure decreases. When passing through the second V-shaped ring, the pressure will be weakened again until the weakening stops, and the final leakage is also prevented. The role of the V-group pressure ring 9 is to create an initial compression amount for the V-shaped seal 8, so that it is in full contact with the sealed surface, and the compression amount of the V-shaped sealing ring can be adjusted.

[0033] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-voltage differential submarine cable cabin sealing structure for testing wet electrical connectors, comprising a pressure vessel bulkhead, characterized in that: A bulkhead flange is arranged inside the bulkhead of the pressure vessel, screws are arranged on the surface of the bulkhead flange, a submarine cable body is arranged inside the bulkhead flange, V-group compression nuts are arranged at both ends of the bulkhead flange, a V-group pressure pad is arranged inside the bulkhead flange corresponding to the submarine cable body, a V-group support ring is arranged on one side of the V-group pressure pad, a V-shaped seal is arranged on one side of the V-shaped support ring, and a V-group pressure ring is arranged on one side of the V-shaped seal.

2. A high-voltage differential submarine cable cabin sealing structure for testing wet electrical connectors according to claim 1, characterized in that: Two sets of sealing inner cavities are arranged inside the bulkhead flange corresponding to the V-group pressure pad, the V-group support ring, the V-shaped seal and the V-group pressure ring, and one end of the V-group compression nut abuts against the surface of the V-group pressure pad.

3. A high-voltage differential submarine cable cabin sealing structure for testing wet electrical connectors according to claim 1, characterized in that: An O-ring three is arranged on one side surface of the bulkhead of the pressure vessel corresponding to the bulkhead flange.

4. A high-voltage differential submarine cable cabin sealing structure for testing wet electrical connectors according to claim 1, characterized in that: Two sets of sealing guide grooves are arranged inside the bulkhead flange, and four O-rings are arranged inside the sealing guide grooves.

5. The high-voltage differential submarine cable cabin penetration sealing structure for wet electrical connector testing according to claim 1, characterized in that: An O-ring 1 is arranged inside the bulkhead of the pressure vessel corresponding to the bulkhead flange, and an O-ring 2 is arranged on one side of the O-ring 1.

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