CN216699465U

CN216699465U - Cable sealing device suitable for deep water

Info

Publication number: CN216699465U
Application number: CN202220214836.1U
Authority: CN
Inventors: 姜文立; 李广济; 刘乐超
Original assignee: DALIAN HONGZE PUMPS Ltd
Current assignee: DALIAN HONGZE PUMPS Ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-06-07
Anticipated expiration: 2032-01-26

Abstract

The utility model relates to the technical field of deepwater cable sealing, and provides a cable sealing device suitable for deepwater, which comprises: the sealing device comprises a gland, a sealing ring sleeve and a sealing body; the sealing ring sleeve is welded on the outer side wall of the sealing box, which is opposite to the lead hole, and the lead hole is used for allowing a cable to pass through; a sealing body is arranged between the sealing ring sleeve and the cable; the sealing body is provided with a gland, and the gland is tightly pressed on the sealing body; the seal body, including: the upper pressure ring, the lower pressure ring and a plurality of V-shaped sealing rings are arranged in sequence; the lower pressure ring is arranged above the seal box, and the plurality of V-shaped seal rings are sequentially arranged above the lower pressure ring; the upper pressure ring is arranged above the V-shaped sealing ring and below the gland. The utility model adopts the sealing ring sleeve, the multiple V-shaped sealing ring and the pressure ring structure, and realizes the long-term and firm sealing of the cable in deep water after being led out from the sealing body.

Description

Cable sealing device suitable for deep water

Technical Field

The utility model relates to the technical field of deepwater cable sealing, in particular to a cable sealing device suitable for deepwater.

Background

When the electromechanical equipment works underwater, how to lead out the power cable and the communication cable from the water surface is the key for ensuring the long-term and safe work of the equipment, and the cable leading-out hole is sealed, particularly the problem needing to be solved in deep water (less than or equal to 70 m). The water pressure of the sealed cabin during working in deep water is very high, power supply and operation are needed from the outside when equipment in the cabin works and controls the equipment, and the sealing problem of a power cable, a control cable and the like is very important. Because the sealed cabin has the pressure differential with the external world in the under water work cabin, cable seal department often can the seepage, leads to the under-deck to intake, and a small amount of water seepage can be through monitoring, and the control drain pump in time discharges, when leaking when great, can bring harmful effects for the normal work of sealed cabin interior equipment, probably cause the work accident even.

At present, under the common condition of cable sealing in deep water, the cable inlet is sealed at one time, and a sealing gasket, a sealant and the like are added between a sealing connecting piece and a sealing body for improving the sealing effect. The structure is more flexible in arrangement and connection of various rubber multi-core power cables and signal transmission cables, has stronger adaptability, but is easy to leak and have accidents when used in places with higher deepwater pressure. Although the sealing effect of the sealing glue sealing mode is stronger than that of the sealing ring in a pressing and sealing mode, the mounting and dismounting operations are complex, the sealing is required to be performed again after each maintenance, the sealing glue sealing mode is troublesome, and the defects are more; in addition, due to the fact that components in water are different, the problems of aging of a sealing gasket, failure of the sealing gasket and the like can be caused, and hidden dangers are brought to long-time safe work of the sealed cabin.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problems that sealing rings are easy to leak under the condition of large water pressure in a deep water area and have an insignificant sealing effect, and cables and a junction box are fixed together after being sealed by glue, cannot be disassembled, are inconvenient to maintain and the like in sealing structures which are generally used for leading out cables from sealing bodies in the prior art and have sealing ring pressing sealing, glue sealing and the like.

The utility model provides a cable sealing device suitable for deep water, which comprises: the sealing device comprises a gland, a sealing ring sleeve and a sealing body;

the sealing ring sleeve is welded on the outer side wall of the sealing box and is opposite to the lead hole, and the lead hole is used for allowing a cable to pass through; a sealing body is arranged between the sealing ring sleeve and the cable;

the sealing body is provided with a gland, and the gland is tightly pressed on the sealing body;

the seal body, including: the upper pressure ring, the lower pressure ring and a plurality of V-shaped sealing rings are arranged in sequence; the lower pressure ring is arranged above the seal box, and the plurality of V-shaped seal rings are sequentially arranged above the lower pressure ring; the upper pressure ring is arranged above the V-shaped sealing ring and below the gland.

Preferably, threaded blind holes are uniformly distributed in the circumferential direction of the sealing ring sleeve.

Preferably, the gland is provided with a unthreaded hole ring which is matched with the sealing ring sleeve and can enable the cable to pass through.

Preferably, the gland sleeve is sleeved on the stud and is screwed down through a compression nut.

Preferably, the pressing cover is provided with an annular protruding end, and the protruding end presses on the pressing ring.

Preferably, the lower pressing ring is provided with a V-shaped ring groove, and the upper pressing ring is provided with a convex ring.

Preferably, the V-shaped sealing ring is made of fluororubber.

The cable sealing device suitable for deep water provided by the utility model adopts a sealing ring sleeve, a plurality of V-shaped sealing rings and a pressure ring structure, the cable sealing device is sealed outside a lead hole of a sealed cabin, and the V-shaped sealing rings are embedded into the sealing rings and have a self-sealing function in a free state; the pressing force of the compression nut is adjusted, the V-shaped lip is deformed by the pressure of the compression ring on the V-shaped sealing ring, the contact state is changed, and the contact force between the lip and the cable and the sleeve of the sealing ring is increased, so that the effect of sealing is achieved, the sealing effect is better, the leakage phenomenon is eliminated, the long-term sealing effect of the cable in deep water is achieved, and the equipment is safer. The sealing structure can be repeatedly used, and the maintenance cost is lower.

Drawings

Fig. 1 is a schematic structural diagram of a cable sealing device suitable for deep water use provided by the utility model;

fig. 2 is an enlarged schematic view at a in fig. 1.

Reference numerals: 1. a cable; 2. a gland; 3. a compression nut; 4. a stud; 5. sealing the ring sleeve; 6. a sealing box; 7. pressing a ring; 8. a V-shaped sealing ring; 9. and (7) pressing the ring downwards.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.

As shown in fig. 1-2, an embodiment of the present invention provides a cable sealing device suitable for deep water use, including: gland 2, seal ring cover 5 and seal.

The sealing ring sleeve 5 is welded on the outer side wall of the sealing box 6 and is opposite to the lead hole, and the lead hole is used for enabling the cable 1 to pass through; and a sealing body is arranged between the sealing ring sleeve 5 and the cable 1. Threaded blind holes are uniformly distributed in the circumferential direction of the sealing ring sleeve 5, so that the sealing ring sleeve 5 can be conveniently welded.

The sealing body is provided with a gland 2, and the gland 2 is tightly pressed on the sealing body through a stud 4 and a compression nut 3; the gland 2 is provided with a unthreaded hole ring which is matched with the sealing ring sleeve 5 and can enable a cable to pass through. The gland 2 has an annular protruding end which presses on an upper press ring 7 of the sealing body. The gland 2 is sleeved on the stud 4 and screwed down through the compression nut 3, and specifically, the stud 4 and the compression nut 3 are screwed on the sealing ring sleeve 5 to compress the sealing body. And adjusting the compression nut 3 to control the pressing force of the gland 2 on the plurality of V-shaped sealing rings 8.

The seal body, including: the device comprises an upper pressing ring 7, a lower pressing ring 9 and a plurality of V-shaped sealing rings 8 which are arranged in sequence; the lower pressure ring 9 is arranged above the seal box 6, and the plurality of V-shaped seal rings 8 are sequentially arranged above the lower pressure ring 9; the upper pressing ring 7 is arranged above the V-shaped sealing ring 8 and below the gland 2. In this embodiment, the number of the V-shaped seal rings 8 may be increased or decreased according to the water pressure. In addition, lower clamping ring 9 has V type annular, go up clamping ring 7 and have protruding type ring, can closely cooperate with V type sealing washer 8.

The cable 1 sequentially penetrates through the gland 2, the upper pressing ring 7, the plurality of V-shaped sealing rings 8 and the lower pressing ring 9 from the outer side of the sealing box 6 and enters the sealing box 6 through the sealing ring sleeve 5. The length of the cable 1 entering the sealing box 6 and the length of the cable 1 outside the sealing box 6 are determined according to requirements, and a joint is not arranged in the middle in general.

The V-shaped sealing ring 8 is made of fluororubber, the size, the aperture and the number of the V-shaped sealing ring 8 can be selected according to the use pressure, and the pressing force of the V-shaped sealing ring 8 can be adjusted through the compression nut 3; the V-shaped sealing ring 8 is respectively provided with a pressing ring at the upper part and the lower part, and the lower pressing ring 9 is provided with a V-shaped ring groove with an included angle larger than that of the V-shaped sealing ring 8; the upper press ring 7 is provided with a convex circular ring matched with the lower press ring 9. The outer side of a lead hole of the sealed cabin is sealed, and a V-shaped sealing ring 8 is embedded into the sealing ring sleeve 5 in a free state to have a self-sealing function; the pressing force of the pressing nut 3 is adjusted, the V-shaped lip is deformed by pressing the V-shaped sealing ring 8 through the pressing ring, the contact state is changed, and the contact force between the lip and the cable 1 and the contact force between the lip and the sealing ring sleeve 5 are increased, so that the sealing effect is achieved. The multiple V-shaped sealing ring 8 has the advantages of better sealing effect and safer equipment due to the structural design.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some or all technical features may be made without departing from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cable sealing device adapted for deep water use, comprising: the sealing device comprises a gland (2), a sealing ring sleeve (5) and a sealing body;

the sealing ring sleeve (5) is welded on the outer side wall of the sealing box (6) and is opposite to the lead hole, and the lead hole is used for enabling the cable (1) to penetrate through; a sealing body is arranged between the sealing ring sleeve (5) and the cable (1);

the sealing body is provided with a gland (2), and the gland (2) is tightly pressed on the sealing body;

the seal body, including: the device comprises an upper pressure ring (7), a lower pressure ring (9) and a plurality of V-shaped sealing rings (8) which are arranged in sequence; the lower pressing ring (9) is arranged above the sealing box (6), and the plurality of V-shaped sealing rings (8) are sequentially arranged above the lower pressing ring (9); the upper pressing ring (7) is arranged above the V-shaped sealing ring (8) and below the gland (2).

2. The cable sealing device for deep water use according to claim 1, wherein the sealing collar (5) has threaded blind holes distributed all around the circumference.

3. The cable sealing device for deep water use according to claim 1, wherein the gland (2) is provided with a plain ring which cooperates with the sealing ring sleeve (5) and enables the passage of cables.

4. The cable sealing device for deep water use according to claim 1, wherein the gland (2) is fitted over the stud (4) and tightened by means of a compression nut (3).

5. Cable sealing device suitable for deep water use according to claim 4, wherein the gland (2) has an annular protruding end which presses on the upper pressure ring (7).

6. The cable sealing device for deep water use according to claim 1, wherein the lower pressure ring (9) has a V-shaped ring groove and the upper pressure ring (7) has a convex circular ring.

7. A cable sealing device adapted for deep water use according to claim 1 or 6, wherein the V-shaped sealing ring (8) is made of a fluoro-rubber material.