CN110729694B - Device and method for sealing end part of cable outer sheath - Google Patents
Device and method for sealing end part of cable outer sheath Download PDFInfo
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- CN110729694B CN110729694B CN201911000009.1A CN201911000009A CN110729694B CN 110729694 B CN110729694 B CN 110729694B CN 201911000009 A CN201911000009 A CN 201911000009A CN 110729694 B CN110729694 B CN 110729694B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/013—Sealing means for cable inlets
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Abstract
The invention belongs to the technical field of cable outer sheath end sealing devices, and particularly relates to a device for sealing the end of a cable outer sheath, which comprises: a sealing core (4) and a sealing pressing sleeve (5); the seal core (4) comprises: a sealing core connecting seat (4-11) and a sealing core sealing section (4-12); the sealing core sealing section (4-12) is fixedly connected on the sealing core connecting seat (4-11) and is integrally formed with the sealing core connecting seat; the sealing pressing sleeve (5) is of a hollow structure, the sealing core (4) is sleeved on the cable core (3), the sealing core sealing section (4-12) is located in the end portion of the cable outer sheath (2), and the sealing pressing sleeve (5) penetrates through the cable core (3), is sleeved on the outer side of the end portion of the cable outer sheath and is fixedly connected with the sealing core. The device is a sealing connection device for sealing the end part of the non-polar cable outer sheath, solves the problem of the reliability of the connection and the sealing of the end part of the non-polar cable outer sheath, and enables the cable to be used in deep sea for a long time.
Description
Technical Field
The invention belongs to the technical field of cable outer sheath end sealing equipment, particularly relates to a device and a method for sealing an end of a cable outer sheath, and particularly relates to a sealing device for sealing an end of an HDPE nonpolar outer sheath cable in deep sea.
Background
The outer sheath of the optical cable or the electric cable is distinguished by polarity and non-polarity, the end part of the optical cable or the electric cable can be sealed by the outer sheath made of polar materials through methods such as vulcanization, encapsulation or filling of glue, but the end part of the electric cable or the optical cable sheath cannot be sealed by the conventional method for the outer sheath made of non-polar materials, particularly the optical cable or the electric cable used in deep sea for a long time.
The center of steel wire armor cable is the mixed cable of photoelectricity, and the sheath because of the mixed cable of photoelectricity is HDPE, is nonpolar material, when using in the sea water of great depth, can't seal reliably through conventional vulcanization embedment mode or stuffing box mode.
Disclosure of Invention
The invention aims to solve the defects of the conventional sealing device, and provides a device for sealing the end part of an outer sheath of a cable, which is a sealing and connecting device for sealing the end part of the outer sheath of a nonpolar cable, so that the reliability of the connection and sealing of the end part of the nonpolar cable is improved, and the cable can be used in deep sea for a long time.
In order to achieve the above object, the present invention also provides a device for end sealing of an outer sheath of a cable, the device comprising: the sealing core and the sealing pressing sleeve;
the seal core includes: the sealing core connecting seat and the sealing core sealing section; the sealing core sealing section is fixedly connected on the sealing core connecting seat, and the sealing core connecting seat are integrally formed;
the sealing pressing sleeve is of a hollow structure, the sealing core is sleeved on the cable core, the sealing section of the sealing core is positioned in the end part of the cable outer sheath, and the sealing pressing sleeve penetrates through the cable core, is sleeved on the outer side of the end part of the cable outer sheath and is fixedly connected with the sealing core.
As one improvement of the technical scheme, the sealing core connecting seat and the sealing core sealing section are both of a hollow structure, and the middle parts of the sealing core connecting seat and the sealing core sealing section are provided with through holes for penetrating through cable cores.
As one improvement of the technical scheme, the sealing core connecting seat is provided with a sealing groove and an O-shaped sealing ring groove.
As an improvement of the above technical solution, the sealing core sealing section is of a hollow cylindrical structure, and the outer wall of the sealing core sealing section is sequentially provided with a first cylindrical section, a first circular ring protrusion, a first conical section, a second cylindrical section, a second conical section, a third cylindrical section, a second circular ring protrusion, and a fourth cylindrical section from top to bottom, and the sections form an irregular surface wrapped on the outer circumference of the sealing core sealing section.
As one improvement of the technical scheme, the sealing press sleeve is of a horn-shaped hollow structure, openings are formed in two ends of the structure, and the opening in one end is smaller than the opening in the other end; .
As one improvement of the technical scheme, a fifth cylindrical section, a third conical section, a sixth cylindrical section, a fourth conical section, a seventh cylindrical section and an eighth cylindrical section are sequentially added on the inner wall of the sealing pressing sleeve from top to bottom, and the sections form an irregular surface and are wrapped on the inner wall of the sealing sleeve;
the fifth cylindrical section, the third cylindrical section, the sixth cylindrical section, the fourth cylindrical section, the seventh cylindrical section and the eighth cylindrical section which are arranged on the inner wall of the sealing pressing sleeve respectively correspond to the first cylindrical section, the first conical section, the second cylindrical section, the second conical section, the third cylindrical section and the fourth cylindrical section which are arranged on the outer wall of the sealing core sealing section in a one-to-one mode.
As an improvement of the above technical solution, a gap between the sealing core and the sealing pressing sleeve is smaller than the thickness of the cable outer sheath, and the thickness of each conical annular gap formed by the sealing pressing sleeve and the sealing core is smaller than the thickness of each cylindrical annular gap.
Based on the sealing device, the invention also provides a method for sealing the end part of the outer sheath of the cable, which comprises the following steps:
step 1) stripping partial length of the cable outer sheath of the cable to enable the end parts of the cable outer sheath to be flush and consistent, so that the cable outer sheath cannot be overlong;
step 2) cleaning oil stains on the surface to be sealed at the end part of the cable outer sheath in the step 1), and avoiding the surface of the cable outer sheath from containing sharp particles, hair, silk and other sundries;
step 3) penetrating the sealing press sleeve to the outer sheath of the cable, wherein the end with the larger opening faces the end part of the outer sheath of the cable;
step 4), sleeving the sealing core on the cable core, wherein the sealing section of the sealing core is close to the end part of the outer sheath of the cable;
step 5) heating the sealing core, the sealing pressing sleeve and the cable close to the end part of the cable outer sheath by using a heating device to ensure that the heating temperature of the sealing core, the sealing pressing sleeve and the cable is uniform and reaches 120 +/-5 ℃;
step 6) uniformly coating a layer of high-temperature-resistant sealing silicone grease on the surface of the sealing section of the sealing core to fix the cable at the end part of the cable outer sheath, forcibly extruding the sealing core along the end part direction of the cable outer sheath to open the end part of the cable outer sheath, and then completely extruding the sealing core into the cable outer sheath to enable the cable outer sheath to wrap the sealing section of the sealing core and enable the end part of the cable outer sheath to be positioned in the sealing groove on the sealing connecting seat;
step 7), naturally cooling the sealing core connected with the cable to 80 ℃, and preserving heat for 0.5 hour;
step 8) pushing the sealing pressing sleeve to the end part of the cable outer sheath, and fixing the sealing pressing sleeve and the sealing core together;
and 9) naturally cooling the sealing core and the sealing pressing sleeve which are connected with the cable to the normal temperature to finish sealing.
Compared with the prior art, the invention has the beneficial effects that:
the sealing device solves the problem that the end part of the conventional nonpolar outer cable sheath cannot be connected and sealed in deep sea, is simple to operate and high in reliability, can conveniently and quickly seal the nonpolar outer cable sheath, and can play a good sealing role for a long time.
Drawings
FIG. 1 is a schematic view of the construction of a device for end sealing of an outer sheath of a cable according to the invention;
fig. 2 is an enlarged partial view of the sealing core of the device for sealing the end of the outer sheath of a cable of fig. 1.
Reference numerals:
1. cable 2, cable oversheath
3. Cable core 4 and sealing core
5. Sealing press sleeve 6 and conical gap
7. Cylindrical gap
4-1, round angle 4-2, first cylinder section
4-3, a first conical section 4-4 and a second cylindrical section
4-5, a second conical section 4-6 and a third cylindrical section
4-7, a first circular ring bulge 4-8 and a second circular ring bulge
4-9 parts of sealing groove 4-10 parts of O-shaped ring sealing groove
4-11 parts of sealing core connecting seat and 4-12 parts of sealing core sealing section
4-13, fourth cylindrical section
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1, the present invention also provides a device for end sealing of an outer sheath of a cable, the device comprising: a sealing core 4 and a sealing pressing sleeve 5;
the seal core 4 includes: 4-11 parts of a sealing core connecting seat and 4-12 parts of a sealing core sealing section; the sealing core sealing section 4-12 is fixedly connected on the sealing core connecting seat 4-11, and the sealing core connecting seat are integrally formed to form an integral structure;
the sealing pressing sleeve 5 is of a hollow structure, the sealing core 4 is sleeved on the cable core 3, the sealing core sealing section 4-12 is positioned in the end part of the cable outer sheath 2, and the sealing pressing sleeve 5 penetrates through the cable core 3, is sleeved on the outer side of the end part of the cable outer sheath and is fixedly connected with the sealing core so as to seal the end part of the cable outer sheath.
The sealing core connecting seat 4-11 and the sealing core sealing section 4-12 are both of hollow structures, and the middle parts of the sealing core connecting seat and the sealing core sealing section are provided with through holes for penetrating through the cable core 3.
And the sealing core connecting seat 4-11 is provided with a sealing groove 4-9 and an O-shaped sealing ring groove 4-10. In this embodiment, the sealing core connecting seat 4-11 is a rectangular structure, and the sealing groove 4-9 and the O-ring groove 4-10 are both circular grooves. As shown in fig. 1, in the present embodiment, the seal core connecting seat 4-11 and the seal pressing sleeve 5 are fixedly connected by a fixing bolt.
The sealing core sealing section 4-12 is a hollow cylindrical structure, the outer wall of the sealing core sealing section 4-12 is sequentially provided with a first cylindrical section 4-2, a first cylindrical bulge 4-7, a first conical section 4-3, a second cylindrical section 4-4, a second conical section 4-5, a third cylindrical section 4-6, a first annular bulge 4-8 and a fourth cylindrical section 4-13 from top to bottom, each section forms an irregular surface to be wrapped on the outer circumference of the sealing core sealing section 4-12 and is used for being completely attached to, matched and in sealing sleeve joint with the inner side of the outer sheath of the cable with a part of length stripped in advance, each section forms an irregular surface, and the structure is arranged to ensure that the cable outer sheath 2 is tightly matched between each cylindrical gap and each conical gap and increase the matching surface, achieving the effect of high-pressure sealing. Wherein the protruding part of the first circular ring is larger than the protruding part of the first cylindrical protrusion.
As shown in fig. 1, the sealing sleeve 5 is a horn-shaped hollow structure, and the left and right ends of the structure are both provided with openings, wherein the opening at the left end is smaller than the opening at the right end; the bottom of the structure extends outwards respectively to form two extension sections, threaded holes are arranged on the extension sections respectively, correspond to the grooves 4-10 of the O-shaped sealing rings on the sealing core connecting seats 4-11 and are fixedly connected together through fixing bolts.
And the inner wall of the sealing pressing sleeve is sequentially provided with a fifth cylindrical section, a third conical section, a sixth cylindrical section, a fourth conical section, a seventh cylindrical section and an eighth cylindrical section from top to bottom, and the sections form an irregular surface which is wrapped on the inner wall of the sealing sleeve 5 and used for being completely attached to, matched with and hermetically sleeved on the outer side of the outer sheath 2 of the cable with a part of length stripped in advance.
The fifth cylindrical section, the third cylindrical section, the sixth cylindrical section, the fourth cylindrical section, the seventh cylindrical section and the eighth cylindrical section which are arranged on the inner wall of the sealing pressing sleeve 5 respectively correspond to the first cylindrical section 4-2, the first cylindrical section 4-3, the second cylindrical section 4-4, the second cylindrical section 4-5, the third cylindrical section 4-6 and the fourth cylindrical section 4-13 which are arranged on the outer wall of the sealing core sealing section 4-12 in a one-to-one mode. The first cylindrical section 4-2 and the fifth cylindrical section, the second cylindrical section 4-4 and the sixth cylindrical section, the third cylindrical section 4-6 and the seventh cylindrical section, and the fourth cylindrical section 4-13 and the eighth cylindrical section are in one-to-one correspondence, and respective cylindrical gaps are formed; the first conical section 4-3 and the third conical section, and the second conical section 4-5 and the fourth conical section are in one-to-one correspondence, and form respective conical gaps.
The thickness of the gap between the sealing core (4) and the sealing pressure sleeve (5) is smaller than that of the cable outer sheath (2), and the thickness of each conical annular gap formed by the sealing pressure sleeve (5) and the sealing core (4) is smaller than that of each cylindrical annular gap. The gap between the sealing core 4 and the sealing pressing sleeve 5 is smaller than or equal to the thickness of the outer sheath 2 of the cable 1, the thickness of the conical gap formed between the sealing pressing sleeve 5 and the sealing core 4 is smaller than the thickness of the cylindrical gap formed between the sealing pressing sleeve 5 and the sealing core 4, the purpose is to sleeve the cable outer sheath 2 of the cable 1 between the sealing pressing sleeve 5 and the sealing core 4, and the cable outer sheath (2) is tightly positioned in the gap through the matching of the sealing pressing sleeve (5) and the sealing core (4), so that the end part of the cable outer sheath is matched, installed and sealed through the sealing device, and the cable core (3) is positioned in the sealing structure.
As shown in fig. 2, a fillet R is arranged at the joint of the first cylindrical section 4-2 and the left end of the seal core seal section 4-12, namely the thickness of the first cylindrical section 4-2; the purpose is to guide the sealing core sealing section 4-12 to be smoothly extruded into the end part of the cable outer sheath 2.
Based on the sealing device, the invention also provides a method for sealing the end part of the cable outer sheath, in the method, the adopted cable outer sheath 2 is made of High Density Polyethylene (HDPE); the method comprises the following steps:
step 1), stripping partial length of a cable outer sheath (2) of the cable (1) to enable the end parts of the cable outer sheath (2) to be flush and consistent, so that the cable outer sheath (2) cannot be overlong;
step 2) cleaning oil stains on the surface to be sealed at the end part of the cable outer sheath (2) in the step 1), and avoiding that sharp particles, hair, silk and other sundries are on the surface of the cable outer sheath (2);
step 3), penetrating the sealing pressing sleeve (5) onto the cable outer sheath (2), wherein the end with the larger opening faces the end part of the cable outer sheath (2), so that the inner wall of the sealing pressing sleeve (5) is matched and connected with the outer side of the cable outer sheath (2) and is completely attached;
step 4), sleeving the sealing core (4) on the cable core (3), wherein the sealing core sealing section (4-12) is close to the end part of the cable outer sheath (2);
step 5), heating the sealing core (4), the sealing pressing sleeve (5) and the cable close to the end part of the cable outer sheath (2) by using a heating device to ensure that the heating temperature of the sealing core, the sealing pressing sleeve and the cable is uniform and reaches 120 +/-5 ℃;
step 6), uniformly coating a layer of high-temperature-resistant sealing silicone grease on the surface of the sealing core sealing section (4-12), fixing the cable at the end part of the cable outer sheath (2), forcibly extruding the sealing core (4) along the end part direction of the cable outer sheath (2) to open the end part of the cable outer sheath (2), and then completely extruding the sealing core (4) into the cable outer sheath to enable the cable outer sheath (2) to wrap the sealing core sealing section (4-12) and enable the end part of the cable outer sheath (2) to be positioned in a sealing groove (4-9) on the sealing connecting seat (4-11); the sealing core 4 is extruded into the cable outer sheath 2, so that a fifth cylindrical section, a third conical section, a sixth cylindrical section, a fourth conical section, a seventh cylindrical section and an eighth cylindrical section which are arranged on the inner wall of the sealing pressing sleeve 5 are correspondingly attached and sealed with a first cylindrical section 4-2, a first conical section 4-3, a second cylindrical section 4-4, a second conical section 4-5, a third cylindrical section 4-6 and a fourth cylindrical section 4-13 which are arranged on the outer wall of the sealing core sealing section 4-12 one by one, gaps between the cylindrical sections and the conical sections are filled, and complete sealing is achieved; the cable outer sheath 2 is sealed in a reinforcing way through the first cylindrical bulge 4-7 and the first circular ring bulge 4-8;
step 7), naturally cooling the sealing core (4) connected with the cable (1) to 80 ℃, and preserving heat for 0.5 hour;
step 8), pushing the sealing pressing sleeve (5) to the end part of the cable outer sheath (2), and fixing the sealing pressing sleeve (5) and the sealing core (4) together;
and 9) naturally cooling the sealing core (4) and the sealing pressing sleeve (5) which are connected with the cable (1) to normal temperature to complete sealing.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. A device for sealing the end of an outer sheath of a cable, the device comprising: a sealing core (4) and a sealing pressing sleeve (5);
the seal core (4) comprises: a sealing core connecting seat (4-11) and a sealing core sealing section (4-12); the sealing core sealing section (4-12) is fixedly connected on the sealing core connecting seat (4-11) and is integrally formed with the sealing core connecting seat;
the sealing pressing sleeve (5) is of a hollow structure, the sealing core (4) is sleeved on the cable core (3), the sealing core sealing section (4-12) is positioned in the end part of the cable outer sheath (2), and the sealing pressing sleeve (5) penetrates through the cable core (3), is sleeved on the outer side of the end part of the cable outer sheath and is fixedly connected with the sealing core;
the sealing core connecting seat (4-11) and the sealing core sealing section (4-12) are both of a hollow structure, and the middle parts of the sealing core connecting seat and the sealing core sealing section are provided with through holes for penetrating through the cable core (3);
the sealing core sealing section (4-12) is of a hollow cylindrical structure, the outer wall of the sealing core sealing section (4-12) is sequentially provided with a first cylindrical section (4-2), a first circular ring bulge (4-7), a first conical section (4-3), a second cylindrical section (4-4), a second conical section (4-5), a third cylindrical section (4-6), a second circular ring bulge (4-8) and a fourth cylindrical section (4-13) from top to bottom, and the sections form an irregular surface to be wrapped on the outer circumference of the sealing core sealing section (4-12).
2. Device for sealing the end of an outer sheath of a cable according to claim 1, characterized in that the sealing core attachment seat (4-11) is provided with sealing grooves (4-9) and O-ring grooves (4-10).
3. Device for sealing the end of an outer sheath of a cable according to claim 1, characterised in that the sealing sleeve (5) has a flared hollow structure with openings at both ends, the opening at one end being smaller than the opening at the other end.
4. The device for sealing the end of an outer sheath of a cable as claimed in claim 3, wherein the inner wall of the sealing gland is provided with a fifth cylindrical section, a third conical section, a sixth cylindrical section, a fourth conical section, a seventh cylindrical section and an eighth cylindrical section which are sequentially arranged from top to bottom, and the sections form an irregular surface and are wrapped on the inner wall of the sealing sleeve (5);
the fifth cylindrical section, the third cylindrical section, the sixth cylindrical section, the fourth cylindrical section, the seventh cylindrical section and the eighth cylindrical section which are arranged on the inner wall of the sealing pressing sleeve (5) respectively correspond to the first cylindrical section (4-2), the first cylindrical section (4-3), the second cylindrical section (4-4), the second cylindrical section (4-5), the third cylindrical section (4-6) and the fourth cylindrical section (4-13) which are arranged on the outer wall of the sealing core sealing section (4-12) one by one.
5. The device for end sealing of an outer sheath of a cable according to claim 4, characterised in that the sealing core (4) and the sealing gland (5) are coaxial, the gap between them being smaller than the thickness of the outer sheath of a cable (2), the thickness of each conical annular gap formed by the sealing gland (5) and the sealing core (4) being smaller than the thickness of each cylindrical annular gap.
6. A method for cable jacket end sealing, the method comprising:
step 1), stripping partial length of a cable outer sheath (2) of the cable (1) to enable the end parts of the cable outer sheath (2) to be flush and consistent;
step 2) cleaning surface sundries needing to be sealed at the end part of the cable outer sheath (2) in the step 1);
step 3), penetrating the sealing pressing sleeve (5) onto the cable outer sheath (2), wherein the end with the larger opening faces the end part of the cable outer sheath (2);
step 4), sleeving the sealing core (4) on the cable core (3), wherein the sealing core sealing section (4-12) is close to the end part of the cable outer sheath (2);
step 5), heating the sealing core (4), the sealing pressing sleeve (5) and the cable close to the end part of the cable outer sheath (2) by using a heating device to ensure that the heating temperature of the sealing core, the sealing pressing sleeve and the cable is uniform and reaches 120 +/-5 ℃;
step 6), uniformly coating a layer of high-temperature-resistant sealing silicone grease on the surface of the sealing core sealing section (4-12), fixing the cable at the end part of the cable outer sheath (2), forcibly extruding the sealing core (4) along the end part direction of the cable outer sheath (2) to open the end part of the cable outer sheath (2), and then completely extruding the sealing core (4) into the cable outer sheath to enable the cable outer sheath (2) to wrap the sealing core sealing section (4-12) and enable the end part of the cable outer sheath (2) to be positioned in a sealing groove (4-9) on the sealing connecting seat (4-11);
step 7), naturally cooling the sealing core (4) connected with the cable (1) to 80 ℃, and preserving heat for 0.5 hour;
step 8), pushing the sealing pressing sleeve (5) to the end part of the cable outer sheath (2), and fixing the sealing pressing sleeve (5) and the sealing core (4) together;
and 9) naturally cooling the sealing core (4) and the sealing pressing sleeve (5) which are connected with the cable (1) to normal temperature to complete sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911000009.1A CN110729694B (en) | 2019-10-21 | 2019-10-21 | Device and method for sealing end part of cable outer sheath |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911000009.1A CN110729694B (en) | 2019-10-21 | 2019-10-21 | Device and method for sealing end part of cable outer sheath |
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| CN110729694A CN110729694A (en) | 2020-01-24 |
| CN110729694B true CN110729694B (en) | 2020-10-23 |
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| CN201911000009.1A Active CN110729694B (en) | 2019-10-21 | 2019-10-21 | Device and method for sealing end part of cable outer sheath |
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| CN114823006B (en) * | 2022-03-02 | 2024-03-22 | 海洋石油工程股份有限公司 | Recovery tool for umbilical cable sealing device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5577926A (en) * | 1994-12-05 | 1996-11-26 | Texaco, Inc. | Pressure equalization adapter for subsea cable termination or junction box |
| CN103474942B (en) * | 2013-09-23 | 2016-01-06 | 苏州华旃航天电器有限公司 | A kind of HTHP hermetically-sealed cable assembly |
| US10439383B2 (en) * | 2016-12-21 | 2019-10-08 | Te Connectivity Corporation | Seal systems for oil-filled cable terminations and assemblies and methods including the same |
| CN109066567B (en) * | 2018-07-19 | 2020-02-18 | 武汉浩瀚机电设备有限公司 | Watertight connection method for vulcanization of tail cable |
| CN109842085A (en) * | 2019-03-22 | 2019-06-04 | 中国科学院声学研究所 | A kind of pressure balance type seabed master base station photoelectric separating apparatus |
| CN209516608U (en) * | 2019-04-09 | 2019-10-18 | 上海蓝科电气有限公司 | A kind of metallic double seals armored cable waterproof connector |
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