LU501469B1 - Vacuum pumping device for submarine cable sheath - Google Patents

Vacuum pumping device for submarine cable sheath Download PDF

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Publication number
LU501469B1
LU501469B1 LU501469A LU501469A LU501469B1 LU 501469 B1 LU501469 B1 LU 501469B1 LU 501469 A LU501469 A LU 501469A LU 501469 A LU501469 A LU 501469A LU 501469 B1 LU501469 B1 LU 501469B1
Authority
LU
Luxembourg
Prior art keywords
cotton block
pumping device
vacuum pumping
casing
submarine cable
Prior art date
Application number
LU501469A
Other languages
French (fr)
Inventor
Qinwei Wang
Original Assignee
Qinwei Wang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qinwei Wang filed Critical Qinwei Wang
Priority to LU501469A priority Critical patent/LU501469B1/en
Application granted granted Critical
Publication of LU501469B1 publication Critical patent/LU501469B1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/18—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using tubular layers or sheathings
    • B29C63/20—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using tubular layers or sheathings using pressure difference, e.g. vacuum
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/14—Submarine cables

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

This invention provides vacuum pumping device for submarine cable sheath that comprises casing, air duct, exhaust fan and control case, wherein, the casing closes the wire body inlet of the extruder and is provided with a plurality of sockets for the core wire to extend into the inner cavity of the casing and then enter the wire body inlet, one end of the air duct is communicated with the inner cavity of the casing body, the other end is installed at the exhaust port of the exhaust fan, the control case is electrically connected with the exhaust fan. This invention closes the wire inlet of the extruder by arranging casing with a plurality of insertion holes for the core wire to extend into the inner cavity of the casing and then enter the wire inlet, combined with the air duct to connect the exhaust fan, it can form a vacuum environment.

Description

Description 1501669 Vacuum pumping device for submarine cable sheath Technical field This invention relates to the technical field of cables, particularly relates to vacuum pumping device for submarine cable sheath.
Background Cables are cables used to transmit and distribute electric energy, which are often used in urban underground power grids, power station outgoing lines, internal power supply of industrial and mining enterprises and underwater power transmission lines across rivers and seas.
The sheath 8 is the outermost layer of the cable, and the production mode is usually shown in Figure 1, in which, a plurality of core wires 7 pass through the guide sleeve 64, the inner die core 65 and the die cover 67 of the extruder 6 in turn and move forward at a constant speed according to the speed specified by the process, the rubber material in the material sleeve 61 is driven by the screw 63 to flow along the gap between the outer shell 62, the outer mold core 66, the guide sleeve 64 and the inner mold core 65, and finally stretches, adheres and solidifies outside the core wire 7 to form the sheath 8.
However, the gap between the existing core wire 7 and the sheath 8 is large, and air is easily mixed in, thus leading to cable oxidation. In addition, in the actual use process, the cable is easy to be repeatedly bent, which further aggravates the peeling phenomenon between the core wire 7 and the sheath 8, and affects the normal use of the cable, especially in the submarine environment.
Summary
The purpose of the invention is to solve the problems in the prior art, and propose a 901469 vacuum pumping device for submarine cable sheath, which can effectively remove the air between the core wire and the sheath, greatly improve the connection tightness between the core wire and the sheath, and it is very suitable for the processing and use of submarine cables.
In order to achieve the purpose described above, this invention provides vacuum pumping device for submarine cable sheath, which comprises casing, air duct, exhaust fan and control case, the casing that closes the wire inlet of the extruder and is provided with a plurality of sockets for the core wire to extend into the inner cavity of the casing and then enter the wire inlet, one end of the air duct is communicated with the inner cavity of the casing and the other end is installed at the air outlet of the exhaust fan, the control case is electrically connected to the exhaust fan.
Preferably, a first sealing ring is respectively provided on the inner wall of each of the sockets.
Preferably, the invention also comprises shunt assembly, the shunt assembly comprises shunt cylinder, air pipe, liquid pipe, partition screen and absorbent cotton block, the top wall of the cylinder body of the shunt cylinder extends downward to form partition plate, and the partition screen is installed between the wall of cylinder body of the shunt cylinder and the partition plate, and separates the inner cavity of the shunt cylinder to form air chamber and a liquid chamber, the partition screen can block glue and only allow gas to pass through, and one end of the air pipe is located in the air chamber and the other end extends into the inner cavity of the shell, one end of the liquid pipe is located in the liquid chamber, while the other end extends into the inner cavity of the shell and is connected with the rubber-absorbent cotton block, which is installed in the inner mold core of the extruder, and one end of the air pipe is communicated with the air chamber.
Preferably, a second sealing rings are respectively arranged on the inner walls of the through holes into which the air pipe and the liquid pipe of the shunt cylinder extend.
Preferably, the partition screen is detachably installed between the cylinder wall gp 901469 the shunt cylinder and the partition plate, and the cylinder wall of the shunt cylinder is provided with an opening, and the opening is provided with door sealer.
Preferably, the absorbent cotton block comprises support plate and cotton block body, wherein the cotton block body is fixed on one side of the support plate, and one end of the liquid pipe penetrates through the support plate from the other side and extends into the cotton block body, the support plate and the cotton block body are provided with a plurality of wire channels which penetrate each other and can be used for the core wires to pass through.
Preferably, the support plate is also provided with heating resistor, and the control case is electrically connected with the absorbent cotton block.
Preferably, the side edge of the support plate where the cotton block body is installed is provided with wing, and both the support plate and the wing are made of heat-conducting materials.
The invention has the advantages described as follows: The present invention closes the wire inlet of the extruder by arranging casing with a plurality of insertion holes for the core wire to extend into the inner cavity of the casing and then enter the wire inlet, combined with the air duct to connect the exhaust fan, it can form a vacuum environment, effectively remove the air between the core wire and the sheath, and greatly improve the tightness of the connection between the core wire and the sheath, which is very suitable for the processing and use of submarine cables. According to the invention, by setting the shunt cylinder, air pipe, liquid pipe, screen and rubber absorbent cotton block to form the shunt cylinder and connecting the casing and air pipe, not only does it not affect the vacuumizing of the housing, but can suck away the glue which is mistakenly entered into the inner mold core due to the negative pressure moreover, it wipes the surface of the core wire, further improving the cable quality, by setting the support plate and the cotton block body to form the glue-absorbing cotton block, setting the heating resistor in the support plate, and setting the side wings to wrap
. ; LU501469 the glue-absorbing cotton block at the edge of the support plate, the glue solution can be effectively prevented from solidifying and forming glue particles. The features and advantages of the present invention will be described in detail by means of Embodiments and Figures.
Brief Description Of The Figures Fig. 1 is the structural representation of utilizing extruder to prepare sheath in the prior art; Fig. 2 is a front view of a submarine cable sheath vacuum pumping device of the present invention installed on an extruder; Fig. 3 is the assembly schematic diagram of the casing and the shunt assembly of a submarine cable sheath vacuum pumping device of the present invention; Fig. 4 is a schematic structural diagram of a casing and a shunt assembly of a submarine cable sheath vacuum pumping device installed on an extruder according to the present invention.
Wherein, 1- casing, 2- air duct, 3- exhaust fan, 4- control case, 5- shunt assembly, 51- shunt cylinder, 51-clapboard, 512- air chamber, 513- liquid chamber, 514- door sealer, 52- air pipe, 53- liquid pipe, 54- partition screen, 55- absorbent cotton block, 51-support plate, 5511- wing, 552- cotton block body, 6- extruder, 61- material sleeve, 62- shell, 63- screw, 64- guide sleeve, 65- inner mold core, 66- outer mold core, 67- mold cover, 7- core wire, 8- sheath.
Description of the present invention Referring to FIG. 2, 3 and 4, vacuum pumping device for submarine cable sheath of the present invention comprises casing 1, air duct 2, exhaust fan 3 and control case 4,
the casing 1 that closes the wire inlet of the extruder 6 and is provided with a plurality gp 901469 sockets for the core wire 7 to extend into the inner cavity of the casing and then enter the wire inlet, one end of the air duct 2 is communicated with the inner cavity of the casing 1 and the other end is installed at the air outlet of the exhaust fan 3, the control case 4 is electrically connected to the exhaust fan 3.
The inner wall of each socket is respectively provided with a first sealing ring.
The invention also comprises shunt assembly 5, the shunt assembly 5 comprises shunt cylinder 51, air pipe 52, liquid pipe 53, partition screen 54 and absorbent cotton block 55, the top wall of the cylinder body of the shunt cylinder 51 extends downward to form partition plate 511, and the partition screen 54 is installed between the wall of cylinder body of the shunt cylinder 51 and the partition plate 511, and separates the inner cavity of the shunt cylinder 51 to form air chamber 512 and a liquid chamber 513, the partition screen 54 can block glue and only allow gas to pass through, and one end of the air pipe 52 is located in the air chamber 512 and the other end extends into the inner cavity of the shell, one end of the liquid pipe 53 is located in the liquid chamber 513, while the other end extends into the inner cavity of the shell and is connected with the rubber-absorbent cotton block 55, which is installed in the inner mold core 66 of the extruder 6, and one end of the air pipe 2 is communicated with the air chamber 512.
A second sealing rings are respectively arranged on the inner walls of the through holes into which the air pipe 52 and the liquid pipe 53 of the shunt cylinder 51 extend.
The partition screen 54 is detachably installed between the cylinder wall of the shunt cylinder 51 and the partition plate 511, and the cylinder wall of the shunt cylinder 51 is provided with an opening, and the opening is provided with door sealer 514.
The absorbent cotton block 55 comprises support plate 551 and cotton block body 552, wherein the cotton block body 552 is fixed on one side of the support plate 551, and one end of the liquid pipe 53 penetrates through the support plate 551 from the other side and extends into the cotton block body 552, the support plate 551 and the cotton block body 552 are provided with a plurality of wire channels which penetrate each other and can be used for the core wires 7 to pass through.
The support plate 551 is also provided with heating resistor, and the control case 2901469 is electrically connected with the absorbent cotton block 55.
The side edge of the support plate 551 where the cotton block body 552 is installed is provided with wing 5511, and both the support plate 551 and the wing 5511 are made of heat-conducting materials.
The working principle of this invention is described as follows: In working, the exhaust fan 3 is started, and the air in the inner cavity of the casing 1 is first drawn into the air cavity of the shunt cylinder 51 along the air pipe 52, and then drawn out along the air pipe 2, thereby reducing the air between the core wire 7 and the sheath 8.
In addition, due to the suction effect of the suction fan 3, a vacuum environment is formed in the inner cavity of the casing 1, which will lead to part of glue flowing into the inner mold core 65, and after solidification, glue particles will be formed and then gradually attached to the surface of the core wire 7 that will enter the extruder 6, which will affect the tight connection between the core wire 7 and the sheath 8. Therefore, in this application, the rubber-absorbent cotton block 55 is arranged in the inner mold core
65. On the one hand, the rubber-absorbent cotton block 55 is used to absorb the rubber liquid accidentally entering under the influence of air pressure, and on the other hand, the rubber-absorbent cotton block 55 can be used to wipe the moving core wire 7. Moreover, the glue stored in the cotton block body 552 will gradually flow into the liquid cavity of the shunt cylinder 51 along the liquid pipe 53 under the negative pressure. At the same time, the heating action of the heating resistor can also prevent the glue from solidifying into colloidal particles.
The present invention closes the wire inlet of the extruder by arranging casing with a plurality of insertion holes for the core wire to extend into the inner cavity of the casing and then enter the wire inlet, combined with the air duct to connect the exhaust fan, it can form a vacuum environment, effectively remove the air between the core wire and the sheath, and greatly improve the tightness of the connection between the core wire and the sheath, which is very suitable for the processing and use of submarine cables. According to the invention, by setting the shunt cylinder, air pipe, liquid pipe, screen and rubber 991469 absorbent cotton block to form the shunt cylinder and connecting the casing and air pipe,
not only does it not affect the vacuumizing of the housing, but can suck away the glue which is mistakenly entered into the inner mold core due to the negative pressure moreover, it wipes the surface of the core wire, further improving the cable quality, by setting the support plate and the cotton block body to form the glue-absorbing cotton block, setting the heating resistor in the support plate, and setting the side wings to wrap the glue-absorbing cotton block at the edge of the support plate, the glue solution can be effectively prevented from solidifying and forming glue particles.

Claims (8)

Claims LU501469
1. Vacuum pumping device for submarine cable sheath is characterized in comprising casing (1), air duct (2), exhaust fan (3) and control case (4), the casing (1) that closes the wire inlet of the extruder (6) and is provided with a plurality of sockets for the core wire (7) to extend into the inner cavity of the casing and then enter the wire inlet, one end of the air duct (2) is communicated with the inner cavity of the casing (1) and the other end is installed at the air outlet of the exhaust fan (3), the control case (4) is electrically connected to the exhaust fan (3).
2. Vacuum pumping device for submarine cable sheath, according to claim 1, is characterized in that a first sealing ring is respectively provided on the inner wall of each of the sockets.
3. Vacuum pumping device for submarine cable sheath, according to claim 1, is characterized in comprising also shunt assembly (5), the shunt assembly (5) comprises shunt cylinder (51), air pipe (52), liquid pipe (53), partition screen (54) and absorbent cotton block (55), the top wall of the cylinder body of the shunt cylinder (51) extends downward to form partition plate (511), and the partition screen (54) is installed between the wall of cylinder body of the shunt cylinder (51) and the partition plate (511), and separates the inner cavity of the shunt cylinder (51) to form air chamber (512) and a liquid chamber (513), the partition screen (54) can block glue and only allow gas to pass through, and one end of the air pipe (52) is located in the air chamber (512) and the other end extends into the inner cavity of the shell, one end of the liquid pipe (53) is located in the liquid chamber (513), while the other end extends into the inner cavity of the shell and is connected with the rubber-absorbent cotton block (55), which is installed in the inner mold core (66) of the extruder (6), and one end of the air pipe (2) is communicated with the air chamber (512).
4. Vacuum pumping device for submarine cable sheath, according to claim 3, is characterized in that a second sealing rings are respectively arranged on the inner walls of the through holes into which the air pipe (52) and the liquid pipe (53) of the shunt cylinder (51) extend.
5. Vacuum pumping device for submarine cable sheath, according to claim 3, 18901469 characterized in that the partition screen (54) is detachably installed between the cylinder wall of the shunt cylinder (51) and the partition plate (511), and the cylinder wall of the shunt cylinder (51) is provided with an opening, and the opening is provided with door sealer (514).
6. Vacuum pumping device for submarine cable sheath, according to claim 3, is characterized in that the absorbent cotton block (55) comprises support plate (551) and cotton block body (552), wherein the cotton block body (552) is fixed on one side of the support plate (551), and one end of the liquid pipe (53) penetrates through the support plate (551) from the other side and extends into the cotton block body (552), the support plate (551) and the cotton block body (552) are provided with a plurality of wire channels which penetrate each other and can be used for the core wires (7) to pass through.
7. Vacuum pumping device for submarine cable sheath, according to claim 6, is characterized in that the support plate (551) is also provided with heating resistor, and the control case (4) is electrically connected with the absorbent cotton block (55).
8. Vacuum pumping device for submarine cable sheath, according to claim 7, is characterized in that the side edge of the support plate (551) where the cotton block body (552) is installed is provided with wing (5511), and both the support plate (551) and the wing (5511) are made of heat-conducting materials.
LU501469A 2022-02-15 2022-02-15 Vacuum pumping device for submarine cable sheath LU501469B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
LU501469A LU501469B1 (en) 2022-02-15 2022-02-15 Vacuum pumping device for submarine cable sheath

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU501469A LU501469B1 (en) 2022-02-15 2022-02-15 Vacuum pumping device for submarine cable sheath

Publications (1)

Publication Number Publication Date
LU501469B1 true LU501469B1 (en) 2022-08-16

Family

ID=82848802

Family Applications (1)

Application Number Title Priority Date Filing Date
LU501469A LU501469B1 (en) 2022-02-15 2022-02-15 Vacuum pumping device for submarine cable sheath

Country Status (1)

Country Link
LU (1) LU501469B1 (en)

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FG Patent granted

Effective date: 20220816